Ketchikan in August
In August, Ketchikan averages 18°C (65°F) during the day and 13°C (55°F) at night, with frequent rain — about 21 days of the month see precipitation (283 mm total).
High seasonConditions are comfortable for sightseeing without being sweltering. Expect daily rain or showers, often in heavy bursts.
It's peak hurricane season in Ketchikan during August. Travel is possible but expect storm risk, possible flight disruption, and generally lower travel insurance coverage.
How August compares to the rest of the year in Ketchikan
August is one of the warmest months in Ketchikan (2nd of 12) and moderately rainy compared to the rest of the year (9th of 12). Daytime temperature runs 8°C above the annual average (10°C). August runs roughly the same as July (19°C) and cools 3°C in September (15°C).
August sunrise & sunset in Ketchikan
Times shown for Ketchikan local time (America/Sitka), calculated for the 15th of August. They shift by a few minutes day to day across the month.
Photography light in Ketchikan — August
Golden-hour and blue-hour windows for the 15th of August, in Ketchikan's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Ketchikan in August
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on August's tier (High season) and Ketchikan's popularity.
Crowds & pricing — August in Ketchikan
This is a busy month in Ketchikan — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: comfortable tourism weather Northern Hemisphere summer holidays peak hazard season (1 active)
Sun & mosquito risk — August in Ketchikan
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Ketchikan in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 4°C / 39°F | 0°C / 32°F | 366 mm | 23 | — |
| February | 4°C / 38°F | -1°C / 30°F | 251 mm | 19 | — |
| March | 6°C / 43°F | 0°C / 33°F | 255 mm | 21 | — |
| April | 9°C / 49°F | 3°C / 38°F | 281 mm | 23 | — |
| May | 14°C / 58°F | 8°C / 46°F | 151 mm | 19 | — |
| June | 16°C / 61°F | 10°C / 50°F | 174 mm | 22 | — |
| July | 19°C / 65°F | 13°C / 55°F | 179 mm | 22 | — |
| August | 18°C / 65°F | 13°C / 55°F | 283 mm | 21 | — |
| September | 15°C / 59°F | 10°C / 50°F | 343 mm | 22 | — |
| October | 10°C / 51°F | 6°C / 43°F | 372 mm | 23 | — |
| November | 6°C / 43°F | 2°C / 36°F | 401 mm | 25 | — |
| December | 3°C / 38°F | -1°C / 31°F | 333 mm | 21 | — |
Other cities with similar August weather
🌍 See the full ranked list of climate twins for Ketchikan in August →
Frequently asked questions
How hot is Ketchikan in August?
In August, Ketchikan averages a high of 18°C (65°F) and a low of 13°C (55°F) — generally mild and pleasant.
Does it rain a lot in Ketchikan in August?
August is quite rainy in Ketchikan, with about 21 rainy days on average.
Is August a good time to visit Ketchikan?
August is mild and pleasant but on the rainy side. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Ketchikan in August?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full August packing list for Ketchikan for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.