December weather forecast
Piran, Slovenia

Weather in December

Sea temperature

In December, the average sea temperature in Piran, Slovenia, is 13.2°C (55.8°F).
Note: Swimming in 13.2°C (55.8°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.

Daylight

With an average of 8h and 47min of daylight, December has the shortest days of the year in Piran.
On the first day of the month, sunrise is at 07:25 and sunset at 16:24. On the last day of December, sunrise is at 07:45 and sunset at 16:31 CET.
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FAQ

What is the sea water temperature in December in Piran?

In Piran, the average seawater temperature in December is 13.2°C (55.8°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

What is the month with the shortest days in Piran?

The month with the shortest days in Piran is December, with an average of 8h and 47min of daylight.

How many hours of daylight does Piran have in December?

In December, the average day length in Piran, Slovenia, is 8h and 47min.

What time are sunrise and sunset in December in Piran?

On the first day of December, sunrise is at 07:25 and sunset at 16:24. On the last day of the month, sunrise is at 07:45 and sunset at 16:31 CET.

Average sea temperature in December
Piran, Slovenia

Average sea temperature in December - Piran, Slovenia
  • Average sea temperature in December: 13.2°C

The best months for swimming (with the highest average sea temperature) are July and August (24.8°C).
The coldest month (with the lowest average sea temperature) is February (9.3°C).

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Average daylight in December
Piran, Slovenia

Average daylight in December - Piran, Slovenia
  • Average daylight in December: 8h and 47min

The month with the longest days is June (Average daylight: 15h and 38min).
The month with the shortest days is December (Average daylight: 8h and 47min).

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