Cool
Average highs are around 12°C, so pack for cooler days.
September verdict
Juneau, Alaska, United States in September
Weather score12Poor
Poor for holiday weather
Average highs are around 12°C, so pack for cooler days. Sunshine averages 3.6h per day, so this is not one of the brighter months. Rainfall averages 210mm, so showers are a real planning factor.
September weather
Monthly averages
Temp
12°C
Rain
210mm
Sun
3.6h
Weather score
12
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 210mm, so showers are a real planning factor.
Limited sun
Sunshine averages 3.6h per day, so this is not one of the brighter months.
Map
Weather map
Compare Juneau, Alaska, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September12°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September210mm average rain
September is wetter than Juneau's yearly average, so flexible plans matter more.
Driest monthsJanuary to July
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September3.6 hours average sun
September sits close to Juneau's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsApril to July
This stretch has the strongest sunshine in the monthly averages.
Weather score
September12 weather score
September scores below Juneau'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.
