Go to Bovec in Slovenia
With mountains that linger in the blue sky, an emerald-green river Bovec offers picturesque scenes that are a must see for your bucket list.
Koper Weather in October
In Koper, October brings pleasant daytime temperatures around 19°C (66°F), with nights cooling to 12°C (54°F). Expect quite a bit of rainfall this month.
Rainfall in Koper in October
Typically, you can expect about 11 days of rain this month, with 167 mm (6.6 in) on average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Koper in October
In October, Koper gets pleasant temperatures, with highs of 19°C (66°F). Nights cool to around 12°C (54°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Koper in October
The city usually sees around 166 hours of sunlight, indicating a moderately sunny period.For Koper itself, June, July and August generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Koper Temperature in October
Min Temperature
12°C (54°F)
Max Temperature
19°C (66°F)
Chance of Rain
38%
Precipitation
167 mm (6.6 in)
Rainy days
11 days
Humidity
60% *
Sunshine
166 hours *
Percentage Sunshine
*
* Data from: Portorož, Slovenia (11 KM, 7 Miles).
Koper Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Koper - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Koper typically drop from around 21°C (70°F) at the start of October to approximately 17°C (63°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 13°C (55°F).
Average temperatures in October
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in October
Historical weather records for Koper in October
Browse day-by-day weather records for Koper spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Koper historical weather extremes in October
Based on 49 years of weather observations in Koper between 1976 and 2025, these are the recorded extremes.
- On October 2, 2011, temperatures climbed to 28°C (82°F), marking the warmest October day on record.
- Koper experienced its chilliest October day on October 28, 1997, reaching only 7°C (45°F).
- Koper registered its coldest October night on October 30, 1997, with temperatures dropping to -3°C (27°F).
Best Places in Slovenia in October
Find out more about the weather in Slovenia and which places have the best travel conditions in this month. See all of Slovenia in October →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Koper in October
For Koper in October, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Also bring a poncho, it will rain a lot! Waterproof everything you can. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Koper in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Camping6/10
Koper 3-Day Forecast
More climate data for Koper
Temperature Rainfall Sunshine Humidity
See the full Koper climate overview or explore weather in Slovenia.
Popular in October
Where to go in October - average daytime high across popular destinations.
Piran
19°C (66°F) Portorož19°C (66°F) Maribor
16°C (61°F) Ljubljana16°C (61°F) Bovec14°C (57°F) Bled14°C (57°F) Bohinj14°C (57°F) Kranjska Gora13°C (55°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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