Annual average weather for Okinawa, Okinawa Island, Japan

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Annual Average Weather for Okinawa, Okinawa Island, Japan

The annual average maximum daily temperature is 25.4°C (77.7°F) which is very warm and perfect for sunbathing on clear days. The annual average water temperature is typically 25.2°C (77.3°F) which is warm and pleasant for relaxing and swimming for long periods. Annually there are on average 20.3 days of rain per month and 7.3 hours of sun per day.

When is the best time to visit Okinawa?

The best months to visit Okinawa are March, July, September, October, for the best beach weather, the most sunshine and optimal sunbathing and swimming conditions with the least chance of rain.

The weather is perfect for sunbathing in the months from May to October when the maximum temperature reaches above 26°C (72°F)

The sea is best for swimming between June and November when the sea temperature is above the average 25°C (77°F) which is warm and pleasant for relaxing and swimming for long periods.

Can you sunbathe in Okinawa year round?

No, you can't sunbathe in Okinawa all year round. Some months are too cold for sunbathing, however you might enjoy other beach activities such as taking a walk, going hiking along trails or just enjoying the scenery.

The weather is best for sunbathing in the months from May to October when the maximum temperature reaches above 26°C (72°F)

More info about the annual temperatures and sunshine.

Can you swim in Okinawa year round?

Yes, you can swim in Okinawa all year round.

The warmest sea water temperatures in Okinawa are found in July when they peak at 29°C (85°F) and lowest in February when they dip to 22°C (71°F).

The sea temperature is above average for swimming between June and November when the sea temperature is above 25°C (77°F) which is warm and pleasant for relaxing and swimming for long periods.

For perfect swimming and lounging all day, try the months from June to October when the sea temperature is above 26°C (79°F)

More info about the annual sea temperatures

When is the hottest month in Okinawa?

The hottest month in Okinawa is July when the average maximum temperature is very hot and perfect for sunbathing on clear days 31°C (88°F), average temperature is 29°C (83°F) and average minimum temperature is 26°C (79°F).

More info about the annual temperatures and sunshine.

When is the coldest month in Okinawa?

The coolest month in Okinawa is January when the average maximum temperature is 19°C (66°F), average temperature is 16°C (60°F) and average minimum temperature is 12°C (54°F).

More info about the annual temperatures and sunshine

When is the sunniest month in Okinawa?

The sunniest days in Okinawa are in June which has the most hours of sunshine per day. In June the sunshine percentage is 65% making it sunny but overcast at times. The hours of sunshine per day are 8.8hrs making the days long and bright.

More info about the annual sunshine.

When is the least sunny month in Okinawa?

December has the least sunshine. In December the sunshine percentage is 50% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.2 hours of sunshine per day.

More info about the annual sunshine.

When is the driest month in Okinawa?

The driest month in Okinawa is January with 9.7cm (3.8inches) of rain and July has the fewest days of rain with 14.6 days with some rain, a pretty wet time to visit the beach.

More info about the annual rainfall

When is the wettest month in Okinawa?

The wettest month in Okinawa is June with 34.6cm (13.6inches) of rain and January has the most days of rain with 22 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 Okinawa?

The coldest sea water temperatures in Okinawa are found in February when they dip to 22°C (71°F) which is comfortable for swimming though some may prefer warmer water.

More info about the annual sea temperatures.

When is the sea the warmest in Okinawa?

The warmest sea water temperatures in Okinawa are found in July when they peak at 29°C (85°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 Okinawa?

The most humid month in Okinawa is July with a dew point (an indicator of humidity) of 27°C (80°F) which is extremely humid and uncomfortable 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 Okinawa?

The least humid month in Okinawa is January with a dew point of 14°C (57°F) which is comfortable for everyone.

More info about the annual humidity.

When is the windiest month in Okinawa?

The most windy month in Okinawa is October when the average maximum windspeed is 31KM/H (19MPH) and the average wind speed is 18KM/H (11MPH).

More info about the annual wind conditions.

Annual Temperature for Okinawa

The hottest month in Okinawa is July when the average maximum temperature is 31°C (88°F), average temperature is 29°C (83°F) and average minimum temperature is 26°C (79°F).

The coolest month in Okinawa is January when the average maximum temperature is 19°C (19°F), average temperature is 16°C (60°F) and average minimum temperature is 12°C (54°F).

Annual Sunshine for Okinawa

The longest days in Okinawa are in June, with an average of 13.8 hours of daylight per day. December has the shortest days with an average of 10.5 hours of daylight per day.

The sunniest days in Okinawa are in June which has the most hours of sunshine per day. The sunshine percentage is 65% making it sunny but overcast at times. The hours of sunshine per day are 8.8hrs making the days long and bright.

December has the least sunshine. The sunshine percentage is 50% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.2 hours of sunshine per day.

The ultraviolet index is the highest in July when it reaches 12.7 and lowest in December when it reaches 5.3.

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 Okinawa

The warmest sea water temperatures in Okinawa are found in July when they peak at 29°C (85°F) and lowest in February when they dip to 22°C (71°F).

The sea is best for swimming between June and November when the temperature is above 25°C (77°F) which is warm and pleasant for relaxing and swimming for long periods.

Annual Rainfall for Okinawa

The wettest month in Okinawa is June with 34.6cm (13.6inches) of rain and January has the most days of rain with 22 days with some rain, a very wet time to visit the beach.

The driest month in Okinawa is January with 9.7cm (3.8inches) of rain and July has the fewest days of rain with 14.6 days with some rain, a pretty wet time to visit the beach.

Annual Humidity for Okinawa

The most humid month in Okinawa is July with a dew point (an indicator of humidity) of 27°C (80°F) which is extremely humid and uncomfortable unless you are on a beach. At night you would most likely require airconditioning.

The least humid month in Okinawa is January with a dew point of 14°C (57°F) which is comfortable for everyone.

Annual Wind Speed for Okinawa

The most windy month in Okinawa is October when the average maximum windspeed is 31KM/H (19MPH) and the average wind speed is 18KM/H (11MPH).

The least windy month in Okinawa is January when the average maximum windspeed is 27KM/H (17MPH) and the average wind speed is 16KM/H (10MPH).

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