San Isidro Weather in May

May in San Isidro typically sees daytime highs of 24°C (75°F) and nighttime lows of 18°C (64°F). May falls within the rainy season, so heavy rainfall is to be expected.

Rainfall in San Isidro in May

San Isidro is in the rainy season in May, with rain on around 19 days and an average of 582 mm (23 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.

Temperature in San Isidro in May

Daytime temperatures in San Isidro reach 24°C (75°F) in May, dropping to 18°C (64°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. Nights drop to around 18°C (64°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in San Isidro in May

The city usually sees around 190 hours of sunlight, indicating many sunny days despite it being the rainy season.

May in San Isidro has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.