Warm
Average highs sit around 30°C, giving warm days by monthly-average standards.
December verdict
Manus, Papua New Guinea in December
Weather score50Mixed
Mixed for holiday weather
Average highs sit around 30°C, giving warm days by monthly-average standards. Sunshine averages 4.6h per day, so this is not one of the brighter months. Rainfall averages 280mm, so showers are a real planning factor.
December weather
Monthly averages
Temp
30°C
Rain
280mm
Sun
4.6h
Sea
30°C
Weather score
50
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 280mm, so showers are a real planning factor.
Limited sun
Sunshine averages 4.6h per day, so this is not one of the brighter months.
Warm sea
Sea temperatures average 30°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Manus, Papua New Guinea with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December30°C average high
December is one of Manus' warmest months, with daytime heat above the yearly average.
Warmest monthsJanuary to April and June to December
This stretch sets the upper range for average daytime heat.
Rain
December280mm average rain
December sits on the drier side of Manus' year, which helps with sightseeing and transfers.
Driest monthsJanuary to February, May, and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December4.6 hours average sun
December is one of Manus' cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJanuary, April, and August to September
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December30°C average sea
December is part of a consistently warm sea-temperature pattern, so swimming comfort changes little through the year.
Warmest seaAll year
Sea temperatures stay warm enough for easy swimming through the year.
Weather score
December50 weather score
December is close to Manus' usual weather score, with limited month-to-month change.
Best weather monthsAll year
The weather score stays consistently strong through the year.