Climate averages 1991–2020
Roubaix 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 Roubaix: daytime highs average 22.3°C and nights cool to about 14.1°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 72 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 32 min on an average August day.
The nearest other city in this atlas is Lille (11 km away). In August its highs average 22.5°C, about as warm as Roubaix, with 70 mm of rain.
Among the 57 cities listed in France, Roubaix ranks 53rd of 57 for the warmest August highs and 46th of 57 for the driest August (rainfall, lowest first). The mean August high of those 57 cities is 25.0°C; Roubaix is 2.7°C cooler than that mean.
From August to September, average highs fall by 3.2°C to 19.2°C, and monthly rainfall falls from 72 mm to 54 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
Roubaix climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.5°C1.6°C | 1.6°C | 64 | 12.1 | 8.59 h |
| February | 7.5°C1.6°C | 1.6°C | 54 | 11.2 | 10.010 h |
| March | 10.7°C3.2°C | 3.2°C | 53 | 11.4 | 11.812 h |
| April | 14.2°C5.3°C | 5.3°C | 47 | 11.1 | 13.814 h |
| May | 17.5°C8.9°C | 8.9°C | 62 | 11.8 | 15.515 h |
| June | 20.3°C11.8°C | 11.8°C | 61 | 10.7 | 16.416 h |
| July | 22.4°C14.1°C | 14.1°C | 65 | 11.2 | 16.016 h |
| August, selected | 22.3°C14.1°C | 14.1°C | 72 | 11.3 | 14.515 h |
| September | 19.2°C11.7°C | 11.7°C | 54 | 10.2 | 12.713 h |
| October | 15.0°C8.7°C | 8.7°C | 62 | 11.2 | 10.811 h |
| November | 10.1°C5.1°C | 5.1°C | 65 | 12.5 | 9.09 h |
| December | 6.9°C2.4°C | 2.4°C | 74 | 12.9 | 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
- Lille in AugustFrance · 11 kmHigh 22.5°C · Low 14.1°C · 70 mm rain
- Kortrijk in AugustBelgium · 16 kmHigh 22.1°C · Low 14.3°C · 72 mm rain
- Gent in AugustBelgium · 55 kmHigh 22.2°C · Low 14.4°C · 74 mm rain
- Brugge in AugustBelgium · 57 kmHigh 21.2°C · Low 15.2°C · 71 mm rain
- Mons in AugustBelgium · 61 kmHigh 22.4°C · Low 14.2°C · 70 mm rain
- Aalst in AugustBelgium · 66 kmHigh 22.4°C · Low 14.4°C · 74 mm rain
- Dunkirk in AugustFrance · 68 kmHigh 21.7°C · Low 14.9°C · 69 mm rain
- La Louvière in AugustBelgium · 75 kmHigh 22.0°C · Low 13.7°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 Roubaix) is explained once on the Roubaix year overview and on the Sources, method and limits page.
Kortrijk lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.