IcelandThe weather in May in Keflavík
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.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for Keflavík, Iceland. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 15°C in 2020, Keflavík reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 2°C in 2015. The extreme nighttime temperatures ranged from a lowest recorded value of -5°C to a highest value of 9°C.
Precipitation and snowfall
In May, there is an average of 87 mm of precipitation, spread over 12 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.
Daily weather in May for Keflavík
Click on any day in May to get detailed info about the usual weather on that day in Keflavík. Check out the historical temperatures and precipitation over the past 10 years on this day.
May weather comparison
| Keflavík | New York | |
|---|---|---|
| Average temperature | 9°C | 22°C |
| Max. temperature | 11°C | 28°C |
| Min. temperature | 2°C | -5°C |
| Total precipitation | 87 mm | 105 mm |
| Rainy days | 12 days | 14 days |
| Total snowfall | 0,4 cm | 0 cm |
| Snowy days | 1 day | 0 days |
Start of May
The month of May starts in Keflavík with cold temps, averaging around 9°C during the day and nights around 4°C.
Mid May
By mid-May, daytime temps rise to around 10°C, with nights around 5°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of May
By the end of May, the average daytime temperature in Keflavík is around 11°C, while nighttime temps are about 6°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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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.
Check out the climate of Keflavík for all months and discover the best travel time
Curious about the weather in other parts of Iceland? Check out the climate and weather for spots like Reykjavík, Vík, or explore other destinations in Iceland.
Temperature charts
These charts show the average temperatures in May in Keflavík, Iceland. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in May in Keflavík
Temperature in May in Keflavík over the years
Precipitation charts
These charts show the average amount of precipitation in May in Keflavík, Iceland. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in May in Keflavík
Total precipitation in May in Keflavík over the years
Daily Snowfall in May in Keflavík
Snowfall in May in Keflavík per year
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.
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.