The climate in San Juan during May can be summarized as mild and reasonably dry.
May is in the fall / autumn in San Juan and is typically the 6th coldest month of the year. Daytime maximum temperatures average around 20°C (68°F), whilst at night 7°C (44°F) is normal.
|Daytime temperature||20°C 67.9°F|
|Nightly temperature||6.9°C 44.3°F|
|Average temperature||13.4°C 56.1°F|
|Daily sunshine||6.5 hrs|
|Avg rainfall||38 mm 1.5 ins|
|Rainy days||10 days|
|Sea temperature||20.3°C 68.5°F|
|Windspeed||13.3kph 8 mph|
On average May is the 5th driest month of the year in San Juan with around 38mm 1.5 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.5 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 May 2022.
|Hottest month:||November||20.2°C 68.4°F|
|Driest month:||July||11mm 0.4ins|
|Coldest month:||July||19.3°C 66.7°F|
|Wettest month:||March||126mm 5ins|