Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
August, on average, is the warmest month, registering a high temperature of 91.9°F (33.3°C) and a low of 65.8°F (18.8°C).Humidity
With an average relative humidity of 38%, August is the least humid month.Rainfall
In San Bernardino, during August, the rain falls for 1.7 days and regularly aggregates up to 0.08" (2mm) of precipitation. In San Bernardino, during the entire year, the rain falls for 46.6 days and collects up to 6.18" (157mm) of precipitation.Snowfall
January, March through December are months without snowfall.Daylight
In August, the average length of the day is 13h and 23min.On the first day of August in San Bernardino, California, sunrise is at 6:01 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 7:15 pm PDT.
Sunshine
In August, the average sunshine is 12.1h.UV index
June through August, with an average maximum UV index of 7, are months with the highest UV index in San Bernardino. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In August, the average maximum UV index of 7 translates into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the hottest in San Bernardino?
How hot does it get in San Bernardino in August?
What is the least humid month in San Bernardino?
What is the average humidity in August in San Bernardino?
How much does it rain in San Bernardino in August?
When it does not snow in San Bernardino?
How many hours of daylight does San Bernardino have in August?
When are sunrise and sunset in August in San Bernardino?
How long on average sun shines in August in San Bernardino?
What are the months with the highest UV index in San Bernardino?
How high is the UV index in August in San Bernardino?
Average temperature in August
San Bernardino, CA
- Average high temperature in August: 91.9°F
The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is December (59.9°F).
- Average low temperature in August: 65.8°F
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).
Average pressure in August
San Bernardino, CA
- Average pressure in August: 29.87"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in August
San Bernardino, CA
- Average wind speed in August: 4.8mph
The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in August
San Bernardino, CA
- Average humidity in August: 38%
The month with the highest relative humidity is February (53%).
The month with the lowest relative humidity is August (38%).
Average rainfall in August
San Bernardino, CA
- Average rainfall in August: 0.08"
The wettest month (with the highest rainfall) is December (1.42").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in August
San Bernardino, CA
- Average rainfall days in August: 1.7 days
The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.2 days).
Average snowfall days in August
San Bernardino, CA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in August /
Average sunshine in August
San Bernardino, CA
- Average daylight in August: 13h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in August: 12h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in August
San Bernardino, CA
- Average sunshine days in August: 27.7 days
The months with the most sunshine days are June and October (27.9 days).
The month with the least sunshine days is February (21.7 days).
Average UV index in August
San Bernardino, CA
- Average UV index in August: 7
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in August
San Bernardino, CA
- Average cloud cover in August: 5
The months with the most cloud cover are February and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in August
San Bernardino, CA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
San Bernardino, California, USA
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