Weather in Osa Peninsula, Costa Rica in September

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Visiting Osa Peninsula, Costa Rica in September

September has average maximum temperatures of 31°C (87°F) which is very hot and perfect for sunbathing on clear days. The sunshine percentage is 40.7% making it quite sunny but with regular periods of cloudy and overcast skies. There are 4.9 hours of sunshine per day. September has total rainfall of 19.5cm (7.7inches) making it a bit rainy but with only moderate tropical showers. There are 18.1 days with some rainfall so you can still enjoy the beach on the clear days. It is not an optimal time for sunbathing but it is possible on clearer days in Osa Peninsula. Sea temperatures are a warm 24°C (74°F). September is a good month for swimming in Osa Peninsula with comfortable temperatures for most people.

Consider visiting Osa Peninsula in the months of January, February, March, April, for the best beach weather.

Also consider one of our other suggestions for September.

Can you sunbathe in Osa Peninsula in September?

Yes, September is not an optimal time for sunbathing but it is possible on clearer days in Osa Peninsula.

September has average maximum temperatures of 31°C (87°F) which is very hot and perfect for sunbathing on clear days. The sunshine percentage is 40.7% making it quite sunny but with regular periods of cloudy and overcast skies. There are 4.9 hours of sunshine per day. September has total rainfall of 19.5cm (7.7inches) making it a bit rainy but with only moderate tropical showers. There are 18.1 days with some rainfall so you can still enjoy the beach on the clear days.

More about September temperature and sunshine.

Can you swim in Osa Peninsula in September?

Yes, September is a good month for swimming in Osa Peninsula with warm sea temperatures 24°C (74°F).

More about September sea temperatures.

Is September a good time to holiday in Osa Peninsula?

Yes, September is a good time for a holiday in Osa Peninsula.

September has average maximum temperatures of 31°C (87°F) which is very hot and perfect for sunbathing on clear days. The sunshine percentage is 40.7% making it quite sunny but with regular periods of cloudy and overcast skies. There are 4.9 hours of sunshine per day. September has total rainfall of 19.5cm (7.7inches) making it a bit rainy but with only moderate tropical showers. There are 18.1 days with some rainfall so you can still enjoy the beach on the clear days. It is not an optimal time for sunbathing but it is possible on clearer days in Osa Peninsula. Sea temperatures are a warm 24°C (74°F). September is a good month for swimming in Osa Peninsula with comfortable temperatures for most people.

More about the September temperatures and sunshine.

Is Osa Peninsula warm in September?

Yes, Osa Peninsula is very hot and perfect for sunbathing on clear days in September.

The average maximum temperature in Osa Peninsula in September is 31°C (87°F). The average maximum temperature is 31°C (88°) in the previous month and 30°C (86°F) in the next month.

The average temperature in Osa Peninsula in September is 27°C (80°F). The average temperature is 27°C (80°F) in the previous month and 26°C (79°F) in the next month.

More info about the September temperatures and sunshine.

How sunny is Osa Peninsula in September?

The average day light hours per day in Osa Peninsula in September are 12.2. The sunshine percentage is 40.7% making it quite sunny but with regular periods of cloudy and overcast skies. There are 4.9 hours of sunshine per day.

More about September sunshine.

Temperature in Osa Peninsula in September

The average maximum temperature in Osa Peninsula in September is 31°C (87°F). The average maximum temperature is 31°C (88°F) in the previous month and 30°C (86°F) in the next month.

The average temperature in Osa Peninsula in September is 27°C (80°F). The average temperature is 27°C (80°F) in the previous month and 26°C (79°F) in the next month.

The average minimum temperature in Osa Peninsula in September is 23°C (73°F). The minimum temperature is 23°C (74°F) in the previous month and 23°C (73°F) in the next month.

Sunshine in Osa Peninsula in September

During September the average day light hours are 12.2 per day in Osa Peninsula. The sunshine percentage is 40.7% making it quite sunny but with regular periods of cloudy and overcast skies. There are 4.9 hours of sunshine per day.

The ultraviolet index in Osa Peninsula in September is typically 13.8 during September. 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.

Sea Temperature in Osa Peninsula in September

The average sea water temperature in Osa Peninsula in September is 23.6°C (74.5°F) which is warm and pleasant for relaxing and swimming for long periods.

Rainfall in Osa Peninsula in September

The average total rainfall in Osa Peninsula in September is 19.5cm (7.7inches) and on average there are 18.1 rainy days in September making it a wet time to visit the beach.

Humidity in Osa Peninsula in September

The maximum dew point (an indicator of humidity) in Osa Peninsula in September is 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 dew point is 24°C (75°F) in the previous month and 24°C (24°F) in the next month.

The average maximum relative humidity in Osa Peninsula in September is typically 95.3%. The maximum relative humidity is 94.1% in the previous month and 95.5% in the next month.

The average relative humidity in Osa Peninsula in September is typically 79.8%. The average relative humidity is 76.9% in the previous month and 81.6% in the next month.

Wind Speed in Osa Peninsula in September

The average maximum wind speed in Osa Peninsula in September is typically 19KM/H (11MPH). The average maximum wind speed is 20KM/H (13MPH) in the previous month and 17KM/H (11MPH) in the next month.

The average wind speed in Osa Peninsula in September is typically 7KM/H (4MPH). The average wind speed is 8KM/H (5MPH) in the previous month and 7KM/H (4MPH) in the next month.

The average wind direction in Osa Peninsula in September is from the South.

Monthly Averages

Suggested Beaches in September

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Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.

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Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.