Mechelen Weather in September
Mechelen in September averages 21°C (70°F) during the day and 12°C (54°F) at night. Some rainfall is typical for this time of year.
Rainfall in Mechelen in September
Typically, about 15 days will experience rainfall, with an average of 60 mm (2.4 in) for the month. With rain spread across many days but low totals, showers are typically short and light rather than heavy.
Temperature in Mechelen in September
September is a good time to be in Mechelen. Days are excellent, reaching 21°C (70°F), with nights around 12°C (54°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights drop to around 12°C (54°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Mechelen in September
With about 142 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.
Wind Speed in Mechelen 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.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Mechelen.
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 Mechelen's climate page.
Mechelen Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
21°C (70°F)
Chance of Rain
51%
Precipitation
60 mm (2.4 in)
Rainy days
15 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 Mechelen 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 Mechelen in September
Browse day-by-day weather records for Mechelen spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mechelen historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Mechelen.
- Mechelen recorded its highest September temperature of 34°C (93°F) on September 15, 2020.
- On September 22, 1996, Mechelen saw its coldest September day with temperatures maxing out at 10°C (50°F).
- The lowest overnight temperature recorded in September was 2°C (36°F) (September 30, 2018).
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
pleasant
tolerable
unpleasant
poor
What to Wear in Mechelen 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 Mechelen 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 Mechelen's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Mechelen climate overview or explore weather in Belgium.
