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
Selfoss observes a slight uplift in the average high-temperature with the onset of May, adjusting from April's cold 5.5°C (41.9°F) to a frosty 8.5°C (47.3°F). In Selfoss, the nocturnal temperatures throughout May show a marginal dip from the daytime averages, settling at a wintry 4.3°C (39.7°F).Humidity
The least humid month in Selfoss is May, with an average relative humidity of 74%.Rainfall
In Selfoss, in May, during 17.4 rainfall days, 63mm (2.48") of precipitation is typically accumulated. In Selfoss, during the entire year, the rain falls for 208.7 days and collects up to 1105mm (43.5") of precipitation.Snowfall
Months with snowfall in Selfoss are January through May, October through December. May is the last month it regularly snows in Selfoss. During 1.3 snowfall days, in May, Selfoss aggregates 10mm (0.39") of snow. In Selfoss, Iceland, during the entire year, snow falls for 61.9 days and aggregates up to 825mm (32.48") of snow.Daylight
The average length of the day in May in Selfoss is 18h and 25min.On the first day of May, sunrise is at 04:54 and sunset at 21:47. On the last day of the month, sunrise is at 03:22 and sunset at 23:20 GMT.
Sunshine
In Selfoss, the average sunshine in May is 7.6h.UV index
In May, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 3 during May leads to these instructions:
Act with care - The suggestion to avoid sunburn is emphasized. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Selfoss in May?
What is the least humid month in Selfoss?
What is the average humidity in May in Selfoss?
How much does it rain in Selfoss in May?
What is the last month it snows in Selfoss?
How many hours of daylight does Selfoss have in May?
When is the sunrise / sunset in May in Selfoss?
How long on average sun shines in May in Selfoss?
How high is the UV index in May in Selfoss?
Average temperature in May
Selfoss, Iceland
- Average high temperature in May: 8.5°C
The warmest month (with the highest average high temperature) is July (13.8°C).
The month with the lowest average high temperature is December (1.5°C).
- Average low temperature in May: 4.3°C
The month with the highest average low temperature is July (8.9°C).
The coldest month (with the lowest average low temperature) is December (-1.9°C).
Average pressure in May
Selfoss, Iceland
- Average pressure in May: 1012.1mbar
The month with the highest atmospheric pressure is June (1013.8mbar).
The month with the lowest atmospheric pressure is January (996.8mbar).
Average wind speed in May
Selfoss, Iceland
- Average wind speed in May: 19.5km/h
The windiest month (with the highest average wind speed) is February (24.8km/h).
The calmest month (with the lowest average wind speed) is July (14.7km/h).
Average humidity in May
Selfoss, Iceland
- Average humidity in May: 74%
The months with the highest relative humidity are January and September (82%).
The month with the lowest relative humidity is May (74%).
Average rainfall in May
Selfoss, Iceland
- Average rainfall in May: 63mm
The wettest month (with the highest rainfall) is January (142mm).
The driest month (with the least rainfall) is June (45mm).
Average rainfall days in May
Selfoss, Iceland
- Average rainfall days in May: 17.4 days
The month with the highest number of rainy days is April (19.9 days).
The month with the least rainy days is December (14.3 days).
Average snowfall in May
Selfoss, Iceland
- Average snowfall in May: 10mm
The month with the highest snowfall is March (220mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Selfoss, Iceland
- Average snowfall days in May: 1.3 days
The month with the highest number of snowfall days is March (13.3 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Selfoss, 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 4min
The month with the most sunshine is August (Average sunshine: 7h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in May
Selfoss, Iceland
- Average sunshine days in May: 11 days
The month with the most sunshine days is June (12.3 days).
The month with the least sunshine days is January (5.5 days).
Average UV index in May
Selfoss, Iceland
- Average UV index in May: 3
The month with the highest UV index is July (UV index 4).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in May
Selfoss, Iceland
- Average cloud cover in May: 59
The month with the most cloud cover is March (Cloud cover 67).
The months with the least cloud cover are May and August (Cloud cover 59).
Average visibility in May
Selfoss, Iceland
- Average visibility in May: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February and March (8km).
Selfoss, Iceland
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