Ketchikan weather by month & the best time to visit
United States · seaside town · oceanic / maritime climate
The best time to visit Ketchikan is July — its sunniest month (Sunshine Score 48/100), with August and June close behind. Ketchikan averages about 1,127 hours of sunshine a year. Daytime highs around 18°C / 64°F and roughly 168 mm of rain in July.
When is the best time to visit Ketchikan?
For sunshine, the best time to visit Ketchikan is July, then August and June. The dullest month is January (0/100, 302 mm of rain). The full month-by-month picture is in the table below.
How sunny is Ketchikan?
Ketchikan isn't a sunny place by world standards: about 1,127 hours of sunshine a year. 48 Sunshine Score points separate July (48) from January (0), so the month you pick matters. It ranks #571 of 580 destinations in United States for annual sunshine, below the national median of 2,279 hours. The year's 2,754 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 0 | 3° / 37°F | -1° / 30°F | 302 mm | 0 | 7° / 45°F |
| February | 0 | 3° / 37°F | -2° / 28°F | 186 mm | 0 | 7° / 45°F |
| March | 0 | 5° / 41°F | 0° / 32°F | 208 mm | 1 | 7° / 45°F |
| April | 5 | 9° / 48°F | 3° / 37°F | 184 mm | 2 | 8° / 46°F |
| May | 24 | 13° / 55°F | 6° / 43°F | 147 mm | 3 | 10° / 50°F |
| June | 39 | 16° / 61°F | 9° / 48°F | 147 mm | 4 | 13° / 55°F |
| July | 48 | 18° / 64°F | 12° / 54°F | 168 mm | 4 | 16° / 61°F |
| August | 48 | 18° / 64°F | 12° / 54°F | 219 mm | 3 | 17° / 63°F |
| September | 33 | 15° / 59°F | 9° / 48°F | 279 mm | 2 | 13° / 55°F |
| October | 10 | 10° / 50°F | 5° / 41°F | 325 mm | 1 | 10° / 50°F |
| November | 0 | 5° / 41°F | 1° / 34°F | 301 mm | 0 | 9° / 48°F |
| December | 0 | 3° / 37°F | -1° / 30°F | 288 mm | 0 | 8° / 46°F |
Sea temperature in Ketchikan by month
The sea off Ketchikan is warmest in August at around 17°C / 63°F, and coolest in January at 7°C / 45°F. It never reaches comfortable swimming temperatures (21°C+). Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Head-to-head
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Ketchikan: questions and answers
What kind of destination is Ketchikan?
Ketchikan is a seaside town in United States with a oceanic / maritime climate — the sea reaches 17°C at its warmest.
How many hours of sunshine does Ketchikan get a year?
Ketchikan gets about 1,127 hours of sunshine a year, at its best around July.
When is the best time to visit Ketchikan?
The sunniest time to visit Ketchikan is July, when the Sunshine Score peaks at 48/100 (with August and June close behind). Expect daytime highs around 18°C / 64°F.
What is the least sunny month in Ketchikan?
January is the least sunny month in Ketchikan, scoring 0/100 with about 302 mm of rain.
What is the sea temperature in Ketchikan?
The sea in Ketchikan ranges from about 7°C (January) to 17°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Ketchikan?
The typical midday UV index in Ketchikan peaks around 4 (moderate) in June, easing to about 0 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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