September weather forecast
Tonga

September in Tonga sees the beginning of the transition from the cooler, drier conditions of the mid-year to the warmer, wetter conditions of the late-year. Temperatures during September typically range from 19°C (66.2°F) to 26°C (78.8°F), marking a slight increase from the cooler months of July and August.

Average rainfall in September begins to increase, marking the end of the dry season. Precipitation amounts are typically around 80mm (3.15"), a slight increase from the preceding months, but still relatively low compared to the peak of the wet season.

In comparison to August, September experiences a slight increase in both temperature and rainfall. The risk of cyclones is still low in September, but it begins to increase as the month progresses, with the official start of the cyclone season just a few months away in November. Sea temperatures remain pleasant for water activities, averaging 25°C (77°F).

As September signals the end of the dry season, the weather conditions begin to shift towards those characteristic of the wet season. Visitors during this month can still expect generally favourable conditions, but should be aware of the changing weather patterns as the wet season approaches. As always, it's advisable to monitor local weather forecasts.

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• Nuku'alofa - September »
  The months with the coldest seawater in Nuku'alofa are August and September, with an average sea temperature of 23.8°C (74.8°F). August and September, with an average sea temperature of 23.8°C (74.8°F), are months with the coldest seawater in Nuku'alofa.
• Neiafu - September »
  On the first day of September in Neiafu, sunrise is at 06:43 and sunset at 18:28. As the winter recedes, September in Neiafu sees sea temperatures rise to 25.7°C (78.3°F) from the previous month's low.
• Vaini - September »
  The coldest period in Vaini is September, when temperatures fluctuate between an average high of 22.9°C (73.2°F) and a low of 21.7°C (71.1°F). In Vaini, Tonga, in September, it is raining for 14 days, with typically 64mm (2.52") of accumulated precipitation.
• Pangai - September »
  On the first day of September in Pangai, Tonga, sunrise is at 06:45 and sunset at 18:29. September marks the start of a slight recovery in sea temperatures in Pangai, reaching up to 24.8°C (76.6°F).
• Hihifo - September »
  The month with the least rainfall in Hihifo is September, when the rain falls for 15.2 days and typically collects 41mm (1.61") of precipitation. September is the most humid month in Hihifo with an average relative humidity of 79%.
• Kolonga - September »
  September is the month when Kolonga sees the average lowest temperatures, with a high of 22.9°C (73.2°F) and a low of 21.7°C (71.1°F). September temperatures in Kolonga vary between a high-temperature of 22.9°C (73.2°F) and a low-temperature of 21.7°C (71.1°F).
• Nukunuku - September »
  In Nukunuku in September, during 14 rainfall days, 64mm (2.52") of precipitation is typically accumulated. Nukunuku's coldest month, September, registers temperatures that range from a high of 22.9°C (73.2°F) to a low of 21.7°C (71.1°F).
• Houma - September »
  On the first day of September in Houma sunrise is at 06:50 and sunset at 18:32. The coldest month in Houma is September, with an average high-temperature of 22.9°C (73.2°F) and an average low-temperature of 21.7°C (71.1°F).
• Holonga - September »
  With average temperatures fluctuating between a high of 24.7°C (76.5°F) and a low of 23.9°C (75°F), September stands out as the coldest month in Holonga, Tonga. September through November, with an average relative humidity of 79%, are most humid months in Holonga, Tonga.
• Kanokupolu - September »
  On the first day of September in Kanokupolu sunrise is at 06:50 and sunset at 18:32. In Kanokupolu in September, during 14 rainfall days, 64mm (2.52") of precipitation is typically accumulated.
• Matahau - September »
  Matahau experiences its lowest temperatures in September, with an average peak of 22.9°C (73.2°F) and a low of 21.7°C (71.1°F). Matahau's September weather reaches an average high of 22.9°C (73.2°F) and an average low of 21.7°C (71.1°F), making it the coldest month.