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The annual average maximum daily temperature is 27.4°C (81.3°F) which is very warm and perfect for sunbathing on clear days. The annual average water temperature is typically 25.5°C (77.9°F) which is warm and pleasant for relaxing and swimming for long periods. Annually there are on average 16.1 days of rain per month and 8.5 hours of sun per day.
The best months to visit Hilo are May, June, July, 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 July and November when the sea temperature is above the average 26°C (78°F) which is warm and pleasant for relaxing and swimming for long periods.
Yes, you can sunbathe in Hilo all year round.
The coolest month in Hilo is January when the average maximum temperature is 26°C (80°F), average temperature is 22°C (72°F) and average minimum temperature is 18°C (64°F).
More info about the annual temperatures and sunshine.
Yes, you can swim in Hilo all year round.
The warmest sea water temperatures in Hilo are found in September when they peak at 27°C (80°F) and lowest in March when they dip to 24°C (76°F).
The sea temperature is above average for swimming between July and November when the sea temperature is above 26°C (78°F) which is warm and pleasant for relaxing and swimming for long periods.
For perfect swimming and lounging all day, try the months from August to November when the sea temperature is above 26°C (79°F)
More info about the annual sea temperatures
The hottest month in Hilo is September when the average maximum temperature is very warm and perfect for sunbathing on clear days 29°C (84°F), average temperature is 25°C (77°F) and average minimum temperature is 21°C (69°F).
More info about the annual temperatures and sunshine.
The coolest month in Hilo is January when the average maximum temperature is 26°C (80°F), average temperature is 22°C (72°F) and average minimum temperature is 18°C (64°F).
More info about the annual temperatures and sunshine
The driest month in Hilo is June with 12.3cm (4.8inches) of rain and January has the fewest days of rain with 13.4 days with some rain, a pretty wet time to visit the beach.
More info about the annual rainfall
The coldest sea water temperatures in Hilo are found in March when they dip to 24°C (76°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 Hilo are found in September when they peak at 27°C (80°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 Hilo is August 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.
The least humid month in Hilo is February with a dew point of 19°C (65°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 Hilo is February when the average maximum windspeed is 26KM/H (16MPH) and the average wind speed is 10KM/H (6MPH).
More info about the annual wind conditions.
The hottest month in Hilo is September when the average maximum temperature is 29°C (84°F), average temperature is 25°C (77°F) and average minimum temperature is 21°C (69°F).
The coolest month in Hilo is January when the average maximum temperature is 26°C (26°F), average temperature is 22°C (72°F) and average minimum temperature is 18°C (64°F).
The longest days in Hilo are in June, with an average of 13.3 hours of daylight per day. December has the shortest days with an average of 10.9 hours of daylight per day.
The sunniest days in Hilo are in June which has the most hours of sunshine per day. The sunshine percentage is 73% making it sunny and pleasant most of the time. The hours of sunshine per day are 9.5hrs making the days long and bright.
December has the least sunshine. The sunshine percentage is 66% making it sunny but overcast at times. The hours of sunshine per day are 7.2hrs making the days quite long and bright.
The ultraviolet index is the highest in August when it reaches 13.4 and lowest in December when it reaches 7.
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 Hilo are found in September when they peak at 27°C (80°F) and lowest in March when they dip to 24°C (76°F).
The sea is best for swimming between July and November when the temperature is above 26°C (78°F) which is warm and pleasant for relaxing and swimming for long periods.
The wettest month in Hilo is March with 32.8cm (12.9inches) of rain and April has the most days of rain with 18 days with some rain, a wet time to visit the beach.
The driest month in Hilo is June with 12.3cm (4.8inches) of rain and January has the fewest days of rain with 13.4 days with some rain, a pretty wet time to visit the beach.
The most humid month in Hilo is August 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 Hilo is February with a dew point of 19°C (65°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.
