San Gerardo weather in September (Alajuela, Costa Rica)

Will it be warm or cold in San Gerardo this September? Get all the weather information you need to plan your visit.

Temperatures

The typical weather for September in San Gerardo includes high temperatures and heavy rainfall. Daytime temperatures generally settle around 27°C, while nighttime can see a dip to about 20°C.

Precipitation

San Gerardo in September falls under the rainy season with heavy rainfall, averaging around 331 mm for the month. Rain is expected on roughly 23 days.

Average sunshine

The area enjoys a balanced 159 hours of sunlight, ensuring it's neither too overcast nor too sunny.

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

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

 

San Gerardo, monthly averages in September

Min Temperature 20°C  

Max Temperature 27°C  

Chance of Rain 78%  

Precipitation 331 mm  

Rainy days 23 days  

Sunshine 159 hours *  

Percentage Sunshine *  

Data from: Puntarenas, Costa Rica (48 KM, 29 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 San Gerardo.

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.