The hottest month in Illocos Norte is May when the average maximum temperature is 34°, average temperature is 30° and average minimum temperature is 27°.
The coolest month in Illocos Norte is January when the average maximum temperature is 30°, average temperature is 26° and average minimum temperature is 22°.
The longest days in Illocos Norte are in June, with an average of 13.2 hours of daylight per day. December has the shortest days with an average of 11 hours of daylight per day.
The sunniest days in Illocos Norte are in April which has the most hours of sunshine per day with an average of 8.8 hours of sunshine per day, making it a sunny month with few clouds. September has the least sunshine with an average of 4.9 hours of sunshine per day, making it a sunny month that is overcast at times.
The ultraviolet index is the highest in April when it reaches 13.8 and lowest in December when it reaches 8.
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 Illocos Norte are found in July when they peak at 30° and lowest in January when they dip to 26°.
The sea is excellent for swimming all year round as the water temperature is very warm and ideal for relaxing and swimming for the whole day.
The wettest month in Illocos Norte is August with 54.7cm of rain and the most days of rain with 17.5 days with some rain, a wet time to visit the beach.
The driest month in Illocos Norte is February with 0.1cm of rain and March has the fewest days of rain with 0.5 days with some rain, an extremely dry time to visit the beach.
The most humid month in Illocos Norte is June with a dew point (an indicator of humidity) of 27° which is extremely humid and uncomfortable unless you are on a beach. At night you would most likely require airconditioning.
The least humid month in Illocos Norte is January with a dew point of 22° 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 most windy month in Illocos Norte is February when the average maximum windspeed is 24kmh and the average wind speed is 10kmh.
The least windy month in Illocos Norte is April when the average maximum windspeed is 21kmh and the average wind speed is 10kmh.
