San Juan Weather in August

What's the weather like in San Juan (San Juan) in August 2022?

The climate in San Juan during August can be summarized as hot, humid and wet.

August is in the summer in San Juan and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 30°C (87°F), whilst at night 24°C (75°F) is normal.

San Juan weather averages (imperial / metric)
Daytime temperature 30.4°C 86.6°F
Nightly temperature 23.7°C 74.6°F
Average temperature 27°C 80.6°F
Daily sunshine 9.2 hrs
Avg rainfall 195 mm 7.7 ins
Rainy days 20 days
Sea temperature 28.7°C 83.7°F
Humidity 77%
Windspeed 16.2kph 10 mph

On average August is the wettest month of the year in San Juan with around 195mm 7.7 inches of rain making it a 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 9.2 hours of sunshine per day.

August temperatures in San Juan

San Juan average temperature in August

August rainfall

San Juan average rain in August

August hourly sunshine

San Juan average rain in August

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 Juan in August 2022.

Other monthly averages

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San Juan weather stats

San Juan weather statistics
Hottest month: August 30.2°C 86.4°F
Driest month: March 79mm 3.1ins
Sunniest month: March 9.6hrs
Coldest month: February 26.9°C 80.4°F
Wettest month: August 195mm 7.7ins
Map showing location of San Juan (18.46633, -66.10572)

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