Annual average weather for Osa Peninsula, Costa Rica

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Annual Average Weather for Osa Peninsula, Costa Rica

The annual average maximum daily temperature is 31.5°C (88.7°F) which is very hot and perfect for sunbathing on clear days. The annual average water temperature is typically 26.9°C (80.4°F) which is very warm and ideal for relaxing and swimming for the whole day. Annually there are on average 10.2 days of rain per month and 6.0 hours of sun per day.

When is the best time to visit Osa Peninsula?

The best months to visit Osa Peninsula are January, February, March, April, for the best beach weather, the most sunshine and optimal sunbathing and swimming conditions with the least chance of rain.

The sea is best for swimming between December and August when the sea temperature is above the average 27°C (80°F) which is very warm and ideal for relaxing and swimming for the whole day.

Can you sunbathe in Osa Peninsula year round?

Yes, you can sunbathe in Osa Peninsula all year round.

The coolest month in Osa Peninsula is December when the average maximum temperature is 31°C (88°F), average temperature is 26°C (79°F) and average minimum temperature is 22°C (71°F).

More info about the annual temperatures and sunshine.

Can you swim in Osa Peninsula year round?

Yes, you can swim in Osa Peninsula all year round.

The warmest sea water temperatures in Osa Peninsula are found in April when they peak at 29°C (83°F) and lowest in September when they dip to 24°C (74°F).

The sea temperature is above average for swimming between December and August when the sea temperature is above 27°C (80°F) which is very warm and ideal for relaxing and swimming for the whole day.

More info about the annual sea temperatures

When is the hottest month in Osa Peninsula?

The hottest month in Osa Peninsula is April when the average maximum temperature is very hot and perfect for sunbathing on clear days 34°C (92°F), average temperature is 28°C (83°F) and average minimum temperature is 23°C (74°F).

More info about the annual temperatures and sunshine.

When is the coldest month in Osa Peninsula?

The coolest month in Osa Peninsula is December when the average maximum temperature is 31°C (88°F), average temperature is 26°C (79°F) and average minimum temperature is 22°C (71°F).

More info about the annual temperatures and sunshine

When is the sunniest month in Osa Peninsula?

The sunniest days in Osa Peninsula are in February which has the most hours of sunshine per day. In February the sunshine percentage is 66.3% making it sunny but overcast at times. The hours of sunshine per day are 7.8hrs making the days quite long and bright.

More info about the annual sunshine.

When is the least sunny month in Osa Peninsula?

October has the least sunshine. In October the sunshine percentage is 38% making it very cloudy and overcast with some periods of sunshine. There are 4.7 hours of sunshine per day.

More info about the annual sunshine.

When is the driest month in Osa Peninsula?

The driest month in Osa Peninsula is February with 1cm (0.4inches) of rain and the least days of rain with 2.3 days with some rain, a very dry time to visit the beach.

More info about the annual rainfall

When is the wettest month in Osa Peninsula?

The wettest month in Osa Peninsula is October with 21.5cm (8.5inches) of rain and the most days of rain with 18.5 days with some rain, a wet time to visit the beach.

More info about the annual rainfall.

When is the sea the coldest in Osa Peninsula?

The coldest sea water temperatures in Osa Peninsula are found in September when they dip to 24°C (74°F) which is warm and pleasant for relaxing and swimming for long periods.

More info about the annual sea temperatures.

When is the sea the warmest in Osa Peninsula?

The warmest sea water temperatures in Osa Peninsula are found in April when they peak at 29°C (83°F) which is very warm and ideal for relaxing and swimming for the whole day.

More info about the annual sea temperatures.

When is the most humid month in Osa Peninsula?

The most humid month in Osa Peninsula is June with a dew point (an indicator of humidity) of 24°C (75°F) which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning.

More info about the annual humidity.

When is the least humid month in Osa Peninsula?

The least humid month in Osa Peninsula is February with a dew point of 20°C (67°F) which is somewhat uncomfortable for most people in cities but fine on a beach.

More info about the annual humidity.

When is the windiest month in Osa Peninsula?

The most windy month in Osa Peninsula is February when the average maximum windspeed is 31KM/H (19MPH) and the average wind speed is 17KM/H (11MPH).

More info about the annual wind conditions.

Annual Temperature for Osa Peninsula

The hottest month in Osa Peninsula is April when the average maximum temperature is 34°C (92°F), average temperature is 28°C (83°F) and average minimum temperature is 23°C (74°F).

The coolest month in Osa Peninsula is December when the average maximum temperature is 31°C (31°F), average temperature is 26°C (79°F) and average minimum temperature is 22°C (71°F).

Annual Sunshine for Osa Peninsula

The longest days in Osa Peninsula are in June, with an average of 12.7 hours of daylight per day. December has the shortest days with an average of 11.5 hours of daylight per day.

The sunniest days in Osa Peninsula are in February which has the most hours of sunshine per day. The sunshine percentage is 66.3% making it sunny but overcast at times. The hours of sunshine per day are 7.8hrs making the days quite long and bright.

October has the least sunshine. The sunshine percentage is 38% making it very cloudy and overcast with some periods of sunshine. There are 4.7 hours of sunshine per day.

The ultraviolet index is the highest in April when it reaches 15.1 and lowest in December when it reaches 10.7.

An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Annual Sea Temperature for Osa Peninsula

The warmest sea water temperatures in Osa Peninsula are found in April when they peak at 29°C (83°F) and lowest in September when they dip to 24°C (74°F).

The sea is best for swimming between December and August when the temperature is above 27°C (80°F) which is very warm and ideal for relaxing and swimming for the whole day.

Annual Rainfall for Osa Peninsula

The wettest month in Osa Peninsula is October with 21.5cm (8.5inches) of rain and the most days of rain with 18.5 days with some rain, a wet time to visit the beach.

The driest month in Osa Peninsula is February with 1cm (0.4inches) of rain and the least days of rain with 2.3 days with some rain, a very dry time to visit the beach.

Annual Humidity for Osa Peninsula

The most humid month in Osa Peninsula is June with a dew point (an indicator of humidity) of 24°C (75°F) which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning.

The least humid month in Osa Peninsula is February with a dew point of 20°C (67°F) which is somewhat uncomfortable for most people in cities but fine on a beach.

Annual Wind Speed for Osa Peninsula

The most windy month in Osa Peninsula is February when the average maximum windspeed is 31KM/H (19MPH) and the average wind speed is 17KM/H (11MPH).

The least windy month in Osa Peninsula is October when the average maximum windspeed is 17KM/H (11MPH) and the average wind speed is 7KM/H (4MPH).

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