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
The arrival of August brings an average high-temperature of a still moderately hot 26.7°C (80.1°F), nearly identical to July's 26.3°C (79.3°F). An average low-temperature of 19.3°C (66.7°F) marks the month of August in San Francisco.Humidity
In San Francisco, the average relative humidity in August is 86%.Rainfall
In San Francisco, in August, it is raining for 27.6 days, with typically 287mm (11.3") of accumulated precipitation. In San Francisco, Costa Rica, during the entire year, the rain falls for 272 days and collects up to 2217mm (87.28") of precipitation.Daylight
In August, the average length of the day in San Francisco is 12h and 26min.On the first day of the month, sunrise is at 05:26 and sunset at 17:59. On the last day of August, sunrise is at 05:27 and sunset at 17:45 CST.
Sunshine
The average sunshine in August in San Francisco is 7.8h.UV index
The months with the lowest UV index in San Francisco, Costa Rica, are May, August and November, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In August, a daily UV index of 5 turns into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for San Francisco in August?
What is the average humidity in August in San Francisco?
How many days does it rain in August in San Francisco?
How many hours of daylight does San Francisco have in August?
When are sunrise and sunset in August in San Francisco?
How many hours of sunshine does San Francisco have in August?
When is the lowest UV index in San Francisco?
What is the UV index intensity in August in San Francisco?
Average temperature in August
San Francisco, Costa Rica
- Average high temperature in August: 26.7°C
The warmest months (with the highest average high temperature) are March and April (29.7°C).
The month with the lowest average high temperature is October (25.4°C).
- Average low temperature in August: 19.3°C
The month with the highest average low temperature is May (19.8°C).
The coldest month (with the lowest average low temperature) is January (16.8°C).
Average pressure in August
San Francisco, Costa Rica
- Average pressure in August: 1011.2mbar
The month with the highest atmospheric pressure is January (1012.1mbar).
The month with the lowest atmospheric pressure is October (1010.7mbar).
Average wind speed in August
San Francisco, Costa Rica
- Average wind speed in August: 4.6km/h
The windiest month (with the highest average wind speed) is February (10.6km/h).
The calmest month (with the lowest average wind speed) is September (3.8km/h).
Average humidity in August
San Francisco, Costa Rica
- Average humidity in August: 86%
The month with the highest relative humidity is October (89%).
The month with the lowest relative humidity is March (70%).
Average rainfall in August
San Francisco, Costa Rica
- Average rainfall in August: 287mm
The wettest month (with the highest rainfall) is October (396mm).
The driest month (with the least rainfall) is February (17mm).
Average rainfall days in August
San Francisco, Costa Rica
- Average rainfall days in August: 27.6 days
The month with the highest number of rainy days is October (30.2 days).
The month with the least rainy days is February (10.3 days).
Average daylight in August /
Average sunshine in August
San Francisco, Costa Rica
- Average daylight in August: 12h and 2min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in August: 7h and 5min
The month with the most sunshine is March (Average sunshine: 9h and 24min).
The month with the least sunshine is October (Average sunshine: 7h and 0min).
Average sunshine days in August
San Francisco, Costa Rica
- Average sunshine days in August: 2.8 days
The month with the most sunshine days is January (16.7 days).
The month with the least sunshine days is September (0.5 days).
Average UV index in August
San Francisco, Costa Rica
- Average UV index in August: 5
The months with the highest UV index are January, February, March, April, June, July, September, October and December (UV index 6).
The months with the lowest UV index are May, August and November (UV index 5).
Average cloud cover in August
San Francisco, Costa Rica
- Average cloud cover in August: 49
The month with the most cloud cover is October (Cloud cover 54).
The month with the least cloud cover is February (Cloud cover 19).
Average visibility in August
San Francisco, Costa Rica
- Average visibility in August: 7km
The months with the highest visibility are February and March (10km).
The months with the lowest visibility are August, September, October and November (7km).
San Francisco, Costa Rica
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