The hottest month in Flag Beach is August when the average maximum temperature is 28°, average temperature is 25° and average minimum temperature is 23°.
The coolest month in Flag Beach is February when the average maximum temperature is 21°, average temperature is 18° and average minimum temperature is 16°.
The longest days in Flag Beach are in June, with an average of 14 hours of daylight per day. December has the shortest days with an average of 10.3 hours of daylight per day.
The sunniest days in Flag Beach are in May which has the most hours of sunshine per day with an average of 9.5 hours of sunshine per day, making it a sunny month with few clouds. December has the least sunshine with an average of 7 hours of sunshine per day, making it a quite sunny month with some cloud cover.
The ultraviolet index is the highest in July when it reaches 12.1 and lowest in December when it reaches 4.1.
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 Flag Beach are found in September when they peak at 23° and lowest in March when they dip to 19°.
The sea is best for swimming between June and December when the temperature is above 21° which is comfortable for swimming though some may prefer warmer water.
The wettest month in Flag Beach is December with 3.3cm of rain and January has the most days of rain with 3.8 days with some rain, a very dry time to visit the beach.
The driest month in Flag Beach is June with 0.0cm of rain and the least days of rain with 0.1 days with some rain, an extremely dry time to visit the beach.
The most humid month in Flag Beach is August with a dew point (an indicator of humidity) of 20° which is somewhat uncomfortable for most people in cities but fine on a beach.
The least humid month in Flag Beach is January with a dew point of 14° which is comfortable for everyone.
The most windy month in Flag Beach is July when the average maximum windspeed is 34kmh and the average wind speed is 24kmh.
The least windy month in Flag Beach is October when the average maximum windspeed is 26kmh and the average wind speed is 16kmh.