Koper

What is the climate like in Koper?

The best time to visit Koper is typically June – September, with trip comfort peaking in July (7.4/10). Koper is warmest in August, when daily highs average 83°F (28°C), and coolest in January, when lows fall to about 37°F (3°C). The wettest month is typically September and the driest is July; the year sees roughly 53 in (1337 mm) of precipitation.

• Best time to visitJune – September — comfort peaks in July (7.4/10)
• Warmest monthAugust — average high 83°F (28°C)
• Coolest monthJanuary — average low 37°F (3°C)
• Wettest monthSeptember (6.9 in (175 mm))
• Driest monthJuly (2.5 in (64 mm))
• Annual precipitation53 in (1337 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromTrieste, 11 km away (1966-2025)