The hottest month in New South Wales is January when the average maximum temperature is 26°, average temperature is 21° and average minimum temperature is 17°.
The coolest month in New South Wales is July when the average maximum temperature is 17°, average temperature is 12° and average minimum temperature is 8°.
The longest days in New South Wales are in December, with an average of 14.2 hours of daylight per day. June has the shortest days with an average of 10.1 hours of daylight per day.
The sunniest days in New South Wales are in January which has the most hours of sunshine per day with an average of 8.9 hours of sunshine per day, making it a sunny month with few clouds. June has the least sunshine with an average of 5.5 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 14.2 and lowest in June when it reaches 3.4.
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 New South Wales are found in February when they peak at 22° and lowest in September when they dip to 17°.
The sea is best for swimming between December and May when the temperature is above 20° which is comfortable for swimming though some may prefer warmer water.
The wettest month in New South Wales is February with 27.3cm of rain and June has the most days of rain with 11.3 days with some rain, a slightly wet time to visit the beach.
The driest month in New South Wales is September with 7.2cm of rain and October has the fewest days of rain with 8.7 days with some rain, a dry time to visit the beach.
The most humid month in New South Wales is February with a dew point (an indicator of humidity) of 18° which is OK for most but slightly uncomfortable for some.
The least humid month in New South Wales is July with a dew point of 10° which is a bit dry for some.
The most windy month in New South Wales is October when the average maximum windspeed is 29kmh and the average wind speed is 16kmh.
The least windy month in New South Wales is May when the average maximum windspeed is 24kmh and the average wind speed is 14kmh.