Alaska (Ketchikan) · 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 | 5° (41°)-2– (28–)9 (48) | 5° (41°)-1– (30–)9 (48) | 7° (45°)1– (34–)11 (52) | 10° (50°)5– (41–)16 (61) | 14° (57°)8– (46–)23 (73) | 16° (61°)10– (50–)25 (77) | 18° (64°)13– (55–)26 (79) | 19° (66°)13– (55–)24 (75) | 15° (59°)11– (52–)19 (66) | 11° (52°)6– (43–)15 (59) | 7° (45°)1– (34–)11 (52) | 5° (41°)-2– (28–)9 (48) |
Ø night, range from coldest to warmest nightØ nightrange | 1° (34°)-9– (16–)6 (43) | 0° (32°)-8– (18–)5 (41) | 1° (34°)-7– (19–)4 (39) | 3° (37°)-2– (28–)7 (45) | 7° (45°)2– (36–)11 (52) | 10° (50°)5– (41–)13 (55) | 13° (55°)8– (46–)15 (59) | 13° (55°)7– (45–)15 (59) | 10° (50°)5– (41–)13 (55) | 6° (43°)-1– (30–)10 (50) | 3° (37°)-5– (23–)7 (45) | 1° (34°)-7– (19–)6 (43) |
☀️Sunshine | 1h UV 1 | 3h UV 2 | 5h UV 4 | 6h UV 5 | 7h UV 6 | 6h UV 6 | 5h UV 5 | 5h UV 5 | 4h UV 4 | 3h UV 2 | 2h UV 1 | 1h UV 1 |
🌊Water Temp | 6° (43°) | 6° (43°) | 6° (43°) | 7° (45°) | 9° (48°) | 12° (54°) | 13° (55°) | 14° (57°) | 13° (55°) | 11° (52°) | 9° (48°) | 7° (45°) |
🌧Rain Days | 19d455mm (17.9") | 14d308mm (12.1") | 17d306mm (12.1") | 16d292mm (11.5") | 12d202mm (8.0") | 12d189mm (7.5") | 12d205mm (8.1") | 13d278mm (11.0") | 17d384mm (15.1") | 19d481mm (19.0") | 21d443mm (17.4") | 18d404mm (15.9") |
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 months to visit Alaska (Ketchikan) — with 5 sunshine hours per day and pleasant highs of 19°C (66°F).
Daytime highs average 19°C (66°F), cooling to 13°C (55°F) at night (daily average: 15°C (59°F)). Peaks reach around 24°C (75°F), the coldest nights around 7°C (45°F). With 5 sunshine hours per day and 13 rain days (278 mm (10.9 in)), this is one of the cloudier months. 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.
Peak season: cruise ships tie up daily, the totem poles and Creek Street are busy, and in summer salmon run up the creeks. It rains often even now, but May and June are the driest months of the season. Floatplane flights to Misty Fjords are the highlight of many trips.
Events & Festivals
- Blueberry Arts Festivalfirst weekend of August
An arts and street festival running since 1975, with art and food booths, blueberry dishes, a slug race and a poetry slam.
Packing list for Alaska (Ketchikan) 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 (Ketchikan)?
- Yes — August is one of the best months to visit Alaska (Ketchikan) (Climate Score: 61/100). Pleasant temperatures (19°C (66°F)), good sunshine (5 h/day), and few rain days (13) make it one of the most recommended months.
- How warm is it in Alaska (Ketchikan) in August?
- In August, Alaska (Ketchikan) sees daily highs of 19°C (66°F). Nights cool to 13°C (55°F), with a daily average of 15°C (59°F). Peaks reach around 24°C (75°F), the coldest nights around 7°C (45°F).
- How much rain falls in Alaska (Ketchikan) in August?
- In August, Alaska (Ketchikan) receives an average of 278 mm (10.9 in) of rain over 13 rain days. An umbrella may occasionally be needed.
- How many sunshine hours does Alaska (Ketchikan) get in August?
- Alaska (Ketchikan) averages 5 sunshine hours per day in August — above the annual average.
- How warm is the water in Alaska (Ketchikan) in August?
- Water temperature in Alaska (Ketchikan) in August averages 14°C (57°F) — still quite cool — a wetsuit may be useful.
