San Isidro Weather in September

With daytime temperatures of 24°C (75°F) and nighttime lows of 17°C (63°F), September in San Isidro brings high temperatures during the day. Do keep in mind that September is part of the rainy season, with frequent and often heavy rainfall.

Rainfall in San Isidro in September

As part of the rainy season, San Isidro sees around 23 days of rain in September, with an average of 655 mm (26 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 September

Expect highs of 24°C (75°F) in San Isidro in September, with nights dropping to around 17°C (63°F). This kind of day-to-night contrast is typical for this time of year. With lows of 17°C (63°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in San Isidro in September

The area enjoys a balanced 153 hours of sunlight, ensuring it's neither too rainy nor too sunny.

September in San Isidro has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.