September · Tonga
Best time to visit Nuku'alofa in September Weather, crowds & prices
Weather in Nuku'alofa in September
Average temperature 23°C, 78 mm of rain, about 27 days with 6+ hours of sunshine and 73% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.1/10
Ranked #1 of 12 months
- Avg temp
- 23°C
- Rainfall
- 78 mm
- Humidity
- 73%
- Days with 6h+ sun
- 27
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
September in Nuku'alofa scores 8.1/10 for sightseeing and cultural travel - the single best month of the year. Expect around 23°C, 78 mm of rain, and roughly 27 days with 6+ hours of sunshine this month.
Nuku'alofa is Tonga's waterfront capital, with markets, royal and church landmarks, local food, and road access to Tongatapu's blowholes and archaeological sites.
September in Nuku'alofa — the year's strongest window
At 23°C (73°F) this is comfortable city weather in September, with sightseeing easiest before lunch and after the afternoon peak.
Budget for roughly 78 mm of rain this month — a flexible day or two helps — with about 27 days with 6+ hours of sunshine and 12 hours of daylight to work around it.
On our climate-comfort scale this is the top-ranked month of the year for Nuku'alofa at 8.1/10 — the reference point every other month on this page is measured against.
Pack light clothing, a hat and real sun protection, a packable rain layer.
Expect peak pricing, and crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Nuku'alofa in September?
- In September, Nuku'alofa averages 23°C, 78 mm of rain, and about 27 days with 6+ hours of sunshine. Its climate-comfort score is 8.1/10.
- Is September a good time to visit Nuku'alofa?
- September earns a 8.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Nuku'alofa in September?
- Expect about 78 mm of rain in September. Average humidity is 73% and there are about 27 days with 6+ hours of sunshine.
Curated in Nuku'alofa
Tickets & experiences
Things to do in Nuku'alofa
Nuku'alofa, Tonga. Live activities and tours from GetYourGuide, matched to this destination.