September weather forecastHaveluliku, Tonga
September
Weather in September
A subtle shift is observed in the weather of Haveluliku, Tonga as September approaches. The sea temperature remains unvarying from August, at 23.8°C (74.8°F). However, rainfall sees a noteworthy increase from the previous month. Despite the increased likelihood of rain, the number of daylight hours starts to rebound. Wind conditions stay relatively calm, offering excellent sailing conditions. September, therefore, displays an increase in rainfall balanced by abundant daylight, maintaining an appealing tropical environment.Temperature
With average temperatures fluctuating between a high of 22.9°C (73.2°F) and a low of 21.7°C (71.1°F), September stands out as the coldest month.Humidity
In September, the average relative humidity in Haveluliku is 77%.Rainfall
In Haveluliku, in September, it is raining for 14 days, with typically 64mm (2.52") of accumulated precipitation. In Haveluliku, during the entire year, the rain falls for 193.9 days and collects up to 991mm (39.02") of precipitation.Sea temperature
August and September, with an average sea temperature of 23.8°C (74.8°F), are months with the coldest seawater.Note: Imagine a swim in 23.8°C (74.8°F) waters. How you'd feel depends on your cold sensitivity, the sun's rays, the caress of the wind, and the warmth enveloping you. Comparatively, Olympic swimmers train in waters between 25°C (77°F) and 28°C (82.4°F).
Daylight
In September, the average length of the day 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
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 in Haveluliku. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: During September, 6 as the daily maximum UV index converts into the following advice:
Deter overexposure. Protecting against the sun's effects is essential. 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. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be attentive! The UV exposure is heightened with reflections from sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Haveluliku, 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
Haveluliku, 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
Haveluliku, 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
Haveluliku, 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
Haveluliku, 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
Haveluliku, 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 sea temperature in September
Haveluliku, Tonga
- Average sea temperature in September: 23.8°C
The best month for swimming (with the highest average sea temperature) is March (28.1°C).
The coldest months (with the lowest average sea temperature) are August and September (23.8°C).
Average daylight in September /
Average sunshine in September
Haveluliku, 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
Haveluliku, 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
Haveluliku, 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
Haveluliku, 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
Haveluliku, 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).
