Nova Gorica Weather in September
September in Nova Gorica sees daytime temperatures around 22°C (72°F) and lows of 13°C (55°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.
Rainfall in Nova Gorica in September
As part of the rainy season, Nova Gorica sees around 12 days of rain in September, with an average of 183 mm (7.2 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.
Temperature in Nova Gorica in September
In September, Nova Gorica sees high temperatures, with highs of 22°C (72°F). Nights drop to around 13°C (55°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 13°C (55°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Nova Gorica in September
With approximately 211 hours of sunshine, the days are filled with clear skies during the day. Rain typically falls in the afternoon or evening, keeping mornings and early parts of the day sunny.If you prefer enjoying temperate temperatures and rain-free days, May, 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 Nova Gorica's climate page.
Nova Gorica Temperature in September
Min Temperature
13°C (55°F)
Max Temperature
22°C (72°F)
Chance of Rain
41%
Precipitation
183 mm (7.2 in)
Rainy days
12 days
Humidity
67% *
Sunshine
211 hours *
Percentage Sunshine
54% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Nova Gorica typically drop from around 26°C (79°F) at the start of September to approximately 22°C (72°F) by the end. Nights are cool, with lows typically ranging from 11°C (52°F) to 15°C (59°F).
Average temperatures in September
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 September
Historical weather for Nova Gorica in September
Browse day-by-day weather records for Nova Gorica spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Nova Gorica historical weather extremes in September
Our historical data for Nova Gorica spans 1976 to 2025, revealing these weather extremes.
- The warmest day in September was on September 22, 1985, with a maximum of 35°C (95°F).
- The coldest September day was on September 18, 1977, with a maximum of 11°C (52°F).
- The lowest overnight temperature recorded in September was 2°C (36°F) (September 30, 1977).
Best Places in Slovenia in September
Find out more about the weather in Slovenia and which places have the best travel conditions in this month. See all of Slovenia in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Nova Gorica in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Nova Gorica in September
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 Nova Gorica's climate page.
Temperature Rainfall Sunshine Humidity
See the full Nova Gorica climate overview or explore weather in Slovenia.
