Weather for Gustavus, Alaska
Current Weather
Five Day Weather Forecast
Fri
H: 56°F
L: 48°F
Sat
H: 64°F
L: 47°F
Sun
H: 59°F
L: 49°F
Mon
H: 57°F
L: 48°F
Tue
H: 57°F
L: 47°F
Air Quality
Nitrogen Dioxide: 0.9 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 38 μg/m3
Astronomical
Sun Transit: 1:09 PM
Sunset: 9:40 PM
Daylight: 17 hrs 2 mins
Moon Transit: 9:39 PM
Moonset: 12:24 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%
Best Times for Fishing or Hunting
Major Periods
2:25 AM - 4:55 AM9:09 PM - 11:39 PM
Minor Periods
6:57 PM - 8:27 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Small Craft Advisory issued July 23 at 7:47PM AKDT until July 24 at 5:00PM AKDT by NWS Juneau AK
Effective: Thu July 23, 2026, 7:47 PM
Expires: Fri July 24, 2026, 6:30 AM
Southeast Alaska Inside Waters from Dixon Entrance to Skagway Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent the average of the highest one-third of the combined windwave and swell height. UPDATED ...SMALL CRAFT ADVISORY THROUGH FRIDAY... .REST OF TONIGHT...SW wind 20 kt. Seas 8 ft. Showers. .FRI...S wind 10 kt in the morning becoming E. Seas 8 ft subsiding in the afternoon. Showers in the morning. .FRI NIGHT...NE wind 10 kt. Seas 7 ft. .SAT...N wind 10 kt. Seas 5 ft. .SAT NIGHT...N wind 10 kt. Seas 4 ft. .SUN...Light winds. Seas 3 ft. .MON...Light winds. Seas 3 ft. .TUE...Light winds. Seas 3 ft.
Small Craft Advisory issued July 23 at 6:52PM AKDT until July 24 at 1:00PM AKDT by NWS Juneau AK
Effective: Thu July 23, 2026, 6:52 PM
Expires: Fri July 24, 2026, 7:00 AM
* WHAT...Seas 6 to 8 ft expected. * WHERE...Cross Sound. * WHEN...From 1 AM to 1 PM AKDT Friday. * IMPACTS...Conditions will be hazardous to small craft.
Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Small Craft Advisory issued July 23 at 3:17PM AKDT until July 24 at 5:00PM AKDT by NWS Juneau AK
Effective: Thu July 23, 2026, 3:17 PM
Expires: Fri July 24, 2026, 7:00 AM
Southeast Alaska Inside Waters from Dixon Entrance to Skagway Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent the average of the highest one-third of the combined windwave and swell height. .TONIGHT...SW wind 20 kt diminishing to 15 kt late. Seas building to 8 ft. Showers. .FRI...S wind 10 kt in the morning becoming E. Seas 8 ft subsiding in the afternoon. Showers in the morning. .FRI NIGHT...NE wind 10 kt. Seas 7 ft. .SAT...N wind 10 kt. Seas 5 ft. .SAT NIGHT...N wind 10 kt. Seas 4 ft. .SUN...Light winds. Seas 3 ft. .MON...Light winds. Seas 3 ft. .TUE...Light winds. Seas 3 ft.
Small Craft Advisory issued July 23 at 2:50PM AKDT until July 24 at 1:00PM AKDT by NWS Juneau AK
Effective: Thu July 23, 2026, 2:50 PM
Expires: Thu July 23, 2026, 11:00 PM
* WHAT...Seas to 8 ft expected. * WHERE...Cross Sound. * WHEN...From 1 AM to 1 PM AKDT Friday. * IMPACTS...Conditions will be hazardous to small craft.
Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Weather Forecast
Air Quality
Nitrogen Dioxide: 0.76 μg/m3
Sulphur Dioxide: 0.44 μg/m3
Ozone: 42.46 μg/m3
Astronomical
Sun Transit: 1:09 PM
Sunset: 9:40 PM
Daylight: 17 hrs 2 mins
Moon Transit: 9:39 PM
Moonset: 12:24 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%
Best Times for Fishing or Hunting
Major Periods
2:25 AM - 4:55 AM9:09 PM - 11:39 PM
Minor Periods
6:57 PM - 8:27 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.04 μg/m3
Sulphur Dioxide: 0.35 μg/m3
Ozone: 41.58 μg/m3
Astronomical
Sun Transit: 1:09 PM
Sunset: 9:38 PM
Daylight: 16 hrs 58 mins
Moon Transit: 10:30 PM
Moonset: 12:48 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.2%
Best Times for Fishing or Hunting
Major Periods
3:16 AM - 5:46 AM12:00 AM - 12:00 AM
Minor Periods
8:00 PM - 9:30 PM12:00 AM - 12:00 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.56 μg/m3
Sulphur Dioxide: 0.17 μg/m3
Ozone: 47.42 μg/m3
Astronomical
Sun Transit: 1:09 PM
Sunset: 9:36 PM
Daylight: 16 hrs 54 mins
Moon Transit: 11:22 PM
Moonset: 12:32 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%
Best Times for Fishing or Hunting
Major Periods
4:07 AM - 6:37 AM12:00 AM - 12:00 AM
Minor Periods
8:39 PM - 10:09 PM12:02 AM - 1:32 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.63 μg/m3
Sulphur Dioxide: 0.56 μg/m3
Ozone: 43.88 μg/m3
Astronomical
Sun Transit: 1:09 PM
Sunset: 9:34 PM
Daylight: 16 hrs 50 mins
Moon Transit: 12:00 AM
Moonset: 1:39 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM4:58 AM - 7:28 AM
Minor Periods
9:00 PM - 10:30 PM1:09 AM - 2:39 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.42 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 32 μg/m3
Astronomical
Sun Transit: 1:09 PM
Sunset: 9:32 PM
Daylight: 16 hrs 46 mins
Moon Transit: 12:12 AM
Moonset: 3:03 AM
Moon Phase: Full
Moon Illumination: 99.7%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM5:48 AM - 8:18 AM
Minor Periods
9:12 PM - 10:42 PM2:33 AM - 4:03 AM
Action Rating: 4 out of 5