Climate averages 1991–2020
Boulogne-Billancourt weather
in July.
A warm, moderately wet month: the 2nd warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Boulogne-Billancourt: daytime highs average 24.1°C and nights cool to about 15.2°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 55 mm of rain on roughly 9 days, which makes July a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 44 min on an average July day.
The nearest other city in this atlas is Paris 15 Vaugirard (4 km away). In July its highs average 24.2°C, about as warm as Boulogne-Billancourt, with 55 mm of rain.
Among the 57 cities listed in France, Boulogne-Billancourt ranks joint 30th of 57 for the warmest July highs and joint 28th of 57 for the driest July (rainfall, lowest first). The mean July high of those 57 cities is 24.9°C; Boulogne-Billancourt is 0.8°C cooler than that mean.
From July to August, average highs rise by 0.2°C to 24.2°C, and monthly rainfall rises from 55 mm to 56 mm.
The annual picture
July 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
Boulogne-Billancourt climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.3°C2.3°C | 2.3°C | 52 | 11.3 | 8.89 h |
| February | 8.4°C2.1°C | 2.1°C | 48 | 10.0 | 10.110 h |
| March | 11.9°C4.0°C | 4.0°C | 50 | 10.5 | 11.912 h |
| April | 15.1°C6.3°C | 6.3°C | 50 | 10.6 | 13.714 h |
| May | 18.6°C9.9°C | 9.9°C | 66 | 11.3 | 15.215 h |
| June | 21.8°C13.1°C | 13.1°C | 57 | 10.6 | 16.116 h |
| July, selected | 24.1°C15.2°C | 15.2°C | 55 | 9.4 | 15.716 h |
| August | 24.2°C15.2°C | 15.2°C | 56 | 9.0 | 14.414 h |
| September | 20.7°C12.3°C | 12.3°C | 47 | 8.3 | 12.613 h |
| October | 16.1°C9.5°C | 9.5°C | 62 | 11.2 | 10.911 h |
| November | 10.8°C5.6°C | 5.6°C | 58 | 11.3 | 9.29 h |
| December | 7.7°C2.9°C | 2.9°C | 68 | 12.5 | 8.38 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
July in nearby cities
- Paris 15 Vaugirard in JulyFrance · 4 kmHigh 24.2°C · Low 15.1°C · 55 mm rain
- Paris in JulyFrance · 8 kmHigh 24.1°C · Low 14.9°C · 55 mm rain
- Paris 13 Gobelins in JulyFrance · 8 kmHigh 24.1°C · Low 15.0°C · 55 mm rain
- Versailles in JulyFrance · 9 kmHigh 23.4°C · Low 14.5°C · 55 mm rain
- Paris 20 Ménilmontant in JulyFrance · 12 kmHigh 23.8°C · Low 14.6°C · 55 mm rain
- Argenteuil in JulyFrance · 13 kmHigh 24.0°C · Low 15.0°C · 52 mm rain
- Créteil in JulyFrance · 17 kmHigh 24.2°C · Low 15.1°C · 55 mm rain
- Saint-Quentin-en-Yvelines in JulyFrance · 18 kmHigh 23.3°C · Low 14.2°C · 55 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 Boulogne-Billancourt) is explained once on the Boulogne-Billancourt year overview and on the Sources, method and limits page.
Paris, Paris 15 Vaugirard and Paris 13 Gobelins lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.