May weather forecastDumbarton, United Kingdom
May
Weather in May
The last month of the spring, May, is also a fresh month in Dumbarton, United Kingdom, with an average temperature ranging between max 12.9°C (55.2°F) and min 5.8°C (42.4°F).Temperature
Dumbarton, United Kingdom, experiences a transition to a still cool 12.9°C (55.2°F) in average high-temperatures with the arrival of May, not greatly differing from April's 10.5°C (50.9°F). An average temperature of 5.8°C (42.4°F) marks the nights in Dumbarton in May.Humidity
April and May, with an average relative humidity of 83%, are the least humid months in Dumbarton, United Kingdom.Rainfall
In Dumbarton, in May, during 19.6 rainfall days, 46mm (1.81") of precipitation is typically accumulated. In Dumbarton, during the entire year, the rain falls for 242.3 days and collects up to 788mm (31.02") of precipitation.Snowfall
In Dumbarton, snow does not fall in May through October.Sea temperature
In May, the average sea temperature in Dumbarton is 9.8°C (49.6°F).Note: Beware when you're in 9.8°C (49.6°F) waters; 13°C (55.4°F) is chilling and anything below 10°C (50°F) could cause breathing hindrance and a sudden cold shock, given your physical condition.
Daylight
The average length of the day in May is 16h and 20min.On the first day of May in Dumbarton, sunrise is at 5:32 am and sunset at 8:57 pm. On the last day of the month, sunrise is at 4:40 am and sunset at 9:51 pm BST.
Sunshine
In Dumbarton, the average sunshine in May is 6.6h.UV index
The months with the highest UV index in Dumbarton, United Kingdom, are May through July, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 4 during May translates into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Dumbarton, United Kingdom
- Average high temperature in May: 12.9°C
The warmest month (with the highest average high temperature) is July (16.8°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°C).
The coldest months (with the lowest average low temperature) are January and February (1.4°C).
Average pressure in May
Dumbarton, 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 (1006.7mbar).
Average wind speed in May
Dumbarton, United Kingdom
- Average wind speed in May: 14.4km/h
The windiest month (with the highest average wind speed) is January (18.6km/h).
The calmest month (with the lowest average wind speed) is July (12km/h).
Average humidity in May
Dumbarton, United Kingdom
- Average humidity in May: 83%
The months with the highest relative humidity are November and December (90%).
The months with the lowest relative humidity are April and May (83%).
Average rainfall in May
Dumbarton, United Kingdom
- Average rainfall in May: 46mm
The wettest month (with the highest rainfall) is December (88mm).
The driest month (with the least rainfall) is April (37mm).
Average rainfall days in May
Dumbarton, United Kingdom
- Average rainfall days in May: 19.6 days
The months with the highest number of rainy days are July and August (23 days).
The month with the least rainy days is February (17.3 days).
Average snowfall in May
Dumbarton, United Kingdom
- Average snowfall in May: 0mm
The month with the highest snowfall is February (49mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in May
Dumbarton, United Kingdom
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in May
Dumbarton, United Kingdom
- Average sea temperature in May: 9.8°C
The best month for swimming (with the highest average sea temperature) is August (14.3°C).
The coldest month (with the lowest average sea temperature) is March (7.4°C).
Average daylight in May /
Average sunshine in May
Dumbarton, 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
Dumbarton, United Kingdom
- Average sunshine days in May: 8.4 days
The month with the most sunshine days is March (9.4 days).
The month with the least sunshine days is July (5.3 days).
Average UV index in May
Dumbarton, United Kingdom
- Average UV index in May: 4
The months with the highest UV index are May, June and July (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in May
Dumbarton, United Kingdom
- Average cloud cover in May: 58
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
Dumbarton, United Kingdom
- Average visibility in May: 9km
The months with the highest visibility are February, March, April and May (9km).
The months with the lowest visibility are January, June, July, August, September, October, November and December (8km).
