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When to go · Koper

Koper in July

Avoid month. Listed as a month to avoid: Jul–Aug (crowds, heat, port traffic).

Key facts

Verdict
Avoid
Temperature
29°C (84°F) / 19°C (66°F)
average high / low
Rain days
8
Crowds
High
Slovenia overall
Prices
High
Slovenia overall

Verdict

AvoidBest and avoid months for Koper

Listed as a month to avoid: Jul–Aug (crowds, heat, port traffic).

Is another month better than July?

July is rated avoid. These months rate higher:

Weather in July

Long-term averages
  • KoperHighs around 29 °C (84 °F), lows around 19 °C (66 °F), rain on about 8 days
  • Karst and coast, Slovenia · Piran, Izola, Koper, Lipicahot

    Mediterranean; the bora wind blasts the Karst in winter; sea swimming June–September.

Crowds and prices

Crowds · Slovenia overall
High
Prices · Slovenia overall
High

Slovenia overall: Bled and Vintgar packed; go at dawn; afternoon storms in the Alps.

High-price month: see what to book ahead.

Compare two months

Weather, crowds and prices for any two months in Koper, side by side.

  • Verdict

    Jul: Avoid

    May: Great (better)

  • Daytime high

    Jul: 29 °C (84 °F)

    May: 23 °C (73 °F)

  • Night low

    Jul: 19 °C (66 °F)

    May: 13 °C (55 °F)

  • Rain days

    Jul: 8 (better)

    May: 10

  • Crowds

    Jul: High

    May: Medium

  • Prices

    Jul: High

    May: Medium

  • Festivals listed

    Jul: 0

    May: 0

July: Listed as a month to avoid: Jul–Aug (crowds, heat, port traffic).

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

  • Light, breathable clothes, a sun hat and sunscreen

Build the full packing list for your trip →

Across Slovenia in July →