The climate in San Rafael during August can be summarized as warm, humid and very wet.
August is in the summer in San Rafael and is typically the warmest month of the year. Daytime maximum temperatures average around a muggy 26°C (79°F), whilst at night 16°C (60°F) is normal.
Daytime temperature | 26.4°C 79.4°F |
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Nightly temperature | 15.5°C 59.8°F |
Average temperature | 20.9°C 69.6°F |
Daily sunshine | 6.9 hrs |
Avg rainfall | 254 mm 10 ins |
Rainy days | 20 days |
Sea temperature | 28.1°C 82.6°F |
Humidity | 78% |
Windspeed | 13.3kph 8 mph |
On average August is the 5th wettest month of the year in San Rafael with around 254mm 10 inches of rain making it a very wet time to visit. This rainfall is typically spread over 20 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.9 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in San Rafael in August 2025.
Best places to visit in August
Hottest month: | March | 25.9°C 78.6°F |
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Driest month: | January | 77mm 3ins |
Sunniest month: | July | 7.2hrs |
Coldest month: | December | 24.8°C 76.6°F |
Wettest month: | May | 336mm 13.2ins |