Weather · August
San Bernardino weather in August
Average highs of 96°F, lows of 63°F and 0.10 in of rain, from 30 years of weather records.
August is San Bernardino’s warmest month, with average highs of 96°F and lows of 63°F. That is 1° warmer than July, and 16° above the yearly average high.
- Average high
- 96°F
- Average low
- 63°F
- Precipitation
- 0.10 in
- Wet days
- 1
- Sunrise · sunset
- 6:10 AM · 7:37 PM
What to wear in August
- Hot days: light, breathable clothes, a sun hat, sunscreen and plenty of water for anything outdoors.
What August weather is good for
August compared with the months around it
Planning a trip? See the best time to visit San Bernardino and today’s forecast.
Questions
How hot does it get in San Bernardino in August?
Average highs are 96°F and average lows 63°F, for a daily mean of 80°F. Individual days run hotter or colder than these 30-year averages.
Does it rain in San Bernardino in August?
August averages 0.10 in of precipitation over about 1 days with at least 0.01 in. It is the 11th wettest month of the year.
What time is sunset in San Bernardino in August?
Around mid-August the sun rises about 6:10 AM and sets about 7:37 PM, for roughly 13.4 hours of daylight.
Is August a good time to visit San Bernardino?
The mildest months for visiting are April, May, October. August is hot.
NOAA U.S. Climate Normals 1991–2020, Redlands station (7.3 mi from downtown). Sunrise and sunset are calculated for August 15 at the city’s coordinates.