Swimming in Slovenia in april 2025 Sea temperature by city in april
Do you want to go to the beach in Slovenia in april 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in april in Slovenia by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature in Slovenia in april 2025
Here, find the average sea temperature in Slovenia in april in several coastal cities.
56°F
min: 52°F / max: 60°F
Ankaran
56°F
min: 52°F / max: 60°F
56°F
min: 52°F / max: 60°F
Koper
56°F
min: 52°F / max: 60°F
Portorož
56°F
min: 52°F / max: 60°F
Where should you go swimming in Slovenia in the month of april?
Swimming in Slovenia in april is freezing
In april in Slovenia swimming conditions are generally the same everywhere.
Forget about swimming in Piran, Ankaran, Izola, Koper and Portorož in april! The water temperature is freezing, reaching as low as 52°F (and only 60°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!
Where to go swimming in Slovenia in april: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in april
Piran
| April | |||
| Average sea temperature | 56°F | ||
| Minimum sea temperature | 52°F | ||
| Maximum sea temperature | 60°F | ||
| Average outside temperature | 58°F | ||
| Maximum outside temperature | 63°F | ||
| Minimum outside temperature | 50°F | ||
| Precipitation | 6in | ||
| Number of days of precipitation | 8 jour(s) (27%) | ||
| Cloud cover | 36% | ||
| Our opinion | freezing swimming |
More information on swimming in Piran in april
Ankaran
| April | |||
| Average sea temperature | 56°F | ||
| Minimum sea temperature | 52°F | ||
| Maximum sea temperature | 60°F | ||
| Average outside temperature | 58°F | ||
| Maximum outside temperature | 63°F | ||
| Minimum outside temperature | 50°F | ||
| Precipitation | 6in | ||
| Number of days of precipitation | 8 jour(s) (27%) | ||
| Cloud cover | 36% | ||
| Our opinion | freezing swimming |
Izola
| April | |||
| Average sea temperature | 56°F | ||
| Minimum sea temperature | 52°F | ||
| Maximum sea temperature | 60°F | ||
| Average outside temperature | 58°F | ||
| Maximum outside temperature | 63°F | ||
| Minimum outside temperature | 50°F | ||
| Precipitation | 6in | ||
| Number of days of precipitation | 8 jour(s) (27%) | ||
| Cloud cover | 36% | ||
| Our opinion | freezing swimming |
More information on swimming in Izola in april
Koper
| April | |||
| Average sea temperature | 56°F | ||
| Minimum sea temperature | 52°F | ||
| Maximum sea temperature | 60°F | ||
| Average outside temperature | 58°F | ||
| Maximum outside temperature | 63°F | ||
| Minimum outside temperature | 50°F | ||
| Precipitation | 6in | ||
| Number of days of precipitation | 8 jour(s) (27%) | ||
| Cloud cover | 36% | ||
| Our opinion | freezing swimming |
Portorož
| April | |||
| Average sea temperature | 56°F | ||
| Minimum sea temperature | 52°F | ||
| Maximum sea temperature | 60°F | ||
| Average outside temperature | 58°F | ||
| Maximum outside temperature | 63°F | ||
| Minimum outside temperature | 50°F | ||
| Precipitation | 6in | ||
| Number of days of precipitation | 8 jour(s) (27%) | ||
| Cloud cover | 36% | ||
| Our opinion | freezing swimming |
List of coastal cities in Slovenia
| Piran in april | freezing swimming |
| Ankaran in april | freezing swimming |
| Izola in april | freezing swimming |
| Koper in april | freezing swimming |
| Portorož in april | freezing swimming |