Koper Weather & Climate

Slovenia

Koper sees feels-like daytime highs peak around 32.1°C in July and nighttime lows bottom out near 2.5°C in January. October is the wettest month (~98 mm), while February is the driest (~52 mm). For sunshine, July leads with about 72% clear skies.

Best time to visit Koper

Based on mild feels-like temperatures and low rain chances, the most comfortable months are May, September, and June — expect around 15.324.2°C with roughly 29% chance of rain on a given day in May.

Koper climate by month

MonthLow / High °CRain %RainfallClear skiesWind
January2.5° / 7.1°21%54 mm47%12.8 kph
February3° / 8.2°19%52 mm50%13 kph
March6.2° / 12.5°22%58 mm49%12.2 kph
April10.2° / 17.6°27%62 mm49%11.1 kph
May15.3° / 24.2°29%68 mm52%10.1 kph
June20.2° / 29.6°29%64 mm61%9.2 kph
July22.6° / 32.1°24%52 mm72%9 kph
August22.4° / 31.9°24%61 mm71%9.4 kph
September18.8° / 26.9°27%87 mm61%10.5 kph
October13.6° / 20.4°30%98 mm52%11.9 kph
November7.8° / 13.3°28%92 mm45%12.8 kph
December4.1° / 9.3°25%73 mm45%12.8 kph

Feels-like temperatures from long-term historical data; ☀ marks the most comfortable months (mild temperatures, low rain).

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