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
Saint Johns registers an average high-temperature of a fresh 11.6°C (52.9°F) at the commencement of May, closely related to the preceding month. Saint Johns, during the nights of May, averages a temperature close to its daytime high, at a frosty 9.1°C (48.4°F).Humidity
In Saint Johns, Isle of Man, the average relative humidity in May is 81%.Rainfall
April and May are months with the least rain in Saint Johns when the rain falls for 12.6 days and typically aggregates up to 24mm (0.94") of rain.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in May is 16h and 2min.On the first day of May, sunrise is at 05:39 and sunset at 20:50. On the last day of the month, sunrise is at 04:51 and sunset at 21:39 BST.
Sunshine
With an average of 8.2h of sunshine, May has the most sunshine of the year in Saint Johns.UV index
The months with the highest UV index in Saint Johns are May through September, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: In May, a regular UV index of 4 translates into these guidelines:
Make use of precautions - Suggestions to resist sunburn are communicated. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
What is the usual temperature for Saint Johns in May?
What is the average humidity in May in Saint Johns?
What is the driest month in Saint Johns?
How much does it rain in Saint Johns in May?
When it does not snow in Saint Johns?
Does it snow in Saint Johns in May?
What is the average length of the day in May in Saint Johns?
What time are sunrise and sunset in May in Saint Johns?
What month has the most sunshine in Saint Johns?
How many hours of sunshine does Saint Johns have in May?
What are the months with the highest UV index in Saint Johns?
What is the UV index intensity in May in Saint Johns?
Average temperature in May
Saint Johns, Isle of Man
- Average high temperature in May: 11.6°C
The warmest month (with the highest average high temperature) is August (15.9°C).
The month with the lowest average high temperature is February (7.4°C).
- Average low temperature in May: 9.1°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is February (5.2°C).
Average pressure in May
Saint Johns, Isle of Man
- Average pressure in May: 1015.9mbar
The month with the highest atmospheric pressure is May (1015.9mbar).
The month with the lowest atmospheric pressure is November (1007.9mbar).
Average wind speed in May
Saint Johns, Isle of Man
- Average wind speed in May: 23km/h
The windiest month (with the highest average wind speed) is December (34.4km/h).
The calmest month (with the lowest average wind speed) is June (19.7km/h).
Average humidity in May
Saint Johns, Isle of Man
- Average humidity in May: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is November (77%).
Average rainfall in May
Saint Johns, Isle of Man
- Average rainfall in May: 24mm
The wettest month (with the highest rainfall) is November (63mm).
The driest months (with the least rainfall) are April and May (24mm).
Average rainfall days in May
Saint Johns, Isle of Man
- Average rainfall days in May: 12.6 days
The month with the highest number of rainy days is November (19.6 days).
The month with the least rainy days is February (12.5 days).
Average snowfall in May
Saint Johns, Isle of Man
- Average snowfall in May: 0mm
The month with the highest snowfall is March (16mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in May
Saint Johns, Isle of Man
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (1.3 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
Saint Johns, Isle of Man
- Average daylight in May: 16h and 0min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in May: 8h and 1min
The month with the most sunshine is May (Average sunshine: 8h and 12min).
The months with the least sunshine are January and November (Average sunshine: 3h and 48min).
Average sunshine days in May
Saint Johns, Isle of Man
- Average sunshine days in May: 16.6 days
The month with the most sunshine days is May (16.6 days).
The month with the least sunshine days is November (7.5 days).
Average UV index in May
Saint Johns, Isle of Man
- Average UV index in May: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February and March (UV index 2).
Average cloud cover in May
Saint Johns, Isle of Man
- Average cloud cover in May: 46
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is May (Cloud cover 46).
Average visibility in May
Saint Johns, Isle of Man
- Average visibility in May: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
Saint Johns, Isle of Man
Weather forecast for your location
2. Allow the app to use your location
