Poasito Weather in September

September in Poasito averages 26°C (79°F) during the day and 18°C (64°F) at night. September is part of the rainy season, with around 355 mm (14 in) of rainfall and frequent showers.

Rainfall in Poasito in September

As part of the rainy season, Poasito sees around 24 days of rain in September, with an average of 355 mm (14 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.

Temperature in Poasito in September

If you're visiting Poasito in September, expect highs of 26°C (79°F) and overnight lows around 18°C (64°F). This kind of day-to-night contrast is typical for this time of year. With lows of 18°C (64°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 Poasito in September

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

September in Poasito 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 Poasito's climate page.

Poasito Temperature in September

Min Temperature 18°C (64°F)  

Max Temperature 26°C (79°F)  

Chance of Rain 80%  

Precipitation 355 mm (14 in)  

Rainy days 24 days  

Humidity 85% *  

Sunshine 149 hours *  

Percentage Sunshine *  

* Data from: San José, Costa Rica (29 KM, 18 Miles).

What to Wear in Poasito in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Poasito in September

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

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

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 Poasito's climate page.

More climate data for Poasito

Temperature Rainfall Sunshine Humidity

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