May weather forecast
Blönduós, Iceland

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Weather in May

May marks a definitive shift towards spring, with the average temperature highs now entering positive territory at 6.8°C (44.2°F). A substantial reduction in snowfall, now measuring only 20mm (0.79"), further solidifies the advent of warmer weather in Blönduós. Spring flora is now more visible, and the city comes alive with vibrant natural colours. The spring season also brings a significant increase in the number of daylight hours, presenting more opportunities for outdoor activities. Despite milder weather, May still remains quite windy, reminding everyone that the Icelandic climates are unpredictable and can swiftly change.

Temperature

May's arrival signals a modest temperature shift, moving from an icy 3°C (37.4°F) in April to a frosty 6.8°C (44.2°F). Blönduós nights in May witness a mild cool down to an average temperature of 2.6°C (36.7°F).

Humidity

The months with the lowest humidity are May and June, with an average relative humidity of 75%.

Rainfall

In Blönduós, in May, it is raining for 10.6 days, with typically 19mm (0.75") of accumulated precipitation. Throughout the year, there are 116.7 rainfall days, and 320mm (12.6") of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall in Blönduós, Iceland. In Blönduós, during May, snow falls for 3.6 days and regularly aggregates up to 20mm (0.79") of snow. Throughout the year, in Blönduós, there are 68.5 snowfall days, and 512mm (20.16") of snow is accumulated.

Daylight

In May, the average length of the day is 19h and 11min.
On the first day of May, sunrise is at 04:38 and sunset at 21:58. On the last day of the month, sunrise is at 02:43 and sunset at 23:54 GMT.

Sunshine

With an average of 8h of sunshine, May has the most sunshine of the year in Blönduós.

UV index

May through July, with an average maximum UV index of 3, are months with the highest UV index in Blönduós. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 3 during May translates into the following directions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.

Frequently asked questions

How cold is it in Blönduós in May?

The high-temperature in Blönduós, Iceland, during May is 6.8°C (44.2°F) and the low-temperature is 2.6°C (36.7°F).

What are the least humid months in Blönduós?

May and June, with an average relative humidity of 75%, are the least humid months in Blönduós.

What is the average humidity in May in Blönduós?

The average relative humidity in May in Blönduós, Iceland, is 75%.

How much does it rain in Blönduós in May?

In Blönduós, in May, during 10.6 rainfall days, 19mm (0.75") of precipitation is typically accumulated.

How many days does it snow in May in Blönduós?

In Blönduós, Iceland, in May, during 3.6 snowfall days, 20mm (0.79") of snow is typically accumulated.

How many hours of daylight does Blönduós have in May?

The average day length in May in Blönduós, Iceland, is 19h and 11min.

When is the sunrise / sunset in May in Blönduós?

In May, on the first day of the month, sunrise is at 04:38 and sunset at 21:58. On the last day of the month, sunrise is at 02:43 and sunset at 23:54 GMT.

What month has the most sunshine in Blönduós?

The month with the most sunshine is May, with an average of 8h of sunshine.

How many hours of sunshine does Blönduós have in May?

In Blönduós, Iceland, the average sunshine duration in May is 8h.

What is the month with the highest UV index in Blönduós?

May through July, with an average maximum UV index of 3, are months with the highest UV index.

How high is the UV index in May in Blönduós?

The average daily maximum UV index in May in Blönduós is 3. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in May
Blönduós, Iceland

Average temperature in May - Blönduós, Iceland
  • Average high temperature in May: 6.8°C

The warmest month (with the highest average high temperature) is July (11.8°C).
The month with the lowest average high temperature is December (-0.5°C).

  • Average low temperature in May: 2.6°C

The month with the highest average low temperature is July (7.4°C).
The coldest month (with the lowest average low temperature) is December (-4°C).

Average pressure in May
Blönduós, Iceland

Average pressure in May - Blönduós, Iceland
  • Average pressure in May: 1013mbar

The month with the highest atmospheric pressure is June (1014.4mbar).
The month with the lowest atmospheric pressure is January (998mbar).

Average wind speed in May
Blönduós, Iceland

Average wind speed in May - Blönduós, Iceland
  • Average wind speed in May: 17.1km/h

The windiest month (with the highest average wind speed) is December (22km/h).
The calmest month (with the lowest average wind speed) is July (13.9km/h).

Average humidity in May
Blönduós, Iceland

Average humidity in May - Blönduós, Iceland
  • Average humidity in May: 75%

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are May and June (75%).

Average rainfall in May
Blönduós, Iceland

Average rainfall in May - Blönduós, Iceland
  • Average rainfall in May: 19mm

The wettest month (with the highest rainfall) is September (43mm).
The driest month (with the least rainfall) is June (15mm).

Average rainfall days in May
Blönduós, Iceland

Average rainfall days in May - Blönduós, Iceland
  • Average rainfall days in May: 10.6 days

The month with the highest number of rainy days is September (14.3 days).
The month with the least rainy days is February (5.6 days).

Average snowfall in May
Blönduós, Iceland

Average snowfall in May - Blönduós, Iceland
  • Average snowfall in May: 20mm

The month with the highest snowfall is January (106mm).
The months with the least snowfall are July and August (0mm).

Average snowfall days in May
Blönduós, Iceland

Average snowfall days in May - Blönduós, Iceland
  • Average snowfall days in May: 3.6 days

The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are July and August (0.1 days).

Average daylight in May /
Average sunshine in May
Blönduós, Iceland

Average daylight in May / Average sunshine in May - Blönduós, Iceland
  • Average daylight in May: 19h and 1min

The month with the longest days is June (Average daylight: 22h and 42min).
The month with the shortest days is December (Average daylight: 3h and 24min).

  • Average sunshine in May: 8h and 0min

The month with the most sunshine is May (Average sunshine: 8h and 0min).
The month with the least sunshine is June (Average sunshine: 0h and 42min).

Average sunshine days in May
Blönduós, Iceland

Average sunshine days in May - Blönduós, Iceland
  • Average sunshine days in May: 15.4 days

The month with the most sunshine days is June (15.8 days).
The month with the least sunshine days is April (11.8 days).

Average UV index in May
Blönduós, Iceland

Average UV index in May - Blönduós, Iceland
  • Average UV index in May: 3

The months with the highest UV index are May, June and July (UV index 3).
The months with the lowest UV index are March, October, November and December (UV index 1).

Average cloud cover in May
Blönduós, Iceland

Average cloud cover in May - Blönduós, Iceland
  • Average cloud cover in May: 59

The month with the most cloud cover is March (Cloud cover 67).
The month with the least cloud cover is June (Cloud cover 55).

Average visibility in May
Blönduós, Iceland

Average visibility in May - Blönduós, Iceland
  • Average visibility in May: 9km

The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).

Blönduós, Iceland

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