Koper, Slovenia Weather

  1. Koper, Slovenia Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Koper over the next 12 hours
  7. Temperature and possibility of rain in Koper in the coming days
  8. Rainfall in Koper in the coming days
  9. Koper Weather Summary
  10. Weather averages by month
  11. Koper's weather
  12. Frequently asked questions
  13. Comments
Koper, Weather
(Photo by Neven Krcmarek on Unsplash)

Current conditions

Updated:
12°C
53.6°F
°C °F

Condition: Partly Cloudy

Pressure: 1,010 hPa

Feel like: 11 °C

Temperature: 12°C

Cloud: 74%

Humidity: 61%

Wind: SSE - 3 km/h

Visibility: 65.5 km

Weather forecast

Sun
09 Nov
8°C / 16°C
Mainly Clear
Mon
10 Nov
3°C / 14°C
Overcast
Tue
11 Nov
1°C / 14°C
Partly Cloudy
Wed
12 Nov
1°C / 14°C
Mainly Clear
Thu
13 Nov
2°C / 14°C
Overcast
Hourly forecast today:
16:00 PM
5° / 12°
5° / 12°
Partly Cloudy
61% 15 km/h
17:00 PM
5° / 11°
5° / 11°
Partly Cloudy
66% 7 km/h
18:00 PM
5° / 9°
5° / 9°
Partly Cloudy
73% 7 km/h
19:00 PM
5° / 8°
5° / 8°
Partly Cloudy
77% 7 km/h
20:00 PM
4° / 7°
4° / 7°
Partly Cloudy
80% 7 km/h
21:00 PM
4° / 7°
4° / 7°
Partly Cloudy
82% 7 km/h
22:00 PM
3° / 6°
3° / 6°
Clear Sky
86% 7 km/h
23:00 PM
3° / 5°
3° / 5°
Clear Sky
85% 7 km/h
00:00 AM
3° / 5°
3° / 5°
Clear Sky
84% 8 km/h
01:00 AM
5° / 7°
5° / 7°
Clear Sky
82% 12 km/h
02:00 AM
5° / 7°
5° / 7°
Clear Sky
83% 12 km/h

30 Day Averages and Extremes

  • Average high 15.73°C
  • Average low 7.87°C
  • Hottest day 20°C (01 November 2025)
  • Coldest day 0°C (21 November 2025)
  • Average humidity 74.37%
  • Days with precipitation 20 days
  • Highest precipitation 72 mm (29 October 2025)

Yesterday's Data

  • Max: 16°C
  • Min: 6°C
  • Total Precipitation: 0 mm

Temperature and possibility of rain in Koper over the next 12 hours

Temperature and possibility of rain in Koper in the coming days

Rainfall in Koper in the coming days

Koper Climate Summary

Koper features a Marine west coast, warm summer (Köppen classification: Cfb), with an average annual temperature of 14.88ºC (58.78ºF), which is about 3.08% higher than the national average for Slovenia. Annually, the city experiences approximately 207.17 millimeters (8.16 inches) of rainfall, spread across 177.0 rainy days, accounting for 48.49% of the year.

Longitude 45.548059
Latitude 13.7301877
Yearly high temperature 17.59ºC (63.66ºF)
Yearly low temperature 9.17ºC (48.51ºF)
Hottest month July 27.91ºC (82.24ºF)
Coldest month January -0.16ºC (31.71ºF)
Yearly precip 207.17mm (8.16in)
Days with rainfall 177.0 days (48.49%)
Driest month April (71.76%)
Wettest month November (80.06%)

Weather averages by month

Month High / Low (°C) Rain
January 7.62° / -0.16° 11.91 days
February 8.52° / 0.28° 13.64 days
March 12.35° / 3.56° 13.45 days
April 16.88° / 7.76° 14.18 days
May 20.28° / 11.1° 21.36 days
June 25.42° / 16.28° 17.73 days
July 27.91° / 19.37° 16.64 days
August 28.45° / 19.57° 13.0 days
September 23.31° / 15.15° 14.45 days
October 18.05° / 9.71° 13.82 days
November 13.32° / 5.65° 14.73 days
December 9.02° / 1.79° 12.09 days

Koper's weather

Frequently asked questions

1. What is the hottest month in Koper?

July has the highest average monthly temperature (daily mean of 27.91ºC) and January are the coolest (daily mean of -0.16ºC).

2. What should I wear in Koper today?

For today's mild weather in Koper, with temperatures between 12ºC to 15ºC (53.6ºF to 59.0ºF), consider wearing:
- Lightweight sweater or cardigan
- Cotton socks
- Scarf (optional)
- Long-sleeve shirt or blouse

Temperature

Early
3°C / 7°C
Morning
5°C / 13°C
Afternoon
4°C / 14°C
Evening
4°C / 7°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 448
  • CO 182
  • NH3 0
  • NO2 5
  • O3 63
  • PM10 12
  • PM25 10
  • SO2 0
  • CH4 1,444

Sunrise / Sunset

05:56
15:41