Koper Climate by Month
Koper, Urban Municipality of Koper, Slovenia
Warm summers and cool winters, with rain spread through the year.
Warm summers and cool winters, with rain spread through the year: that's Koper's climate in short. July is the warmest month, with highs around 85°F (29°C); January is the coolest at 47°F (9°C), and nights dip to 38°F (3°C). About 38 in (955 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 85°F(29°C)
- Average high, July
- Coldest nights
- 38°F(3°C)
- Average low, January
- Rain per year
- 38 in(955 mm)
- No clear rainy season
- Humidity
- 68%
- Sunniest: July
Best and worst months in Koper
Best for weatherThe most comfortable weather comes in May, June and September, with highs around 76°F (25°C) and about 3.4 in (87 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; December is the coldest, with highs of only 50°F (10°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Koper weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 47°F(9°C) | 38°F(3°C) | 2.2 in(55 mm) | 64% | 1.2 |
| FebFebruary | 50°F(10°C) | 38°F(3°C) | 2.2 in(57 mm) | 72% | 2.0 |
| MarMarch | 56°F(14°C) | 43°F(6°C) | 2.4 in(61 mm) | 66% | 3.0 |
| AprApril | 64°F(18°C) | 49°F(10°C) | 2.6 in(66 mm) | 70% | 4.5 |
| MayMayBest | 73°F(23°C) | 58°F(15°C) | 3.1 in(80 mm) | 65% | 5.5 |
| JunJuneBest | 81°F(27°C) | 66°F(19°C) | 2.7 in(68 mm) | 65% | 6.2 |
| JulJuly | 85°F(29°C) | 69°F(21°C) | 2.3 in(58 mm) | 60% | 6.3 |
| AugAugust | 85°F(29°C) | 69°F(21°C) | 3.0 in(77 mm) | 63% | 5.4 |
| SepSeptemberBest | 75°F(24°C) | 61°F(16°C) | 4.4 in(112 mm) | 68% | 3.9 |
| OctOctober | 66°F(19°C) | 55°F(13°C) | 4.5 in(115 mm) | 72% | 2.4 |
| NovNovember | 57°F(14°C) | 48°F(9°C) | 4.6 in(117 mm) | 74% | 1.3 |
| DecDecember | 50°F(10°C) | 40°F(5°C) | 3.5 in(89 mm) | 79% | 1.0 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
All 20 places like Koper →- 🇮🇹PordenoneFriuli Venezia Giulia, Italy · Pop. 50k97%matchSame summer highsSame humidityKoper vs Pordenone →
- 🇮🇹TrevisoVeneto, Italy · Pop. 86k95%matchSame summer highsSimilar rainfallKoper vs Treviso →
- 🇮🇹AlessandriaPiedmont, Italy · Pop. 92k95%matchSame summer highsSame humidityKoper vs Alessandria →
- 🇮🇹VicenzaVeneto, Italy · Pop. 112k95%matchSame humiditySame sunshineKoper vs Vicenza →
- 🇭🇷PulaIstria, Croatia · Pop. 52k95%matchSame summer highsSame winter lowsKoper vs Pula →