The best times to visit Ketchikan for ideal weather are
March 19th to June 3rd
August 20th to December 2nd
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Ketchikan Travel Guide
Weather in Ketchikan
Average temperatures in Ketchikan vary greatly. Considering humidity, temperatures feel nice most of the year, excluding some hot weeks in the summer, with a fair chance of precipitation about half of the year. The area is somewhat temperate — in the 52nd percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Ketchikan, the hottest months are January, February, and then December. See average monthly temperatures below. The warmest time of year is generally early March where highs are regularly around 90.5°F (32.5°C) with temperatures rarely dropping below 67.2°F (19.6°C) at night.
Ketchikan Temperatures (Fahrenheit)
Ketchikan Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Ketchikan Perceived Temperature (F)
Ketchikan Perceived Temperature (C)
Average Ketchikan Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Ketchikan are June, July, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid June. For example, on the week of June 18th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid February with an average of 3 days of significant precipitation the week of February 19th.
When can you find snow in Ketchikan? Weather stations report moderate or seasonal snow likely to be deepest around July, especially close to early July. The best time to ski (if at all) in Ketchikan is often around around July 2nd when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
The graph below shows the % chance of rainy and snowy days in Ketchikan.
Snow on the Ground
The graph below shows the average snow on the ground in Ketchikan (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Ketchikan has some very humid months, with other comfortably humid months. The least humid month is December (53.6% relative humidity), and the most humid month is May (71.9%).
Wind in Ketchikan is usually calm. The windiest month is November, followed by September and October. November’s average wind speed of around 5.2 knots (6 MPH or 9.6 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid to late September where average top sustained speeds reach 9.7 knots, which is considered a gentle breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Ketchikan.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||4.9||Light breeze||8.9||Gentle breeze|
|Feb||4.5||Light breeze||8.4||Gentle breeze|
|Mar||4.3||Light breeze||7.8||Gentle breeze|
|Apr||4||Light breeze||7.3||Gentle breeze|
|May||3.7||Barely noticeable||7.2||Gentle breeze|
|Jun||3.9||Barely noticeable||7.3||Gentle breeze|
|Jul||3.8||Barely noticeable||7.3||Gentle breeze|
|Aug||4.5||Light breeze||8.3||Gentle breeze|
|Sep||5.2||Light breeze||9.1||Gentle breeze|
|Oct||5.1||Light breeze||8.8||Gentle breeze|
|Nov||5.2||Light breeze||9.1||Gentle breeze|
|Dec||4.7||Light breeze||8.6||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Ketchikan?
Our best data indicates this area is generally safe. As of Mar 17, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Mar 15, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Ketchikan, AK, US is January, followed by February and October. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Ketchikan in June. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Ketchikan Travel Experience by Season
Fall (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 90.5°F (32.5°C) and 67.5°F (19.7°C) with colder temperatures in the later months. Rain is somewhat common with 4 to 5 days of significant precipitation per month. Fall is fairly slow for tourism, which makes it a good time for those looking for deals.
Winter (June through August)
The middle-year months have comfortably cool weather with high temperatures that are comfortable. These months see the least precipitation with 1 to 7 days of precipitation per month. June – August is the slowest season for tourism in Ketchikan, so lodging and other accommodations may cost less than usual.
Spring (September through November)
Spring daily highs range from 82.9°F (28.3°C) and 68.4°F (20.2°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 5 to 6 days per month. Tourism is the second busiest during these months due to the weather, so hotels may be slightly higher priced.
Summer (December through February)
Weather is perfect this time of year in Ketchikan to be enjoyable for warm weather travelers. The average high during this season is between 89.3°F (31.8°C) and 81.7°F (27.6°C). On average, it rains or snows a fair amount: 5 to 7 times per month. These times of year are the busiest with tourists.