The climate in San Juan during July can be summarized as hot, humid and wet.
July is in the summer in San Juan and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a steamy 30°C (86°F), whilst at night 24°C (74°F) is normal.
Daytime temperature | 30.1°C 86.1°F |
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Nightly temperature | 23.6°C 74.4°F |
Average temperature | 26.8°C 80.2°F |
Daily sunshine | 9.5 hrs |
Avg rainfall | 180 mm 7.1 ins |
Rainy days | 19 days |
Sea temperature | 28.4°C 83°F |
Humidity | 76% |
Windspeed | 17.3kph 11 mph |
On average July is the 4th wettest month of the year in San Juan with around 180mm 7.1 inches of rain making it a wet time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.5 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 Juan in July 2025.
Hottest month: | August | 30.2°C 86.4°F |
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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 |