Cluj-Napoca Weather in September
Thinking of visiting Cluj-Napoca in September? Expect pleasant temperatures reaching 21°C (70°F) during the day, dropping to 9°C (48°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Cluj-Napoca in September
Analyzing past climate data, one can expect approximately 9 days of rain, averaging 76 mm (3 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Cluj-Napoca in September
September is a good time to be in Cluj-Napoca. Days are perfect, reaching 21°C (70°F), with nights around 9°C (48°F). Conditions are often most pleasant around the middle of the day. At 9°C (48°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Cluj-Napoca in September
Expect a lot of sunshine this month, with about 196 hours of sun. These sunny conditions add to the overall experience.
Wind Speed in Cluj-Napoca in September
Wind speeds average 1 m/s (2 knots) during September. At this speed, you'll experience mostly light air movement that's just barely noticeable. As an average, some days will be completely calm while others have gentle breezes you can feel on your skin.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Romania, check out our Cluj-Napoca's climate page.
Cluj-Napoca Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
21°C (70°F)
Chance of Rain
31%
Precipitation
76 mm (3 in)
Rainy days
9 days
Humidity
78%
Windspeed
1 m/s (2 knots)
Sunshine
196 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cluj-Napoca 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 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 for Cluj-Napoca in September
Browse day-by-day weather records for Cluj-Napoca spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cluj-Napoca historical weather extremes in September
Based on 49 years of weather observations in Cluj-Napoca between 1976 and 2025, these are the recorded extremes.
- The warmest day in September was on September 1, 2015, with a maximum of 34°C (93°F).
- The lowest daytime temperature in September was 8°C (46°F), recorded on September 19, 2008.
- The lowest overnight temperature recorded in September was -4°C (25°F) (September 29, 1977).
Best Places in Romania in September
Find out more about the weather in Romania and which places have the best travel conditions in this month. See all of Romania in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Cluj-Napoca in September
For Cluj-Napoca 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. Rain is likely on several days, so bring a good rain jacket. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Cluj-Napoca 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 Romania, check out our Cluj-Napoca's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Cluj-Napoca climate overview or explore weather in Romania.
