Alaska (Seward) · August
Best travel monthPeak seasonUSA · North America
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, range from coolest to warmest dayØ dayrange | 0° (32°)-12– (10–)6 (43) | 1° (34°)-9– (16–)6 (43) | 3° (37°)-6– (21–)8 (46) | 7° (45°)2– (36–)14 (57) | 12° (54°)6– (43–)19 (66) | 15° (59°)10– (50–)23 (73) | 17° (63°)11– (52–)24 (75) | 17° (63°)12– (54–)23 (73) | 13° (55°)8– (46–)19 (66) | 8° (46°)1– (34–)13 (55) | 2° (36°)-7– (19–)8 (46) | 1° (34°)-9– (16–)7 (45) |
Ø night, range from coldest to warmest nightØ nightrange | -5° (23°)-16– (3–)1 (34) | -4° (25°)-13– (9–)1 (34) | -3° (27°)-13– (9–)1 (34) | 1° (34°)-6– (21–)4 (39) | 5° (41°)-1– (30–)8 (46) | 8° (46°)3– (37–)11 (52) | 11° (52°)6– (43–)14 (57) | 11° (52°)5– (41–)13 (55) | 7° (45°)1– (34–)10 (50) | 3° (37°)-4– (25–)8 (46) | -3° (27°)-11– (12–)3 (37) | -4° (25°)-14– (7–)2 (36) |
☀️Sunshine | 1h UV 1 | 4h UV 2 | 7h UV 4 | 9h UV 6 | 10h UV 7 | 10h UV 7 | 9h UV 6 | 7h UV 5 | 5h UV 4 | 4h UV 2 | 2h UV 1 | 1h UV 0 |
🌊Water Temp | 6° (43°) | 5° (41°) | 5° (41°) | 5° (41°) | 7° (45°) | 11° (52°) | 13° (55°) | 14° (57°) | 13° (55°) | 10° (50°) | 8° (46°) | 7° (45°) |
🌧Rain Days | 10d141mm (5.5") | 8d106mm (4.2") | 7d79mm (3.1") | 9d82mm (3.2") | 8d76mm (3.0") | 7d52mm (2.1") | 8d89mm (3.5") | 13d148mm (5.8") | 14d229mm (9.0") | 13d224mm (8.8") | 10d152mm (6.0") | 10d161mm (6.3") |
Best travel time current monthØ = average · small figures = range: coolest–warmest day / coldest–warmest nightClimate data 2005–2025 · Source: ERA5 + station data
Peak season — flights and hotels at their annual highest. Book early.
August is one of the best travel months for Alaska (Seward) — conditions are stable, temperatures reach 17°C (63°F), and outdoor activities are excellent.
Daytime highs average 17°C (63°F), cooling to 11°C (52°F) at night (daily average: 13°C (55°F)). Peaks reach around 23°C (73°F), the coldest nights around 5°C (41°F). The sun shines an average of 7 hours per day; there are 13 rain days with 148 mm (5.8 in) total. At 14°C (57°F), the water is still quite cool in August — a wetsuit may be useful.
Layer up — warm days and cool evenings alternate. Perfect timing for hikes and sightseeing.
High summer on the bay: day boats to the glaciers are full, sea otters and sea lions lie on the rocks, and silver salmon run along the shore. The air is mild, though the rain picks up towards August. Anyone heading out on the water should pack warm clothing.
Events & Festivals
- Seward Silver Salmon Derbymid-August (about nine days)
A fishing tournament since 1956: the goal is the heaviest silver salmon from Resurrection Bay.
Packing list for Alaska (Seward) in August
- Long-sleeved shirts and light trousers
- Light jacket
- Sunscreen
- Sunglasses
- Light umbrella or rain poncho
- Travel first-aid kit
Frequently Asked Questions
- Is August a good time to visit Alaska (Seward)?
- Yes — August is one of the best months to visit Alaska (Seward) (Climate Score: 43/100). Pleasant temperatures (17°C (63°F)), good sunshine (7 h/day), and few rain days (13) make it one of the most recommended months.
- How warm is it in Alaska (Seward) in August?
- In August, Alaska (Seward) sees daily highs of 17°C (63°F). Nights cool to 11°C (52°F), with a daily average of 13°C (55°F). Peaks reach around 23°C (73°F), the coldest nights around 5°C (41°F).
- How much rain falls in Alaska (Seward) in August?
- In August, Alaska (Seward) receives an average of 148 mm (5.8 in) of rain over 13 rain days. An umbrella may occasionally be needed.
- How many sunshine hours does Alaska (Seward) get in August?
- Alaska (Seward) averages 7 sunshine hours per day in August — above the annual average.
- How warm is the water in Alaska (Seward) in August?
- Water temperature in Alaska (Seward) in August averages 14°C (57°F) — still quite cool — a wetsuit may be useful.
