SeasonMapSavai'i (Savaii) weather in September
Samoa
September in Savai'i: nice, rainy, with clean air — fine if you can take 23 rainy days.
#1 of 12 months in Savai'i · #395 of 1383 destinations to visit in September · comfort 87/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Savai'i in September
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Savai'i climate normals — September
| Daytime high | 22°C / 72°F | 😎 nice |
|---|---|---|
| Nighttime low | 18°C / 65°F | |
| Sea temperature | 29°C / 83°F | ♨️ bath-warm |
| Rainfall | 104 mm / 4.1 in | 🌧 rainy |
| Rainy days | 23 days | |
| Humidity | 86% | 💦 very humid |
| Dew point | 17°C / 62°F | |
| Sunshine | 10.8 h/day | |
| Daylight | 12 h | |
| Wind | 20 km/h / 13 mph | |
| Air quality (US AQI) | 27 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Savai'i in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Busyschool holidays in 3 of the markets that fill it, one of its best months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Savai'i's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherSavai'i's best weather comes in June, August and September — separate windows, not one continuous season.
Best weatherFair weatherToughest weather
Where is Savai'i?
Savai'i in September — FAQ
- Is September a good time to visit Savai'i?
- September in Savai'i: nice, rainy, with clean air — fine if you can take 23 rainy days. It ranks #1 of 12 months for Savai'i on SeasonMap's comfort score (87/100).
- What is the weather like in Savai'i in September?
- In September, Savai'i averages a daily high of 22.1°C and a low of 18.1°C, with about 103.7 mm of rain over roughly 23.4 rainy days.
- What is the air quality in Savai'i in September?
- Savai'i has a mean US Air Quality Index of about 27 in September.