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
May
Weather in May
Temperature
The dawn of May sees an average high-temperature of a moderate 13.6°C (56.5°F), subtly contrasting with April's 11.3°C (52.3°F). The nighttime temperature in Gretna Green, during May, averages of 5.6°C (42.1°F).Humidity
The average relative humidity in May is 83%.Rainfall
In Gretna Green, in May, during 15.9 rainfall days, 28mm (1.1") of precipitation is typically accumulated. Throughout the year, there are 204.6 rainfall days, and 478mm (18.82") of precipitation is accumulated.Snowfall
May through November are months without snowfall in Gretna Green.Daylight
In Gretna Green, the average length of the day in May is 16h and 10min.On the first day of the month, sunrise is at 5:30 am and sunset at 8:48 pm. On the last day of May, in Gretna Green, sunrise is at 4:40 am and sunset at 9:39 pm BST.
Sunshine
With an average of 7.5h of sunshine, May has the most sunshine of the year.UV index
May through August, with an average maximum UV index of 4, are months with the highest UV index in Gretna Green. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In May, the maximum UV index of 4 suggests this advice:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Gretna Green in May?
What is the average humidity in May in Gretna Green?
How much does it rain in Gretna Green in May?
When it does not snow in Gretna Green?
Does it snow in Gretna Green in May?
How many hours of daylight does Gretna Green have in May?
What time are sunrise and sunset in May in Gretna Green?
What month has the most sunshine in Gretna Green?
How long on average sun shines in May in Gretna Green?
When is the highest UV index in Gretna Green?
What is the UV index intensity in May in Gretna Green?
Average temperature in May
Gretna Green, United Kingdom
- Average high temperature in May: 13.6°C
The warmest month (with the highest average high temperature) is July (17.5°C).
The month with the lowest average high temperature is January (5.2°C).
- Average low temperature in May: 5.6°C
The month with the highest average low temperature is August (10.3°C).
The coldest months (with the lowest average low temperature) are January and February (1.3°C).
Average pressure in May
Gretna Green, United Kingdom
- Average pressure in May: 1015.8mbar
The month with the highest atmospheric pressure is May (1015.8mbar).
The month with the lowest atmospheric pressure is November (1007.7mbar).
Average wind speed in May
Gretna Green, United Kingdom
- Average wind speed in May: 14.7km/h
The windiest month (with the highest average wind speed) is December (18.4km/h).
The calmest months (with the lowest average wind speed) are June and July (12.5km/h).
Average humidity in May
Gretna Green, United Kingdom
- Average humidity in May: 83%
The months with the highest relative humidity are January, November and December (89%).
The month with the lowest relative humidity is April (82%).
Average rainfall in May
Gretna Green, United Kingdom
- Average rainfall in May: 28mm
The wettest month (with the highest rainfall) is December (55mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in May
Gretna Green, United Kingdom
- Average rainfall days in May: 15.9 days
The month with the highest number of rainy days is August (19.9 days).
The month with the least rainy days is April (13.3 days).
Average snowfall in May
Gretna Green, United Kingdom
- Average snowfall in May: 0mm
The month with the highest snowfall is January (22mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Gretna Green, United Kingdom
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (2.7 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Gretna Green, United Kingdom
- Average daylight in May: 16h and 1min
The month with the longest days is June (Average daylight: 17h and 18min).
The month with the shortest days is December (Average daylight: 7h and 18min).
- Average sunshine in May: 7h and 3min
The month with the most sunshine is May (Average sunshine: 7h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in May
Gretna Green, United Kingdom
- Average sunshine days in May: 11.2 days
The month with the most sunshine days is April (13 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in May
Gretna Green, United Kingdom
- Average UV index in May: 4
The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Gretna Green, United Kingdom
- Average cloud cover in May: 52
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is April (Cloud cover 51).
Average visibility in May
Gretna Green, United Kingdom
- Average visibility in May: 9km
The months with the highest visibility are January, February, March, April, May, October, November and December (9km).
The months with the lowest visibility are June, July, August and September (8km).
