Mariposa (Yosemite) weather in August
Temperature, rain and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Fair
Best time to visit: April – May, October
What is the weather like in Mariposa (Yosemite) in August?
In August, Mariposa (Yosemite) is hot: daytime highs average 33 °C, and nights cool down to about 18 °C. With around 12 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 26 days the thermometer climbs to 30 °C or more. All in all, August is a so-so month for a holiday in Mariposa (Yosemite).
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 54 | 59 | 83 |
| Day | 34° | 33° | 29° |
| Night | 19° | 18° | 15° |
| Sun | 12 h | 12 h | 10 h |
| Rain days | 0 | 0 | 1 |
More details for August
- Daylight
- 13 h 39 min06:15 – 19:54
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 12 km/haverage daily peakAll months
- Cloud cover
- 10 %on averageAll months
- Hot days
- 26 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC−7America/Los_Angeles
How the score comes together
- Temperatureweight 50 %17 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in August
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
Mariposa (Yosemite) in August: quick answers
Is Mariposa (Yosemite) hot in August?
Yes. In August, Mariposa (Yosemite) is hot: daytime highs average 33 °C and nights stay around 18 °C. On about 26 days the thermometer climbs to 30 °C or more.
Does it rain much in Mariposa (Yosemite) in August?
It hardly ever rains.
Mariposa (Yosemite) month by month
The whole year in Mariposa (Yosemite)All destinations: USAWhere to go in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences