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Sea
26°
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Sea
25°
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24°
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25°
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26°
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26°
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27°
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27°
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27°
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27°
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26°
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25°
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The annual average maximum daily temperature is 27.1°C (80.7°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 19.5 days of rain per month and 6.2 hours of sun per day.
The best months to visit Kailua are June, July, August, September, 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 April to December 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 (79°F) which is warm and pleasant for relaxing and swimming for long periods.
Yes, you can sunbathe in Kailua all year round.
The weather is best for sunbathing in the months from April to December when the maximum temperature reaches above 26°C (72°F)
More info about the annual temperatures and sunshine.
Yes, you can swim in Kailua all year round.
The warmest sea water temperatures in Kailua are found in September when they peak at 27°C (81°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
The hottest month in Kailua is September when the average maximum temperature is very warm and perfect for sunbathing on clear days 29°C (84°F), average temperature is 27°C (80°F) and average minimum temperature is 24°C (75°F).
More info about the annual temperatures and sunshine.
The coolest month in Kailua is February when the average maximum temperature is 25°C (78°F), average temperature is 23°C (73°F) and average minimum temperature is 21°C (69°F).
More info about the annual temperatures and sunshine
The driest month in Kailua is September with 2.3cm (0.9inches) of rain and May has the fewest days of rain with 16.7 days with some rain, a wet time to visit the beach.
More info about the annual rainfall
The coldest sea water temperatures in Kailua 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.
The warmest sea water temperatures in Kailua are found in September when they peak at 27°C (81°F) which is very warm and ideal for relaxing and swimming for the whole day.
More info about the annual sea temperatures.
The most humid month in Kailua is August with a dew point (an indicator of humidity) of 22°C (72°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.
The least humid month in Kailua is February with a dew point of 19°C (67°F) which is somewhat uncomfortable for most people in cities but fine on a beach.
More info about the annual humidity.
The most windy month in Kailua is February when the average maximum windspeed is 23KM/H (14MPH) and the average wind speed is 12KM/H (7MPH).
More info about the annual wind conditions.
The hottest month in Kailua is September when the average maximum temperature is 29°C (84°F), average temperature is 27°C (80°F) and average minimum temperature is 24°C (75°F).
The coolest month in Kailua is February when the average maximum temperature is 25°C (25°F), average temperature is 23°C (73°F) and average minimum temperature is 21°C (69°F).
The longest days in Kailua are in June, with an average of 13.4 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 Kailua are in July which has the most hours of sunshine per day. The sunshine percentage is 57% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.5 hours of sunshine per day.
December has the least sunshine. The sunshine percentage is 46% 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 August when it reaches 13.1 and lowest in December when it reaches 6.3.
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.
The warmest sea water temperatures in Kailua are found in September when they peak at 27°C (81°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.
The wettest month in Kailua is March with 11.2cm (4.4inches) of rain and the most days of rain with 21.1 days with some rain, a very wet time to visit the beach.
The driest month in Kailua is September with 2.3cm (0.9inches) of rain and May has the fewest days of rain with 16.7 days with some rain, a wet time to visit the beach.
The most humid month in Kailua is August with a dew point (an indicator of humidity) of 22°C (72°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 Kailua is February with a dew point of 19°C (67°F) which is somewhat uncomfortable for most people in cities but fine on a beach.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
