Weather in April
Temperature
The average high-temperature for April is a still cool 12.1°C (53.8°F), closely aligning with the temperature of the preceding month. During April, the temperature in Londonderry is averaged to a low of 4.8°C (40.6°F) at night.Rainfall
In Londonderry, in April, it is raining for 12 days, with typically 55mm (2.17") of accumulated precipitation. Throughout the year, in Londonderry, there are 170 rainfall days, and 853mm (33.58") of precipitation is accumulated.Sea temperature
In Londonderry, in April, the average water temperature is 9.3°C (48.7°F).Note: With the appropriate swimsuit, one can swim in 9.3°C (48.7°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
The average length of the day in April is 14h and 9min.On the first day of April, sunrise is at 6:59 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 9:03 pm BST.
Sunshine
In April, the average sunshine is 5.2h.UV index
In Londonderry, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum UV index of 3 in April translates into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What is the average April temperature in Londonderry?
How much does it rain in Londonderry in April?
What is the sea water temperature in April in Londonderry?
How many hours of daylight does Londonderry have in April?
When is the sunrise / sunset in April in Londonderry?
How long on average sun shines in April in Londonderry?
What is the UV index reading in April in Londonderry?
Average temperature in April
Londonderry, United Kingdom
- Average high temperature in April: 12.1°C
The warmest month (with the highest average high temperature) is July (18.9°C).
The months with the lowest average high temperature are January and December (8°C).
- Average low temperature in April: 4.8°C
The month with the highest average low temperature is July (11.6°C).
The coldest month (with the lowest average low temperature) is February (2.1°C).
Average rainfall in April
Londonderry, United Kingdom
- Average rainfall in April: 55.2mm
The wettest month (with the highest rainfall) is October (89mm).
The driest month (with the least rainfall) is May (51.2mm).
Average rainfall days in April
Londonderry, United Kingdom
- Average rainfall days in April: 12 days
The month with the highest number of rainy days is November (19 days).
The month with the least rainy days is June (11 days).
Average sea temperature in April
Londonderry, United Kingdom
- Average sea temperature in April: 9.3°C
The best month for swimming (with the highest average sea temperature) is August (14.7°C).
The coldest month (with the lowest average sea temperature) is March (8.7°C).
Average daylight in April /
Average sunshine in April
Londonderry, United Kingdom
- Average daylight in April: 14h and 1min
The month with the longest days is June (Average daylight: 17h and 18min).
The month with the shortest days is December (Average daylight: 7h and 18min).
- Average sunshine in April: 5h and 1min
The month with the most sunshine is May (Average sunshine: 6h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 12min).
Average UV index in April
Londonderry, United Kingdom
- Average UV index in April: 3
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 0).
Londonderry, United Kingdom
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