September weather - Spring 2023 - Noumea, New Caledonia

Weather in September
Frequently asked questions
Average temperature in September
Average pressure in September
Average wind speed in September
Average humidity in September
Average rainfall in September
Average rainfall days in September
Average sea temperature in September
Average daylight in September
Average sunshine in September
Average sunshine days in September
Average UV index in September
Average cloud cover in September
Average visibility in September

A beautiful shore park in Noumea, New Caledonia

Weather in September

September serves as a transitional month as Noumea begins to emerge from its cooler period. The weather slightly shifts with an average temperature of 21.3°C and minimal rainfall of 29mm, marking a trend towards warmer days. Noumea, during this phase, enjoys extended sunshine hours and reduced cloud cover. September brings along warmer days, segueing into the last period of the year.

Temperature

As Noumea transitions into September, the average high-temperature stands at a still pleasant 21.3°C, offering little variation from the preceding month. A consistent average low of 17.8°C is noted throughout September, only a small step down from its daytime high.

Humidity

In Noumea, New Caledonia, the average relative humidity in September is 78%.

Rainfall

September is the month with the least rainfall. Rain falls for 14.3 days and accumulates 29mm of precipitation.

Sea temperature

August and September, with an average sea temperature of 22.8°C, are months with the coldest seawater in Noumea.
Note: If someone is sensitive to cold, the enjoyment of swimming in 22.8°C water hinges on factors like sunshine, wind, and the current air temperature. (For context: Olympic swimming competitions are held in water temperatures of 25°C to 28°C.)

Daylight

The average length of the day in September is 11h and 58min.
On the first day of the month, sunrise is at 06:04 and sunset at 17:44. On the last day of September, sunrise is at 05:36 and sunset at 17:52 +11.

Sunshine

In September, the average sunshine is 8.1h.

UV index

The months with the lowest UV index are May through September, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A typical high UV index of 5 in September suggests the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Warning! The reflection of sand and water increases the UV dose.

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FAQ

What are the temperatures in Noumea in September?

In Noumea, 21.3°C is the average high-temperature and 17.8°C is the average low-temperature during September.

What is the average humidity in September in Noumea?

In September, the average relative humidity is 78%.

What is the driest month in Noumea?

The month with the least rainfall is September, when the rain falls for 14.3 days and typically collects 29mm of precipitation.

How much does it rain in Noumea in September?

In Noumea, New Caledonia, in September, during 14.3 rainfall days, 29mm of precipitation is typically accumulated.

What months are the sea coldest in Noumea?

The months with the coldest seawater in Noumea are August and September, with an average sea temperature of 22.8°C.

What is the sea temperature in September in Noumea?

In Noumea, New Caledonia, the average seawater temperature in September is 22.8°C. Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 22.8°C water may be enjoyable.

How many hours of daylight does Noumea have in September?

In Noumea, the average day length in September is 11h and 58min.

What time are sunrise and sunset in September in Noumea?

In September, on the first day of the month, sunrise is at 06:04 and sunset at 17:44. On the last day of the month, in Noumea, New Caledonia, sunrise is at 05:36 and sunset at 17:52 +11.

How many hours of sunshine does Noumea have in September?

The average sunshine duration in September is 8.1h.

What is the month with the lowest UV index in Noumea?

May through September, with an average maximum UV index of 5, are months with the lowest UV index in Noumea.

How high is the UV index in September in Noumea?

In September, the average daily maximum UV index in Noumea, New Caledonia, is 5. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

20.7°C

21.3°C

22.6°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

15.5km/h

16.1km/h

18.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

15.4

14.3

17.1

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

8.3

8.1

6.2

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Noumea, New Caledonia

Average high temperature in September: 21.3°C

The warmest month (with the highest average high temperature) is February (26.5°C).
The month with the lowest average high temperature is July (20.6°C).

Average low temperature in September: 17.8°C

The month with the highest average low temperature is February (23.8°C).
The coldest month (with the lowest average low temperature) is August (17.6°C).

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Average pressure in September
Noumea, New Caledonia

Average pressure in September: 1017.1mbar

The months with the highest atmospheric pressure are July, August and September (1017.1mbar).
The month with the lowest atmospheric pressure is February (1008.5mbar).

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Average wind speed in September
Noumea, New Caledonia

Average wind speed in September: 15.5km/h

The windiest month (with the highest average wind speed) is March (18.8km/h).
The calmest month (with the lowest average wind speed) is August (14.6km/h).

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Average humidity in September
Noumea, New Caledonia

Average humidity in September: 78%

The months with the highest relative humidity are February and March (83%).
The months with the lowest relative humidity are July and August (77%).

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Average rainfall in September
Noumea, New Caledonia

Average rainfall in September: 29mm

The wettest month (with the highest rainfall) is March (134mm).
The driest month (with the least rainfall) is September (29mm).

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Average rainfall days in September
Noumea, New Caledonia

Average rainfall days in September: 14.3 days

The month with the highest number of rainy days is March (23.7 days).
The month with the least rainy days is September (14.3 days).

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Average sea temperature in September
Noumea, New Caledonia

Average sea temperature in September: 22.8°C

The best month for swimming (with the highest average sea temperature) is February (27.5°C).
The coldest months (with the lowest average sea temperature) are August and September (22.8°C).

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Average daylight in September /
Average sunshine in September
Noumea, New Caledonia

Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 48min).

Average sunshine in September: 8h and 1min

The month with the most sunshine is November (Average sunshine: 10h and 0min).
The months with the least sunshine are April, May, June and July (Average sunshine: 5h and 42min).

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Average sunshine days in September
Noumea, New Caledonia

Average sunshine days in September: 8.1 days

The month with the most sunshine days is August (8.3 days).
The month with the least sunshine days is April (4.3 days).

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Average UV index in September
Noumea, New Caledonia

Average UV index in September: 5

The months with the highest UV index are January, February, March, April, October, November and December (UV index 6).
The months with the lowest UV index are May, June, July, August and September (UV index 5).

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Average cloud cover in September
Noumea, New Caledonia

Average cloud cover in September: 34

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is September (Cloud cover 34).

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Average visibility in September
Noumea, New Caledonia

Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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September weather forecast
Noumea, New Caledonia

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