Weather in April
April in Alderney is characterised by greater daylight availability signifying the arrival of the spring season in full swing. A significant jump in daylight hours is observed, with averages decreasing to 13.8 per day, further betraying the retreat of winter. An apparent shift in sea temperature noticeable, warming up to approximately 10.3°C (50.5°F), hinting at the approaching summer months. As we progress from March, the increased brightness and warmth of April serve as a cheerful greeting for residents and visitors alike.
Note: Beware of 10.3°C (50.5°F) waters at 13°C (55.4°F), they're uninviting, and a dip below 10°C (50°F) has risks of breath loss and cold shock, contingent on health.
On the first day of April in Alderney, sunrise is at 06:44 and sunset at 19:40. On the last day of the month, sunrise is at 05:46 and sunset at 20:25 BST.
Sea temperature
In April, the average sea temperature is 10.3°C (50.5°F).Note: Beware of 10.3°C (50.5°F) waters at 13°C (55.4°F), they're uninviting, and a dip below 10°C (50°F) has risks of breath loss and cold shock, contingent on health.
Daylight
In Alderney, Guernsey, the average length of the day in April is 13h and 47min.On the first day of April in Alderney, sunrise is at 06:44 and sunset at 19:40. On the last day of the month, sunrise is at 05:46 and sunset at 20:25 BST.
Updated: Jun 5, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is the water in April?
In Alderney, in April, the average water temperature is 10.3°C (50.5°F). Swimming in 10.3°C (50.5°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.
What is the average length of the day in April?
The average day length in April is 13h and 47min.
When are sunrise and sunset in April in Alderney?
In April, on the first day of the month, sunrise is at 06:44 and sunset at 19:40. On the last day of the month, sunrise is at 05:46 and sunset at 20:25 BST.
Average sea temperature in April
Alderney, Guernsey
- Average sea temperature in April: 10.3°C
The best month for swimming (with the highest average sea temperature) is September (17.4°C).
The coldest month (with the lowest average sea temperature) is March (9.3°C).
Average daylight in April
Alderney, Guernsey
- Average daylight in April: 13h and 5min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).
Alderney, Guernsey
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