The hottest month in Guaruja Beach is February when the average maximum temperature is 31°, average temperature is 27° and average minimum temperature is 23°.
The coolest month in Guaruja Beach is July when the average maximum temperature is 23°, average temperature is 19° and average minimum temperature is 15°.
The longest days in Guaruja Beach are in December, with an average of 13.6 hours of daylight per day. June has the shortest days with an average of 10.7 hours of daylight per day.
The sunniest days in Guaruja Beach are in August which has the most hours of sunshine per day with an average of 7.7 hours of sunshine per day, making it a quite sunny month with some cloud cover. December has the least sunshine with an average of 6 hours of sunshine per day, making it a sunny month that is overcast at times.
The ultraviolet index is the highest in January when it reaches 15.4 and lowest in June when it reaches 5.5.
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 Guaruja Beach are found in February when they peak at 28° and lowest in August when they dip to 19°.
The sea is best for swimming between December and April when the temperature is above 23° which is warm and pleasant for relaxing and swimming for long periods.
The most humid month in Guaruja Beach is February with a dew point (an indicator of humidity) of 24° 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 Guaruja Beach is July with a dew point of 18° which is OK for most but slightly uncomfortable for some.
The most windy month in Guaruja Beach is January when the average maximum windspeed is 18kmh and the average wind speed is 7kmh.
The least windy month in Guaruja Beach is June when the average maximum windspeed is 15kmh and the average wind speed is 5kmh.