Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The ushering in of May brings an average high-temperature of a frosty 7.8°C (46°F), closely mirroring the 5.7°C (42.3°F) of April. Hafnir's nighttime temperature in May consistently rests at an icy 5.1°C (41.2°F).Humidity
In May, the average relative humidity is 77%.Rainfall
In May, in Hafnir, the rain falls for 16.4 days. Throughout May, 58mm (2.28") of precipitation is accumulated. Throughout the year, there are 193.9 rainfall days, and 833mm (32.8") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Hafnir aggregates 2mm (0.08") of snow. In Hafnir, during the entire year, snow falls for 33.4 days and aggregates up to 297mm (11.69") of snow.Daylight
The average length of the day in May in Hafnir is 18h and 25min.On the first day of May, sunrise is at 05:01 and sunset at 21:53. On the last day of the month, sunrise is at 03:29 and sunset at 23:27 GMT.
Sunshine
In Hafnir, the average sunshine in May is 7.4h.UV index
The months with the lowest UV index in Hafnir are January through May, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In May, the average maximum UV index of 2 translates into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Frequently asked questions
What are the temperatures in Hafnir in May?
What is the average humidity in May in Hafnir?
How many days does it rain in May in Hafnir?
What is the last month it snows in Hafnir?
How many hours of daylight does Hafnir have in May?
When are sunrise and sunset in May in Hafnir?
How many hours of sunshine does Hafnir have in May?
When is the lowest UV index in Hafnir?
What is the UV index intensity in May in Hafnir?
Average temperature in May
Hafnir, Iceland
- Average high temperature in May: 7.8°C
The warmest months (with the highest average high temperature) are July and August (12.2°C).
The months with the lowest average high temperature are February, March and December (4.2°C).
- Average low temperature in May: 5.1°C
The month with the highest average low temperature is July (9.9°C).
The coldest months (with the lowest average low temperature) are March and December (1.3°C).
Average pressure in May
Hafnir, Iceland
- Average pressure in May: 1011.9mbar
The month with the highest atmospheric pressure is June (1013.7mbar).
The month with the lowest atmospheric pressure is January (996.1mbar).
Average wind speed in May
Hafnir, Iceland
- Average wind speed in May: 24.8km/h
The windiest month (with the highest average wind speed) is February (35km/h).
The calmest month (with the lowest average wind speed) is June (20.1km/h).
Average humidity in May
Hafnir, Iceland
- Average humidity in May: 77%
The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is December (74%).
Average rainfall in May
Hafnir, Iceland
- Average rainfall in May: 58mm
The wettest month (with the highest rainfall) is January (99mm).
The driest month (with the least rainfall) is June (35mm).
Average rainfall days in May
Hafnir, Iceland
- Average rainfall days in May: 16.4 days
The month with the highest number of rainy days is September (19.9 days).
The month with the least rainy days is June (12.5 days).
Average snowfall in May
Hafnir, Iceland
- Average snowfall in May: 2mm
The month with the highest snowfall is March (75mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Hafnir, Iceland
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is March (8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Hafnir, Iceland
- Average daylight in May: 18h and 2min
The month with the longest days is June (Average daylight: 20h and 42min).
The month with the shortest days is December (Average daylight: 4h and 30min).
- Average sunshine in May: 7h and 2min
The month with the most sunshine is August (Average sunshine: 7h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in May
Hafnir, Iceland
- Average sunshine days in May: 12.4 days
The month with the most sunshine days is June (15 days).
The months with the least sunshine days are March and April (7.1 days).
Average UV index in May
Hafnir, Iceland
- Average UV index in May: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February, March, April, May, October, November and December (UV index 2).
Average cloud cover in May
Hafnir, Iceland
- Average cloud cover in May: 60
The month with the most cloud cover is March (Cloud cover 69).
The months with the least cloud cover are May, July and August (Cloud cover 60).
Average visibility in May
Hafnir, Iceland
- Average visibility in May: 9km
The months with the highest visibility are June and August (10km).
The months with the lowest visibility are January, February, March, April, May, July, September, October, November and December (9km).
Hafnir, Iceland
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