When to go · Koper
Koper in September
Great month. Inside Koper's best window: May–Jun, Sep–early Oct.
Key facts
- Verdict
- Great
- Temperature
- 25°C77°F / 16°C61°F
- average high / low
- Rain days
- 9
- Crowds
- Medium
- Slovenia overall
- Prices
- Medium
- Slovenia overall
Verdict
GreatBest and avoid months for Koper
Inside Koper's best window: May–Jun, Sep–early Oct.
Weather in September
- KoperHighs around 25 °C, lows around 16 °C, rain on about 9 daysHighs around 77 °F, lows around 61 °F, rain on about 9 days
- Karst and coast, Slovenia · Piran, Izola, Koper, Lipicabest weather
Mediterranean; the bora wind blasts the Karst in winter; sea swimming June–September.
Crowds and prices
- Crowds · Slovenia overall
- Medium
- Prices · Slovenia overall
- Medium
Slovenia overall: Best month: warm sea, clear mountains, fewer people.
What to pack
Nothing unusual for the weather this month.