Tonga
Tonga in September
Where it is warm, dry and good for swimming in Tonga in September — compared across the country’s main destinations.
Quick answers
- Where is it warmest in Tonga in September?
- Neiafu is the warmest of the 16 destinations compared, with highs of 27°C (80°F) in September; Fua'amotu is the coolest at 25°C (77°F).
- Can you swim in the sea in Tonga in September?
- Yes, in places: the warmest water is at Neiafu (25°C (78°F)), and 16 of the coastal destinations have a sea of 21 °C or more.
Warmest
27°
Neiafu
Coolest
25°
Fua'amotu
Driest
115 mm
Vainī
Warmest sea
25°
Neiafu
Neiafu is the warm end of Tonga in September (27°C (80°F)); Fua'amotu the cool end (25°C (77°F)). On average it is about as warm as August. Rain is frequent in most destinations. Best bets this month: Nuku'alofa.
Best places in Tonga in September
Weather in September by city
| Place | Day | Night | Rain | Sea | Score |
|---|---|---|---|---|---|
| Vainī | 25° | 19° | 115 mm | 24° | 83 |
| Nuku'alofa | 25° | 19° | 117 mm | 24° | 82 |
| Mu‘a | 25° | 19° | 119 mm | 24° | 82 |
| Haveluloto | 25° | 19° | 116 mm | 24° | 82 |
| Tofoa-Koloua | 25° | 19° | 115 mm | 24° | 82 |
| Ha'ateiho | 25° | 19° | 119 mm | 24° | 82 |
| Popua | 25° | 19° | 116 mm | 24° | 82 |
| Nukunuku | 25° | 19° | 119 mm | 24° | 82 |
| Pea | 26° | 19° | 116 mm | 24° | 82 |
| Lapaha | 25° | 19° | 119 mm | 24° | 82 |
| Houma | 25° | 19° | 117 mm | 24° | 82 |
| Tatakamotonga | 25° | 19° | 119 mm | 24° | 82 |
| Fua'amotu | 25° | 18° | 119 mm | 24° | 82 |
| Fangale’ounga | 26° | 20° | 135 mm | 25° | 79 |
| Neiafu | 27° | 21° | 135 mm | 25° | 78 |
| Pangai | 26° | 20° | 137 mm | 25° | 78 |
Frequently asked questions
What is the weather like in Tonga in September?
Average daytime highs range from 25° in Fua'amotu to 27° in Neiafu.
Can you swim in Tonga in September?
Yes — the sea is warmest around Neiafu at about 25°.