May weather forecast
Piran, Slovenia

Weather in May

Sea temperature

In Piran, Slovenia, the average seawater temperature in May is 18°C (64.4°F).
Note: Swimming in 18°C (64.4°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

In May, the average length of the day is 14h and 55min.
On the first day of May, sunrise is at 05:53 and sunset at 20:12. On the last day of the month, sunrise is at 05:20 and sunset at 20:46 CEST.
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FAQ

What is the sea water temperature in May in Piran?

In May, the average sea temperature is 18°C (64.4°F). For swimming, a surface water temperature of 18°C (64.4°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

What is the average length of the day in May in Piran?

The average day length in May is 14h and 55min.

When are sunrise and sunset in May in Piran?

In May, on the first day of the month, sunrise is at 05:53 and sunset at 20:12. On the last day of the month, in Piran, Slovenia, sunrise is at 05:20 and sunset at 20:46 CEST.

Average sea temperature in May
Piran, Slovenia

Average sea temperature in May - Piran, Slovenia
  • Average sea temperature in May: 18°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 May
Piran, Slovenia

Average daylight in May - Piran, Slovenia
  • Average daylight in May: 14h and 55min

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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