September · Samoa
Best time to visit Apia in September Weather, crowds & prices
Weather in Apia in September
Average temperature 27°C, 69 mm of rain, about 27 days with 6+ hours of sunshine and 80% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.9/10
Ranked #1 of 12 months
- Avg temp
- 27°C
- Rainfall
- 69 mm
- Humidity
- 80%
- Days with 6h+ sun
- 27
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
September in Apia scores 8.9/10 for beach and coastal travel - the single best month of the year. Expect around 27°C, 69 mm of rain, and roughly 27 days with 6+ hours of sunshine this month.
Apia is Samoa's capital on Upolu's north coast, with a harbour, markets and Robert Louis Stevenson's Vailima estate.
September in Apia tops the year's climate scores
Days in September average 27°C (81°F) and humidity near 80% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
Budget for roughly 69 mm of rain this month — a flexible day or two helps — with about 27 days with 6+ hours of sunshine and 11.9 hours of daylight to work around it.
On our climate-comfort scale this is the top-ranked month of the year for Apia at 8.9/10 — the reference point every other month on this page is measured against.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, 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 Apia in September?
- In September, Apia averages 27°C, 69 mm of rain, and about 27 days with 6+ hours of sunshine. Its climate-comfort score is 8.9/10.
- Is September a good time to visit Apia?
- September earns a 8.9/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Apia in September?
- Expect about 69 mm of rain in September. Average humidity is 80% and there are about 27 days with 6+ hours of sunshine.
Curated in Apia
Tickets & experiences
Things to do in Apia
Apia, Samoa. Live activities and tours from GetYourGuide, matched to this destination.