Tonga weather in September 2025

The weather in Tonga in September is very hot. The average temperatures are between 24°C and 25°C, drinking water regularly is advisable.

You can expect about 3 to 8 days of rain in Tonga during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Our weather forecast can give you a great sense of what weather to expect in Tonga in September 2025.

If you’re planning to visit Tonga in the near future, we highly recommend that you review the 14 day weather forecast for Tonga before you arrive.

Temperatures

25° / 24°

Rainy Days

Snowy Days

Dry Days

Rainfall

107

Sun Hours

9.6

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
	1 24° /22°	2 24° /23°	3 24° /23°	4 24° /23°	5 24° /23°	6 24° /23°
7 24° /23°	8 24° /23°	9 24° /23°	10 25° /24°	11 24° /24°	12 24° /24°	13 24° /24°
14 24° /24°	15 25° /24°	16 25° /24°	17 25° /24°	18 25° /23°	19 24° /23°	20 24° /23°
21 24° /23°	22 24° /24°	23 25° /24°	24 24° /23°	25 24° /24°	26 24° /23°	27 24° /22°
28 24° /23°	29 24° /24°	30 24° /23°

Explore the weather in Tonga in other months

Tonga annual weather

Month	Temperatures	Rainy Days	Dry Days	Rainfall	Weather	More details
January	28° / 27°	12	19	508 mm	Good	Tonga in January
February	28° / 27°	13	15	499 mm	Good	Tonga in February
March	28° / 27°	11	20	278 mm	Good	Tonga in March
April	27° / 26°	8	22	232 mm	Good	Tonga in April
May	27° / 26°	6	25	218 mm	Perfect	Tonga in May
June	26° / 25°	3	27	101 mm	Perfect	Tonga in June
July	25° / 24°	3	28	85 mm	Perfect	Tonga in July
August	25° / 23°	3	28	102 mm	Perfect	Tonga in August
September	25° / 24°	5	26	107 mm	Perfect	Tonga in September
October	26° / 25°	6	25	153 mm	Perfect	Tonga in October
November	26° / 25°	6	24	176 mm	Perfect	Tonga in November
December	27° / 26°	10	21	282 mm	Good	Tonga in December

Temperatures in Tonga in September

Rain in Tonga in September

Weather in Tonga in September - FAQ

What is the average temperature in Tonga in September?

The average temperature in Tonga in September is 24/25° C.

What is the chance of rain in Tonga in September?

On average, there are 5 rainy days in Tonga during September.

Weather wise, is September a good time to visit Tonga?

The weather in Tonga in September is perfect.

Can it snow in Tonga in September?

On average, there are 0 snowy days in Tonga in September.

Cities in Tonga

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Nukualofa Tongatapu

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