Warm
Average highs sit around 29°C, giving warm days by monthly-average standards.
September verdict
Alotau, Papua New Guinea in September
Weather score61Good
Good for holiday weather
Average highs sit around 29°C, giving warm days by monthly-average standards. Sunshine averages 6.5h per day, enough for a balanced month. Rainfall averages 238mm, so showers are a real planning factor.
September weather
Monthly averages
Temp
29°C
Rain
238mm
Sun
6.5h
Sea
27°C
Weather score
61
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 238mm, so showers are a real planning factor.
Some sun
Sunshine averages 6.5h per day, enough for a balanced month.
Swimmable
Sea temperatures average 27°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Alotau, Papua New Guinea with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September29°C average high
September is close to Alotau's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJanuary to April and October to December
This stretch sets the upper range for average daytime heat.
Rain
September238mm average rain
September is wetter than Alotau's yearly average, so flexible plans matter more.
Driest monthsNovember to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September6.5 hours average sun
September is brighter than Alotau's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsAugust to December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September27°C average sea
September is one of the cooler sea months locally, though the water still averages warm enough for most swimmers.
Warmest seaJanuary to April and December
Sea temperatures are usually near 30°C in this stretch, so swimming comfort is at its strongest.
Weather score
September61 weather score
September sits close to Alotau's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to December
These months have the strongest weather score in the monthly averages.