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
Weather in May
Temperature
As May takes its course, Bolton's average high-temperature registers at a moderate 15°C (59°F), closely aligning with the preceding month. Bolton records an average low of 6.9°C (44.4°F) throughout the nights in May.Humidity
May is the least humid month in Bolton, with an average relative humidity of 78%.Rainfall
In Bolton, during May, the rain falls for 14.4 days and regularly aggregates up to 18mm (0.71") of precipitation. Throughout the year, there are 184 rainfall days, and 389mm (15.31") of precipitation is accumulated.Snowfall
In Bolton, snow does not fall in May through November.Daylight
The average length of the day in May in Bolton is 15h and 56min.On the first day of May, sunrise is at 5:33 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 4:47 am and sunset at 9:27 pm BST.
Sunshine
April and May, with an average of 7h of sunshine, are months with the most sunshine.UV index
May through August, with an average maximum UV index of 4, are months with the highest UV index in Bolton. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: An average maximum UV index of 4 in May leads to these recommendations:
Undertake protective steps - Preventing sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Experience reduced UV exposure by about half when donning a wide-brim hat.
Frequently asked questions
What are the temperatures in Bolton in May?
What is the least humid month in Bolton?
What is the average humidity in May in Bolton?
How many days does it rain in May in Bolton?
When it does not snow in Bolton?
Does it snow in Bolton in May?
What is the average length of the day in May in Bolton?
When is the sunrise / sunset in May in Bolton?
What are the months with the most sunshine in Bolton?
How long on average sun shines in May in Bolton?
When is the highest UV index in Bolton?
How high is the UV index in May in Bolton?
Average temperature in May
Bolton, United Kingdom
- Average high temperature in May: 15°C
The warmest month (with the highest average high temperature) is July (19.4°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in May: 6.9°C
The month with the highest average low temperature is August (12°C).
The coldest months (with the lowest average low temperature) are January and February (1.8°C).
Average pressure in May
Bolton, United Kingdom
- Average pressure in May: 1016.2mbar
The month with the highest atmospheric pressure is May (1016.2mbar).
The month with the lowest atmospheric pressure is November (1008.9mbar).
Average wind speed in May
Bolton, United Kingdom
- Average wind speed in May: 14.1km/h
The windiest month (with the highest average wind speed) is February (17.4km/h).
The calmest month (with the lowest average wind speed) is June (12.3km/h).
Average humidity in May
Bolton, United Kingdom
- Average humidity in May: 78%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is May (78%).
Average rainfall in May
Bolton, United Kingdom
- Average rainfall in May: 18mm
The wettest month (with the highest rainfall) is August (48mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days in May
Bolton, United Kingdom
- Average rainfall days in May: 14.4 days
The month with the highest number of rainy days is August (18.8 days).
The month with the least rainy days is April (12.3 days).
Average snowfall in May
Bolton, United Kingdom
- Average snowfall in May: 0mm
The month with the highest snowfall is January (29mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Bolton, United Kingdom
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Bolton, United Kingdom
- Average daylight in May: 15h and 5min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in May: 7h and 0min
The months with the most sunshine are April and May (Average sunshine: 7h and 0min).
The months with the least sunshine are January and February (Average sunshine: 3h and 30min).
Average sunshine days in May
Bolton, United Kingdom
- Average sunshine days in May: 12.8 days
The month with the most sunshine days is March (14.3 days).
The month with the least sunshine days is August (7.6 days).
Average UV index in May
Bolton, 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
Bolton, United Kingdom
- Average cloud cover in May: 54
The months with the most cloud cover are January and December (Cloud cover 66).
The month with the least cloud cover is April (Cloud cover 53).
Average visibility in May
Bolton, United Kingdom
- Average visibility in May: 9km
The months with the highest visibility are February, March, April, May, June, August, October and November (9km).
The months with the lowest visibility are January, July, September and December (8km).
Bolton, United Kingdom
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