Annual average weather for Kapaa, United States

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Annual Average Weather for Kapaa, United States

The annual average maximum daily temperature is 28.0°C (82.3°F) which is very warm and perfect for sunbathing on clear days. The annual average water temperature is typically 25.9°C (78.7°F) which is warm and pleasant for relaxing and swimming for long periods. Annually there are on average 7.7 days of rain per month and 7.1 hours of sun per day.

When is the best time to visit Kapaa?

The best months to visit Kapaa are May, July, August, September, 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 May and November when the sea temperature is above the average 26°C (79°F) which is warm and pleasant for relaxing and swimming for long periods.

Can you sunbathe in Kapaa year round?

Yes, you can sunbathe in Kapaa all year round.

The coolest month in Kapaa is January when the average maximum temperature is 26°C (79°F), average temperature is 22°C (72°F) and average minimum temperature is 19°C (67°F).

More info about the annual temperatures and sunshine.

Can you swim in Kapaa year round?

Yes, you can swim in Kapaa all year round.

The warmest sea water temperatures in Kapaa are found in September when they peak at 28°C (82°F) and lowest in March when they dip to 24°C (75°F).

The sea temperature is above average for swimming between May and November when the sea temperature is above 26°C (79°F) which is warm and pleasant for relaxing and swimming for long periods.

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

More info about the annual sea temperatures

When is the hottest month in Kapaa?

The hottest month in Kapaa is September when the average maximum temperature is very warm and perfect for sunbathing on clear days 30°C (86°F), average temperature is 26°C (80°F) and average minimum temperature is 23°C (73°F).

More info about the annual temperatures and sunshine.

When is the coldest month in Kapaa?

The coolest month in Kapaa is January when the average maximum temperature is 26°C (79°F), average temperature is 22°C (72°F) and average minimum temperature is 19°C (67°F).

More info about the annual temperatures and sunshine

When is the sunniest month in Kapaa?

The sunniest days in Kapaa are in April which has the most hours of sunshine per day. In April the sunshine percentage is 68% making it sunny but overcast at times. The hours of sunshine per day are 8.4hrs making the days long and bright.

More info about the annual sunshine.

When is the least sunny month in Kapaa?

December has the least sunshine. In December the sunshine percentage is 47% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.1 hours of sunshine per day.

More info about the annual sunshine.

When is the driest month in Kapaa?

The driest month in Kapaa is July with 0.8cm (0.3inches) of rain and August has the fewest days of rain with 5.9 days with some rain, a quite rainy time to visit the beach.

More info about the annual rainfall

When is the wettest month in Kapaa?

The wettest month in Kapaa is December with 9.4cm (3.7inches) of rain and the most days of rain with 10 days with some rain, a quite rainy time to visit the beach.

More info about the annual rainfall.

When is the sea the coldest in Kapaa?

The coldest sea water temperatures in Kapaa are found in March when they dip to 24°C (75°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 Kapaa?

The warmest sea water temperatures in Kapaa are found in September when they peak at 28°C (82°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 Kapaa?

The most humid month in Kapaa is October with a dew point (an indicator of humidity) of 21°C (70°F) which is very humid and quite uncomfortable for most unless you are on a beach. At night you would most likely require a fan.

More info about the annual humidity.

When is the least humid month in Kapaa?

The least humid month in Kapaa is February with a dew point of 18°C (64°F) which is OK for most but slightly uncomfortable for some.

More info about the annual humidity.

When is the windiest month in Kapaa?

The most windy month in Kapaa is January when the average maximum windspeed is 22KM/H (14MPH) and the average wind speed is 11KM/H (7MPH).

More info about the annual wind conditions.

Annual Temperature for Kapaa

The hottest month in Kapaa is September when the average maximum temperature is 30°C (86°F), average temperature is 26°C (80°F) and average minimum temperature is 23°C (73°F).

The coolest month in Kapaa is January when the average maximum temperature is 26°C (26°F), average temperature is 22°C (72°F) and average minimum temperature is 19°C (67°F).

Annual Sunshine for Kapaa

The longest days in Kapaa are in June, with an average of 13.5 hours of daylight per day. December has the shortest days with an average of 10.8 hours of daylight per day.

The sunniest days in Kapaa are in April which has the most hours of sunshine per day. The sunshine percentage is 68% making it sunny but overcast at times. The hours of sunshine per day are 8.4hrs making the days long and bright.

December has the least sunshine. The sunshine percentage is 47% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.1 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 6.2.

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 Kapaa

The warmest sea water temperatures in Kapaa are found in September when they peak at 28°C (82°F) and lowest in March when they dip to 24°C (75°F).

The sea is best for swimming between May and November when the temperature is above 26°C (79°F) which is warm and pleasant for relaxing and swimming for long periods.

Annual Rainfall for Kapaa

The wettest month in Kapaa is December with 9.4cm (3.7inches) of rain and the most days of rain with 10 days with some rain, a quite rainy time to visit the beach.

The driest month in Kapaa is July with 0.8cm (0.3inches) of rain and August has the fewest days of rain with 5.9 days with some rain, a quite rainy time to visit the beach.

Annual Humidity for Kapaa

The most humid month in Kapaa is October with a dew point (an indicator of humidity) of 21°C (70°F) which is very humid and quite uncomfortable for most unless you are on a beach. At night you would most likely require a fan.

The least humid month in Kapaa is February with a dew point of 18°C (64°F) which is OK for most but slightly uncomfortable for some.

Annual Wind Speed for Kapaa

The most windy month in Kapaa is January when the average maximum windspeed is 22KM/H (14MPH) and the average wind speed is 11KM/H (7MPH).

The least windy month in Kapaa is July when the average maximum windspeed is 18KM/H (11MPH) and the average wind speed is 7KM/H (4MPH).

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