Cool
Average highs are around -4°C, so pack for cooler days.
December verdict
Glacier Bay National Park, United States in December
Weather score11Poor
Poor for holiday weather
Average highs are around -4°C, so pack for cooler days. Sunshine averages 0.9h per day, so this is not one of the brighter months. Rainfall averages 171mm, so some wet days are possible.
December weather
Monthly averages
Temp
-4°C
Rain
171mm
Sun
0.9h
Sea
7°C
Weather score
11
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 171mm, so some wet days are possible.
Limited sun
Sunshine averages 0.9h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 7°C, so the water can feel cool.
Map
Weather map
Compare Glacier Bay National Park, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December-4°C average high
December has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
December171mm average rain
December is wetter than Glacier Bay National Park's yearly average, so flexible plans matter more.
Driest monthsMarch to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December0.9 hours average sun
December is one of Glacier Bay National Park's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsApril to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December7°C average sea
December is below Glacier Bay National Park's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 13°C in this stretch, so swimming comfort is at its strongest.
Weather score
December11 weather score
December scores below Glacier Bay National Park's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsApril to July
These months have the strongest weather score in the monthly averages.
