Cool
Average highs are around 3°C, so pack for cooler days.
December verdict
Adak, United States in December
Weather score20Poor
Poor for holiday weather
Average highs are around 3°C, so pack for cooler days. Sunshine averages 5.8h per day, enough for a balanced month. Rainfall averages 180mm, so some wet days are possible.
December weather
Monthly averages
Temp
3°C
Rain
180mm
Sun
5.8h
Sea
5°C
Weather score
20
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 180mm, so some wet days are possible.
Some sun
Sunshine averages 5.8h per day, enough for a balanced month.
Cool sea
Sea temperatures average 5°C, so the water can feel cool.
Map
Weather map
Compare Adak, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December3°C average high
December has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJuly to September
This stretch sets the upper range for average daytime heat.
Rain
December180mm average rain
December is one of Adak's wettest months, so rain is likely to be a major planning factor.
Driest monthsFebruary and April to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December5.8 hours average sun
December is one of Adak's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsFebruary to June and August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December5°C average sea
December is below Adak's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaAugust to September
Sea temperatures are usually near 9°C in this stretch, so swimming comfort is at its strongest.
Weather score
December20 weather score
December scores below Adak's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJanuary to September
These months have the strongest weather score in the monthly averages.