The hottest month in Nam Du Islands is May when the average maximum temperature is 33°, average temperature is 29° and average minimum temperature is 26°.
The coolest month in Nam Du Islands is January when the average maximum temperature is 29°, average temperature is 25° and average minimum temperature is 22°.
The longest days in Nam Du Islands are in June, with an average of 12.7 hours of daylight per day. January has the shortest days with an average of 11.6 hours of daylight per day.
The sunniest days in Nam Du Islands are in July which has the most hours of sunshine per day with an average of 6.7 hours of sunshine per day, making it a quite sunny month with some cloud cover. January has the least sunshine with an average of 4.2 hours of sunshine per day, making it a sunny month that is overcast at times.
The ultraviolet index is the highest in March when it reaches 14.9 and lowest in December when it reaches 10.7.
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 Nam Du Islands are found in May when they peak at 31° and lowest in December when they dip to 26°.
The sea is best for swimming between December and October when the temperature is above 29° which is very warm and ideal for relaxing and swimming for the whole day.
The wettest month in Nam Du Islands is September with 37.7cm of rain and July has the most days of rain with 27 days with some rain, a very wet time to visit the beach.
The driest month in Nam Du Islands is January with 0cm of rain and the least days of rain with 1 days with some rain, an extremely dry time to visit the beach.
The most humid month in Nam Du Islands is May 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 Nam Du Islands is January with a dew point of 21° which is somewhat uncomfortable for most people in cities but fine on a beach.
The most windy month in Nam Du Islands is July when the average maximum windspeed is 31kmh and the average wind speed is 16kmh.
The least windy month in Nam Du Islands is April when the average maximum windspeed is 19kmh and the average wind speed is 8kmh.