The best times to visit Keflavik for ideal weather are

January 1st to December 30th

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 Keflavik

    Temperature

    Average temperatures in Keflavik vary somewhat. Considering humidity, temperatures feel cold all year with a very low chance of rain or snow throughout the year. The area is less temperate than some — in the 34th 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 Keflavik, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late July where highs are regularly around 56.3°F (13.5°C) with temperatures rarely dropping below 46.1°F (7.8°C) at night.

    Keflavik Temperatures (Fahrenheit)

    Key
    High
    Average
    Low

    Keflavik 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.

    Keflavik Perceived Temperature (F)

    Key
    High
    Average
    Low

    Keflavik Perceived Temperature (C)

    Key
    High
    Average
    Low

     

    Average Keflavik 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)
    Jan34.730.625.9
    Feb33.929.724.8
    Mar36.33227.9
    Apr41.635.630.3
    May44.739.935.6
    Jun51.746.241.8
    Jul53.148.644.8
    Aug52.648.244
    Sep50.244.638.8
    Oct42.837.832.6
    Nov3832.727.1
    Dec37.532.527.2

    Show Celsius

    MonthAvg. High (°C)Avg. Mean (°C)Avg. Low (°C)
    Jan1.5-0.8-3.4
    Feb1.1-1.3-4
    Mar2.40-2.3
    Apr5.32-0.9
    May7.14.42
    Jun10.97.95.4
    Jul11.79.27.1
    Aug11.496.7
    Sep10.173.8
    Oct63.20.3
    Nov3.30.4-2.7
    Dec3.10.3-2.7


     
    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 Keflavik.

    Key
    Days with precipitation

    Snow on the Ground

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

    Key
    Snow depth

    Average Rain and Snow by Month

    Show Inches

    MonthDaily Chance of RainAverage Snow Depth (in)Total Precipitation (in)
    Jan0%00
    Feb0%00
    Mar0%00
    Apr0%00
    May0%00
    Jun0%00
    Jul0%00
    Aug0%00
    Sep0%00
    Oct0%00
    Nov0%00
    Dec0%00

    Show Centimeters

    MonthDaily Chance of RainAverage Snow Depth (cm)Total Precipitation (cm)
    Jan000
    Feb000
    Mar000
    Apr000
    May000
    Jun000
    Jul000
    Aug000
    Sep000
    Oct000
    Nov000
    Dec000
    –>

     

    Humidity and Wind

    Keflavik has some extremely humid months, and high humidity throughout the year. The least humid month is December (70.3% relative humidity), and the most humid month is July (82.1%).

    Wind in Keflavik is usually stronger than many places. The windiest month is January, followed by November and February. January’s average wind speed of around 15.4 knots (17.7 MPH or 28.5 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid February where average top sustained speeds reach 27.1 knots, which is considered a strong breeze.

    Relative Humidity (%)

    The graph below shows the average % humidity by month in Keflavik.

    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
    Jan15.4Significant breeze22.8Very strong breeze
    Feb14.7Significant breeze22.2Very strong breeze
    Mar14.1Significant breeze20.6Very strong breeze
    Apr12.3Significant breeze17Strong breeze
    May11.5Significant breeze15.6Very strong breeze
    Jun10.4Gentle breeze14.7Significant breeze
    Jul9.8Gentle breeze13.5Very strong breeze
    Aug10.1Gentle breeze13.6Significant breeze
    Sep13.9Significant breeze19.7Very strong breeze
    Oct14.6Significant breeze21.2Strong breeze
    Nov14.8Significant breeze21.3Very strong breeze
    Dec14.1Significant breeze20.3Strong breeze

    Show Relative Humidity by Month

    MonthAvg. Relative Humidity
    Jan75.8%
    Feb74.5%
    Mar75.9%
    Apr73.9%
    May77%
    Jun76.6%
    Jul82.1%
    Aug79.8%
    Sep73.2%
    Oct76%
    Nov73.1%
    Dec70.3%

     

    Is it Safe to Travel to Keflavik?

    Our best data indicates this area is generally safe. As of Mar 17, 2019 there are no travel advisories or warnings for Iceland; 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 Jun 19, 2018.


     

    The Busiest and Least Crowded Months

    The busiest month for tourism in Keflavik, Iceland is January, followed by December and February. 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 Keflavik in April. 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 extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 66.7 in April means 66.7% of the tourists vs. January.


    Overall Keflavik Travel Experience by Season

    Spring (March through May)

    Humidity and temperatures combine to make this season feel very cold. Highs range from 52.1°F (11.2°C) and 31.5°F (-0.3°C) with warmer temperatures in the later months. Spring is the slowest for tourism, which makes it a good time for those looking for deals.

    Summer (June through August)

    The middle-year months have cold weather with high temperatures that are still jacket weather. June – August is the second busiest season for tourism in Keflavik, so lodging and other accommodations may cost slightly more.

    Fall (September through November)

    Fall daily highs range from 52.1°F (11.2°C) and 34.2°F (1.2°C), which will feel chilly given the humidity and wind. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.

    Winter (December through February)

    Weather is far too cold this time of year in Keflavik to be enjoyable for warm weather travelers. The average high during this season is between 40.4°F (4.7°C) and 31.5°F (-0.3°C). These times of year are the busiest with tourists.

     

    Best Times to TravelIceland › Keflavik, Iceland


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