An alternative way to discover Sydney
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Apia Weather in September
In Apia, September brings high daytime temperatures around 28°C (82°F), with nights cooling to 25°C (77°F). This month falls within the rainy season, so expect frequent rainfall.
Rainfall in Apia in September
Apia is in the rainy season in September, with rain on around 15 days and an average of 185 mm (7.3 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.
Temperature in Apia in September
If you're visiting Apia in September, expect highs of 28°C (82°F) and overnight lows around 25°C (77°F). This kind of day-to-night contrast is typical for this time of year. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Apia in September
The days are predominantly sunny, with an estimated total of around 209 hours of sunshine. Rain is often only seen in the afternoon or evening, leaving clear skies for most of the day. This results in rainy months that still feel bright and are suitable for travel.For Apia itself, June, July and August generally stand out with 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.
Apia Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
28°C (82°F)
Chance of Rain
51%
Precipitation
185 mm (7.3 in)
Rainy days
15 days
Humidity
75%
Sunshine
209 hours
Percentage Sunshine
Apia Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Apia - and find the best time to visit.
Daily Historical Temperatures
43-year average (1976-2025)
Based on our historical records, temperatures in Apia typically stay consistent throughout September, with daily highs averaging around 28°C (82°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in September
Historical weather records for Apia in September
Browse day-by-day weather records for Apia spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Apia historical weather extremes in September
Our historical data for Apia spans 2016 to 2025, revealing these weather extremes.
- On September 7, 2022, temperatures climbed to 35°C (95°F), marking the warmest September day on record.
- On September 18, 2025, Apia saw its coldest September day with temperatures maxing out at 27°C (81°F).
- Nighttime temperatures dropped to 17°C (63°F) on September 9, 2019, marking the coldest September night on record.
- The wettest September day on record brought 45 mm (1.8 in) of precipitation to Apia (September 27, 2024).
Best Places in Samoa in September
Find out more about the weather in Samoa and which places have the best travel conditions in this month. See all of Samoa in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Apia in September
Warm but pleasant conditions in Apia in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
What To Do in Apia in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming8/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Apia 3-Day Forecast
More climate data for Apia
Temperature Rainfall Sunshine Humidity
See the full Apia climate overview or explore weather in Samoa.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bucket list
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