Cool
Average highs are around 6°C, so pack for cooler days.
May verdict
Heard Island and McDonald Islands in May
Weather score18Poor
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 123mm, so some wet days are possible.
May weather
Monthly averages
Temp
6°C
Rain
123mm
Sun
0h
Sea
3°C
Weather score
18
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 123mm, 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 3°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
May6°C average high
May is close to Heard Island and McDonald Islands' yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJanuary to May
This stretch sets the upper range for average daytime heat.
Rain
May123mm average rain
May is wetter than Heard Island and McDonald Islands' yearly average, so flexible plans matter more.
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
May0 hours average sun
May 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
May3°C average sea
May sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
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
May18 weather score
May is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJanuary to February and November to December
These months have the strongest weather score in the monthly averages.