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Trenčín Weather in September
September in Trenčín brings pleasant temperatures, with highs of 20°C (68°F) and nights dropping to 10°C (50°F). Rainfall is on the higher side this month, averaging around 82 mm (3.2 in), so keep a rain jacket handy.
Rainfall in Trenčín in September
Historically, the month has about 11 days of rain, averaging 82 mm (3.2 in) in total. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Trenčín in September
If you're visiting Trenčín in September, expect excellent temperatures with highs of 20°C (68°F) and overnight lows of 10°C (50°F). Conditions are often most pleasant around the middle of the day. With overnight lows of 10°C (50°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.If your ideal day consists of dry skies and pleasant temperatures, May, June, August and September typically offer the best circumstances for Trenčín.
Trenčín Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
20°C (68°F)
Chance of Rain
36%
Precipitation
82 mm (3.2 in)
Rainy days
11 days
Trenčín Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Trenčín - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Trenčín typically drop from around 22°C (72°F) at the start of September to approximately 18°C (64°F) by the end. Nights are cool, with lows typically ranging from 8°C (46°F) to 12°C (54°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 Trenčín in September
Browse day-by-day weather records for Trenčín spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Trenčín historical weather extremes in September
The extremes listed below come from historical weather data collected in Trenčín from 1976 through 2026.
- The hottest September day on record in Trenčín reached 34°C (93°F) (September 3, 2024).
- The lowest daytime temperature in September was 9°C (48°F), recorded on September 5, 2007.
- Nighttime temperatures dropped to 1°C (34°F) on September 22, 1997, marking the coldest September night on record.
Best Places in Slovakia in September
Find out more about the weather in Slovakia and which places have the best travel conditions in this month. See all of Slovakia 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 Trenčín in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes.
What To Do in Trenčín in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Camping4/10 -
Outdoor sports9/10
Trenčín 3-Day Forecast
More climate data for Trenčín
See the full Trenčín climate overview or explore weather in Slovakia.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bratislava
22°C (72°F) Košice21°C (70°F) Bešeňová
17°C (63°F) Demanovska Dolina17°C (63°F) Vysoké Tatry
17°C (63°F) Tatranská Lomnica17°C (63°F) Donovaly18°C (64°F) Liptovský Mikuláš17°C (63°F) Bucket list
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