Koper Weather in July
July in Koper brings high temperatures, with daytime highs of 28°C (82°F) and nights around 20°C (68°F). Rainfall is at its lowest this month, making it one of the more reliable months to be outdoors.
Rainfall in Koper in July
This month is perfect for exploring, with the driest conditions of the year. On average, there are about 11 days with rain during this month, averaging 68 mm (2.7 in). Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Koper in July
Koper in July has perfect weather. Days reach 28°C (82°F) and nights cool to 20°C (68°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows of 20°C (68°F), the nights are warm and generally comfortable.
Sunshine in Koper in July
With approximately 317 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.If your ideal day consists of dry skies and pleasant temperatures, June, July and August typically offer the best circumstances for Koper.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Slovenia, check out our Koper's climate page.
Koper Temperature in July
Min Temperature
20°C (68°F)
Max Temperature
28°C (82°F)
Chance of Rain
37%
Precipitation
68 mm (2.7 in)
Rainy days
11 days
Humidity
50% *
Sunshine
317 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Koper typically stay consistent throughout July, with daily highs averaging around 28°C (82°F). Nights are pleasant, with lows around 18°C (64°F).
Average temperatures in July
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Historical weather for Koper in July
Browse day-by-day weather records for Koper spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Koper historical weather extremes in July
Based on weather observations in Koper between 1976 and 2025, these are the recorded extremes during July.
- The hottest July day on record in Koper reached 40°C (104°F) (July 23, 1994).
- Koper experienced its chilliest July day on July 3, 1979, reaching only 18°C (64°F).
- The coldest night in July in Koper was on July 17, 2000, with a minimum of 7°C (45°F).
Best Places in Slovenia in July
Find out more about the weather in Slovenia and which places have the best travel conditions in this month. See all of Slovenia in July →
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What to Wear in Koper in July
Warm weather calls for comfortable, breathable clothing in July. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Koper in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Slovenia, check out our Koper's climate page.
Temperature Rainfall Sunshine Humidity
See the full Koper climate overview or explore weather in Slovenia.
