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Yosemite Park Weather in August

Averages By Month

Sharing the top ranking with July, August is the hottest month in Yosemite National Park. Highs reach 90°F although it can be as cold as 55°F overnight so do pack a wide range of clothes! The sun shines for 11 hours on average each day and there is no rain to be expected with August being the driest month in Yosemite National Park. It’s the perfect time to enjoy the great outdoors! Note though that even in August the water in the lakes stays pretty cool with average water temperatures of just 56°F- not exactly suitable for swimming!

In August the whole park is open (some roads and trails close over winter) and the weather is ideal for getting away from urban areas and enjoying the nature. But since many people think the same, the hotels and campsites soon get fully booked so better be fast if you’re planning on visiting. If you are into extra excitement, we highly recommend a zipline experience or a half dome hike. Spaces for this sell out quickly too so it’s also best to book in advance.

High and Low Temperature in August °F

Water Temperature in August °F

Current Weather Yosemite Park

59°F clear sky
Local Time

Hourly 10 Days

Averages Yosemite Park

  J F M A M J J A S O N D

High °F

48° 43° 58° 64° 73° 82° 90° 90° 84° 72° 57° 47°

Low °F

28° 30° 33° 37° 43° 50° 56° 55° 50° 41° 32° 27°

Sun

6h 7h 9h 10h 11h 11h 12h 11h 10h 9h 7h 6h

Rain Days

8 7 9 6 3 1 1 0 2 3 5 7

Water °F

23° 23° 25° 32° 40° 50° 57° 56° 54° 40° 35° 24°

Yosemite Park Weather by Month

Best Time to Visit Yosemite Park

Yosemite National Park has something fantastic to offer throughout the year. A great time to visit might be between May and July when the rivers and lakes are filled to the top with meltwater and the waterfalls are most impressive. For walking and hiking the months between May and October are ideal as the vegetation will show its most stunning side.

In summer you might even want to go for a swim although the water in the rivers and lakes always stays relatively cold with highs hardly ever reaching 70°F. Spring and fall are particularly pleasant, never getting too hot or too busy. Winter in Yosemite National Park is great for anyone into winter sports - don’t forget the snow chains if driving!

Things to know about Yosemite Park

Yosemite National Park is one of the most popular national parks in the United States with around 4 million visitors each year. In July and August it can get very busy and weekends during that time especially get quite crowded with additional ‘local’ visitors from San Francisco and Los Angeles. But most of the visitors head to the area around Yosemite Valley as it’s easy to reach by car. You might find more peace during that time if you explore other areas of Yosemite.

A little bit about the park’s history: the US Senate protected the area of 1500 square miles back in 1890. In 1906 the National Park was extended to include Yosemite Valley and Mariposa Grove.

The Park has 4 entrances: 1 northwest, 1 west, 1 south and 1 from the east via the Tioga-Pass which is only open in summer. Whichever entrance you choose, you will have to pay different entrance fees depending on whether you are coming by car, motorcycle or by foot.

Besides some incredible nature, including North America’s tallest waterfalls, the park offers some remarkable flora and fauna. You will be able to see 37 different kinds of trees including mammut trees. Yosemite National Park is also the place to see never before seen herbs and wildflowers on the many beautiful fields. Some animals like grizzly bears and wolves have sadly been made extinct from the area but you can still see black bears, pumas, ground squirrels and many more…

Yosemite Park Giant Sequoias
Yosemite Park bathing in river

Do stay alert given that there are some bears and pumas around! Bears aren’t actually that dangerous for humans. But when they are looking for food they can destroy whole tents and damage cars badly. That’s why in the national park you can only store food in special boxes. This is particularly important when camping! Encounters with pumas, aka mountain lions, on the other hand will be rare but you must follow certain rules to be safe. You should stop and slowly retreat or, in case of necessity, scream and shout but never run!
Yosemite Park Waterfall
Yosemite Park Deer


Here is a summary of the must sees of Yosemite National Park:

Yosemite Park Glacierpoint Halfdome
Yosemite Park View from Top

Yosemite Park Location

Other destinations by month

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