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
In April, the average high-temperature marginally rises from a chilly 7.3°C (45.1°F) in March to a cool 10.3°C (50.5°F). In the month of April, Helensburgh records a consistent average low-temperature of 3.8°C (38.8°F).Humidity
The months with the lowest humidity are April and May, with an average relative humidity of 83%.Rainfall
The month with the least rainfall is April, when the rain falls for 18.2 days and typically collects 48mm (1.89") of precipitation.Snowfall
Months with snowfall in Helensburgh are January through April, November and December. April is the last month it regularly snows in Helensburgh. During 0.3 snowfall days, in April, Helensburgh aggregates 2mm (0.08") of snow. In Helensburgh, during the entire year, snow falls for 10.8 days and aggregates up to 115mm (4.53") of snow.Sea temperature
In Helensburgh, the average seawater temperature in April is 8.1°C (46.6°F).Note: Caution: 8.1°C (46.6°F) temperatures below 10°C (50°F) during swimming can result in intense cold shock and quickened breathing.
Daylight
The average length of the day in April is 14h and 14min.On the first day of April in Helensburgh, sunrise is at 6:47 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:56 pm BST.
Sunshine
In April, the average sunshine is 6.1h.UV index
In April, the average daily maximum UV index in Helensburgh is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 2 during April translates into the following guidance:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Frequently asked questions
What is the average April temperature in Helensburgh?
What is the least humid month in Helensburgh?
What is the average humidity in April in Helensburgh?
What is the driest month in Helensburgh?
How many days does it rain in April in Helensburgh?
What is the last month it snows in Helensburgh?
How cold is the water in April in Helensburgh?
How many hours of daylight does Helensburgh have in April?
When are sunrise and sunset in April in Helensburgh?
How long on average sun shines in April in Helensburgh?
How high is the UV index in April in Helensburgh?
Average temperature in April
Helensburgh, United Kingdom
- Average high temperature in April: 10.3°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 April: 3.8°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 April
Helensburgh, United Kingdom
- Average pressure in April: 1014.3mbar
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 April
Helensburgh, United Kingdom
- Average wind speed in April: 15.3km/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 April
Helensburgh, United Kingdom
- Average humidity in April: 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 April
Helensburgh, United Kingdom
- Average rainfall in April: 48mm
The wettest month (with the highest rainfall) is December (116mm).
The driest month (with the least rainfall) is April (48mm).
Average rainfall days in April
Helensburgh, United Kingdom
- Average rainfall days in April: 18.2 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 April
Helensburgh, United Kingdom
- Average snowfall in April: 2mm
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 April
Helensburgh, United Kingdom
- Average snowfall days in April: 0.3 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 April
Helensburgh, United Kingdom
- Average sea temperature in April: 8.1°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 April /
Average sunshine in April
Helensburgh, 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 1min
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 April
Helensburgh, United Kingdom
- Average sunshine days in April: 8.8 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 April
Helensburgh, United Kingdom
- Average UV index in April: 2
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 April
Helensburgh, United Kingdom
- Average cloud cover in April: 59
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 April
Helensburgh, United Kingdom
- Average visibility in April: 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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