Annual average weather for Ishigaki Island, Yaeyama Islands, Japan

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Annual Average Weather for Ishigaki Island, Yaeyama Islands, Japan

The annual average maximum daily temperature is 26.1°C (79.0°F) which is very warm and perfect for sunbathing on clear days. The annual average water temperature is typically 26.5°C (79.7°F) which is very warm and ideal for relaxing and swimming for the whole day. Annually there are on average 14.1 days of rain per month and 5.0 hours of sun per day.

When is the best time to visit Ishigaki Island?

The best months to visit Ishigaki Island are June, 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 May and November when the sea temperature is above the average 26°C (80°F) which is very warm and ideal for relaxing and swimming for the whole day.

Can you sunbathe in Ishigaki Island year round?

No, you can't sunbathe in Ishigaki Island 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 Ishigaki Island year round?

Yes, you can swim in Ishigaki Island all year round.

The warmest sea water temperatures in Ishigaki Island are found in July when they peak at 30°C (85°F) and lowest in February when they dip to 23°C (73°F).

The sea temperature is above average for swimming between May and November when the sea temperature is above 26°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 Ishigaki Island?

The hottest month in Ishigaki Island is July when the average maximum temperature is very hot and perfect for sunbathing on clear days 31°C (89°F), average temperature is 29°C (85°F) and average minimum temperature is 28°C (82°F).

More info about the annual temperatures and sunshine.

When is the coldest month in Ishigaki Island?

The coolest month in Ishigaki Island is January when the average maximum temperature is 20°C (69°F), average temperature is 18°C (65°F) and average minimum temperature is 17°C (62°F).

More info about the annual temperatures and sunshine

When is the sunniest month in Ishigaki Island?

The sunniest days in Ishigaki Island are in May which has the most hours of sunshine per day. In May the sunshine percentage is 48% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.4 hours of sunshine per day.

More info about the annual sunshine.

When is the least sunny month in Ishigaki Island?

December has the least sunshine. In December the sunshine percentage is 34% making it very cloudy and overcast with some periods of sunshine. There are 3.6 hours of sunshine per day.

More info about the annual sunshine.

When is the sea the coldest in Ishigaki Island?

The coldest sea water temperatures in Ishigaki Island are found in February when they dip to 23°C (73°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 Ishigaki Island?

The warmest sea water temperatures in Ishigaki Island are found in July when they peak at 30°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 Ishigaki Island?

The most humid month in Ishigaki Island is August with a dew point (an indicator of humidity) of 26°C (79°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 Ishigaki Island?

The least humid month in Ishigaki Island is January with a dew point of 14°C (58°F) which is comfortable for everyone.

More info about the annual humidity.

When is the windiest month in Ishigaki Island?

The most windy month in Ishigaki Island is December when the average maximum windspeed is 40KM/H (25MPH) and the average wind speed is 31KM/H (19MPH).

More info about the annual wind conditions.

Annual Temperature for Ishigaki Island

The hottest month in Ishigaki Island is July when the average maximum temperature is 31°C (89°F), average temperature is 29°C (85°F) and average minimum temperature is 28°C (82°F).

The coolest month in Ishigaki Island is January when the average maximum temperature is 20°C (20°F), average temperature is 18°C (65°F) and average minimum temperature is 17°C (62°F).

Annual Sunshine for Ishigaki Island

The longest days in Ishigaki Island are in June, with an average of 13.6 hours of daylight per day. December has the shortest days with an average of 10.6 hours of daylight per day.

The sunniest days in Ishigaki Island are in May which has the most hours of sunshine per day. The sunshine percentage is 48% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.4 hours of sunshine per day.

December has the least sunshine. The sunshine percentage is 34% making it very cloudy and overcast with some periods of sunshine. There are 3.6 hours of sunshine per day.

The ultraviolet index is the highest in July when it reaches 12.9 and lowest in December when it reaches 5.9.

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 Ishigaki Island

The warmest sea water temperatures in Ishigaki Island are found in July when they peak at 30°C (85°F) and lowest in February when they dip to 23°C (73°F).

The sea is best for swimming between May and November when the temperature is above 26°C (80°F) which is very warm and ideal for relaxing and swimming for the whole day.

Annual Humidity for Ishigaki Island

The most humid month in Ishigaki Island is August with a dew point (an indicator of humidity) of 26°C (79°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 Ishigaki Island is January with a dew point of 14°C (58°F) which is comfortable for everyone.

Annual Wind Speed for Ishigaki Island

The most windy month in Ishigaki Island is December when the average maximum windspeed is 40KM/H (25MPH) and the average wind speed is 31KM/H (19MPH).

The least windy month in Ishigaki Island is May when the average maximum windspeed is 28KM/H (18MPH) and the average wind speed is 21KM/H (13MPH).

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