Contents
- 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 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
Weather in September
Temperature
September is the coldest month, 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 Vaini, during September, the rain falls for 14 days and regularly aggregates up to 64mm (2.52") of precipitation. Throughout the year, in Vaini, there are 193.9 rainfall days, and 991mm (39.02") of precipitation is accumulated.Daylight
In September, the average length of the day in Vaini is 11h and 59min.On the first day of September, 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 18:39 +13.
Sunshine
In Vaini, Tonga, the average sunshine in September is 7h.UV index
The months with the lowest UV index in Vaini are April through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high daily UV index of 6 during September translates into the following directions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
What are the coldest months in Vaini?
What are September temperatures in Vaini?
What is the average humidity in September in Vaini?
How much does it rain in Vaini in September?
What is the average length of the day in September in Vaini?
When are sunrise and sunset in September in Vaini?
How long on average sun shines in September in Vaini?
What are the months with the lowest UV index in Vaini?
What is the UV index reading in September in Vaini?
Average temperature in September
Vaini, 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
Vaini, 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
Vaini, 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
Vaini, 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
Vaini, 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
Vaini, 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
Vaini, 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
Vaini, 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
Vaini, 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
Vaini, 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
Vaini, 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).
Vaini, Tonga
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