San Juan Weather in May

San Juan in May averages 30°C (86°F) during the day and 25°C (77°F) at night. Keep in mind that quite a bit of rainfall is expected this month.

Rainfall in San Juan in May

Historically, approximately 18 days this month are expected to have rain, averaging 63 mm (2.5 in). Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.

Temperature in San Juan in May

Expect highs of 30°C (86°F) in San Juan in May, with nights dropping to around 25°C (77°F). Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.

Sunshine in San Juan in May

The month enjoys around 233 hours of sunshine, creating mostly sunny days with good weather conditions.

Average water temperature in May

At 28°C (82°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.

Should you favor a climate that's both dry and comfortably warm, January, February and March typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.