August weather forecastRichmond, CA
August
Weather in August
The last month of the summer, August, is another warm month in Richmond, California, with an average temperature fluctuating between 74.7°F (23.7°C) and 56.3°F (13.5°C).Temperature
The advent of August brings an average high-temperature of a still moderately hot 74.7°F (23.7°C), exhibiting minor difference from the previous month. Richmond experiences a mean temperature of 56.3°F (13.5°C) during August nights.Humidity
In August, the average relative humidity is 72%.Rainfall
June through September are months with the least rain when the rain falls for 2.4 days and typically aggregates up to 0.08" (2mm) of rain.Ocean temperature
In August, the average ocean temperature in Richmond is 56.7°F (13.7°C).Note: In 56.7°F (13.7°C), even brief exposure to 55.4°F (13°C) feels biting, and anything less than 50°F (10°C) risks cold shock and impaired breathing, considering one's health.
Daylight
The average length of the day in August is 13h and 35min.On the first day of August in Richmond, sunrise is at 6:13 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 7:39 pm PDT.
Sunshine
In August, the average sunshine is 11.5h.UV index
April through September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 5 in August translates into this advice:
Adopt protective measures - It is advised to guard against sun damage. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Richmond, CA
- Average high temperature in August: 74.7°F
The warmest month (with the highest average high temperature) is September (75.7°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in August: 56.3°F
The month with the highest average low temperature is September (56.5°F).
The coldest month (with the lowest average low temperature) is January (44.8°F).
Average pressure in August
Richmond, CA
- Average pressure in August: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in August
Richmond, CA
- Average wind speed in August: 6.3mph
The windiest month (with the highest average wind speed) is May (7.5mph).
The calmest month (with the lowest average wind speed) is November (5.1mph).
Average humidity in August
Richmond, CA
- Average humidity in August: 72%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (65%).
Average rainfall in August
Richmond, CA
- Average rainfall in August: 0.08"
The wettest month (with the highest rainfall) is February (1.38").
The driest months (with the least rainfall) are June, July, August and September (0.08").
Average rainfall days in August
Richmond, CA
- Average rainfall days in August: 2.4 days
The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is June (2 days).
Average sea temperature in August
Richmond, CA
- Average sea temperature in August: 56.7°F
The best month for swimming (with the highest average sea temperature) is September (57.3°F).
The coldest months (with the lowest average sea temperature) are April and June (53°F).
Average daylight in August /
Average sunshine in August
Richmond, CA
- Average daylight in August: 13h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in August: 11h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in August
Richmond, CA
- Average sunshine days in August: 23.2 days
The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is March (18.4 days).
Average UV index in August
Richmond, CA
- Average UV index in August: 5
The months with the highest UV index are April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in August
Richmond, CA
- Average cloud cover in August: 17
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 14).
Average visibility in August
Richmond, 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).
