September weather forecast
Ouvéa Island, New Caledonia

With the onset of September, Ouvéa Island starts experiencing a gradual rise in temperature, reflecting the onset of the hotter part of the year, and marking highs of 25°C (77°F) and lows of 16°C (60.8°F). Interestingly the month's rainfall levels descend to 63mm (2.48"), the second smallest count of the year. September is a transition period where the cool season blends into the warmer months, without losing the island's tropical appeal. As summer beckons, daylight hours increase, giving way to brighter days. Don't neglect sun protection, as the UV index escalates this month.

Temperature

September's climate shows a minor adjustment in average high-temperatures to a still moderately hot 25°C (77°F) from August's 24°C (75.2°F). The average temperature drops to a comfortable 16°C (60.8°F) during the night in the month of September.

Rainfall

The month with the least rainfall is September, when the rain falls for 11 days and typically collects 63mm (2.48") of precipitation.

Sea temperature

The months with the coldest seawater are July through September, with an average sea temperature of 24°C (75.2°F).
Note: Think about diving into 24°C (75.2°F) waters. Factors like your sensitivity to cold, the brightness of the sun, wind conditions, and the day's warmth play a role. For reference, Olympic swimming competitions use waters between 25°C (77°F) and 28°C (82.4°F).

Daylight

In Ouvéa Island, the average length of the day in September is 11h and 59min.
On the first day of September, sunrise is at 06:02 and sunset at 17:45. On the last day of the month, sunrise is at 05:35 and sunset at 17:51 +11.

Sunshine

In Ouvéa Island, the average sunshine in September is 7h.

UV index

In Ouvéa Island, the average daily maximum UV index in September is 10. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: An average maximum UV index of 10 in September leads to these recommendations:
Never be careless. Unprotected skin and eyes can be harmed swiftly. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Ward off sunburn by liberally using sunscreen with 30 SPF or more. This also diminishes the Sun's damaging radiation effects on your health. Attention! UV radiation is markedly stronger with water and sand reflections.