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 sea temperature 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
Entering May, Reykjavík notices a subtle temperature elevation, with the average high-temperature advancing from April's icy 4.9°C (40.8°F) to a chilly 8.3°C (46.9°F). Nighttime temperatures hover around an average low of 4.1°C (39.4°F) in May, a slight descent from daytime highs.Humidity
With an average relative humidity of 75%, May is the least humid month.Rainfall
In Reykjavík, Iceland, in May, it is raining for 15.5 days, with typically 32mm (1.26") of accumulated precipitation. Throughout the year, in Reykjavík, there are 166.2 rainfall days, and 416mm (16.38") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 1.2 snowfall days, in May, Reykjavík aggregates 2mm (0.08") of snow. In Reykjavík, during the entire year, snow falls for 41.1 days and aggregates up to 309mm (12.17") of snow.Sea temperature
In Reykjavík, Iceland, the average seawater temperature in May is 7.2°C (45°F).Note: Swimming at temperatures less than 10°C (50°F) in 7.2°C (45°F) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 13°C (55.4°F) without adequate warmth can be discomforting.
Daylight
In Reykjavík, the average length of the day in May is 18h and 29min.On the first day of May in Reykjavík, Iceland, sunrise is at 04:56 and sunset at 21:51. On the last day of the month, sunrise is at 03:22 and sunset at 23:27 GMT.
Sunshine
In May, the average sunshine in Reykjavík is 7h.UV index
In Reykjavík, the average daily maximum UV index in May is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 2 during May leads to these instructions:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
What are the temperatures in Reykjavík in May?
What is the least humid month in Reykjavík?
What is the average humidity in May in Reykjavík?
How many days does it rain in May in Reykjavík?
What is the last month it snows in Reykjavík?
How cold is the water in May in Reykjavík?
How many hours of daylight does Reykjavík have in May?
What time are sunrise and sunset in May in Reykjavík?
How long on average sun shines in May in Reykjavík?
What is the UV index reading in May in Reykjavík?
Average temperature in May
Reykjavík, Iceland
- Average high temperature in May: 8.3°C
The warmest month (with the highest average high temperature) is July (13.5°C).
The month with the lowest average high temperature is December (1.3°C).
- Average low temperature in May: 4.1°C
The month with the highest average low temperature is July (9.1°C).
The coldest month (with the lowest average low temperature) is December (-2.4°C).
Average pressure in May
Reykjavík, 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 (996.6mbar).
Average wind speed in May
Reykjavík, Iceland
- Average wind speed in May: 19.1km/h
The windiest month (with the highest average wind speed) is February (24.9km/h).
The calmest months (with the lowest average wind speed) are June and July (14.9km/h).
Average humidity in May
Reykjavík, Iceland
- Average humidity in May: 75%
The months with the highest relative humidity are January, February and September (82%).
The month with the lowest relative humidity is May (75%).
Average rainfall in May
Reykjavík, Iceland
- Average rainfall in May: 32mm
The wettest month (with the highest rainfall) is January (47mm).
The driest months (with the least rainfall) are June and July (25mm).
Average rainfall days in May
Reykjavík, Iceland
- Average rainfall days in May: 15.5 days
The month with the highest number of rainy days is September (17.8 days).
The month with the least rainy days is December (9.7 days).
Average snowfall in May
Reykjavík, Iceland
- Average snowfall in May: 2mm
The month with the highest snowfall is March (100mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Reykjavík, Iceland
- Average snowfall days in May: 1.2 days
The month with the highest number of snowfall days is March (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in May
Reykjavík, Iceland
- Average sea temperature in May: 7.2°C
The best month for swimming (with the highest average sea temperature) is July (11.4°C).
The coldest month (with the lowest average sea temperature) is March (5.1°C).
Average daylight in May /
Average sunshine in May
Reykjavík, Iceland
- Average daylight in May: 18h and 3min
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 24min).
- Average sunshine in May: 7h and 0min
The month with the most sunshine is August (Average sunshine: 7h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in May
Reykjavík, Iceland
- Average sunshine days in May: 10.4 days
The month with the most sunshine days is December (14.1 days).
The month with the least sunshine days is September (8.8 days).
Average UV index in May
Reykjavík, 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 and November (UV index 1).
Average cloud cover in May
Reykjavík, Iceland
- Average cloud cover in May: 62
The months with the most cloud cover are March and April (Cloud cover 68).
The months with the least cloud cover are August and December (Cloud cover 60).
Average visibility in May
Reykjavík, 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).
Reykjavík, Iceland
Weather forecast for your location
2. Allow the app to use your location
