Climate averages 1991–2020
's-Hertogenbosch weather
in September.
A mild, moderately wet month: the 4th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in 's-Hertogenbosch: daytime highs average 18.8°C and nights cool to about 11.8°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 61 mm of rain on roughly 11 days, which makes September a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 43 min on an average September day.
The nearest other city in this atlas is Oss (16 km away). In September its highs average 18.7°C, about as warm as 's-Hertogenbosch, with 62 mm of rain.
Among the 44 cities listed in the Netherlands, 's-Hertogenbosch ranks joint 7th of 44 for the warmest September highs and joint 4th of 44 for the driest September (rainfall, lowest first). The mean September high of those 44 cities is 18.4°C; 's-Hertogenbosch is 0.4°C warmer than that mean.
From September to October, average highs fall by 4.4°C to 14.4°C, and monthly rainfall rises from 61 mm to 63 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
's-Hertogenbosch climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.7°C1.2°C | 1.2°C | 63 | 12.5 | 8.48 h |
| February | 6.7°C1.1°C | 1.1°C | 56 | 11.1 | 9.910 h |
| March | 10.1°C2.9°C | 2.9°C | 56 | 11.6 | 11.812 h |
| April | 14.1°C5.4°C | 5.4°C | 47 | 10.6 | 13.814 h |
| May | 17.7°C9.3°C | 9.3°C | 58 | 11.6 | 15.616 h |
| June | 20.4°C12.2°C | 12.2°C | 62 | 10.9 | 16.617 h |
| July | 22.4°C14.5°C | 14.5°C | 76 | 13.5 | 16.216 h |
| August | 22.2°C14.4°C | 14.4°C | 76 | 12.5 | 14.615 h |
| September, selected | 18.8°C11.8°C | 11.8°C | 61 | 11.2 | 12.713 h |
| October | 14.4°C8.5°C | 8.5°C | 63 | 11.6 | 10.711 h |
| November | 9.5°C4.9°C | 4.9°C | 62 | 12.3 | 8.99 h |
| December | 6.2°C2.0°C | 2.0°C | 70 | 13.1 | 7.98 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Oss in SeptemberThe Netherlands · 16 kmHigh 18.7°C · Low 11.8°C · 62 mm rain
- Tilburg in SeptemberThe Netherlands · 22 kmHigh 18.9°C · Low 11.7°C · 62 mm rain
- Eindhoven in SeptemberThe Netherlands · 31 kmHigh 19.1°C · Low 11.8°C · 62 mm rain
- Helmond in SeptemberThe Netherlands · 35 kmHigh 19.1°C · Low 11.6°C · 60 mm rain
- Breda in SeptemberThe Netherlands · 39 kmHigh 18.8°C · Low 11.9°C · 61 mm rain
- Nijmegen in SeptemberThe Netherlands · 41 kmHigh 18.7°C · Low 11.9°C · 61 mm rain
- Dordrecht in SeptemberThe Netherlands · 45 kmHigh 18.6°C · Low 11.8°C · 61 mm rain
- Utrecht in SeptemberThe Netherlands · 45 kmHigh 18.3°C · Low 11.7°C · 65 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for 's-Hertogenbosch) is explained once on the 's-Hertogenbosch year overview and on the Sources, method and limits page.