Leuven Weather in September
During September, Leuven experiences pleasant daytime temperatures of 21°C (70°F) and cooler nights around 11°C (52°F). Expect quite a bit of rainfall. Around 62 mm (2.4 in) is typical.
Rainfall in Leuven in September
Based on our climate data of the past 30 years, about 14 days of rain are anticipated, with 62 mm (2.4 in) on average. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Leuven in September
September is one of the better months to visit Leuven. Expect 21°C (70°F) during the day and 11°C (52°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights cool down to 11°C (52°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Leuven in September
You can expect a moderate amount of sunlight, with approximately 142 hours. This means a pleasant mix of sun and overcast.
Wind Speed in Leuven in September
Wind speeds average 3 m/s (6 knots) during September. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for Leuven.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Belgium, check out our Leuven's climate page.
Leuven Temperature in September
Min Temperature
11°C (52°F)
Max Temperature
21°C (70°F)
Chance of Rain
47%
Precipitation
62 mm (2.4 in)
Rainy days
14 days
Humidity
77% *
Windspeed
3 m/s (6 knots) *
Sunshine
142 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Leuven typically stay consistent throughout September, with daily highs averaging around 21°C (70°F). Nights are cool, with lows typically ranging from 10°C (50°F) to 13°C (55°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 Leuven in September
Browse day-by-day weather records for Leuven spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Leuven historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Leuven.
- Leuven recorded its highest September temperature of 34°C (93°F) on September 15, 2020.
- On September 22, 1996, Leuven saw its coldest September day with temperatures maxing out at 10°C (50°F).
- The coldest night in September in Leuven was on September 30, 2018, with a minimum of 2°C (36°F).
Best Places in Belgium in September
Find out more about the weather in Belgium and which places have the best travel conditions in this month. See all of Belgium in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Leuven 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. Wet weather is likely, so pack waterproof gear for multiple rainy days. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Leuven 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 Belgium, check out our Leuven's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Leuven climate overview or explore weather in Belgium.
