Early autumn · Weather & things to do
Seward in September
Seward cools off: highs slip to 52°F (11°C), from 58°F in August, with lows of 47°F (8°C) and about 11.7 in (296 mm) of rain.
Our comfort score puts it mid-table at 39/100, 4th of 12.
- Avg high
- 52°F (11°C)
- Avg low
- 47°F (8°C)
- Rain
- 11.7 in (296 mm)
- Humidity
- 89%
- Cloud cover
- 79%
- Daylight
- ~12 h 31 min
- Comfort score
- 39/100 · Tough
What September feels like
Cool days top out near 52°F (11°C), better for brisk walks than lingering outside.
Nights cool to an average low of 47°F (8°C).
It's a very wet month, with around 11.7 in (296 mm) of rain, so keep plans flexible and have indoor backups ready.
Skies are often grey, with average cloud cover around 79%.
Plan around September
September sits mid-table; the best months are June – August.
- Start of the wettest three-month stretch (September – November), which brings about 33.4 in (849 mm) in total.
- Comfort slips from 53/100 in August to 39/100.
- Our Alaska Glacier Route recommends Jun – Aug, so September falls outside its suggested window.
What to pack for September
- Insulated jackethighs only 52°F
- Rain jacket and waterproof shoesfrequent rain
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Seward in September
Wet days call for a roof: these picks favor sit-down and indoor stops, plus a few for drier spells.
Alaska SeaLife Center
Aquarium and marine rescue center with Steller sea lions, puffins and harbor seals.
Why now Our curated notes list it for "rainy day", which suits a wetter month.
Seward Brewing Company
Downtown brewpub with house beers and Alaska-sourced food.
Why now A sit-down stop to wait out showers in a month with 11.7 in of rain.
Resurrection Roadhouse
Lodge restaurant at Seward Windsong Lodge on the road to Exit Glacier.
Why now Easy to slot in when September's rain moves in.
Mount Marathon
Seward's town mountain, site of the July 4 race; the hikers' trail gives bay views.
Sunny Cove Sea Kayaking
Guided kayak trips in Resurrection Bay, including paddles near Aialik Glacier.
Nearby in September
- Anchorage in September~79 mi · highs 55°F, 4.6 in rain · 1°C (3°F) warmer by day, drier
- Homer in September~80 mi · highs 53°F, 7.4 in rain · similar daytime temperatures, drier
- Talkeetna in September~155 mi · highs 54°F, 5.8 in rain · 1°C (2°F) warmer by day, drier
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~505 m to Seward's ~35 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Seward in September: quick answers
Is September a good time to visit Seward?
It's middling, scoring 39/100. The best months are June – August, at up to 58. Expect highs of 52°F (11°C) and 11.7 in (296 mm) of rain. Our Alaska Glacier Route recommends Jun – Aug, so September is outside its suggested window.
How cold is Seward in September?
Average highs are 52°F (11°C) and average lows 47°F (8°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in Seward in September?
Yes: about 11.7 in (296 mm) of rain falls across September on average, the 2nd-wettest month of the year. The annual total is about 103.7 in (2635 mm).
What should I pack for Seward in September?
Bring insulated jacket (highs only 52°F), rain jacket and waterproof shoes (frequent rain) and comfortable walking shoes (most places below are best reached on foot or with short walks).
Planning Seward in September?
Share this September plan with your group, poll everyone on dates and keep the packing list in one place.