Koper, Urban Municipality of Koper Climate
Slovenia
Pop. 25,753 Elev. 12 m / 39 ft
TZ: Europe/Ljubljana (UTC+2) ·
Koper has mild summers with average highs of 83°F (28°C) in June, and cool winters averaging 39°F (4°C) in February. Rain falls on about 70 days per year (54.8 in / 1392 mm total), with 1 in (28 mm) of annual snowfall. The city averages 160 sunny days per year and around 49 thunderstorm days. Ocean water temperatures reach 82°F (28°C) in summer.
| Temperature | 28°C (83°F) high | 4°C (39°F) low |
| Feels like | 30°C (86°F) high | 1°C (34°F) low |
| Rain | 70 days | 1392 mm (54.8 in) /yr |
| Snow | 0 days | 28 mm (1.1 in) /yr |
| Sky | 160 sunny | 49 stormy |
| Wind | 1.5 m/s (3.4 mph) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, May, Jun, Jul, Aug
Sky & Air by Month
Cloud cover (%)
62
Jan 54
Feb 53
Mar 51
Apr 54
May 34
Jun 48
Jul 42
Aug 50
Sep 44
Oct 51
Nov 53
Dec Humidity (%)
74
Jan 71
Feb 69
Mar 67
Apr 68
May 61
Jun 64
Jul 63
Aug 75
Sep 73
Oct 74
Nov 77
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 37 km Trieste Airport (TRS)
Ski resort 72 km Smučarski center Cerkno
National park 13 km Krajinski park Sečoveljske soline
Mountain peak
(1,503 m) 51 km Travica
Hospital 3 km Valdoltra Ortopedska Bolnišnica / Ospedale ortopedico Valdoltra
Hiking trail 3 km Beblerjeva pot
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 9°C 49°F | 5°C 41°F | 137 mm 5.4 in | — | 9 |
| February | 9°C 49°F | 4°C 39°F | 69 mm 2.7 in | 11 mm0.4 in | 11 |
| March | 13°C 56°F | 7°C 45°F | 205 mm 8.1 in | — | 11 |
| April | 17°C 63°F | 10°C 50°F | 92 mm 3.6 in | — | 11 |
| May | 20°C 68°F | 13°C 55°F | 130 mm 5.1 in | — | 12 |
| June | 28°C 83°F | 20°C 68°F | 6 mm 0.2 in | — | 18 |
| July | 27°C 81°F | 20°C 68°F | 134 mm 5.3 in | — | 13 |
| August | 28°C 82°F | 20°C 67°F | 112 mm 4.4 in | — | 18 |
| September | 23°C 74°F | 17°C 62°F | 175 mm 6.9 in | — | 13 |
| October | 17°C 63°F | 11°C 51°F | 162 mm 6.4 in | — | 17 |
| November | 13°C 56°F | 8°C 46°F | 143 mm 5.6 in | 17 mm0.7 in | 14 |
| December | 11°C 51°F | 5°C 42°F | 27 mm 1.1 in | 1 mm0.0 in | 13 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 9 | 2 |
| February | 11 | 1 |
| March | 11 | 7 |
| April | 11 | 5 |
| May | 12 | 5 |
| June | 18 | 0 |
| July | 13 | 6 |
| August | 18 | 6 |
| September | 13 | 7 |
| October | 17 | 5 |
| November | 14 | 5 |
| December | 13 | 0 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 12°C 53°F | 1°C 34°F |
| February | 11°C 51°F | 2°C 35°F |
| March | 12°C 54°F | 6°C 42°F |
| April | 16°C 61°F | 11°C 51°F |
| May | 21°C 71°F | 15°C 58°F |
| June | 27°C 80°F | 21°C 70°F |
| July | 28°C 82°F | 22°C 72°F |
| August | 26°C 80°F | 21°C 70°F |
| September | 25°C 77°F | 19°C 66°F |
| October | 22°C 72°F | 11°C 52°F |
| November | 18°C 64°F | 8°C 46°F |
| December | 14°C 57°F | 3°C 37°F |