Samoa in September has warm conditions, with highs averaging 27°C (81°F). Rain falls on about 22 days this month, totalling around 140 mm.
This month falls at the beginning of Spring.
Temperature
27°C / 25°C
Samoa Weather in September 2026
Monthly climate averages for Apia. Based on 10-year ERA5 reanalysis data.
Af Tropical Rainforest
Climate Overview
Monthly September Averages
Feels Like
31°C / 27°C
Rain
22 days · 140 mm
Sunshine
11.1h / day
Humidity
82% — Very Humid
Wind
25 km/h
Wind Direction
ESE (102°)
Gusts
36 km/h
Daylight
12 h
Cloud Cover
46%
Clear Sky Days
1.5
Dew Point
23°C — Muggy
Moon Phase
Waxing Crescent · 11%
Seasonal Demand
Moderate (3/5)
Sun Position
Sunrise 06:23
Daylight 12h
Sunset 18:24
What to Expect
Daytime temperatures around 27°C (81°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.
Rain most often builds later in the day, so mornings are typically the driest window and afternoon showers are more likely.
Weather conditions this month are among the best of the year, making it a popular time for outdoor activities.
Pros
- Comfortable temperatures for sightseeing
- Abundant sunshine for exploring and outdoor fun
Cons
- Frequent rain may disrupt outdoor activities
- Popular month due to favourable weather conditions
What to Wear
Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces. A waterproof jacket and shoes are non-negotiable — showers are frequent.
Packing List
UmbrellaWaterproof jacketWaterproof shoesBreathable clothingSunscreen (SPF 30+)Sun hatSunglasses
Compare Months
January
Wet 
February
Wet March
Wet April
Wet May
Wet June
Wet July best
Wet August best
Wet September best
Wet October
Wet November
Wet December
Wet | Month | Temp | Feels Like | Rain | Sun | Humidity | Status | Details |
|---|---|---|---|---|---|---|---|
| January | 28°C / 26°C | 33°C / 30°C | 29days (404 mm) Wet | 9.7h Good | 84% Humid | Wet | View Details |
| February | 28°C / 26°C | 33°C / 29°C | 27days (459 mm) Wet | 8.5h Good | 85% Humid | Wet | View Details |
| March | 28°C / 26°C | 34°C / 30°C | 25days (188 mm) Wet | 10.6h Excellent | 83% Humid | Wet | View Details |
| April | 28°C / 26°C | 33°C / 30°C | 26days (201 mm) Wet | 10.2h Excellent | 83% Humid | Wet | View Details |
| May | 28°C / 26°C | 32°C / 30°C | 25days (221 mm) Wet | 9.9h Good | 83% Humid | Wet | View Details |
| June | 27°C / 26°C | 31°C / 28°C | 23days (161 mm) Wet | 10.4h Excellent | 82% Humid | Wet | View Details |
| July best | 27°C / 25°C | 30°C / 28°C | 24days (187 mm) Wet | 10.3h Excellent | 82% Humid | Wet | View Details |
| August best | 27°C / 25°C | 30°C / 27°C | 22days (116 mm) Wet | 10.4h Excellent | 81% Humid | Wet | View Details |
| September best | 27°C / 25°C | 31°C / 27°C | 22days (140 mm) Wet | 11.1h Excellent | 82% Humid | Wet | View Details |
| October | 27°C / 25°C | 31°C / 28°C | 27days (282 mm) Wet | 10.9h Excellent | 83% Humid | Wet | View Details |
| November | 27°C / 25°C | 32°C / 29°C | 26days (292 mm) Wet | 10.8h Excellent | 84% Humid | Wet | View Details |
| December | 28°C / 26°C | 33°C / 29°C | 28days (287 mm) Wet | 11h Excellent | 83% Humid | Wet | View Details |
Frequently Asked Questions
September is typically wet for visiting Samoa, with average highs of 27°C (81°F) and around 22 rainy days. Samoa in September has warm conditions, with highs averaging 27°C (81°F). Rain falls on about 22 days this month, totall
Samoa typically sees around 22 rainy days in September with 140 mm (5.5 in) of total rainfall. Pack a waterproof jacket.
With highs of 27°C (81°F) and lows of 25°C (77°F) in September, we recommend: Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). Comfortable walking shoes are essential.
Yes, September offers some of the best weather conditions in Samoa with comfortable temperatures and lower chances of rain.
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