May weather forecastHöfn, Iceland
May
Weather in May
May marks true springtime in Höfn, evident in the reduction of snowfall to a minimal 9mm (0.35"). A marked difference from earlier in the year, the new season brings an increase in temperature and significantly longer daylight hours. Additionally, the rate of rainfall lessens, while the UV index remains stable. Despite the increasing sea temperature, the visible cloud cover percentage shows a slight decrease. Overall, May is the first manifestation of the transition towards summer weather conditions.Temperature
Höfn's average high-temperature in May is a still wintry 5.7°C (42.3°F), indicating a subtle variation from April. During May, Höfn perceives a slight decrease in temperature from daytime highs, settling at an average low of 2.9°C (37.2°F).Humidity
In May, the average relative humidity in Höfn is 80%.Rainfall
In Höfn, during May, the rain falls for 16.2 days and regularly aggregates up to 61mm (2.4") of precipitation. Throughout the year, in Höfn, there are 197.4 rainfall days, and 1278mm (50.31") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Höfn. May is the last month it regularly snows. During 2.3 snowfall days, in May, Höfn aggregates 9mm (0.35") of snow. In Höfn, Iceland, during the entire year, snow falls for 50 days and aggregates up to 530mm (20.87") of snow.Sea temperature
In May, the average sea temperature in Höfn, Iceland, is 7.3°C (45.1°F).Note: Navigating the 7.3°C (45.1°F) at 13°C (55.4°F) is no joy, and temperatures less than 10°C (50°F) can threaten breathing and cause a chilling shock, gauging personal stamina.
Daylight
The average length of the day in May is 18h and 32min.On the first day of May in Höfn, sunrise is at 04:29 and sunset at 21:26. On the last day of the month, sunrise is at 02:54 and sunset at 23:03 GMT.
Sunshine
In Höfn, the average sunshine in May is 8.5h.UV index
January through May, September through December, with an average maximum UV index of 2, are months with the lowest UV index in Höfn. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In May, the maximum UV index of 2 translates into these guidelines:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Höfn, Iceland
- Average high temperature in May: 5.7°C
The warmest months (with the highest average high temperature) are July and August (10.3°C).
The month with the lowest average high temperature is December (2.2°C).
- Average low temperature in May: 2.9°C
The months with the highest average low temperature are July and August (8.3°C).
The coldest month (with the lowest average low temperature) is December (-1.3°C).
Average pressure in May
Höfn, Iceland
- Average pressure in May: 1012.9mbar
The month with the highest atmospheric pressure is June (1014.2mbar).
The month with the lowest atmospheric pressure is January (998.3mbar).
Average wind speed in May
Höfn, Iceland
- Average wind speed in May: 19.2km/h
The windiest month (with the highest average wind speed) is December (28.7km/h).
The calmest month (with the lowest average wind speed) is July (15.7km/h).
Average humidity in May
Höfn, Iceland
- Average humidity in May: 80%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is December (77%).
Average rainfall in May
Höfn, Iceland
- Average rainfall in May: 61mm
The wettest month (with the highest rainfall) is February (151mm).
The driest month (with the least rainfall) is June (47mm).
Average rainfall days in May
Höfn, Iceland
- Average rainfall days in May: 16.2 days
The month with the highest number of rainy days is October (19.5 days).
The month with the least rainy days is June (13.1 days).
Average snowfall in May
Höfn, Iceland
- Average snowfall in May: 9mm
The month with the highest snowfall is February (133mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Höfn, Iceland
- Average snowfall days in May: 2.3 days
The month with the highest number of snowfall days is March (11.2 days).
The months with the least snowfall days are July, August and September (0 days).
Average sea temperature in May
Höfn, Iceland
- Average sea temperature in May: 7.3°C
The best month for swimming (with the highest average sea temperature) is August (10.5°C).
The coldest months (with the lowest average sea temperature) are January and March (5.8°C).
Average daylight in May /
Average sunshine in May
Höfn, Iceland
- Average daylight in May: 18h and 30min
The month with the longest days is June (Average daylight: 20h and 54min).
The month with the shortest days is December (Average daylight: 4h and 18min).
- Average sunshine in May: 8h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 2h and 48min).
Average sunshine days in May
Höfn, Iceland
- Average sunshine days in May: 12.1 days
The month with the most sunshine days is June (13.3 days).
The month with the least sunshine days is March (6.7 days).
Average UV index in May
Höfn, Iceland
- Average UV index in May: 2
The months with the highest UV index are June, July and August (UV index 3).
The months with the lowest UV index are January, February, March, April, May, September, October, November and December (UV index 2).
Average cloud cover in May
Höfn, Iceland
- Average cloud cover in May: 55
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is December (Cloud cover 54).
Average visibility in May
Höfn, Iceland
- Average visibility in May: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
