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Costa Rica

Costa Rica Weather in August: Heavy Rains

Limon Costa Rica weather in August
Average high temperature and rainfall for Limón Costa Rica in August. © 2021 Scott S. Bateman

Costa Rica weather in August is fully into the rainy season with heavy rainfall on both the Caribbean and Pacific coasts.

Costa Rica in Central America has two active cruise ports. One is Limón on the Caribbean coast. The other is Puntarenas on the Pacific coast.

Both destinations attract many cruise ships to this lush eco tourism destination despite heavy rains throughout the year. But some months have less rain than others.

Limón Weather in August



This video explains Caribbean weather in August and which islands are the best and worst to visit for weather.

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Limón on the Caribbean coast has an average rainfall of nearly 13 inches in August, according to the Costa Rica National Meteorological Institute. Although the rainfall is heavy, it isn’t as bad as the 17 inches historically in July.

August’s risk of rain is twice as high as the brief “dry” seasons of six inches in September and eight inches in March.

The average rainfall also is higher than any other major destination in the Caribbean during August.

It rains an average of 19 days during the month, the third highest of the year. That compares to a low of 14 days in September.

Temperatures are comfortable with an average high of 86 degrees Fahrenheit or about 30 Celsius. But expect high humidity. The average low temperature is 72 Fahrenheit or 22 Celsius.

Puntarenas Weather in August

Puntarenas on the Pacific coast also has heavy rains during the year. It’s just not as bad as Limón.

The average rainfall is nine inches in August, according to theNational Meteorological Institute. It rains on average 22 days during the month. This compares to a low point of only two days in January and February during the Puntarenas dry season.

The average daytime temperature in August is about 90 Fahrenheit or 32 Celsius. The average nighttime temperature is 74 Fahrenheit or 24 Celsius.

San Jose, which is near Puntarenas, has an average rainfall of 10 inches in August, up from more than eight inches in July.

San Jose is in the interior of the country, which has cooler temperatures.  The average daytime temperature is 77 Fahrenheit or 26 Celsius. The average nighttime temperature is 62 Fahrenheit or 17 Celsius.

  • Costa Rica weather in January, February, March, April, May, June, July, August, September, October, November, December

Scott S. Bateman is a professional journalist who has traveled widely throughout the Caribbean and the Americas. He is the author of four books about cruising in the Caribbean, Alaska and Mexican Riviera.
July 12, 2021