Weather in January
Sea temperature
In January, the average sea temperature in Sennen, United Kingdom, is 10.4°C (50.7°F).Note: Being in 10.4°C (50.7°F) waters at 13°C (55.4°F) is discomforting, but anything below 10°C (50°F) can jeopardize breathing and induce cold shock, factoring in physical endurance.
Daylight
The average length of the day in January in Sennen is 8h and 38min.On the first day of the month, sunrise is at 8:21 am and sunset at 4:30 pm. On the last day of January, sunrise is at 7:58 am and sunset at 5:13 pm GMT.
Frequently asked questions
What is the water temperature in January in Sennen?
In January, the average sea temperature in Sennen, United Kingdom, is 10.4°C (50.7°F). Swimming in 10.4°C (50.7°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.
How many hours of daylight does Sennen have in January?
The average day length in January is 8h and 38min.
When are sunrise and sunset in January in Sennen?
On the first day of January in Sennen, United Kingdom, sunrise is at 8:21 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 5:13 pm GMT.
Average sea temperature in January
Sennen, United Kingdom
- Average sea temperature in January: 10.4°C
The best month for swimming (with the highest average sea temperature) is August (17.1°C).
The coldest month (with the lowest average sea temperature) is March (9.7°C).
Average daylight in January
Sennen, United Kingdom
- Average daylight in January: 8h and 4min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
Sennen, United Kingdom
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