Swimming in Slovenia in august 2025 Sea temperature by city in august
Do you want to go to the beach in Slovenia in august 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 august in Slovenia by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature in Slovenia in august 2025
Here, find the average sea temperature in Slovenia in august in several coastal cities.
77°F
min: 72°F / max: 82°F
Ankaran
77°F
min: 72°F / max: 82°F
77°F
min: 72°F / max: 82°F
Koper
77°F
min: 72°F / max: 82°F
Portorož
77°F
min: 72°F / max: 82°F
Where should you go swimming in Slovenia in the month of august?
Swimming in Slovenia in august is pleasant
In august in Slovenia swimming conditions are generally the same everywhere.
As for Piran, Ankaran, Izola, Koper and Portorož, swimming is pleasant in august. The sea water is 77°F on average (min: 72°F/max: 82°F) so you can easily spend time in the water.
Where to go swimming in Slovenia in august: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in august
Piran
| August | |||
| Average sea temperature | 77°F | ||
| Minimum sea temperature | 72°F | ||
| Maximum sea temperature | 82°F | ||
| Average outside temperature | 79°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 72°F | ||
| Precipitation | 5.9in | ||
| Number of days of precipitation | 7 jour(s) (22%) | ||
| Cloud cover | 18% | ||
| Our opinion | pleasant swimming |
More information on swimming in Piran in august
Ankaran
| August | |||
| Average sea temperature | 77°F | ||
| Minimum sea temperature | 72°F | ||
| Maximum sea temperature | 82°F | ||
| Average outside temperature | 79°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 72°F | ||
| Precipitation | 5.9in | ||
| Number of days of precipitation | 7 jour(s) (22%) | ||
| Cloud cover | 18% | ||
| Our opinion | pleasant swimming |
Izola
| August | |||
| Average sea temperature | 77°F | ||
| Minimum sea temperature | 72°F | ||
| Maximum sea temperature | 82°F | ||
| Average outside temperature | 79°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 72°F | ||
| Precipitation | 5.9in | ||
| Number of days of precipitation | 7 jour(s) (22%) | ||
| Cloud cover | 18% | ||
| Our opinion | pleasant swimming |
More information on swimming in Izola in august
Koper
| August | |||
| Average sea temperature | 77°F | ||
| Minimum sea temperature | 72°F | ||
| Maximum sea temperature | 82°F | ||
| Average outside temperature | 79°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 72°F | ||
| Precipitation | 5.9in | ||
| Number of days of precipitation | 7 jour(s) (22%) | ||
| Cloud cover | 18% | ||
| Our opinion | pleasant swimming |
Portorož
| August | |||
| Average sea temperature | 77°F | ||
| Minimum sea temperature | 72°F | ||
| Maximum sea temperature | 82°F | ||
| Average outside temperature | 79°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 72°F | ||
| Precipitation | 5.9in | ||
| Number of days of precipitation | 7 jour(s) (22%) | ||
| Cloud cover | 18% | ||
| Our opinion | pleasant swimming |
List of coastal cities in Slovenia
| Piran in august | pleasant swimming |
| Ankaran in august | pleasant swimming |
| Izola in august | pleasant swimming |
| Koper in august | pleasant swimming |
| Portorož in august | pleasant swimming |