Temperatures in May
It's cold in May in Keflavík with an average temperature of 9°C. Temperatures this month range from a low of 7°C to a high of 11°C. At night, you can expect temperatures between 2°C and 6°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Keflavík in May. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of May
The month of May starts in Keflavík with cold temperatures, averaging around 9°C during the day and nights close to 4°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-May
By mid-May, the average daytime temperature rises to around 10°C, with nights close to 5°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of May
By the end of May, the average daytime temperature in Keflavík will be around 11°C, with nights close to 6°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
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Precipitation in May
In May, there is an average of 87 mm of precipitation, spread over 14 days. Of the total precipitation, about 0,4 cm falls as snow in May. The wind speed is around 5 Bft, mostly coming from the Southeast.
The average precipitation chance is 45% per day this month. Though it seems average, the weather’s variable. Some days have higher, others lower precipitation chances.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in May for Keflavík. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Keflavík in May |
London | ||
|---|---|---|---|
 Average Temperature |
9°C | 18°C | |
 High Temp |
11°C | 21°C | |
| Low Temp |
7°C | 15°C | |
 Total Precipitation |
87 mm | 46 mm | |
| Rainy Days |
14 days | 8 days | |
 Total Snowfall |
0,4 cm | 0 cm | |
| Snowy Days |
1 day | 0 days | |
April
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Temperature records for Keflavík in May
With 15°C, Keflavík hit the highest temperature in the last 10 years in May 2020. The lowest daytime temperature in this month was 2°C in 2015. The extreme night temperatures ranged from a low of -5°C to a high of 9°C.
Check out the climate of Keflavík for all months and discover the best travel time
Curious about the climate in other parts of Iceland? Check out the weather and climate in places like Reykjavík, Vík, or have a look at other destinations in Iceland.
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Daily Temperature in May in Keflavík
This chart shows the average daily temperatures, both day and night, for each day in May in Keflavík, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in May in Keflavík
The chart below shows the average daily precipitation in May for Keflavík, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for May, you can expect around 14 days of rain in Keflavík.
Daily Snowfall in May in Keflavík
This chart shows the average daily snowfall in May in Keflavík, measured in centimetres. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in May.
Daily UV Index in May in Keflavík
This chart shows the average daily UV index in May in Keflavík, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in May in Keflavík Over the Years
This chart shows the average temperature in May in Keflavík, measured in degrees Celsius, over the past years.
Total Precipitation in May in Keflavík Over the Years
This chart shows the average precipitation in May in Keflavík, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Snowfall in May in Keflavík per year
This chart shows the average snowfall in May in Keflavík, measured in centimetres, over the past years.
Daily climate in May for Keflavík
Click on a specific day in May for detailed info on the typical weather on that day in Keflavík. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in Keflavík
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Average Weather in Keflavík by Month
Click on a month below to see detailed weather info for Keflavík. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
