Climate averages 1991–2020
Mons weather
in August.
A warm, moderately wet month: the 2nd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Mons: daytime highs average 22.4°C and nights cool to about 14.2°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 70 mm of rain on roughly 11 days, which makes August a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 31 min on an average August day.
The nearest other city in this atlas is La Louvière (17 km away). In August its highs average 22.0°C, about as warm as Mons, with 72 mm of rain.
Among the 18 cities listed in Belgium, Mons ranks joint 9th of 18 for the warmest August highs and 1st of 18 for the driest August (rainfall, lowest first). The mean August high of those 18 cities is 22.3°C; Mons is 0.1°C warmer than that mean.
From August to September, average highs fall by 3.3°C to 19.1°C, and monthly rainfall falls from 70 mm to 52 mm.
The annual picture
August 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
Mons climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.1°C1.4°C | 1.4°C | 67 | 12.6 | 8.59 h |
| February | 7.2°C1.3°C | 1.3°C | 61 | 11.4 | 10.010 h |
| March | 10.6°C3.1°C | 3.1°C | 58 | 11.7 | 11.812 h |
| April | 14.2°C5.4°C | 5.4°C | 49 | 11.6 | 13.814 h |
| May | 17.6°C9.0°C | 9.0°C | 65 | 12.6 | 15.415 h |
| June | 20.5°C12.0°C | 12.0°C | 63 | 11.4 | 16.416 h |
| July | 22.5°C14.2°C | 14.2°C | 67 | 11.4 | 16.016 h |
| August, selected | 22.4°C14.2°C | 14.2°C | 70 | 11.3 | 14.515 h |
| September | 19.1°C11.6°C | 11.6°C | 52 | 10.1 | 12.713 h |
| October | 14.8°C8.7°C | 8.7°C | 60 | 11.5 | 10.811 h |
| November | 9.8°C5.0°C | 5.0°C | 64 | 11.7 | 9.19 h |
| December | 6.6°C2.2°C | 2.2°C | 78 | 13.5 | 8.18 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
August in nearby cities
- La Louvière in AugustBelgium · 17 kmHigh 22.0°C · Low 13.7°C · 72 mm rain
- Charleroi in AugustBelgium · 35 kmHigh 22.1°C · Low 13.9°C · 76 mm rain
- Anderlecht in AugustBelgium · 50 kmHigh 22.6°C · Low 14.3°C · 73 mm rain
- Ixelles in AugustBelgium · 51 kmHigh 22.2°C · Low 13.9°C · 73 mm rain
- Brussels in AugustBelgium · 52 kmHigh 22.5°C · Low 14.2°C · 73 mm rain
- Aalst in AugustBelgium · 54 kmHigh 22.4°C · Low 14.4°C · 74 mm rain
- Schaerbeek in AugustBelgium · 55 kmHigh 22.5°C · Low 14.2°C · 75 mm rain
- Roubaix in AugustFrance · 61 kmHigh 22.3°C · Low 14.1°C · 72 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 Mons) is explained once on the Mons year overview and on the Sources, method and limits page.