May weather forecastLerwick, United Kingdom
May
Weather in May
May, the last month of the spring in Lerwick, is also a frosty month, with temperature in the range of an average high of 9.5°C (49.1°F) and an average low of 7.6°C (45.7°F).Temperature
May records an average high-temperature of a still chilly 9.5°C (49.1°F), indicating a minor variation from the preceding month. Lerwick's nighttime average temperature in May drops marginally from the daytime highs, settling at a still chilly 7.6°C (45.7°F).Humidity
In Lerwick, the average relative humidity in May is 81%.Rainfall
In Lerwick, United Kingdom, during May, the rain falls for 17.3 days and regularly aggregates up to 42mm (1.65") of precipitation. Throughout the year, there are 250.8 rainfall days, and 719mm (28.31") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. May is the last month it regularly snows in Lerwick. During 0.3 snowfall days, in May, Lerwick aggregates 1mm (0.04") of snow. Throughout the year, there are 9.3 snowfall days, and 47mm (1.85") of snow is accumulated.Sea temperature
In Lerwick, the average seawater temperature in May is 9.3°C (48.7°F).Note: Beware when you're in 9.3°C (48.7°F) waters; 13°C (55.4°F) is chilling and anything below 10°C (50°F) could cause breathing hindrance and a sudden cold shock, given your physical condition.
Daylight
The average length of the day in May is 17h and 14min.On the first day of May in Lerwick, sunrise is at 4:59 am and sunset at 9:03 pm. On the last day of the month, sunrise is at 3:52 am and sunset at 10:12 pm BST.
Sunshine
The average sunshine in May in Lerwick is 7.7h.UV index
In May, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, the UV index of 3 transforms into the following advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Lerwick, United Kingdom
- Average high temperature in May: 9.5°C
The warmest month (with the highest average high temperature) is August (14°C).
The month with the lowest average high temperature is February (6.8°C).
- Average low temperature in May: 7.6°C
The month with the highest average low temperature is August (12.4°C).
The coldest month (with the lowest average low temperature) is February (4.9°C).
Average pressure in May
Lerwick, United Kingdom
- Average pressure in May: 1014.3mbar
The months with the highest atmospheric pressure are May and June (1014.3mbar).
The month with the lowest atmospheric pressure is December (1002.5mbar).
Average wind speed in May
Lerwick, United Kingdom
- Average wind speed in May: 24.6km/h
The windiest month (with the highest average wind speed) is January (38.7km/h).
The calmest month (with the lowest average wind speed) is July (22.5km/h).
Average humidity in May
Lerwick, United Kingdom
- Average humidity in May: 81%
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is December (75%).
Average rainfall in May
Lerwick, United Kingdom
- Average rainfall in May: 42mm
The wettest month (with the highest rainfall) is December (90mm).
The driest month (with the least rainfall) is June (32mm).
Average rainfall days in May
Lerwick, United Kingdom
- Average rainfall days in May: 17.3 days
The month with the highest number of rainy days is December (25.8 days).
The month with the least rainy days is June (14.8 days).
Average snowfall in May
Lerwick, United Kingdom
- Average snowfall in May: 1mm
The month with the highest snowfall is February (12mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in May
Lerwick, United Kingdom
- Average snowfall days in May: 0.3 days
The months with the highest number of snowfall days are February and March (2.2 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average sea temperature in May
Lerwick, United Kingdom
- Average sea temperature in May: 9.3°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 (7.8°C).
Average daylight in May /
Average sunshine in May
Lerwick, United Kingdom
- Average daylight in May: 17h and 12min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in May: 7h and 42min
The month with the most sunshine is June (Average sunshine: 9h and 18min).
The month with the least sunshine is December (Average sunshine: 2h and 6min).
Average sunshine days in May
Lerwick, United Kingdom
- Average sunshine days in May: 11.6 days
The month with the most sunshine days is June (12.1 days).
The month with the least sunshine days is December (2.1 days).
Average UV index in May
Lerwick, United Kingdom
- Average UV index in May: 3
The months with the highest UV index are June and August (UV index 4).
The months with the lowest UV index are January, February, March, April, November and December (UV index 2).
Average cloud cover in May
Lerwick, United Kingdom
- Average cloud cover in May: 56
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is May (Cloud cover 56).
Average visibility in May
Lerwick, United Kingdom
- Average visibility in May: 10km
The months with the highest visibility are February, April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, March, November and December (9km).
