The hottest month in New Zealand is February when the average maximum temperature is 15°, average temperature is 12° and average minimum temperature is 11°.
The coolest month in New Zealand is July when the average maximum temperature is 9°, average temperature is 7° and average minimum temperature is 5°.
The longest days in New Zealand are in December, with an average of 14.8 hours of daylight per day. June has the shortest days with an average of 9.5 hours of daylight per day.
The sunniest days in New Zealand are in December which has the most hours of sunshine per day with an average of 7.5 hours of sunshine per day, making it a quite sunny month with some cloud cover. May 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 January when it reaches 12.9 and lowest in June when it reaches 1.9.
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 Zealand are found in February when they peak at 19° and lowest in August when they dip to 13°.
The sea is best for swimming between December and May when the temperature is above 16° which is cold for swimming, a full wet suit is required to spend any length of time in the sea.
The wettest month in New Zealand is April with 2.3cm of rain and August has the most days of rain with 11 days with some rain, a slightly wet time to visit the beach.
The driest month in New Zealand is January with 0.4cm of rain and the least days of rain with 5.4 days with some rain, a dry time to visit the beach.
The most humid month in New Zealand is February with a dew point (an indicator of humidity) of 11° which is very comfortable.
The least humid month in New Zealand is July with a dew point of 6° which is a bit dry for some.
The most windy month in New Zealand is October when the average maximum windspeed is 20kmh and the average wind speed is 12kmh.
The least windy month in New Zealand is May when the average maximum windspeed is 15kmh and the average wind speed is 8kmh.
