San Juan Weather in May

What's the weather like in San Juan (San Juan) in May 2023?

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

May is in the spring in San Juan and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a steamy 30°C (85°F), whilst at night 22°C (72°F) is normal.

San Juan weather averages (imperial / metric)
Daytime temperature 29.5°C 85°F
Nightly temperature 22.4°C 72.2°F
Average temperature 25.9°C 78.6°F
Daily sunshine 8.7 hrs
Avg rainfall 182 mm 7.1 ins
Rainy days 16 days
Sea temperature 27.5°C 81.4°F
Humidity 76%
Windspeed 15.1kph 9 mph

On average May is the 3rd wettest month of the year in San Juan with around 182mm 7.1 inches of rain making it a wet time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.7 hours of sunshine per day.

May temperatures in San Juan

San Juan average temperature in May

May rainfall

San Juan average rain in May

May hourly sunshine

San Juan average rain in May

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 May 2022.

Other monthly averages

Best places to visit in May

UV index Best time to go?

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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