Alajuela weather in September (Alajuela, Costa Rica)

Is September a good time to explore Alajuela weather-wise? Thinking about a visit? Explore this page for a full overview of the weather conditions this month.

Temperatures

In September, Alajuela usually has high temperatures and heavy rainfall. The temperature during the day can rise to approximately 25°C. At night, it falls to around 17°C.

Precipitation

Alajuela in September falls under the rainy season with heavy rainfall, averaging around 433 mm for the month. Climate data suggests that about 24 days will experience rainfall.

Average sunshine

The area enjoys a moderate level of sunlight, with around 149 hours. It's a good balance between sunny and cloudy days.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Alajuela. January, February, March and April generally stand out with the best circumstances. While May, June, July, August, September and October tend to showcase less optimal conditions.

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

 

Alajuela, monthly averages in September

Min Temperature 17°C  

Max Temperature 25°C  

Chance of Rain 80%  

Precipitation 433 mm  

Rainy days 24 days  

Humidity 85% *  

Sunshine 149 hours *  

Percentage Sunshine *  

Data from: San José, Costa Rica (17 KM, 11 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 Alajuela.

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.