Annual average weather for Guanacaste Region, Costa Rica

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Annual Average Weather for Guanacaste Region, Costa Rica

The annual average maximum daily temperature is 32.3°C (90.2°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 9.0 days of rain per month and 6.7 hours of sun per day.

When is the best time to visit Guanacaste Region?

The best months to visit Guanacaste Region are January, February, March, December, 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 July 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 Guanacaste Region year round?

Yes, you can sunbathe in Guanacaste Region all year round.

The coolest month in Guanacaste Region is December when the average maximum temperature is 32°C (89°F), average temperature is 27°C (80°F) and average minimum temperature is 22°C (71°F).

More info about the annual temperatures and sunshine.

Can you swim in Guanacaste Region year round?

Yes, you can swim in Guanacaste Region all year round.

The warmest sea water temperatures in Guanacaste Region are found in March when they peak at 29°C (84°F) and lowest in September when they dip to 24°C (74°F).

The sea temperature is above average for swimming between December and July 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 Guanacaste Region?

The hottest month in Guanacaste Region is April when the average maximum temperature is scorching hot and perfect for sunbathing on clear days, though you may want to only go to the beach early or late to avoid the midday sun 35°C (95°F), average temperature is 29°C (84°F) and average minimum temperature is 24°C (74°F).

More info about the annual temperatures and sunshine.

When is the coldest month in Guanacaste Region?

The coolest month in Guanacaste Region is December when the average maximum temperature is 32°C (89°F), average temperature is 27°C (80°F) and average minimum temperature is 22°C (71°F).

More info about the annual temperatures and sunshine

When is the sunniest month in Guanacaste Region?

The sunniest days in Guanacaste Region are in February which has the most hours of sunshine per day. In February the sunshine percentage is 74.9% making it sunny and pleasant most of the time. The hours of sunshine per day are 8.9hrs making the days long and bright.

More info about the annual sunshine.

When is the least sunny month in Guanacaste Region?

October has the least sunshine. In October the sunshine percentage is 40.9% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.0 hours of sunshine per day.

More info about the annual sunshine.

When is the driest month in Guanacaste Region?

The driest month in Guanacaste Region is January with 0.3cm (0.1inches) of rain and March has the fewest days of rain with 0.1 days with some rain, an extremely dry time to visit the beach.

More info about the annual rainfall

When is the wettest month in Guanacaste Region?

The wettest month in Guanacaste Region is October with 24.9cm (9.8inches) of rain and the most days of rain with 20.1 days with some rain, a very wet time to visit the beach.

More info about the annual rainfall.

When is the sea the coldest in Guanacaste Region?

The coldest sea water temperatures in Guanacaste Region 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 Guanacaste Region?

The warmest sea water temperatures in Guanacaste Region are found in March when they peak at 29°C (84°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 Guanacaste Region?

The most humid month in Guanacaste Region is September with a dew point (an indicator of humidity) of 25°C (76°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 Guanacaste Region?

The least humid month in Guanacaste Region is February with a dew point of 19°C (66°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 Guanacaste Region?

The most windy month in Guanacaste Region is February when the average maximum windspeed is 35KM/H (21MPH) and the average wind speed is 20KM/H (12MPH).

More info about the annual wind conditions.

Annual Temperature for Guanacaste Region

The hottest month in Guanacaste Region is April when the average maximum temperature is 35°C (95°F), average temperature is 29°C (84°F) and average minimum temperature is 24°C (74°F).

The coolest month in Guanacaste Region is December when the average maximum temperature is 32°C (32°F), average temperature is 27°C (80°F) and average minimum temperature is 22°C (71°F).

Annual Sunshine for Guanacaste Region

The longest days in Guanacaste Region 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 Guanacaste Region are in February which has the most hours of sunshine per day. The sunshine percentage is 74.9% making it sunny and pleasant most of the time. The hours of sunshine per day are 8.9hrs making the days long and bright.

October has the least sunshine. The sunshine percentage is 40.9% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.0 hours of sunshine per day.

The ultraviolet index is the highest in April when it reaches 14.9 and lowest in December when it reaches 10.4.

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 Guanacaste Region

The warmest sea water temperatures in Guanacaste Region are found in March when they peak at 29°C (84°F) and lowest in September when they dip to 24°C (74°F).

The sea is best for swimming between December and July 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 Guanacaste Region

The wettest month in Guanacaste Region is October with 24.9cm (9.8inches) of rain and the most days of rain with 20.1 days with some rain, a very wet time to visit the beach.

The driest month in Guanacaste Region is January with 0.3cm (0.1inches) of rain and March has the fewest days of rain with 0.1 days with some rain, an extremely dry time to visit the beach.

Annual Humidity for Guanacaste Region

The most humid month in Guanacaste Region is September with a dew point (an indicator of humidity) of 25°C (76°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 Guanacaste Region is February with a dew point of 19°C (66°F) which is somewhat uncomfortable for most people in cities but fine on a beach.

Annual Wind Speed for Guanacaste Region

The most windy month in Guanacaste Region is February when the average maximum windspeed is 35KM/H (21MPH) and the average wind speed is 20KM/H (12MPH).

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

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