San Isidro Weather in September

With daytime temperatures of 19°C (66°F) and nighttime lows of 11°C (52°F), September in San Isidro brings pleasant temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 84 mm (3.3 in) falls on average.

Rainfall in San Isidro in September

Based on our climate data of the past 30 years, about 7 days of rain are anticipated, with 84 mm (3.3 in) on average. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in San Isidro in September

Expect highs of 19°C (66°F) in San Isidro in September, with nights dropping to around 11°C (52°F). The difference between afternoon and evening temperatures is usually noticeable. Nights drop to around 11°C (52°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 September

The area enjoys a balanced 186 hours of sunlight, ensuring it's neither too overcast nor too sunny.

For San Isidro itself, January, November and December generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.