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.
Keflavik Travel Guide
Weather in Keflavik
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)
Keflavik 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.
Keflavik Perceived Temperature (F)
Keflavik Perceived Temperature (C)
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.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
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 Keflavik.
Snow on the Ground
The graph below shows the average snow on the ground in Keflavik (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
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.
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||15.4||Significant breeze||22.8||Very strong breeze|
|Feb||14.7||Significant breeze||22.2||Very strong breeze|
|Mar||14.1||Significant breeze||20.6||Very strong breeze|
|Apr||12.3||Significant breeze||17||Strong breeze|
|May||11.5||Significant breeze||15.6||Very strong breeze|
|Jun||10.4||Gentle breeze||14.7||Significant breeze|
|Jul||9.8||Gentle breeze||13.5||Very strong breeze|
|Aug||10.1||Gentle breeze||13.6||Significant breeze|
|Sep||13.9||Significant breeze||19.7||Very strong breeze|
|Oct||14.6||Significant breeze||21.2||Strong breeze|
|Nov||14.8||Significant breeze||21.3||Very strong breeze|
|Dec||14.1||Significant breeze||20.3||Strong breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
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
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.