September weather forecast
Afa, Tonga

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Weather in September

September signals a shift from the winter months, with a gentle elevation in temperatures. However, the weather remains moderate, and rainfall levels experience a moderate increase. While the trend of abundant wind gusts continues, the cloud cover hovers in the middle range, bringing balanced weather. A slight increase in average lowest temperature to 21.7°C (71.1°F) marks the beginning of an upward trend after winter. With extended daylight hours and steady sunshine, September is a month of pleasant weather.

Temperature

September, with its average high-temperature of 22.9°C (73.2°F) and an average low-temperature of 21.7°C (71.1°F), holds the record as the coldest month.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Afa, in September, it is raining for 14 days, with typically 64mm (2.52") of accumulated precipitation. In Afa, during the entire year, the rain falls for 193.9 days and collects up to 991mm (39.02") of precipitation.

Daylight

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

Sunshine

The average sunshine in September is 7h.

UV index

The months with the lowest UV index are April through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 6 during September leads to these advisories:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.

Frequently asked questions

What time of the year is the coldest in Afa?

September, known for its average high temperature of 22.9°C (73.2°F) and an average low temperature of 21.7°C (71.1°F), is the coldest month.

What are September temperatures in Afa?

The average high-temperature and low-temperature in Afa, Tonga, during September are 22.9°C (73.2°F) and 21.7°C (71.1°F) respectively. In March, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, is evaluated at 30°C (86°F).

What is the average humidity in September in Afa?

The average relative humidity in September in Afa, Tonga, is 77%.

How many days does it rain in September in Afa?

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

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

The average day length in September in Afa is 11h and 59min.

When is the sunrise / sunset in September in Afa?

In September, on the first day of the month, 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 many hours of sunshine does Afa have in September?

The average sunshine duration in September in Afa, Tonga, is 7h.

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

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

What is the UV index intensity in September in Afa?

The average daily maximum UV index in September in Afa is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.

Average temperature in September
Afa, Tonga

Average temperature in September - Afa, 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).

Average pressure in September
Afa, Tonga

Average pressure in September - Afa, 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).

Average wind speed in September
Afa, Tonga

Average wind speed in September - Afa, 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).

Average humidity in September
Afa, Tonga

Average humidity in September - Afa, 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%).

Average rainfall in September
Afa, Tonga

Average rainfall in September - Afa, 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).

Average rainfall days in September
Afa, Tonga

Average rainfall days in September - Afa, 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).

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

Average daylight in September / Average sunshine in September - Afa, Tonga
  • 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: 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).

Average sunshine days in September
Afa, Tonga

Average sunshine days in September - Afa, 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).

Average UV index in September
Afa, Tonga

Average UV index in September - Afa, 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).

Average cloud cover in September
Afa, Tonga

Average cloud cover in September - Afa, 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).

Average visibility in September
Afa, Tonga

Average visibility in September - Afa, 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).

Afa, Tonga

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