Bouillon Weather in September
Thinking of visiting Bouillon in September? Expect pleasant temperatures reaching 19°C (66°F) during the day, dropping to 10°C (50°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Bouillon in September
On average, there are about 15 days with rain during this month, averaging 78 mm (3.1 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Bouillon in September
September in Bouillon sees highs of 19°C (66°F) and lows of 10°C (50°F) overnight. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to 10°C (50°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Bouillon in September
You can expect a moderate amount of sunlight, with approximately 150 hours. This means a pleasant mix of sun and overcast.For Bouillon 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.
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 Bouillon's climate page.
Bouillon Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
19°C (66°F)
Chance of Rain
50%
Precipitation
78 mm (3.1 in)
Rainy days
15 days
Sunshine
150 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Bouillon typically stay consistent throughout September, with daily highs averaging around 19°C (66°F). Nights are cool, with lows typically ranging from 8°C (46°F) to 11°C (52°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 Bouillon in September
Browse day-by-day weather records for Bouillon spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Bouillon historical weather extremes in September
According to our 49 years of weather records for Bouillon, the following extremes were recorded between 1976 and 2025.
- Bouillon recorded its highest September temperature of 33°C (91°F) on September 15, 2020.
- The lowest daytime temperature in September was 8°C (46°F), recorded on September 22, 1984.
- The lowest overnight temperature recorded in September was -1°C (30°F) (September 30, 2003).
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 Bouillon 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. Rain gear is recommended, you can expect wet weather on multiple days. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Bouillon 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 Bouillon's climate page.
See the full Bouillon climate overview or explore weather in Belgium.
