When to go · Koper
Koper in January
Mixed month. Outside the best window (May–Jun, Sep–early Oct). Across Slovenia: Ski season at Kranjska Gora and Vogel; Ljubljana foggy and quiet.
Key facts
- Verdict
- Mixed
- Temperature
- 9°C (48°F)48°F (9°C) / 3°C (37°F)37°F (3°C)
- average high / low
- Rain days
- 8
- Crowds
- Low
- Slovenia overall
- Prices
- Low
- Slovenia overall
Verdict
Outside the best window (May–Jun, Sep–early Oct). Across Slovenia: Ski season at Kranjska Gora and Vogel; Ljubljana foggy and quiet.
Is another month better than January?
January is rated mixed. These months rate higher:
Weather in January
- KoperHighs around 9 °C (48 °F), lows around 3 °C (37 °F), rain on about 8 daysHighs around 48 °F (9 °C), lows around 37 °F (3 °C), rain on about 8 days
- Karst and coast, Slovenia · Piran, Izola, Koper, Lipicacool
Mediterranean; the bora wind blasts the Karst in winter; sea swimming June–September.
Crowds and prices
- Crowds · Slovenia overall
- Low
- Prices · Slovenia overall
- Low
Slovenia overall: Ski season at Kranjska Gora and Vogel; Ljubljana foggy and quiet.
Compare two months
Weather, crowds and prices for any two months in Koper, side by side.
Verdict
Jan: Mixed
May: Great (better)
Daytime high
Jan: 9 °C (48 °F)48 °F (9 °C)
May: 23 °C (73 °F)73 °F (23 °C)
Night low
Jan: 3 °C (37 °F)37 °F (3 °C)
May: 13 °C (55 °F)55 °F (13 °C)
Rain days
Jan: 8 (better)
May: 10
Crowds
Jan: Low
May: Medium
Prices
Jan: Low
May: Medium
Festivals listed
Jan: 0
May: 0
January: Outside the best window (May–Jun, Sep–early Oct). Across Slovenia: Ski season at Kranjska Gora and Vogel; Ljubljana foggy and quiet.
May: Inside Koper's best window: May–Jun, Sep–early Oct.
Koper: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm coat, hat and gloves for mornings and evenings
- Layers: a fleece or light jacket