Reykholt Weather in May
Reykholt in May sees low daytime temperatures of 10°C (50°F) and nighttime lows of 3°C (37°F). Rainfall is fairly high this month at around 115 mm (4.5 in), so pack a rain jacket to stay dry.
Rainfall in Reykholt in May
You can typically expect 14 days of rain this month, averaging around 115 mm (4.5 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Reykholt in May
May in Reykholt sees highs of 10°C (50°F) and lows of 3°C (37°F) overnight. The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. With lows around 3°C (37°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Reykholt in May
Expect sunny days throughout the month, with an estimated 201 hours of sunshine. Despite the cool temperatures, the sunny skies make it a pleasant time to visit Reykholt.May in Reykholt has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
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 Reykholt's climate page.
Reykholt Temperature in May
Min Temperature
3°C (37°F)
Max Temperature
10°C (50°F)
Chance of Rain
48%
Precipitation
115 mm (4.5 in)
Rainy days
14 days
Humidity
76% *
Sunshine
201 hours *
Percentage Sunshine
35% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Reykholt 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 Reykholt in May
Browse day-by-day weather records for Reykholt spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Reykholt historical weather extremes in May
Based on 50 years of weather observations in Reykholt between 1976 and 2026, these are the recorded extremes.
- On May 18, 2025, temperatures climbed to 20°C (68°F), marking the warmest May day on record.
- The coldest May day was on May 1, 1982, with a maximum of -3°C (27°F).
- The lowest overnight temperature recorded in May was -7°C (19°F) (May 5, 1982).
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 Reykholt in May
The weather can be unpredictable in May, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Reykholt 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 Reykholt's climate page.
Temperature Rainfall Sunshine Humidity
See the full Reykholt climate overview or explore weather in Iceland.
