Yosemite covers around 3,000 square kilometres of the central Sierra Nevada in California, and its history is the history of the idea of a national park. In 1864, in the middle of the Civil War, Abraham Lincoln signed the Yosemite Grant, which set the valley and the Mariposa sequoia grove aside for preservation and was the first time a national government anywhere protected land for that reason. It became a national park in 1890, largely through the campaigning of John Muir, and a UNESCO World Heritage Site in 1984. The Ahwahneechee people lived in the valley long before any of that, and Ahwahnee is their name for it.
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The park is enormous and almost everybody goes to the same small part of it. Yosemite Valley is roughly seven miles long and one mile wide, around one per cent of the park's area, and it holds the sights: El Capitan, Half Dome, Yosemite Falls, Bridalveil Fall and the Merced River. The valley floor sits at about 1,200 metres. Above and around it, the high country runs to over 3,000 metres, and Tuolumne Meadows at around 2,600 metres is a completely different park, subalpine and open and quiet.
Two facts govern what you pack and both are about altitude and season. The valley is high enough that nights are cold in every month, dropping into single figures in July while days reach the low thirties, so a 25 degree daily swing is normal. And the waterfalls are snowmelt fed rather than spring fed: they peak in May and June and Yosemite Falls, at 739 metres the tallest in North America, is frequently reduced to nothing from August into October. Arriving in September expecting a waterfall is the most common disappointment in this park.
This guide covers the valley, the high country, the seasons, the bears, safety and the full packing list.
The Valley, the Walls and the Waterfalls
The valley is where the granite is, and the granite is why climbers from all over the world come here.
El Capitan is a single piece of granite rising about 900 metres from the valley floor and it is the centre of big wall climbing worldwide. From the meadow below you can usually spot climbers on it as specks, and the ranger telescopes make them visible. The Dawn Wall was first free climbed in 2015 by Tommy Caldwell and Kevin Jorgeson over nineteen days, and in 2017 Alex Honnold climbed the Freerider route without a rope, which remains the most extraordinary thing anyone has done here.
Half Dome, at 2,693 metres, is the other emblem: a dome sheared off down one face by glacial action. The summit is reached by a route that finishes with a steel cable staircase up bare granite, which requires a permit issued by lottery, and the full day from the valley is around 23 kilometres with 1,460 metres of ascent. It is not a technical climb and it is a very serious day out.
The Mist Trail is the best short walk in the park and the wettest. It climbs stone steps beside Vernal Fall, directly through the spray, and continues to Nevada Fall above it. In May and June you will be soaked to the skin, which is the point, and the granite steps are slick and the drops beside them unfenced. People have died at the top of Vernal Fall going into the water above the lip, and the railing there exists for a reason.
Tunnel View is the classic first sight of the valley, taking in El Capitan, Bridalveil Fall and Half Dome in one frame. Glacier Point, at around 2,200 metres, looks straight down into the valley and across at Half Dome, and its road is closed by snow through the winter. And Horsetail Fall, on the east face of El Capitan, catches the setting sun for a couple of weeks in mid to late February and glows orange, a natural event now so popular that the park manages access to it.
The Mariposa Grove in the south of the park holds several hundred mature giant sequoias, including the Grizzly Giant, which is thought to be around 3,000 years old. Hetch Hetchy, in the north-west, was a valley comparable to Yosemite Valley until it was dammed in 1923 to supply San Francisco with water, over Muir's furious objection, and it is worth visiting precisely because of what it is.
Recommended Tours and Experiences
The High Country, and the Road That Is Shut Half the Year
Tioga Road is the key to the other ninety-nine per cent of the park and it is closed by snow for roughly half the year.
The road crosses Tioga Pass at 3,031 metres, the highest highway pass in California, and typically closes with the first serious snow in November and reopens somewhere between late May and early July depending on the winter. There is no fixed date and no way to hurry it. When it is open it gives access to Tuolumne Meadows, a broad subalpine meadow at around 2,600 metres with the Tuolumne River running through it, granite domes to scramble, Tenaya Lake, and the trailheads for Cathedral Peak and the high Sierra. It is cooler, emptier and, for many people who know the park well, better than the valley.
The John Muir Trail and the Pacific Crest Trail both run through this country, and the High Sierra Camps, a chain of tented camps a day's walk apart, operate in summer by lottery.
Getting to the park matters more than usual because of the driving distances. It is roughly four hours from San Francisco, two and a half from Fresno Yosemite airport, and the valley is a long way inside the park boundary from every entrance. YARTS buses run from Merced, Fresno and Mammoth Lakes and connect with Amtrak at Merced, which makes a car-free visit entirely possible, and once you are in the valley a free shuttle bus runs a loop and parking is the single most frustrating part of a Yosemite day.
One planning step is worth doing before anything else. Yosemite has operated timed entry reservations in some years and not others, with different dates, hours and exemptions each time, and the Half Dome cables permit runs on its own lottery schedule. Check the National Park Service site for the current year's requirements before you book flights or accommodation, because this is the step that catches people out and no guide written in advance can be relied on for it.
When to Go
May and June for waterfalls, September for the high country, October for quiet. August has no waterfalls and the most people.
Late spring, May and June, is when the park is at its most spectacular. Snowmelt has the waterfalls at full volume, the Mist Trail is a genuine soaking, the dogwoods flower in the valley, and the meadows are green. Tioga Road is often still closed in May and usually opens during June, so the high country may not be available. The valley is busy and getting busier through June.
Summer, July and August, brings warm valley days of 30 to 33C, cold nights, all roads open, and the largest crowds of the year. It is also when the waterfalls fade, and Yosemite Falls is commonly dry by late July or August. The high country is at its best now, which is the right answer to a August visit: go up to Tuolumne rather than queueing in the valley. Wildfire smoke is a real possibility from July onwards and can close trails or spoil visibility for days.
Autumn is excellent. September holds warm days and cold nights with the crowds thinning after the American Labor Day holiday, and the high country is superb until the first snow. October is quiet and beautiful, with black oaks turning in the valley, though the falls are still low and Tioga can close at any point from late October.
Winter, November to March, is a different park and an underrated one. The valley gets snow, stays open, and is genuinely quiet; Badger Pass offers modest skiing; the sequoias in the Mariposa Grove under snow are extraordinary; and Horsetail Fall glows in February. Tioga Road and Glacier Point Road are closed, tyre chains are required on the valley roads at times and are enforced, and daylight is short. It is the best time to come if you want the place to yourself and are prepared for the cold.
Is Yosemite Safe for Women Travelers
Yosemite is a very safe place to be alone, and what hurts people here is water, height, cold, heat and traffic rather than crime.
The FCDO publishes no advised-against areas anywhere in the United States and no country-level warning. Its guidance concentrates on the practical differences a British visitor meets: entry requirements and ESTA, the cost of healthcare without insurance, extreme weather including hurricanes on the Atlantic and Gulf coasts between June and November, and wildfire and heat risk in the west and south-west.
Crime is not the concern. The valley is busy with families and international visitors, the campgrounds and lodges are well supervised, and women hike and camp here solo constantly. Theft from parked cars at trailheads is the realistic property crime, so leave nothing visible, and note that in this park a food item left visible in a car is also a bear problem rather than only a theft one.
Water is the leading cause of death in this park and it is worth being blunt about. The Merced River is snowmelt: it is far colder and far stronger than it looks, cold water shock takes effect in seconds, and people are swept over waterfalls every few years after entering the water above a lip where the current is deceptively gentle. Do not swim above any waterfall, obey the railings at Vernal and Nevada Falls, and treat the river in May and June as genuinely dangerous rather than refreshing. The Mist Trail's granite steps are slippery when wet, which is most of the time in spring.
Height is the second one. Half Dome's cable section is bare granite at a steep angle with a drop either side, it becomes lethal in a thunderstorm, and people have died there both from falls and from lightning. Do not start up the cables if storms are forecast, and turn back if one builds. The same applies to any exposed dome or summit in the afternoon in summer.
Bears are a management problem rather than a danger. These are American black bears, several hundred of them, and there are no grizzlies in California. They are not generally aggressive but they are extremely good at getting into food, and a bear that learns to raid cars and campsites usually ends up dead, which is why the park's food storage rules are strictly enforced and carry fines. Use the metal food lockers at campsites and trailheads for anything scented, including toiletries and rubbish, never leave food in a vehicle overnight, and carry a bear canister in the backcountry. If you meet one, make noise, look large and back away; do not run and do not get between a mother and cubs.
Altitude and cold deserve attention. The valley at 1,200 metres is fine, but Tuolumne at 2,600 and the passes above 3,000 will leave you short of breath, dehydrated and sunburnt faster than you expect, and afternoon thunderstorms build over the high country in summer. Night temperatures in the valley drop into single figures even in July, and people who packed for California in general are cold in Yosemite in particular.
Two more. Wildfire is a seasonal reality from summer into autumn, and smoke can make the air genuinely unhealthy and close trails, so check conditions before travelling and be willing to change plans. And the specifically American risk is financial: there is no public health system, an ambulance is billed separately, a helicopter evacuation off a trail runs well into five figures, and the nearest hospital outside the park is an hour or more away. Insurance with a high medical limit and search and rescue cover is essential.
This is the single biggest practical difference for a visitor: there is no public health system, an emergency room visit without insurance can run into thousands of dollars, and an ambulance is billed separately and is not free. Comprehensive travel insurance with a high medical limit is not optional in the United States, and you should carry your policy number and the insurer's 24 hour number somewhere you can reach them. Urgent care clinics handle anything short of an emergency far more cheaply and quickly than an emergency room, and are the right choice for a sprain, an infection or stitches.
The Yosemite Packing List
Base layers, for a 25 degree daily swing
This is a textbook case for wool. The valley goes from a 32C afternoon to a 9C night in July, the high country is colder again, and you will sweat heavily climbing out of the valley and then stand still in wind at the top. Merino insulates when it is wet with sweat or waterfall spray, does not chill you the moment you stop, and stays wearable for several days of camping without becoming unpleasant, which matters when you are carrying everything. Our merino base layers are 100% Australian merino at 17.5 micron and 160gsm with no synthetic blend. A merino wool base layer for women belongs in the pack in every month here, and merino leggings are worth adding from October to May and for any night in Tuolumne.
Boots, and the Mist Trail is the test
Waterproof hiking boots with ankle support and a deep lugged sole. Yosemite's trails are granite slabs, stone steps, sand and tree roots, and the Mist Trail in spring is running water over polished rock, which is where grip stops being a preference. Wear them in first, and pack merino wool socks plus a dry spare pair, because on the Mist Trail your feet will be soaked within twenty minutes.
A rain shell, for spray as much as rain
A packable rain jacket for women, which on this trip does two jobs: afternoon thunderstorms in the high country, and the Mist Trail, where the spray is heavy enough to soak you through in May and June. Summer rain here is short and hard rather than steady.
Insulation, more than California suggests
A fleece mid layer year round, and from September to May an insulated hooded jacket as well. Evenings in the valley are cold in every month, Glacier Point and Tuolumne are colder, and if you are camping you will want the jacket in your sleeping bag in shoulder season. A hat and gloves from October to April.
A head torch, which is not optional here
A rechargeable head torch. Half Dome and the long valley-rim hikes are started before dawn as a matter of routine, the descent regularly runs into dusk, and campgrounds have no lighting. This is the item people most often wish they had brought.
Sun protection at altitude
High SPF sunscreen, proper sunglasses and a brimmed hat. Granite and snow both reflect, the air is thin, and sunburn at Tuolumne on a cool day is routine. A long sleeved layer does more than sunscreen on a full day out.
Water and food storage
A large refillable bottle, and for anything beyond a maintained trail a way to treat water, because filling stations exist in the valley and not much beyond it. A light personal filter or purification tablets turn any stream into a refill and weigh almost nothing. And remember that every scented item, food, toothpaste, sunscreen, rubbish, has to go into a bear locker or a canister rather than a tent or a car, which is a rule rather than a suggestion.
The small things
Offline mapping and a paper map, because signal is absent across most of the park. Electrolytes for hot days. Tyre chains or a plan for them if you are driving between November and March, because the requirement is enforced. And check the current entry reservation and Half Dome permit rules on the park's own site before you book anything else.
Essential Resources for Women in Yosemite
Emergency numbers: 911 for police, ambulance and fire, free from any phone including a locked mobile. Calls are answered locally and dispatchers will stay on the line. For non-urgent police matters many cities also run a 311 information line.
Search and rescue: call 911, and inside the park you will reach the National Park Service dispatch. Yosemite Search and Rescue is one of the busiest teams in the country and would far rather be called early. Mobile signal is patchy to absent over most of the park, so tell someone your route and expected return, and note that a helicopter evacuation is billed, which is why search and rescue cover on your insurance matters.
Non-emergency: the park has its own rangers and a small jail, and rangers are law enforcement as well as interpretation. Report a theft to them for the report your insurer will need.
Main hospital or clinic: the Yosemite Medical Clinic in Yosemite Valley provides urgent care and is open daily in season with limited hours out of season. It is not a hospital. The nearest hospitals are in Mariposa, Sonora and Oakhurst, roughly an hour or more away depending on the entrance, and the regional trauma centres are in Modesto and Fresno. That distance is the single most important practical safety fact in this park.
Official health authority: the California Department of Public Health, with the Centers for Disease Control and Prevention at federal level. The CDC site blocks some automated requests while being fully available in a browser.
Park conditions, roads and permits: the National Park Service site for Yosemite is the authoritative source for current entry reservation requirements, the Half Dome cables lottery, Tioga Road and Glacier Point Road status, chain controls, trail closures, wildfire and air quality. recreation.gov handles campground bookings and wilderness permits, and both sell out months ahead for peak dates.
Bears and food storage: the park publishes the food storage requirements and they are enforced with fines. Use the metal lockers, never leave anything scented in a vehicle overnight, and carry a canister in the backcountry.
US State Department travel advisory: there is none, and this is not an omission. The State Department issues travel advisories for other countries, not for the United States itself, so no US advisory for this destination exists to link. In its place, the Government of Canada advice for the United States gives an equivalent third-country assessment.
UK FCDO travel advice: gov.uk/foreign-travel-advice/usa, and read the safety and security page rather than only the landing page, because that is where the substance sits.
Official tourism authority: Visit The USA at national level and Visit California for the state, with the National Park Service as the operational authority for everything inside the boundary.
Solo women safety assessment: Yosemite is a comfortable and very common place to travel alone. The valley is busy with families and international visitors, the shuttle means you do not need a car once you arrive, YARTS buses and Amtrak get you here without one at all, and solo hikers and campers are entirely unremarkable. Crime is not the concern; theft from a car at a trailhead is the realistic risk, and in this park anything scented left visible is a bear problem as well. What actually kills people here is water. The Merced is snowmelt, far colder and stronger than it looks, and visitors are swept over waterfalls every few years after going into the river above a lip where the current seemed gentle: do not swim above a waterfall, respect the railings at Vernal and Nevada Falls, and treat the Mist Trail's wet granite steps as the slip hazard they are. Height is next: the Half Dome cables are bare steep granite above a drop and become lethal in a thunderstorm, so do not start if storms are forecast and turn back if one builds. Nights in the valley drop into single figures even in July and the high country is colder, so pack more warmth than California implies. Bears are a food problem rather than a danger, and the storage rules protect the bears as much as you. Wildfire smoke is a genuine seasonal possibility that can close trails and make the air unhealthy. And because the nearest hospital is an hour or more outside the park, the in-park clinic is urgent care rather than a hospital, and a helicopter off a trail runs into five figures, insurance with a high medical limit and search and rescue cover is essential rather than advisable. Tell someone your route: signal is absent across most of this park.
Reading On
For the country-level picture, start with the USA travel guide for women. For why wool is the right answer to waterfall spray and a cold night at altitude, read the guide to merino wool base layers for women. Every destination we cover is indexed at the travel packing guide for women, and the base layers are at the Roman Trail collection.
If the outer journey is calling you, the inner one usually is too. Explore SoulMap at romantrail.com/blogs/soulmap.
