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
The advent of May brings an average high-temperature of a refreshing 13°C (55.4°F), almost identical to the preceding month. Helston reports an average low temperature of 10.8°C (51.4°F) in May, a minor decrease from the day's highs.Humidity
In May, the average relative humidity in Helston is 83%.Rainfall
May is the month with the least rainfall. Rain falls for 13.6 days and accumulates 29mm (1.14") of precipitation.Snowfall
In Helston, snow does not fall in March through December.Daylight
In Helston, the average length of the day in May is 15h and 27min.On the first day of May, sunrise is at 5:55 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 5:16 am and sunset at 9:21 pm BST.
Sunshine
In May, the average sunshine is 8.4h.UV index
The average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: During May, 4 as the daily maximum UV index converts into the following advice:
Undertake precautions - Guarding against sun damage is counselled. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What is the temperature in May in Helston?
What is the average humidity in May in Helston?
What is the driest month in Helston?
How much does it rain in Helston in May?
When it does not snow in Helston?
How many hours of daylight does Helston have in May?
What time are sunrise and sunset in May in Helston?
How many hours of sunshine does Helston have in May?
What is the UV index intensity in May in Helston?
Average temperature in May
Helston, United Kingdom
- Average high temperature in May: 13°C
The warmest month (with the highest average high temperature) is August (17.4°C).
The month with the lowest average high temperature is February (9.3°C).
- Average low temperature in May: 10.8°C
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (7.1°C).
Average pressure in May
Helston, United Kingdom
- Average pressure in May: 1017.3mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1010.5mbar).
Average wind speed in May
Helston, United Kingdom
- Average wind speed in May: 21.6km/h
The windiest month (with the highest average wind speed) is December (32.9km/h).
The calmest month (with the lowest average wind speed) is July (20.8km/h).
Average humidity in May
Helston, United Kingdom
- Average humidity in May: 83%
The months with the highest relative humidity are June and July (84%).
The months with the lowest relative humidity are February, November and December (79%).
Average rainfall in May
Helston, United Kingdom
- Average rainfall in May: 29mm
The wettest month (with the highest rainfall) is November (91mm).
The driest month (with the least rainfall) is May (29mm).
Average rainfall days in May
Helston, United Kingdom
- Average rainfall days in May: 13.6 days
The month with the highest number of rainy days is December (21.7 days).
The month with the least rainy days is May (13.6 days).
Average snowfall in May
Helston, United Kingdom
- Average snowfall in May: 0mm
The month with the highest snowfall is February (3mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in May
Helston, United Kingdom
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Helston, United Kingdom
- Average daylight in May: 15h and 2min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in May: 8h and 2min
The months with the most sunshine are April and July (Average sunshine: 8h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in May
Helston, United Kingdom
- Average sunshine days in May: 14.8 days
The month with the most sunshine days is May (14.8 days).
The month with the least sunshine days is November (5.3 days).
Average UV index in May
Helston, United Kingdom
- Average UV index in May: 4
The month with the highest UV index is August (UV index 5).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in May
Helston, United Kingdom
- Average cloud cover in May: 45
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is April (Cloud cover 43).
Average visibility in May
Helston, United Kingdom
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Helston, United Kingdom
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