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 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's advent denotes a minor fluctuation in the average high-temperature to a still agreeable 69.1°F (20.6°C) from July's 68.9°F (20.5°C). During August, the average low-temperature in South San Francisco is a refreshing 56.5°F (13.6°C).Humidity
With an average relative humidity of 78%, August is the most humid month in South San Francisco, California.Rainfall
June through August are months with the least rain when the rain falls for 1.5 days and typically aggregates up to 0.04" (1mm) of rain.Daylight
In South San Francisco, the average length of the day in August is 13h and 34min.On the first day of the month, sunrise is at 6:14 am and sunset at 8:17 pm. On the last day of August, sunrise is at 6:39 am and sunset at 7:39 pm PDT.
Sunshine
In South San Francisco, the average sunshine in August is 11.5h.UV index
The months with the highest UV index in South San Francisco, California, are June through September, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 5 in August translates into the following instructions:
Ensure safety - Sun damage prevention is strongly urged. To protect against the Sun's most potent rays, avoid direct exposure around midday. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
What is the temperature in August in South San Francisco?
What is the most humid month in South San Francisco?
What is the average humidity in August in South San Francisco?
What is the driest month in South San Francisco?
How many days does it rain in August in South San Francisco?
How many hours of daylight does South San Francisco have in August?
When are sunrise and sunset in August in South San Francisco?
How long on average sun shines in August in South San Francisco?
What are the months with the highest UV index in South San Francisco?
What is the UV index reading in August in South San Francisco?
Average temperature in August
South San Francisco, CA
- Average high temperature in August: 69.1°F
The warmest month (with the highest average high temperature) is September (70°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in August: 56.5°F
The months with the highest average low temperature are August and September (56.5°F).
The coldest months (with the lowest average low temperature) are January, February and December (47.8°F).
Average pressure in August
South San Francisco, CA
- Average pressure in August: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in August
South San Francisco, CA
- Average wind speed in August: 6.3mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).
Average humidity in August
South San Francisco, CA
- Average humidity in August: 78%
The month with the highest relative humidity is August (78%).
The months with the lowest relative humidity are October and November (71%).
Average rainfall in August
South San Francisco, CA
- Average rainfall in August: 0.04"
The wettest month (with the highest rainfall) is February (0.79").
The driest months (with the least rainfall) are June, July and August (0.04").
Average rainfall days in August
South San Francisco, CA
- Average rainfall days in August: 1.5 days
The month with the highest number of rainy days is March (9.4 days).
The month with the least rainy days is June (1.1 days).
Average daylight in August /
Average sunshine in August
South San Francisco, CA
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in August: 11h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in August
South San Francisco, CA
- Average sunshine days in August: 25 days
The months with the most sunshine days are June, July and September (26.3 days).
The month with the least sunshine days is March (19.4 days).
Average UV index in August
South San Francisco, CA
- Average UV index in August: 5
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February and December (UV index 3).
Average cloud cover in August
South San Francisco, CA
- Average cloud cover in August: 19
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is September (Cloud cover 16).
Average visibility in August
South San Francisco, 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).
South San Francisco, California, USA
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