Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average sea temperature in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
Dumbarton in April denotes a subtle temperature transition, adjusting from an average high of a frosty 7.3°C (45.1°F) in March to a fresh 10.5°C (50.9°F). The nights of April in Dumbarton, United Kingdom, anticipate an average low-temperature of 3.8°C (38.8°F).Humidity
April and May, with an average relative humidity of 83%, are the least humid months in Dumbarton.Rainfall
The month with the least rainfall in Dumbarton is April, when the rain falls for 17.8 days and typically collects 37mm (1.46") of precipitation.Snowfall
Months with snowfall in Dumbarton, United Kingdom, are January through April, November and December. April is the last month it regularly snows. During 0.3 snowfall days, in April, Dumbarton aggregates 2mm (0.08") of snow. Throughout the year, in Dumbarton, United Kingdom, there are 13 snowfall days, and 127mm (5") of snow is accumulated.Sea temperature
In April, the average sea temperature in Dumbarton is 8.5°C (47.3°F).Note: Dipping into 8.5°C (47.3°F) below 10°C (50°F) needs protective wear, or you'd face cold shock and breathing issues swiftly. Meanwhile, a slight swim around 13°C (55.4°F) feels cold to the bone.
Daylight
In April, the average length of the day is 14h and 14min.On the first day of the month, sunrise is at 6:46 am and sunset at 7:56 pm. On the last day of April, in Dumbarton, United Kingdom, sunrise is at 5:35 am and sunset at 8:55 pm BST.
Sunshine
The average sunshine in April is 6.6h.UV index
The months with the lowest UV index in Dumbarton, United Kingdom, are January through April, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: In April, the maximum UV index of 2 suggests these recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the usual temperature for Dumbarton in April?
What are the least humid months in Dumbarton?
What is the average humidity in April in Dumbarton?
What is the driest month in Dumbarton?
How much does it rain in Dumbarton in April?
What is the last month it snows in Dumbarton?
How cold is the water in April in Dumbarton?
What is the average length of the day in April in Dumbarton?
What time are sunrise and sunset in April in Dumbarton?
How long on average sun shines in April in Dumbarton?
What are the months with the lowest UV index in Dumbarton?
How high is the UV index in April in Dumbarton?
Average temperature in April
Dumbarton, United Kingdom
- Average high temperature in April: 10.5°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 April: 3.8°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 April
Dumbarton, United Kingdom
- Average pressure in April: 1014.5mbar
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 April
Dumbarton, United Kingdom
- Average wind speed in April: 15km/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 April
Dumbarton, United Kingdom
- Average humidity in April: 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 April
Dumbarton, United Kingdom
- Average rainfall in April: 37mm
The wettest month (with the highest rainfall) is December (88mm).
The driest month (with the least rainfall) is April (37mm).
Average rainfall days in April
Dumbarton, United Kingdom
- Average rainfall days in April: 17.8 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 April
Dumbarton, United Kingdom
- Average snowfall in April: 2mm
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 April
Dumbarton, United Kingdom
- Average snowfall days in April: 0.3 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 April
Dumbarton, United Kingdom
- Average sea temperature in April: 8.5°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 April /
Average sunshine in April
Dumbarton, United Kingdom
- Average daylight in April: 14h and 1min
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 April: 6h and 4min
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 April
Dumbarton, United Kingdom
- Average sunshine days in April: 8.9 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 April
Dumbarton, United Kingdom
- Average UV index in April: 2
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 April
Dumbarton, United Kingdom
- Average cloud cover in April: 56
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 April
Dumbarton, United Kingdom
- Average visibility in April: 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).
Dumbarton, United Kingdom
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