Río San Juan Weather in May

What's the weather like in Río San Juan (María Trinidad Sánchez) in May 2025?

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

May is in the spring in Río San Juan and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (87°F), whilst at night 21°C (70°F) is normal.

Río San Juan weather averages (imperial / metric)
Daytime temperature 30.7°C 87.2°F
Nightly temperature 21°C 69.7°F
Average temperature 25.8°C 78.4°F
Daily sunshine 7.4 hrs
Avg rainfall 204 mm 8 ins
Rainy days 13 days
Sea temperature 27.2°C 81°F
Humidity 77%
Windspeed 10.1kph 6 mph

On average May is the 3rd wettest month of the year in Río San Juan with around 204mm 8 inches of rain making it a very wet time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.4 hours of sunshine per day.

May temperatures in Río San Juan

Río San Juan average temperature in May

May rainfall

Río San Juan average rain in May

May hourly sunshine

Río 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 Río San Juan in May 2025.

Other monthly averages

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Río San Juan weather stats

Río San Juan weather statistics
Hottest month: June 31.4°C 88.5°F
Driest month: February 103mm 4.1ins
Sunniest month: August 8.5hrs
Coldest month: January 27.7°C 81.9°F
Wettest month: November 268mm 10.6ins
Map showing location of Río San Juan (19.64385, -70.07635) Río San Juan map pin © Google

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