Birrí Weather in September

In Birrí, September brings high daytime temperatures around 25°C (77°F), with nights cooling to 17°C (63°F). This month falls within the rainy season, so expect frequent rainfall.

Rainfall in Birrí in September

Birrí is in the rainy season in September, with rain on around 24 days and an average of 397 mm (16 in). Rainy season showers here are typically intense, often clearing quickly but coming down hard while they last.

Temperature in Birrí in September

In September, Birrí gets high temperatures, with highs of 25°C (77°F). Nights cool to around 17°C (63°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. 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 Birrí in September

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

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Birrí. Our weather planner can help you explore destinations with more pleasant weather conditions.

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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 Birrí's climate page.

Birrí Temperature in September

Min Temperature 17°C (63°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 81%  

Precipitation 397 mm (16 in)  

Rainy days 24 days  

Humidity 85% *  

Sunshine 149 hours *  

Percentage Sunshine *  

* Data from: San José, Costa Rica (16 KM, 10 Miles).

What to Wear in Birrí in September

Warm but pleasant conditions in Birrí in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Birrí 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 Birrí's climate page.

More climate data for Birrí

Temperature Rainfall Sunshine Humidity

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