The hottest month in Hualien is July when the average maximum temperature is 34°, average temperature is 30° and average minimum temperature is 27°.
The coolest month in Hualien is January when the average maximum temperature is 19°, average temperature is 16° and average minimum temperature is 14°.
The longest days in Hualien are in June, with an average of 13.6 hours of daylight per day. December has the shortest days with an average of 10.7 hours of daylight per day.
The sunniest days in Hualien are in May which has the most hours of sunshine per day with an average of 6.4 hours of sunshine per day, making it a quite sunny month with some cloud cover. December has the least sunshine with an average of 4.1 hours of sunshine per day, making it a sunny month that is overcast at times.
The ultraviolet index is the highest in July when it reaches 13.2 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 Hualien are found in July when they peak at 29° and lowest in February when they dip to 22°.
The sea is best for swimming between May and December when the temperature is above 26° which is very warm and ideal for relaxing and swimming for the whole day.
The wettest month in Hualien is October with 24.5cm of rain and June has the most days of rain with 19.4 days with some rain, a wet time to visit the beach.
The driest month in Hualien is December with 4.7cm of rain and July has the fewest days of rain with 13.9 days with some rain, a slightly wet time to visit the beach.
The most humid month in Hualien is August with a dew point (an indicator of humidity) of 25° 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 Hualien is January with a dew point of 14° which is comfortable for everyone.
The most windy month in Hualien is September when the average maximum windspeed is 25kmh and the average wind speed is 14kmh.
The least windy month in Hualien is June when the average maximum windspeed is 22kmh and the average wind speed is 9kmh.