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 sea temperature 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
Helensburgh's average high-temperature in May is a still cool 12.8°C (55°F), indicating a subtle variation from April. Helensburgh's average low-temperature is measured at an icy 5.8°C (42.4°F) during May.Humidity
The months with the lowest humidity are April and May, with an average relative humidity of 83%.Rainfall
In Helensburgh, United Kingdom, in May, during 20.8 rainfall days, 65mm (2.56") of precipitation is typically accumulated. In Helensburgh, United Kingdom, during the entire year, the rain falls for 249.9 days and collects up to 1079mm (42.48") of precipitation.Snowfall
May through October are months without snowfall.Sea temperature
In Helensburgh, United Kingdom, in May, the average water temperature is 9.5°C (49.1°F).Note: With the appropriate swimsuit, one can swim in 9.5°C (49.1°F) even if temperatures dip below 10°C (50°F); otherwise, be ready for cold shock and breath issues. A fleeting swim around 13°C (55.4°F) is distressing.
Daylight
In May, the average length of the day is 16h and 21min.On the first day of the month, sunrise is at 5:33 am and sunset at 8:58 pm. On the last day of May, sunrise is at 4:41 am and sunset at 9:52 pm BST.
Sunshine
In Helensburgh, the average sunshine in May is 6.3h.UV index
May and June, with an average maximum UV index of 4, are months with the highest UV index in Helensburgh. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In May, the maximum UV index of 4 suggests this advice:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Frequently asked questions
What is the average May temperature in Helensburgh?
What are the least humid months in Helensburgh?
What is the average humidity in May in Helensburgh?
How much does it rain in Helensburgh in May?
When it does not snow in Helensburgh?
Does it snow in Helensburgh in May?
What is the sea water temperature in May in Helensburgh?
How many hours of daylight does Helensburgh have in May?
When are sunrise and sunset in May in Helensburgh?
How long on average sun shines in May in Helensburgh?
When is the highest UV index in Helensburgh?
How high is the UV index in May in Helensburgh?
Average temperature in May
Helensburgh, United Kingdom
- Average high temperature in May: 12.8°C
The warmest month (with the highest average high temperature) is July (16.3°C).
The month with the lowest average high temperature is January (5°C).
- Average low temperature in May: 5.8°C
The month with the highest average low temperature is July (9.8°C).
The coldest month (with the lowest average low temperature) is February (1.4°C).
Average pressure in May
Helensburgh, United Kingdom
- Average pressure in May: 1015.2mbar
The month with the highest atmospheric pressure is May (1015.2mbar).
The month with the lowest atmospheric pressure is November (1006.6mbar).
Average wind speed in May
Helensburgh, United Kingdom
- Average wind speed in May: 14.7km/h
The windiest month (with the highest average wind speed) is January (19.3km/h).
The calmest months (with the lowest average wind speed) are June and July (11.9km/h).
Average humidity in May
Helensburgh, United Kingdom
- Average humidity in May: 83%
The months with the highest relative humidity are January, August, September, October, November and December (89%).
The months with the lowest relative humidity are April and May (83%).
Average rainfall in May
Helensburgh, United Kingdom
- Average rainfall in May: 65mm
The wettest month (with the highest rainfall) is December (116mm).
The driest month (with the least rainfall) is April (48mm).
Average rainfall days in May
Helensburgh, United Kingdom
- Average rainfall days in May: 20.8 days
The month with the highest number of rainy days is August (24 days).
The month with the least rainy days is February (17.8 days).
Average snowfall in May
Helensburgh, United Kingdom
- Average snowfall in May: 0mm
The month with the highest snowfall is February (53mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in May
Helensburgh, United Kingdom
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in May
Helensburgh, United Kingdom
- Average sea temperature in May: 9.5°C
The best month for swimming (with the highest average sea temperature) is August (13.8°C).
The coldest month (with the lowest average sea temperature) is March (7.2°C).
Average daylight in May /
Average sunshine in May
Helensburgh, United Kingdom
- Average daylight in May: 16h and 2min
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 2min
The month with the most sunshine is June (Average sunshine: 6h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in May
Helensburgh, United Kingdom
- Average sunshine days in May: 8.3 days
The month with the most sunshine days is April (8.8 days).
The months with the least sunshine days are July and August (5.4 days).
Average UV index in May
Helensburgh, United Kingdom
- Average UV index in May: 4
The months with the highest UV index are May and June (UV index 4).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Helensburgh, United Kingdom
- Average cloud cover in May: 60
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is April (Cloud cover 59).
Average visibility in May
Helensburgh, United Kingdom
- Average visibility in May: 9km
The months with the highest visibility are January, February, March, April, May and November (9km).
The months with the lowest visibility are June, July, August, September, October and December (8km).
Helensburgh, United Kingdom
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