The best times to visit Ketchikan for ideal weather are

March 19th to June 3rd

or

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.


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    Weather in Ketchikan

    Temperature

    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)

    Key
    High
    Average
    Low

    Ketchikan Temperatures (Celsius)

    Key
    High
    Average
    Low

    “Feels-Like” Temperatures

    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)

    Key
    High
    Average
    Low

    Ketchikan Perceived Temperature (C)

    Key
    High
    Average
    Low

     

    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.

    Show Fahrenheit

    MonthAvg. High (°F)Avg. Mean (°F)Avg. Low (°F)
    Jan88.477.268
    Feb86.375.867.5
    Mar84.973.662.8
    Apr80.268.659
    May70.360.853.3
    Jun65.955.145.8
    Jul62.452.143.9
    Aug66.656.748.8
    Sep69.959.251.1
    Oct73.863.956.3
    Nov81.170.261.6
    Dec86.975.766.6

    Show Celsius

    MonthAvg. High (°C)Avg. Mean (°C)Avg. Low (°C)
    Jan31.325.120
    Feb30.224.319.7
    Mar29.423.117.1
    Apr26.820.315
    May21.31611.8
    Jun18.812.87.7
    Jul16.911.26.6
    Aug19.213.79.3
    Sep21.115.110.6
    Oct23.217.713.5
    Nov27.321.216.4
    Dec30.524.319.2


     

    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.

    Chanceof Precipitation

    The graph below shows the % chance of rainy and snowy days in Ketchikan.

    Key
    Days with precipitation

    Snow on the Ground

    The graph below shows the average snow on the ground in Ketchikan (in).

    Key
    Snow depth

    Average Rain and Snow by Month

    Show Inches

    MonthDaily Chance of RainAverage Snow Depth (in)Total Precipitation (in)
    Jan24%05.5
    Feb26%06.9
    Mar14%03.3
    Apr14%05.2
    May16%03.3
    Jun4%01.1
    Jul10%6.72.7
    Aug22%07.6
    Sep18%04.3
    Oct18%05.6
    Nov21%06.7
    Dec17%03.7

    Show Centimeters

    MonthDaily Chance of RainAverage Snow Depth (cm)Total Precipitation (cm)
    Jan24014
    Feb26017.5
    Mar1408.4
    Apr14013.2
    May1608.4
    Jun402.8
    Jul10176.9
    Aug22019.3
    Sep18010.9
    Oct18014.2
    Nov21017
    Dec1709.4

     

    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.

    Key
    Avg. Relative Humidity

    Wind

    The graph below shows wind speed (max and average) in knots.

    Key
    Max Sustained Wind
    Average Daily Wind

    Average Wind Speeds

    Show Wind Speeds

    All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

    MonthAvg. WindAvg. Wind FeelSustained High WindHigh Wind Feel
    Jan4.9Light breeze8.9Gentle breeze
    Feb4.5Light breeze8.4Gentle breeze
    Mar4.3Light breeze7.8Gentle breeze
    Apr4Light breeze7.3Gentle breeze
    May3.7Barely noticeable7.2Gentle breeze
    Jun3.9Barely noticeable7.3Gentle breeze
    Jul3.8Barely noticeable7.3Gentle breeze
    Aug4.5Light breeze8.3Gentle breeze
    Sep5.2Light breeze9.1Gentle breeze
    Oct5.1Light breeze8.8Gentle breeze
    Nov5.2Light breeze9.1Gentle breeze
    Dec4.7Light breeze8.6Gentle breeze

    Show Relative Humidity by Month

    MonthAvg. Relative Humidity
    Jan56.5%
    Feb62.4%
    Mar59.1%
    Apr60.6%
    May71.9%
    Jun63.3%
    Jul65.6%
    Aug65.1%
    Sep59.4%
    Oct64%
    Nov57%
    Dec53.6%

     

    Is it Safe to Travel to Ketchikan?

    Our best data indicates this area is generally safe. As of Aug 21, 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 Aug 14, 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

    Key
    Tourists Seeking Accommodations

    Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is very reliable. Displayed data is calculated relative to the peak, so a score of 55.5 in June means 55.5% of the tourists vs. January.


    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.

     

    Best Times to Travelthe United States › Ketchikan, AK, US


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