The best times to visit Juneau for ideal weather are

June 25th to September 2nd

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

 

 


Other Juneau Travel Info

Weather in Juneau

Temperature

Average temperatures in Juneau vary greatly. Considering humidity, temperatures feel cold for most of the year with a chance of rain or snow throughout most of the year. The area is far less temperate than some — in the 10th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Juneau, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally early August where highs are regularly around 67.9°F (19.9°C) with temperatures rarely dropping below 49.8°F (9.9°C) at night.

Juneau Temperatures (Fahrenheit)

Key
High
Average
Low

Juneau Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Juneau Perceived Temperature (F)

Key
High
Average
Low

Juneau Perceived Temperature (C)

Key
High
Average
Low

 

Average Juneau Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 35.4 30.3 25.1
Feb 36 29.8 23.5
Mar 39.2 32.3 25.2
Apr 48.8 39.8 31.3
May 59.4 49.2 39.1
Jun 63.8 54.3 45.8
Jul 64.9 56.2 49.2
Aug 63.9 55.7 48.9
Sep 57.2 50.1 44
Oct 48.5 42.7 37.2
Nov 39 33.8 28.4
Dec 33.8 28.2 22.2

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 1.9 -0.9 -3.8
Feb 2.2 -1.2 -4.7
Mar 4 0.2 -3.8
Apr 9.3 4.3 -0.4
May 15.2 9.6 3.9
Jun 17.7 12.4 7.7
Jul 18.3 13.4 9.6
Aug 17.7 13.2 9.4
Sep 14 10.1 6.7
Oct 9.2 5.9 2.9
Nov 3.9 1 -2
Dec 1 -2.1 -5.4

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Juneau are May, June, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late May. For example, on the week of May 21st there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in mid October with an average of 5 days of significant precipitation the week of October 15th.

When can you find snow in Juneau? Weather stations report large amounts of snow likely to be deepest around March, especially close to early to mid March. The best time to ski (if at all) in Juneau is often around around December 3rd when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Juneau.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Juneau (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 52% 5.5 8
Feb 38% 5.3 3.8
Mar 35% 6.6 3.7
Apr 38% 3 3.7
May 26% 0 3
Jun 29% 0 4
Jul 40% 0 6
Aug 46% 0 6.5
Sep 58% 0 9.3
Oct 54% 1.5 8.5
Nov 49% 4.6 6.5
Dec 40% 4 4.7

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 52 14 20.3
Feb 38 13.5 9.7
Mar 35 16.8 9.4
Apr 38 7.6 9.4
May 26 0 7.6
Jun 29 0 10.2
Jul 40 0 15.2
Aug 46 0 16.5
Sep 58 0 23.6
Oct 54 3.8 21.6
Nov 49 11.7 16.5
Dec 40 10.2 11.9

 

Humidity and Wind

Juneau has some extremely humid months, and above average humidity throughout the year. The least humid month is May (63.5% relative humidity), and the most humid month is September (83.4%).

Wind in Juneau is usually calm. The windiest month is October, followed by March and January. October’s average wind speed of around 6.8 knots (7.8 MPH or 12.6 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early March where average top sustained speeds reach 16.6 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Juneau.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 6.5 Light breeze 14.1 Significant breeze
Feb 6 Light breeze 13.8 Significant breeze
Mar 6.5 Light breeze 14.8 Significant breeze
Apr 6.3 Light breeze 14.5 Significant breeze
May 5.8 Light breeze 12.8 Significant breeze
Jun 5.4 Light breeze 12 Significant breeze
Jul 5.1 Light breeze 10.9 Significant breeze
Aug 5.2 Light breeze 11.3 Significant breeze
Sep 6.5 Light breeze 13.9 Significant breeze
Oct 6.8 Light breeze 14.9 Significant breeze
Nov 6.2 Light breeze 14.2 Significant breeze
Dec 5.3 Light breeze 12.5 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 79.4%
Feb 76.1%
Mar 68.6%
Apr 67.6%
May 63.5%
Jun 68%
Jul 76.6%
Aug 80.2%
Sep 83.4%
Oct 82.3%
Nov 81.9%
Dec 81.4%

 

Is it Safe to Travel to Juneau?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.


 

The Busiest and Least Crowded Months

The busiest month for tourism in Juneau, AK, US is June, followed by July and May. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Juneau in December. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 48.5 in December means 48.5% of the tourists vs. June.

 

 

Overall Juneau Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 64.5°F (18.1°C) and 35.2°F (1.8°C) with warmer temperatures in the later months. Rain is very common with 8 to 11 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have comfortably cool weather with high temperatures that are brisk. These months see moderate precipitation with 9 to 14 days of precipitation per month. June – August is the busiest season for tourism in Juneau, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 59.7°F (15.4°C) and 35.9°F (2.2°C), which will feel chilly given the humidity and wind. It rains or snows a great amount: 15 to 17 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is far too cold this time of year in Juneau to be enjoyable for warm weather travelers. The average high during this season is between 37.5°F (3.1°C) and 32.1°F (0.1°C). On average, it rains or snows a very great amount: 11 to 16 times per month. These times of year are fairly slow with tourists.

 

Best Times to Travelthe United States › Juneau, AK, US