Click on a day for an hourly weather forecast
The temperatures in Portoroz in October are usually low and can range between 10°C and 18°C.
You can expect about 3 to 8 days of rain in Portoroz during the month of October. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Portoroz in October 2025.
If you’re planning to visit Portoroz in the near future, we highly recommend that you review the 14 day weather forecast for Portoroz before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 0° | 8 | 22 | 2 | 154 mm | Awful | Portoroz in January |
| February | 9° / 1° | 8 | 18 | 2 | 204 mm | Awful | Portoroz in February |
| March | 12° / 3° | 8 | 22 | 1 | 161 mm | Bad | Portoroz in March |
| April | 17° / 8° | 7 | 23 | 0 | 143 mm | Ok | Portoroz in April |
| May | 21° / 11° | 11 | 20 | 0 | 219 mm | Ok | Portoroz in May |
| June | 26° / 16° | 9 | 21 | 0 | 192 mm | Good | Portoroz in June |
| July | 28° / 19° | 7 | 24 | 0 | 155 mm | Good | Portoroz in July |
| August | 29° / 20° | 6 | 25 | 0 | 138 mm | Good | Portoroz in August |
| September | 24° / 15° | 9 | 21 | 0 | 240 mm | Good | Portoroz in September |
| October | 18° / 10° | 7 | 24 | 0 | 198 mm | Ok | Portoroz in October |
| November | 13° / 6° | 10 | 20 | 0 | 272 mm | Bad | Portoroz in November |
| December | 9° / 2° | 8 | 22 | 1 | 224 mm | Bad | Portoroz in December |