Weather in May
Temperature
May's presence records an average high-temperature of a still fresh 12°C (53.6°F), closely mirroring April's climate. Isle of Lewis observes an average nighttime low-temperature of 6°C (42.8°F) during the month of May.Rainfall
May is the month with the least rainfall, with 62mm (2.44") of accumulated precipitation.Sea temperature
In Isle of Lewis, the average seawater temperature in May is 9.5°C (49.1°F).Note: You can swim in 9.5°C (49.1°F) below 10°C (50°F) with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. A short span at 13°C (55.4°F) without it is tough.
Daylight
The average length of the day in May in Isle of Lewis, United Kingdom, is 16h and 47min.On the first day of the month, sunrise is at 5:31 am and sunset at 9:16 pm. On the last day of May, in Isle of Lewis, sunrise is at 4:31 am and sunset at 10:17 pm BST.
Sunshine
With an average of 6.2h of sunshine, May has the most sunshine of the year.Frequently asked questions
What is the average May temperature in Isle of Lewis?
What is the driest month in Isle of Lewis?
How much does it rain in Isle of Lewis in May?
How cold is the water in May in Isle of Lewis?
What is the average length of the day in May in Isle of Lewis?
What time are sunrise and sunset in May in Isle of Lewis?
What month has the most sunshine in Isle of Lewis?
How long on average sun shines in May in Isle of Lewis?
Average temperature in May
Isle of Lewis, United Kingdom
- Average high temperature in May: 12°C
The warmest months (with the highest average high temperature) are July and August (16°C).
The months with the lowest average high temperature are January, February and December (7°C).
- Average low temperature in May: 6°C
The months with the highest average low temperature are July and August (10°C).
The coldest months (with the lowest average low temperature) are January, February, March and December (2°C).
Average rainfall in May
Isle of Lewis, United Kingdom
- Average rainfall in May: 61.9mm
The wettest month (with the highest rainfall) is December (135.8mm).
The driest month (with the least rainfall) is May (61.9mm).
Average sea temperature in May
Isle of Lewis, United Kingdom
- Average sea temperature in May: 9.5°C
The best month for swimming (with the highest average sea temperature) is August (13.3°C).
The coldest month (with the lowest average sea temperature) is March (7.6°C).
Average daylight in May /
Average sunshine in May
Isle of Lewis, United Kingdom
- Average daylight in May: 16h and 5min
The month with the longest days is June (Average daylight: 18h and 6min).
The month with the shortest days is December (Average daylight: 6h and 30min).
- Average sunshine in May: 6h and 1min
The month with the most sunshine is May (Average sunshine: 6h and 12min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).
Isle of Lewis, United Kingdom
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