May weather forecast
Sennen, United Kingdom

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Weather in May

Sea temperature

In Sennen, United Kingdom, in May, the average water temperature is 12°C (53.6°F).
Note: You can swim in 12°C (53.6°F) below 10°C (50°F) with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. A short span at 13°C (55.4°F) without it is tough.

Daylight

The average length of the day in May in Sennen is 15h and 26min.
On the first day of May in Sennen, sunrise is at 5:57 am and sunset at 8:42 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 9:22 pm BST.
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Frequently asked questions

How cold is the water in May in Sennen?

In Sennen, United Kingdom, in May, the average water temperature is 12°C (53.6°F). Swimming in 12°C (53.6°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

How many hours of daylight does Sennen have in May?

In May, the average day length in Sennen, United Kingdom, is 15h and 26min.

What time are sunrise and sunset in May in Sennen?

In May, on the first day of the month, sunrise is at 5:57 am and sunset at 8:42 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 9:22 pm BST.

Average sea temperature in May
Sennen, United Kingdom

Average sea temperature in May - Sennen, United Kingdom
  • Average sea temperature in May: 12°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).

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Average daylight in May
Sennen, United Kingdom

Average daylight in May - Sennen, United Kingdom
  • Average daylight in May: 15h and 2min

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).

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Sennen, United Kingdom

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