May weather forecastHesteyri, Iceland
May
Weather in May
May, the last month of the spring in Hesteyri, is also an icy month, with an average temperature fluctuating between 4.5°C (40.1°F) and 1.9°C (35.4°F).Temperature
Hesteyri indicates an average high-temperature of a still wintry 4.5°C (40.1°F) in May, showing minor variation from April's 1.9°C (35.4°F). An average low-temperature of 1.9°C (35.4°F) characterizes Hesteyri's May nights.Humidity
The months with the lowest humidity are May and June, with an average relative humidity of 82%.Rainfall
In Hesteyri, during May, the rain falls for 15.3 days and regularly aggregates up to 51mm (2.01") of precipitation. Throughout the year, there are 169 rainfall days, and 830mm (32.68") of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In Hesteyri, in May, during 6.3 snowfall days, 43mm (1.69") of snow is typically accumulated. Throughout the year, there are 95.9 snowfall days, and 999mm (39.33") of snow is accumulated.Daylight
With an average of 19h and 36min of daylight, May has the longest days of the year in Hesteyri.On the first day of May, sunrise is at 04:42 and sunset at 22:14. On the last day of the month, sunrise is at 02:31 and sunset at 00:26 GMT.
Sunshine
The average sunshine in May is 5.6h.UV index
The average daily maximum UV index in May is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: The UV index of 2 during May translates into the following guidance:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Hesteyri, Iceland
- Average high temperature in May: 4.5°C
The warmest month (with the highest average high temperature) is July (9.5°C).
The month with the lowest average high temperature is March (-0.2°C).
- Average low temperature in May: 1.9°C
The month with the highest average low temperature is July (6.8°C).
The coldest month (with the lowest average low temperature) is March (-3°C).
Average pressure in May
Hesteyri, Iceland
- Average pressure in May: 1013.2mbar
The month with the highest atmospheric pressure is June (1014.8mbar).
The month with the lowest atmospheric pressure is January (997.4mbar).
Average wind speed in May
Hesteyri, Iceland
- Average wind speed in May: 20.4km/h
The windiest month (with the highest average wind speed) is December (29.6km/h).
The calmest month (with the lowest average wind speed) is June (15.7km/h).
Average humidity in May
Hesteyri, Iceland
- Average humidity in May: 82%
The months with the highest relative humidity are January, February, August, September and October (85%).
The months with the lowest relative humidity are May and June (82%).
Average rainfall in May
Hesteyri, Iceland
- Average rainfall in May: 51mm
The wettest month (with the highest rainfall) is January (101mm).
The driest month (with the least rainfall) is June (34mm).
Average rainfall days in May
Hesteyri, Iceland
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is September (21.7 days).
The month with the least rainy days is February (8.5 days).
Average snowfall in May
Hesteyri, Iceland
- Average snowfall in May: 43mm
The month with the highest snowfall is March (203mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in May
Hesteyri, Iceland
- Average snowfall days in May: 6.3 days
The month with the highest number of snowfall days is March (18 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Hesteyri, Iceland
- Average daylight in May: 19h and 36min
The month with the longest days is May (Average daylight: 19h and 36min).
The month with the shortest days is December (Average daylight: 2h and 54min).
- Average sunshine in May: 5h and 36min
The month with the most sunshine is August (Average sunshine: 6h and 30min).
The month with the least sunshine is June (Average sunshine: 0h and 24min).
Average sunshine days in May
Hesteyri, Iceland
- Average sunshine days in May: 8.8 days
The month with the most sunshine days is June (13.9 days).
The month with the least sunshine days is March (3.5 days).
Average UV index in May
Hesteyri, Iceland
- Average UV index in May: 2
The months with the highest UV index are June and July (UV index 3).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover in May
Hesteyri, Iceland
- Average cloud cover in May: 65
The month with the most cloud cover is March (Cloud cover 79).
The month with the least cloud cover is June (Cloud cover 61).
Average visibility in May
Hesteyri, Iceland
- Average visibility in May: 9km
The months with the highest visibility are May, June, July, August and September (9km).
The month with the lowest visibility is March (7km).
