Cool
Average highs are around 6°C, so pack for cooler days.
December verdict
Heard Island and McDonald Islands in December
Weather score33Poor
Poor for holiday weather
Average highs are around 6°C, so pack for cooler days. Sunshine averages 0h per day, so this is not one of the brighter months. Rainfall averages 89mm, so some wet days are possible.
December weather
Monthly averages
Temp
6°C
Rain
89mm
Sun
0h
Sea
2°C
Weather score
33
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 89mm, so some wet days are possible.
Limited sun
Sunshine averages 0h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 2°C, so the water can feel cool.
Map
Weather map
Compare Heard Island and McDonald Islands with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December6°C average high
December is on the cooler side of Heard Island and McDonald Islands' year, useful if you prefer less intense daytime heat.
Warmest monthsJanuary to May
This stretch sets the upper range for average daytime heat.
Rain
December89mm average rain
December is one of Heard Island and McDonald Islands' driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJanuary to February and June to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December0 hours average sun
December is close to Heard Island and McDonald Islands' usual sunshine level, with limited seasonal swing across the year.
Brightest monthsAll year
Sunshine stays consistently strong through the year.
Sea temperature
December2°C average sea
December is close to Heard Island and McDonald Islands' yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJanuary to June and December
Sea temperatures are usually near 3°C in this stretch, so swimming comfort is at its strongest.
Weather score
December33 weather score
December is one of Heard Island and McDonald Islands' best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJanuary to February and November to December
These months have the strongest weather score in the monthly averages.