Weather in San Juan, Puerto Rico in May

So you're interested in going to San Juan, Puerto Rico in May

May is a hot and very rainy time for sunbathing in San Juan. May is an excellent month for swimming in San Juan with very warm sea temperatures. Consider visiting San Juan in the months of January, February, March, April, for the best beach weather. Also consider one of our other suggestions for May.

Temperature in San Juan in May

The average maximum temperature in San Juan in May is 31°. The average maximum temperature is 30° in the previous month and 32° in the next month.

The average temperature in San Juan in May is 28°. The average temperature ranges is 27° in the previous month and 29° in the next month.

The average minimum temperature in San Juan in May is 24°. The minimum temperature is 23° in the previous month and 25° in the next month.

Sunshine in San Juan in May

The average day light hours per day in San Juan in May are 13 and there are 7.9 hours of sunshine per day on average during May making it a quite sunny month with some cloud cover.

The ultraviolet index in San Juan in May is typically 13.4 during May. An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in San Juan in May

The average sea water temperature in San Juan in May is 27.4° which is very warm and ideal for relaxing and swimming for the whole day.

Rainfall in San Juan in May

The average total rainfall in San Juan in May is 222.8cm and on average there are 21.4 rainy days in May making it a very wet time to visit the beach.

Humidity in San Juan in May

The maximum dew point (an indicator of humidity) in San Juan in May is 24° which is very humid and quite uncomfortable for most unless you are on a beach. At night you would most likely require a fan. The dew point is 22° in the previous month and 24° in the next month.

The average maximum relative humidity in San Juan in May is typically 89.5%. The maximum relative humidity is 86.1% in the previous month and 87.3% in the next month.

The average relative humidity in San Juan in May is typically 76.8%. The average relative humidity is 72.6% in the previous month and 74.4% in the next month.

Wind Speed in San Juan in May

The average maximum wind speed in San Juan in May is typically 30kmh. The average maximum wind speed is 30kmh in the previous month and 31kmh in the next month.

The average wind speed in San Juan in May is typically 12kmh. The average wind speed is 13kmh in the previous month and 13kmh in the next month.

The average wind direction in San Juan in May is from the East.

Monthly Averages

Suggested Beaches in May

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