San Pedro Weather in September

September in San Pedro sees daytime temperatures around 24°C (75°F) and lows of 16°C (61°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.

Rainfall in San Pedro in September

As part of the rainy season, San Pedro sees around 24 days of rain in September, with an average of 461 mm (18 in). Rainy season showers here are typically intense, often clearing quickly but coming down hard while they last.

Temperature in San Pedro in September

In September, expect high temperatures in San Pedro, with highs of 24°C (75°F) and lows of 16°C (61°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows of 16°C (61°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 Pedro in September

The area enjoys a balanced 149 hours of sunlight, ensuring it's neither too rainy nor too sunny.

September in San Pedro 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.

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• January
• February
• March
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• May
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For a detailed overview over the year and the best time to visit Costa Rica, check out our San Pedro's climate page.

San Pedro Temperature in September

Min Temperature 16°C (61°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 80%  

Precipitation 461 mm (18 in)  

Rainy days 24 days  

Humidity 85% *  

Sunshine 149 hours *  

Percentage Sunshine *  

* Data from: San José, Costa Rica (3 KM, 2 Miles).

What to Wear in San Pedro in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in San Pedro in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Camping

6/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Costa Rica, check out our San Pedro's climate page.

More climate data for San Pedro

Temperature Rainfall Sunshine Humidity

See the full San Pedro climate overview or explore weather in Costa Rica.