May weather forecastJohnstone, United Kingdom
May
Weather in May
May, the last month of the spring in Johnstone, is another cool month, with an average temperature ranging between min 5.8°C (42.4°F) and max 12.9°C (55.2°F).Temperature
Johnstone's transition from April to May introduces an average high-temperature of a still fresh 12.9°C (55.2°F), marking an insignificant variation from the 10.5°C (50.9°F). During May, Johnstone records an average temperature of 5.8°C (42.4°F) at night.Humidity
April and May, with an average relative humidity of 83%, are the least humid months.Rainfall
In Johnstone, in May, it is raining for 21.5 days, with typically 60mm (2.36") of accumulated precipitation. Throughout the year, in Johnstone, there are 259.2 rainfall days, and 976mm (38.43") of precipitation is accumulated.Snowfall
In Johnstone, United Kingdom, snow does not fall in May through October.Daylight
In May, the average length of the day in Johnstone is 16h and 19min.On the first day of the month, sunrise is at 5:32 am and sunset at 8:57 pm. On the last day of May, sunrise is at 4:41 am and sunset at 9:50 pm BST.
Sunshine
The average sunshine in May is 6.6h.UV index
May through July, with an average maximum UV index of 4, are months with the highest UV index in Johnstone. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 4 during May translates into these guidelines:
Adopt protective measures - Suggestions to resist sunburn are offered. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Johnstone, United Kingdom
- Average high temperature in May: 12.9°C
The warmest month (with the highest average high temperature) is July (16.7°C).
The month with the lowest average high temperature is January (4.9°C).
- Average low temperature in May: 5.8°C
The month with the highest average low temperature is July (10.1°C).
The coldest month (with the lowest average low temperature) is January (1.4°C).
Average pressure in May
Johnstone, United Kingdom
- Average pressure in May: 1015.3mbar
The month with the highest atmospheric pressure is May (1015.3mbar).
The month with the lowest atmospheric pressure is November (1006.8mbar).
Average wind speed in May
Johnstone, United Kingdom
- Average wind speed in May: 14.6km/h
The windiest month (with the highest average wind speed) is January (18.9km/h).
The calmest months (with the lowest average wind speed) are June and July (12.2km/h).
Average humidity in May
Johnstone, United Kingdom
- Average humidity in May: 83%
The months with the highest relative humidity are January, September, October, November and December (89%).
The months with the lowest relative humidity are April and May (83%).
Average rainfall in May
Johnstone, United Kingdom
- Average rainfall in May: 60mm
The wettest month (with the highest rainfall) is August (110mm).
The driest month (with the least rainfall) is April (44mm).
Average rainfall days in May
Johnstone, United Kingdom
- Average rainfall days in May: 21.5 days
The month with the highest number of rainy days is August (26.5 days).
The month with the least rainy days is February (18.3 days).
Average snowfall in May
Johnstone, United Kingdom
- Average snowfall in May: 0mm
The month with the highest snowfall is February (67mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in May
Johnstone, United Kingdom
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (4.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Johnstone, United Kingdom
- Average daylight in May: 16h and 18min
The month with the longest days is June (Average daylight: 17h and 30min).
The month with the shortest days is December (Average daylight: 7h and 6min).
- Average sunshine in May: 6h and 36min
The month with the most sunshine is June (Average sunshine: 7h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days in May
Johnstone, United Kingdom
- Average sunshine days in May: 6.5 days
The month with the most sunshine days is April (9.2 days).
The month with the least sunshine days is August (2.8 days).
Average UV index in May
Johnstone, United Kingdom
- Average UV index in May: 4
The months with the highest UV index are May, June and July (UV index 4).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Johnstone, United Kingdom
- Average cloud cover in May: 57
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is April (Cloud cover 56).
Average visibility in May
Johnstone, United Kingdom
- Average visibility in May: 9km
The months with the highest visibility are February, March, April, May and November (9km).
The months with the lowest visibility are January, June, July, August, September, October and December (8km).
