San Isidro weather in December (San José, Costa Rica)

How's the weather trend in San Isidro as December approaches? Check out our in-depth weather guide for this month.

Temperatures

In December, San Isidro tends to experience high temperatures and heavy rainfall. Expect the temperatures during the day to hover around 24°C. At night, they will likely drop to about 16°C.

Precipitation

San Isidro in December falls under the rainy season with heavy rainfall, averaging around 249 mm for the month. Analyzing past climate data, one can expect approximately 16 days of rain.

Average sunshine

There are approximately 249 hours of sunshine this month, meaning plenty of sunny days and a vibrant atmosphere.

Should you favor a climate that's both dry and comfortably warm January, February and March typically offer the most agreeable circumstances. On the other hand, May, June, July, August, September, October and November tend to be characterized by conditions that may not be as optimal.

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

 

San Isidro, monthly averages in December

Min Temperature 16°C  

Max Temperature 24°C  

Chance of Rain 53%  

Precipitation 249 mm  

Rainy days 16 days  

Humidity 81% *  

Sunshine 249 hours *  

Percentage Sunshine *  

Data from: Quepos, Costa Rica (50 KM, 31 Miles).

Where to go in Costa Rica in December

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?

For visitors traveling to San Isidro, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

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

Swimming

8/10

Camping

6/10

Interested in more climate information?

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

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.