Climate averages 1991–2020
Maastricht weather
in September.
A mild, moderately wet month: the 4th warmest and the joint 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Maastricht: daytime highs average 19.0°C and nights cool to about 11.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 64 mm of rain on roughly 11 days, which makes September a moderately wet month (the joint 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 41 min on an average September day.
The nearest other city in this atlas is Heerlen (21 km away). In September its highs average 18.8°C, about as warm as Maastricht, with 57 mm of rain.
Among the 44 cities listed in the Netherlands, Maastricht ranks 4th of 44 for the warmest September highs and joint 13th of 44 for the driest September (rainfall, lowest first). The mean September high of those 44 cities is 18.4°C; Maastricht is 0.6°C warmer than that mean.
From September to October, average highs fall by 4.5°C to 14.5°C, and monthly rainfall rises from 64 mm to 65 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
Maastricht climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.6°C0.9°C | 0.9°C | 76 | 13.5 | 8.58 h |
| February | 6.7°C0.9°C | 0.9°C | 69 | 12.5 | 10.010 h |
| March | 10.3°C2.8°C | 2.8°C | 69 | 13.7 | 11.812 h |
| April | 14.2°C5.3°C | 5.3°C | 54 | 11.2 | 13.814 h |
| May | 17.9°C9.2°C | 9.2°C | 64 | 12.5 | 15.515 h |
| June | 20.7°C12.2°C | 12.2°C | 74 | 12.9 | 16.416 h |
| July | 22.7°C14.4°C | 14.4°C | 80 | 13.2 | 16.016 h |
| August | 22.6°C14.3°C | 14.3°C | 77 | 12.1 | 14.615 h |
| September, selected | 19.0°C11.6°C | 11.6°C | 64 | 10.5 | 12.713 h |
| October | 14.5°C8.5°C | 8.5°C | 65 | 12.1 | 10.811 h |
| November | 9.6°C4.7°C | 4.7°C | 70 | 13.0 | 9.09 h |
| December | 6.2°C2.0°C | 2.0°C | 87 | 14.5 | 8.08 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
- Heerlen in SeptemberThe Netherlands · 21 kmHigh 18.8°C · Low 11.4°C · 57 mm rain
- Liège in SeptemberBelgium · 25 kmHigh 19.0°C · Low 11.6°C · 62 mm rain
- Hasselt in SeptemberBelgium · 26 kmHigh 19.1°C · Low 11.6°C · 58 mm rain
- Aachen in SeptemberGermany · 29 kmHigh 18.4°C · Low 11.2°C · 66 mm rain
- Düren in SeptemberGermany · 57 kmHigh 18.7°C · Low 11.1°C · 61 mm rain
- Mönchengladbach in SeptemberGermany · 65 kmHigh 19.1°C · Low 11.7°C · 66 mm rain
- Viersen in SeptemberGermany · 67 kmHigh 19.1°C · Low 11.8°C · 66 mm rain
- Venlo in SeptemberThe Netherlands · 67 kmHigh 19.2°C · Low 11.7°C · 64 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 Maastricht) is explained once on the Maastricht year overview and on the Sources, method and limits page.