Neiafu Weather in September
During September, Neiafu experiences high daytime temperatures of 26°C (79°F) and cooler nights around 24°C (75°F). Expect quite a bit of rainfall. Around 104 mm (4.1 in) is typical.
Rainfall in Neiafu in September
The climate data from previous years indicates about 15 days of rain, averaging 104 mm (4.1 in) for the month. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Neiafu in September
Daytime highs in Neiafu in September reach 26°C (79°F), with nights around 24°C (75°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights stay warm at around 24°C (75°F), so light bedding and good ventilation are worth thinking about.
Average water temperature in September
At 24°C (75°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.If you prefer dry days with pleasant temperatures, June, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Tonga, check out our Neiafu's climate page.
Neiafu Temperature in September
Min Temperature
24°C (75°F)
Max Temperature
26°C (79°F)
Water Temperature
24°C (75°F) *
Chance of Rain
51%
Precipitation
104 mm (4.1 in)
Rainy days
15 days
Humidity
71% *
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Neiafu typically stay consistent throughout September, with daily highs averaging around 26°C (79°F). Nights are warm, with lows around 22°C (72°F).
Average temperatures in September
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Neiafu in September
Browse day-by-day weather records for Neiafu spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Neiafu historical weather extremes in September
The extremes listed below come from historical weather data collected in Neiafu from 2003 through 2025.
- On September 30, 2016, temperatures climbed to 30°C (86°F), marking the warmest September day on record.
- On September 7, 2009, Neiafu saw its coldest September day with temperatures maxing out at 22°C (72°F).
- Nighttime temperatures dropped to 12°C (54°F) on September 29, 2009, marking the coldest September night on record.
Best Places in Tonga in September
Find out more about the weather in Tonga and which places have the best travel conditions in this month. See all of Tonga in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Neiafu in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. The water temperature sits at about 24°C (75°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear.What To Do in Neiafu in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Tonga, check out our Neiafu's climate page.
Temperature Rainfall Humidity Water Temp
See the full Neiafu climate overview or explore weather in Tonga.
