September weather forecast
Houailou, New Caledonia

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Weather in September

September signifies the transition from winter to milder, spring weather in Houailou. The number of sunshine hours gradually increase resulting in slightly warmer days. Interestingly, this is coupled with a straightforward drop in cloud cover, contributing to clearer skies. The rise in sea temperatures to 23.8°C (74.8°F), together with a decrease in rainfall to 21mm (0.83"), marks a shift from the cold and dry months. Although the humidity is quite manageable, sun protection is still a necessary precaution due to the unchanged UV index of 6.

Temperature

The advent of September in Houailou presents an average high-temperature of a still agreeable 22.6°C (72.7°F), maintaining a close correlation with the preceding month. September in Houailou witnesses a minor deviation from daytime peaks, with an average nighttime temperature of 18.6°C (65.5°F).

Humidity

With an average relative humidity of 74%, September is the least humid month in Houailou.

Rainfall

The month with the least rainfall is September, when the rain falls for 8.9 days and typically collects 21mm (0.83") of precipitation.

Sea temperature

In Houailou, the average seawater temperature in September is 23.8°C (74.8°F).
Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 23.8°C (74.8°F) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 25°C (77°F) to 28°C (82.4°F).)

Daylight

The average length of the day in September is 11h and 58min.
On the first day of September, sunrise is at 06:06 and sunset at 17:48. On the last day of the month, sunrise is at 05:39 and sunset at 17:55 +11.

Sunshine

In Houailou, the average sunshine in September is 8h.

UV index

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.
Note: In September, a daily UV index of 6 turns into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Stay aware! UV radiation is magnified when reflecting off sand and water.
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Frequently asked questions

What are September temperatures in Houailou?

The high-temperature, in September, in Houailou, is 22.6°C (72.7°F), while the low-temperature averages to 18.6°C (65.5°F). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in March is estimated at 30°C (86°F).

What is the least humid month in Houailou?

The least humid month in Houailou, New Caledonia, is September, with an average relative humidity of 74%.

What is the average humidity in September in Houailou?

In Houailou, the average relative humidity in September is 74%.

What is the driest month in Houailou?

September is the month with the least rainfall in Houailou, New Caledonia. Rain falls for 8.9 days and accumulates 21mm (0.83") of precipitation.

How many days does it rain in September in Houailou?

In Houailou, New Caledonia, in September, during 8.9 rainfall days, 21mm (0.83") of precipitation is typically accumulated.

How warm is the water in September in Houailou?

In Houailou, the average seawater temperature in September is 23.8°C (74.8°F). For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 23.8°C (74.8°F).

What is the average length of the day in September in Houailou?

In Houailou, New Caledonia, the average day length in September is 11h and 58min.

When is the sunrise / sunset in September in Houailou?

In September, on the first day of the month, sunrise is at 06:06 and sunset at 17:48. On the last day of the month, in Houailou, New Caledonia, sunrise is at 05:39 and sunset at 17:55 +11.

How many hours of sunshine does Houailou have in September?

In September, the average sunshine duration in Houailou, New Caledonia, is 8h.

What is the UV index reading in September in Houailou?

In Houailou, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.

Average temperature in September
Houailou, New Caledonia

Average temperature in September - Houailou, New Caledonia
  • Average high temperature in September: 22.6°C

The warmest month (with the highest average high temperature) is February (27.5°C).
The months with the lowest average high temperature are July and August (21.9°C).

  • Average low temperature in September: 18.6°C

The month with the highest average low temperature is February (24.3°C).
The coldest month (with the lowest average low temperature) is August (18.2°C).

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Average pressure in September
Houailou, New Caledonia

Average pressure in September - Houailou, New Caledonia
  • Average pressure in September: 1016.6mbar

The months with the highest atmospheric pressure are July and August (1016.7mbar).
The month with the lowest atmospheric pressure is February (1008mbar).

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Average wind speed in September
Houailou, New Caledonia

Average wind speed in September - Houailou, New Caledonia
  • Average wind speed in September: 13.6km/h

The windiest months (with the highest average wind speed) are March, April and November (15.9km/h).
The calmest month (with the lowest average wind speed) is August (13.1km/h).

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Average humidity in September
Houailou, New Caledonia

Average humidity in September - Houailou, New Caledonia
  • Average humidity in September: 74%

The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is September (74%).

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Average rainfall in September
Houailou, New Caledonia

Average rainfall in September - Houailou, New Caledonia
  • Average rainfall in September: 21mm

The wettest month (with the highest rainfall) is March (132mm).
The driest month (with the least rainfall) is September (21mm).

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Average rainfall days in September
Houailou, New Caledonia

Average rainfall days in September - Houailou, New Caledonia
  • Average rainfall days in September: 8.9 days

The month with the highest number of rainy days is March (23.5 days).
The month with the least rainy days is September (8.9 days).

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Average sea temperature in September
Houailou, New Caledonia

Average sea temperature in September - Houailou, New Caledonia
  • Average sea temperature in September: 23.8°C

The best month for swimming (with the highest average sea temperature) is February (28.4°C).
The coldest month (with the lowest average sea temperature) is August (23.3°C).

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

Average daylight in September / Average sunshine in September - Houailou, New Caledonia
  • Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).

  • Average sunshine in September: 8h and 0min

The month with the most sunshine is November (Average sunshine: 9h and 54min).
The months with the least sunshine are April, July and August (Average sunshine: 5h and 54min).

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Average sunshine days in September
Houailou, New Caledonia

Average sunshine days in September - Houailou, New Caledonia
  • Average sunshine days in September: 17 days

The month with the most sunshine days is September (17 days).
The month with the least sunshine days is March (3.3 days).

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Average UV index in September
Houailou, New Caledonia

Average UV index in September - Houailou, New Caledonia
  • Average UV index in September: 6

The month with the highest UV index is February (UV index 7).
The months with the lowest UV index are June, July and August (UV index 5).

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Average cloud cover in September
Houailou, New Caledonia

Average cloud cover in September - Houailou, New Caledonia
  • Average cloud cover in September: 31

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is September (Cloud cover 31).

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Average visibility in September
Houailou, New Caledonia

Average visibility in September - Houailou, 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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Houailou, New Caledonia

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