Osa Peninsula Weather

Do not believe weather app predictions on the Osa. The peninsula creates it's own weather that is impossible to predict. All apps will predict rain every day here, but that is not accurate!

Costa Rica has only 2 seasons: the dry and the rainy season. The dry season is from December- April and the rainy season from May- November. However during rainy months it may only rain late in the afternoon or at night so visitors still enjoy sunny days on the beach and outdoor activities during the daytime. Costa Rica is only 1000km north of the equator, so the sun rises at about 5 am and sets at about 6 pm consistently throughout the year. The average annual temperature is around 21 to 27 degrees Celsius or 70 to 81 degrees Fahrenheit. Below is a table show you what kind of climate to expect on the Osa Peninsula.

Month

Average Temperature Fahrenheit

Average Temperature Celsius

Monthly Average Rainy Days/Nights

January 92 33.3 2

February 94 34.4 2

March 94 34.4 1

April 95 35.1 3

May 92 33.3 14

June 88 31.1 17

July 90 32.2 16

August 89 31.7 17

September 89 31.7 22

October 88 31.7 20

November 90 32.2 13

December 90 32.2 5