worldweatherSlovenia weather in September - temperature, rain and is it a good time to visit?
September is one of the best months for a holiday in Slovenia.
Daytime
22°
Night
12°
☀️ Day length
12 h 35 min
Chance of rain
44%
Thunder days
11%
Humid days
41%
In September, Slovenia averages about 22° during the day and 12° at night. There's a moderate chance of rain (about 44%).
Slovenia weather all year - average temperatures and rain
| Month | Day | Night | Chance of rain |
|---|---|---|---|
| January | 5℃ | -2℃ | 30% |
| February | 7℃ | -1℃ | 43% |
| March | 12℃ | 2℃ | 34% |
| April ★ | 18℃ | 6℃ | 44% |
| May ★ | 21℃ | 10℃ | 55% |
| June ★ | 26℃ | 14℃ | 48% |
| July ★ | 28℃ | 16℃ | 47% |
| August ★ | 27℃ | 15℃ | 39% |
| September ★ | 22℃ | 12℃ | 44% |
| October ★ | 17℃ | 7℃ | 41% |
| November | 11℃ | 3℃ | 44% |
| December | 6℃ | -1℃ | 24% |
★ - months most often recommended for travel
Where is it warmest in Slovenia in September? Weather by city
| Place | Day | Night | 🌊 Sea | Chance of rain |
|---|---|---|---|---|
| Koper | 25℃ | 15℃ | 24℃ | 31% |
| Predjama | 25℃ | 17℃ | - | 32% |
| Kranj | 22℃ | 10℃ | - | 43% |
| Novo Mesto | 22℃ | 11℃ | - | 45% |
| Ljubljana | 21℃ | 10℃ | - | 50% |
| Maribor | 21℃ | 11℃ | - | 50% |
| Ptuj | 21℃ | 11℃ | - | 50% |
| Celje | 21℃ | 10℃ | - | 40% |
| Šmartno pri Litiji | 21℃ | 10℃ | - | 50% |
| Velenje | 20℃ | 10℃ | - | 49% |
Travelling soon? Check the live 14-day weather forecast for Slovenia.