Koper Weather in March
Koper in March sees moderate temperatures, with highs around 13°C (55°F) and overnight lows of 6°C (43°F). Rainfall is fairly high at around 92 mm (3.6 in) on average, so pack waterproofs just in case.
Rainfall in Koper in March
Expect around 12 days of rain based on historical data, with 92 mm (3.6 in) average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Koper in March
March in Koper sees highs of 13°C (55°F) and lows of 6°C (43°F) overnight. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 6°C (43°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Koper in March
The month brings about 173 hours of sunlight, offering a comfortable mix of sun and overcast.If you prefer enjoying temperate temperatures and rain-free days, June, July and August typically offer 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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Slovenia, check out our Koper's climate page.
Koper Temperature in March
Min Temperature
6°C (43°F)
Max Temperature
13°C (55°F)
Chance of Rain
38%
Precipitation
92 mm (3.6 in)
Rainy days
12 days
Humidity
57% *
Sunshine
173 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Koper typically rise from around 12°C (54°F) at the start of March to approximately 15°C (59°F) by the end. Nights are cold, with lows typically ranging from 3°C (37°F) to 7°C (45°F).
Average temperatures in March
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 March
Historical weather for Koper in March
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 March
Based on 50 years of weather observations in Koper between 1976 and 2026, these are the recorded extremes.
- The hottest March day on record in Koper reached 23°C (73°F) (March 28, 1981).
- Koper experienced its chilliest March day on March 1, 2018, reaching only 1°C (34°F).
- The lowest overnight temperature recorded in March was -10°C (14°F) (March 2, 2005).
Best Places in Slovenia in March
Find out more about the weather in Slovenia and which places have the best travel conditions in this month. See all of Slovenia in March →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Koper in March
The weather can be unpredictable in March, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Koper in March
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Slovenia, check out our Koper's climate page.
Temperature Rainfall Sunshine Humidity
See the full Koper climate overview or explore weather in Slovenia.
