🇸🇮 Weather in Koper
Map Overlays:
Hourly Forecast for Koper
21:00
19°
9%
22:00
18°
9%
23:00
18°
9%
00:00
17°
8%
01:00
17°
7%
02:00
17°
7%
03:00
16°
8%
04:00
16°
9%
05:00
16°
8%
06:00
15°
22%
07:00
17°
22%
08:00
20°
17%
09:00
21°
25%
10:00
23°
20%
11:00
26°
10%
12:00
26°
17%
13:00
26°
4%
14:00
26°
17%
15:00
26°
9%
16:00
26°
17%
17:00
26°
17%
18:00
25°
18%
19:00
23°
29%
20:00
20°
30%
14-Day Forecast for Koper
2026-06-09
Sunny
28° /
17°
2026-06-10
Patchy rain nearby
26° /
15°
2026-06-11
Patchy rain nearby
19° /
11°
2026-06-12
Sunny
24° /
10°
2026-06-13
Partly Cloudy
25° /
12°
2026-06-14
Patchy rain nearby
25° /
13°
2026-06-15
Partly Cloudy
25° /
14°
Additional Forecasts for Koper
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 150.0 μg/m³
O₃ (Ozone) 92.0 μg/m³
NO₂ (Nitrogen Dioxide) 12.3 μg/m³
SO₂ (Sulphur Dioxide) 1.2 μg/m³
PM2.5 (Fine particles) 8.6 μg/m³
PM10 (Coarse particles) 13.8 μg/m³
Historical Weather
Weather Forecasts for Other Cities in Slovenia
Weather in Koper — FAQ
Answers refreshed each request based on current conditions in Koper.
What is the weather like right now in Koper?
Right now in Koper, Slovenia the temperature is 22.1°C (feels like 24.6°C), with sunny. Relative humidity is 78% and wind is 4.3 km/h.
What is today's high and low temperature in Koper?
Today's forecast high in Koper is 27.7°C and the overnight low is 17.1°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Koper today?
The chance of precipitation in Koper today is 6%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Koper differ from nearby cities?
Even short distances can change temperatures noticeably. Koper's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.