Birrí weather in September (Alajuela, Costa Rica)

What kind of weather does September bring to Birrí? Discover if this is the best time for your journey with our detailed monthly weather breakdown.

Temperatures

In September, the weather in Birrí generally includes high temperatures and heavy rainfall. Anticipate daytime highs near 25°C, and cooler nights with temperatures around 17°C.

Precipitation

Birrí in September falls under the rainy season with heavy rainfall, averaging around 397 mm for the month. Rain is expected on roughly 24 days.

Average sunshine

With about 149 hours of sunshine, the area enjoys a nice balance of sun and clouds, creating a pleasant environment.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Birrí. February, March and April typically offer the best circumstances. While May, June, July, August, September, October and November tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Birrí climate page with graphs.

 

Birrí, monthly averages in September

Min Temperature 17°C  

Max Temperature 25°C  

Chance of Rain 81%  

Precipitation 397 mm  

Rainy days 24 days  

Humidity 85% *  

Sunshine 149 hours *  

Percentage Sunshine *  

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

Where to go in Costa Rica in September

Find out more about the weather in Costa Rica and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.

What To Do

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

Interested in more climate information?

This site provides you with all the information you need about the climate in Birrí.

Our site offers climate and forecast data for every country in the world. Are you going to Costa Rica? On this website you can find historical weather averages for many cities in Costa Rica. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.