September weather forecastHoi, Tonga
September
Weather in September
As the end of the year approaches, the weather in Hoi, Tonga in September sees subtle changes. There is a slight increase in rainfall, yet it stays significantly lower than at the start of the year. Consistent temperatures and humidity mark the transition from the drier months into the final quarter of the year. Noticeably, daylight hours start to increase again, suggesting a return to longer days.Temperature
September proves to be the coldest month, recording an average maximum temperature of 22.9°C (73.2°F) and a minimum temperature of 21.7°C (71.1°F).Humidity
The average relative humidity in September in Hoi is 77%.Rainfall
In Hoi, in September, during 14 rainfall days, 64mm (2.52") of precipitation is typically accumulated. In Hoi, 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 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 18:38 +13.
Sunshine
In Hoi, the average sunshine in September 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 value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 6 in September translates into these instructions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. 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. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hoi, 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
Hoi, 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
Hoi, 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
Hoi, 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
Hoi, 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
Hoi, 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
Hoi, 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
Hoi, 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
Hoi, 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
Hoi, 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
Hoi, 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).
