Climate averages 1991–2020
Boulogne-Billancourt weather
in April.
A mild, moderately wet month: the 7th warmest and the joint 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a mild month in Boulogne-Billancourt: daytime highs average 15.1°C and nights cool to about 6.3°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 50 mm of rain on roughly 11 days, which makes April a moderately wet month (the joint 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 40 min on an average April day.
The nearest other city in this atlas is Paris 15 Vaugirard (4 km away). In April its highs average 15.1°C, about as warm as Boulogne-Billancourt, with 50 mm of rain.
Among the 57 cities listed in France, Boulogne-Billancourt ranks joint 24th of 57 for the warmest April highs and joint 5th of 57 for the driest April (rainfall, lowest first). The mean April high of those 57 cities is 15.4°C; Boulogne-Billancourt is 0.3°C cooler than that mean.
From April to May, average highs rise by 3.5°C to 18.6°C, and monthly rainfall rises from 50 mm to 66 mm.
The annual picture
April 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, selected | 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 | 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
April in nearby cities
- Paris 15 Vaugirard in AprilFrance · 4 kmHigh 15.1°C · Low 6.0°C · 50 mm rain
- Paris in AprilFrance · 8 kmHigh 15.1°C · Low 5.8°C · 50 mm rain
- Paris 13 Gobelins in AprilFrance · 8 kmHigh 15.0°C · Low 5.9°C · 50 mm rain
- Versailles in AprilFrance · 9 kmHigh 14.4°C · Low 5.6°C · 50 mm rain
- Paris 20 Ménilmontant in AprilFrance · 12 kmHigh 14.8°C · Low 5.5°C · 51 mm rain
- Argenteuil in AprilFrance · 13 kmHigh 15.1°C · Low 6.0°C · 51 mm rain
- Créteil in AprilFrance · 17 kmHigh 15.1°C · Low 6.0°C · 51 mm rain
- Saint-Quentin-en-Yvelines in AprilFrance · 18 kmHigh 14.3°C · Low 5.2°C · 52 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.