When to come
The best time to see the northern lights in Juneau
The northern lights are out all year. You need a dark sky to see them, and in Alaska that means late August to mid April. Nobody can forecast a display months ahead, but three things can be known: how long it is dark, where the moon will be, and how cloudy the month usually is. In Juneau's records, January is the clearest month of the season.
Dark-moon weeks coming up
Seven nights around each new moon, when the sky is darkest. A strong display shows through any moon, so treat these as a good default, not a rule. Our picks are the weeks in the months that are usually clearest.
Tue, Oct 6 to Tue, Oct 13, 2026
- New moon on Sat, Oct 10.
- About 10.5 hours of darkness a night.
- October usually has 4 of 31 days clear or partly cloudy.
Thu, Nov 5 to Thu, Nov 12, 2026
- New moon on Sun, Nov 8.
- About 12.5 hours of darkness a night.
- November usually has 6 of 30 days clear or partly cloudy.
Sat, Dec 5 to Sat, Dec 12, 2026
- New moon on Tue, Dec 8.
- About 14 hours of darkness a night.
- December usually has 5 of 30 days clear or partly cloudy.
Sun, Jan 3 to Sun, Jan 10, 2027
Our pick- New moon on Thu, Jan 7.
- About 14 hours of darkness a night.
- January usually has 9 of 32 days clear or partly cloudy.
Tue, Feb 2 to Tue, Feb 9, 2027
- New moon on Sat, Feb 6.
- About 12.5 hours of darkness a night.
- February usually has 7 of 28 days clear or partly cloudy.
Thu, Mar 4 to Thu, Mar 11, 2027
- New moon on Mon, Mar 8.
- About 10 hours of darkness a night.
- March usually has 7 of 30 days clear or partly cloudy.
Sat, Apr 3 to Sat, Apr 10, 2027
Our pick- New moon on Tue, Apr 6.
- About 7 hours of darkness a night.
- April usually has 8 of 30 days clear or partly cloudy.
Sun, May 2 to Sun, May 9, 2027
- New moon on Thu, May 6.
- About 3.5 hours of darkness a night.
- May usually has 8 of 31 days clear or partly cloudy.
Fri, Aug 27 to Fri, Sep 3, 2027
Our pick- New moon on Tue, Aug 31.
- About 6.5 hours of darkness a night.
- August usually has 9 of 31 days clear or partly cloudy.
Sun, Sep 26 to Sun, Oct 3, 2027
- New moon on Wed, Sep 29.
- About 9.5 hours of darkness a night.
- September usually has 6 of 30 days clear or partly cloudy.
Month by month
| Month | Dark hours a night | Usual sky | Good to know |
|---|---|---|---|
| October 2026 | 11 hours | 4 of 31 days clear or partly cloudy | |
| November 2026 | 13 hours | 6 of 30 days clear or partly cloudy | |
| December 2026 | 14 hours | 5 of 30 days clear or partly cloudy | |
| January 2027 | 13.5 hours | 9 of 32 days clear or partly cloudy | |
| February 2027 | 11.5 hours | 7 of 28 days clear or partly cloudy | |
| March 2027 | 9 hours | 7 of 30 days clear or partly cloudy | Displays tend to be stronger around the equinox. |
| April 2027 | 6 hours | 8 of 30 days clear or partly cloudy | |
| May 2027 | 1.5 hours | 8 of 31 days clear or partly cloudy | Too light for the northern lights. |
| June 2027 | None | 7 of 29 days clear or partly cloudy | Too light for the northern lights. |
| July 2027 | None | 8 of 31 days clear or partly cloudy | Too light for the northern lights. |
| August 2027 | 5 hours | 9 of 31 days clear or partly cloudy | |
| September 2027 | 8 hours | 6 of 30 days clear or partly cloudy | Displays tend to be stronger around the equinox. |
Dark hours are for the middle of each month, counted from when the sun is 12 degrees below the horizon. Usual sky is a long-term average from NOAA's climate records (47 years of daytime observations at Juneau). It describes the month, not any one night.
Coming in the next few weeks?
Inside 27 days there is a real outlook: expected activity, cloud for the first week and the moon, night by night.