September weather forecast
Kolonga, Tonga

Weather in September

September, the first month of the spring in Kolonga, is also an agreeable month, with temperature in the range of an average high of 22.9°C (73.2°F) and an average low of 21.7°C (71.1°F).

Temperature

The coldest month is September, with an average high-temperature of 22.9°C (73.2°F) and an average low-temperature of 21.7°C (71.1°F).

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Kolonga, in September, during 14 rainfall days, 64mm (2.52") of precipitation is typically accumulated. Throughout the year, in Kolonga, there are 193.9 rainfall days, and 991mm (39.02") of precipitation is accumulated.

Daylight

In Kolonga, the average length of the day in September is 11h and 59min.
On the first day of September in Kolonga, Tonga, sunrise is at 06:48 and sunset at 18:31. On the last day of the month, sunrise is at 06:21 and sunset at 18:38 +13.

Sunshine

In September, the average sunshine in Kolonga is 7h.

UV index

April through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The average daily UV index of 6 in September transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the coldest month in Kolonga?

The coldest month is September, with an average high-temperature of 22.9°C (73.2°F) and an average low-temperature of 21.7°C (71.1°F).

What is the temperature in September in Kolonga?

In September, in Kolonga, the average high-temperature is 22.9°C (73.2°F), and the average low-temperature is 21.7°C (71.1°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in March is evaluated at 30°C (86°F).

What is the average humidity in September in Kolonga?

In Kolonga, the average relative humidity in September is 77%.

How many days does it rain in September in Kolonga?

In Kolonga, in September, it is raining for 14 days, with typically 64mm (2.52") of accumulated precipitation.

How many hours of daylight does Kolonga have in September?

In Kolonga, Tonga, the average day length in September is 11h and 59min.

What time are sunrise and sunset in September in Kolonga?

On the first day of September in Kolonga, sunrise is at 06:48 and sunset at 18:31. On the last day of the month, sunrise is at 06:21 and sunset at 18:38 +13.

How long on average sun shines in September in Kolonga?

In September, the average sunshine duration is 7h.

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

The months with the lowest UV index are April through December, with an average maximum UV index of 6.

How high is the UV index in September in Kolonga?

In Kolonga, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.

Average temperature in September
Kolonga, Tonga

Average temperature in September - Kolonga, Tonga
  • Average high temperature in September: 22.9°C

The warmest month (with the highest average high temperature) is February (27.5°C).
The month with the lowest average high temperature is September (22.9°C).

  • Average low temperature in September: 21.7°C

The month with the highest average low temperature is February (26.7°C).
The coldest month (with the lowest average low temperature) is August (21.6°C).

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Average pressure in September
Kolonga, Tonga

Average pressure in September - Kolonga, Tonga
  • Average pressure in September: 1016.2mbar

The months with the highest atmospheric pressure are August and September (1016.2mbar).
The months with the lowest atmospheric pressure are January and February (1008.6mbar).

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Average wind speed in September
Kolonga, Tonga

Average wind speed in September - Kolonga, Tonga
  • Average wind speed in September: 23.7km/h

The windiest month (with the highest average wind speed) is July (25.6km/h).
The calmest month (with the lowest average wind speed) is January (23.3km/h).

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Average humidity in September
Kolonga, Tonga

Average humidity in September - Kolonga, Tonga
  • Average humidity in September: 77%

The month with the highest relative humidity is January (80%).
The months with the lowest relative humidity are July and August (75%).

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Average rainfall in September
Kolonga, Tonga

Average rainfall in September - Kolonga, Tonga
  • Average rainfall in September: 64mm

The wettest month (with the highest rainfall) is February (163mm).
The driest month (with the least rainfall) is October (36mm).

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Average rainfall days in September
Kolonga, Tonga

Average rainfall days in September - Kolonga, Tonga
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is February (22.7 days).
The month with the least rainy days is October (12.9 days).

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Average daylight in September /
Average sunshine in September
Kolonga, Tonga

Average daylight in September / Average sunshine in September - Kolonga, Tonga
  • Average daylight in September: 11h and 59min

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 52min).

  • Average sunshine in September: 7h and 0min

The month with the most sunshine is November (Average sunshine: 8h and 54min).
The month with the least sunshine is August (Average sunshine: 6h and 48min).

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Average sunshine days in September
Kolonga, Tonga

Average sunshine days in September - Kolonga, Tonga
  • Average sunshine days in September: 10.8 days

The month with the most sunshine days is May (15.1 days).
The month with the least sunshine days is February (3.8 days).

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Average UV index in September
Kolonga, Tonga

Average UV index in September - Kolonga, Tonga
  • Average UV index in September: 6

The months with the highest UV index are January, February and March (UV index 7).
The months with the lowest UV index are April, May, June, July, August, September, October, November and December (UV index 6).

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Average cloud cover in September
Kolonga, Tonga

Average cloud cover in September - Kolonga, Tonga
  • Average cloud cover in September: 50

The month with the most cloud cover is August (Cloud cover 51).
The month with the least cloud cover is May (Cloud cover 46).

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Average visibility in September
Kolonga, Tonga

Average visibility in September - Kolonga, Tonga
  • 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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