September weather forecastHolonga, Tonga
September
Weather in September
September brings, albeit subtly, a revival of the warm conditions in Holonga. There is a minute yet essential shift in average high temperatures, signifying a transition towards higher temperatures. The decrease in wind speed from 26.6km/h (16.5mph) to 25.7km/h (16mph) brings back the lazy and tranquil tropical feel. Be prepared to bask in extended sunshine hours complemented by short showers of rain. The overall weather pattern remains substantially moderate in September, making it an easy-going month.Temperature
September stands out as Holonga's coldest month, with an average high-temperature of 24.7°C (76.5°F) and a low-temperature of 23.9°C (75°F).Humidity
September through November, with an average relative humidity of 79%, are the most humid months.Rainfall
In September, the rain falls for 15 days. Throughout September, 44mm (1.73") of precipitation is accumulated. In Holonga, during the entire year, the rain falls for 227.2 days and collects up to 1333mm (52.48") of precipitation.Daylight
In Holonga, the average length of the day in September is 12h and 1min.On the first day of the month, sunrise is at 06:42 and sunset at 18:28. On the last day of September, in Holonga, sunrise is at 06:17 and sunset at 18:33 +13.
Sunshine
The month with the least sunshine is September, with an average of 6.6h of sunshine.UV index
May through November, 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 threat to health from exposure to the Sun's UV rays for the average person.Note: During September, 6 as the daily maximum UV index converts into the following advice:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Holonga, Tonga
- Average high temperature in September: 24.7°C
The warmest month (with the highest average high temperature) is February (28.3°C).
The month with the lowest average high temperature is September (24.7°C).
- Average low temperature in September: 23.9°C
The month with the highest average low temperature is February (27.3°C).
The coldest month (with the lowest average low temperature) is July (23.7°C).
Average pressure in September
Holonga, Tonga
- Average pressure in September: 1014.8mbar
The months with the highest atmospheric pressure are August and September (1014.8mbar).
The month with the lowest atmospheric pressure is January (1007.8mbar).
Average wind speed in September
Holonga, Tonga
- Average wind speed in September: 25.7km/h
The windiest month (with the highest average wind speed) is June (27km/h).
The calmest month (with the lowest average wind speed) is March (20.2km/h).
Average humidity in September
Holonga, Tonga
- Average humidity in September: 79%
The months with the highest relative humidity are September, October and November (79%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Holonga, Tonga
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is January (275mm).
The driest month (with the least rainfall) is August (42mm).
Average rainfall days in September
Holonga, Tonga
- Average rainfall days in September: 15 days
The months with the highest number of rainy days are February and March (24.3 days).
The month with the least rainy days is August (14.6 days).
Average daylight in September /
Average sunshine in September
Holonga, Tonga
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 12min).
The month with the shortest days is June (Average daylight: 11h and 0min).
- Average sunshine in September: 6h and 36min
The month with the most sunshine is December (Average sunshine: 8h and 12min).
The month with the least sunshine is September (Average sunshine: 6h and 36min).
Average sunshine days in September
Holonga, Tonga
- Average sunshine days in September: 10.3 days
The month with the most sunshine days is August (11.8 days).
The month with the least sunshine days is February (2.3 days).
Average UV index in September
Holonga, Tonga
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April and December (UV index 7).
The months with the lowest UV index are May, June, July, August, September, October and November (UV index 6).
Average cloud cover in September
Holonga, Tonga
- Average cloud cover in September: 53
The month with the most cloud cover is October (Cloud cover 55).
The month with the least cloud cover is March (Cloud cover 46).
Average visibility in September
Holonga, Tonga
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
