Kópavogur Weather in May
May in Kópavogur brings low temperatures around 11°C (52°F) during the day, dropping to 4°C (39°F) at night, with quite a bit of rainfall expected, averaging around 97 mm (3.8 in) for the month.
Rainfall in Kópavogur in May
Analyzing past climate data, one can expect approximately 16 days of rain, averaging 97 mm (3.8 in). Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Kópavogur in May
May in Kópavogur brings typical temperatures with highs around 11°C (52°F) and lows of 4°C (39°F). Expect a cold feel throughout the day, not just in the mornings and evenings. Warm layers are essential. With overnight lows of 4°C (39°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Kópavogur in May
Enjoy a sunny month with about 201 hours of sunshine, making it one of the brighter months of the year despite the cool conditions.
Wind Speed in Kópavogur in May
Average wind conditions reach 5 m/s (10 knots) in May. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.
Average water temperature in May
The water temperature is only 8°C (46°F) this month — cold enough that most people will want to stay out. Hardy swimmers may manage a quick dip, but it won't be comfortable.For Kópavogur itself, June and July generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Kópavogur's climate page.
Kópavogur Temperature in May
Min Temperature
4°C (39°F)
Max Temperature
11°C (52°F)
Water Temperature
8°C (46°F) *
Chance of Rain
52%
Precipitation
97 mm (3.8 in)
Rainy days
16 days
Humidity
76% *
Windspeed
5 m/s (10 knots) *
Sunshine
201 hours *
Percentage Sunshine
35% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Kópavogur typically rise from around 7°C (45°F) at the start of May to approximately 11°C (52°F) by the end. Nights are cold, with lows typically ranging from 2°C (36°F) to 6°C (43°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Kópavogur in May
Browse day-by-day weather records for Kópavogur spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kópavogur historical weather extremes in May
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Kópavogur.
- The warmest day in May was on May 18, 2025, with a maximum of 21°C (70°F).
- Kópavogur experienced its chilliest May day on May 3, 1982, reaching only -2°C (28°F).
- Kópavogur registered its coldest May night on May 5, 1982, with temperatures dropping to -7°C (19°F).
Best Places in Iceland in May
Find out more about the weather in Iceland and which places have the best travel conditions in this month. See all of Iceland in May →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Kópavogur in May
The weather can swing between comfortable and chilly in May, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. Expect water temperatures of around 8°C (46°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Kópavogur in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Kópavogur's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Kópavogur climate overview or explore weather in Iceland.
