Alotau Weather in September
Alotau in September sees high temperatures, with highs around 28°C (82°F) and overnight lows of 22°C (72°F). With the rainy season in full effect, expect around 215 mm (8.5 in) of rainfall and regular showers throughout the month.
Rainfall in Alotau in September
As part of the rainy season, Alotau sees around 14 days of rain in September, with an average of 215 mm (8.5 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.
Temperature in Alotau in September
If you're visiting Alotau in September, expect highs of 28°C (82°F) and overnight lows around 22°C (72°F). Overall, the month follows a fairly predictable daily temperature pattern. Nights are mild at around 22°C (72°F), which is comfortable for most people.If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for Alotau.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Papua New Guinea, check out our Alotau's climate page.
Alotau Temperature in September
Min Temperature
22°C (72°F)
Max Temperature
28°C (82°F)
Chance of Rain
45%
Precipitation
215 mm (8.5 in)
Rainy days
14 days
Humidity
82% *
Historical weather for Alotau in September
Browse day-by-day weather records for Alotau spanning 26 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Alotau historical weather extremes in September
The extremes listed below come from historical weather data collected in Alotau from 2004 through 2025.
- The warmest day in September was on September 5, 2022, with a maximum of 32°C (90°F).
- On September 29, 2004, Alotau saw its coldest September day with temperatures maxing out at 21°C (70°F).
- Nighttime temperatures dropped to 19°C (66°F) on September 5, 2019, marking the coldest September night on record.
Best Places in Papua New Guinea in September
Find out more about the weather in Papua New Guinea and which places have the best travel conditions in this month. See all of Papua New Guinea in September →
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What to Wear in Alotau 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. Heavy rain is guaranteed, please bring a good poncho and waterproof everything!What To Do in Alotau 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 Papua New Guinea, check out our Alotau's climate page.
See the full Alotau climate overview or explore weather in Papua New Guinea.
