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.
Tolmin Weather in September
Tolmin in September sees pleasant daytime temperatures of 20°C (68°F) and nighttime lows of 10°C (50°F). As part of the rainy season, showers are frequent and often heavy. Budget around 183 mm (7.2 in) of rainfall for the month.
Rainfall in Tolmin in September
Tolmin is in the rainy season in September, with rain on around 14 days and an average of 183 mm (7.2 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.
Temperature in Tolmin in September
In September, expect pleasant temperatures in Tolmin, with highs of 20°C (68°F) and lows of 10°C (50°F) at night. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 10°C (50°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Tolmin in September
The area enjoys a moderate level of sunlight, with around 168 hours. It's a good balance between sunny and rainy days.For Tolmin 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.
Tolmin Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
20°C (68°F)
Chance of Rain
45%
Precipitation
183 mm (7.2 in)
Rainy days
14 days
Humidity
72% *
Sunshine
168 hours *
Percentage Sunshine
49% *
* Data from: Udine, Italy (58 KM, 36 Miles).
Tolmin Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Tolmin - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Tolmin typically drop from around 23°C (73°F) at the start of September to approximately 19°C (66°F) by the end. Nights are cool, with lows typically ranging from 7°C (45°F) to 10°C (50°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 records for Tolmin in September
Browse day-by-day weather records for Tolmin spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Tolmin historical weather extremes in September
Based on weather observations in Tolmin between 1976 and 2026, these are the recorded extremes during September.
- On September 22, 1985, temperatures climbed to 35°C (95°F), marking the warmest September day on record.
- Tolmin experienced its chilliest September day on September 19, 2017, reaching only 5°C (41°F).
- Tolmin registered its coldest September night on September 28, 2002, with temperatures dropping to -2°C (28°F).
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
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 Tolmin in September
For Tolmin in September, 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 Tolmin in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Camping6/10
Tolmin 3-Day Forecast
More climate data for Tolmin
Temperature Rainfall Sunshine Humidity
See the full Tolmin climate overview or explore weather in Slovenia.
Popular in September
Where to go in September - average daytime high across popular destinations.
Piran
24°C (75°F) Portorož24°C (75°F) Maribor
21°C (70°F) Ljubljana21°C (70°F) Bled19°C (66°F) Bovec19°C (66°F) Bohinj19°C (66°F) Kranjska Gora18°C (64°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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