AI-generatedBoulogne-Billancourt at a glance
- Best time
- Apr – Sep
- Warmest month
- Jul · 26°
- Sunshine a year
- 1,710 h
- Rain a year
- 694 mm
- Climate
- Temperate
- Time zone
- UTC+1 / UTC+2
- Elevation
- 35 m
Climate in Boulogne-Billancourt
Boulogne-Billancourt has a temperate climate with warm summers and cool winters. July is the warmest month with average highs of 26 °C, while January is the coolest at 8 °C. With around 1,710 hours of sunshine a year, Boulogne-Billancourt is moderately sunny; July is the sunniest month with 7.2 hours a day.
Holiday weather through the year
Best time to visit Boulogne-Billancourt
The best time to visit Boulogne-Billancourt is from April to September. For sightseeing, day trips and hiking, conditions are most comfortable from April to October. The wettest month is December with 70 mm of precipitation.
Boulogne-Billancourt through the seasons
How the weather changes over the seasons, with averages for each.
Boulogne-Billancourt in spring
Mar – May
Good
- 13–21 °C by day
- 5.6 h of sun a day
- 34 rainy days in all
Boulogne-Billancourt in summer
Jun – Aug
Excellent
- 24–26 °C by day
- 7.0 h of sun a day
- 29 rainy days in all
Boulogne-Billancourt in autumn
Sep – Nov
Fair
- 12–22 °C by day
- 4.0 h of sun a day
- 32 rainy days in all
Boulogne-Billancourt in winter
Dec – Feb
Poor
- 8–9 °C by day
- 2.2 h of sun a day
- 34 rainy days in all
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Apr – Oct
15–28 °C and not too much rain
Rainy months
Dec
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Boulogne-Billancourt for you.
Your best months: May – June, September
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Good
Best time to visit: April – September
Good forSightseeing & walks
A typical day in October
- Morning, 08:00: about 11°
- Midday, 13:00: about 16°
- Afternoon, 16:00: about 17°
- Evening, 20:00: about 14°
- Night, 23:00: about 13°
08:0919:04
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:50–08:53 · evening 18:21–19:23
- Blue hour
- Morning 07:38–07:50 · evening 19:23–19:36
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Boulogne-Billancourt compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 19° at the start of the month to 14° at the end. The days get 1.7 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 19° | 14° |
| Night-time low | 12° | 8° |
| Daylight | 11.7 h | 10.0 h |
What is the weather like in Boulogne-Billancourt in October?
In October, Boulogne-Billancourt is mild: daytime highs average 17 °C, and nights cool down to about 10 °C. The sun is scarce, with only about 3.8 hours a day. Rain is frequent, with about 12 rainy days and 69 mm in total. All in all, October is a good month for a holiday in Boulogne-Billancourt.
More details for October
- Daylight
- 10 h 54 min08:09 – 19:04
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 69 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+2offset from UTC
How the score comes together
- Temperatureweight 50 %90 %
- Sunshineweight 20 %13 %
- Few rainy daysweight 30 %44 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Compare two months in Boulogne-Billancourt
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
July has the better holiday weather in Boulogne-Billancourt: score 82 against 61. In July, days are 9 °C warmer than in October. July has 3 fewer rainy days. The sun shines 3 hours longer a day in July.
| Month | October | July |
|---|---|---|
| Holiday weather score | 61 | 82better |
| Daytime high | 17° | 26° |
| Night-time low | 10° | 17° |
| Sunshine | 3.8 h | 7.2 hbetter |
| Rainy days | 12 | 9better |
| Rainfall | 69 mm | 57 mmbetter |
| Muggy days | 0better | 1 |
Based on the climate averages 1996–2025.
Boulogne-Billancourt month by month
The typical weather for every month at a glance.
14January8° · 1.9 h
In January, Boulogne-Billancourt is cold: daytime highs average 8 °C, and nights cool down to about 4 °C. The sun is scarce, with only about 1.9 hours a day. Rain is frequent, with about 12 rainy days and 55 mm in total. All in all, January is not an ideal month for a holiday in Boulogne-Billancourt.
Boulogne-Billancourt in January23February9° · 2.9 h
In February, Boulogne-Billancourt is cold: daytime highs average 9 °C, and nights cool down to about 4 °C. The sun is scarce, with only about 2.9 hours a day. Rain is frequent, with about 10 rainy days and 48 mm in total. All in all, February is not an ideal month for a holiday in Boulogne-Billancourt.
Boulogne-Billancourt in February45March13° · 4.3 h
In March, Boulogne-Billancourt is cool: daytime highs average 13 °C, and nights cool down to about 6 °C. Expect around 4.3 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 53 mm in total. All in all, March is a so-so month for a holiday in Boulogne-Billancourt.
Boulogne-Billancourt in March71April17° · 5.9 h
In April, Boulogne-Billancourt is mild: daytime highs average 17 °C, and nights cool down to about 8 °C. Expect around 5.9 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 50 mm in total. All in all, April is a good month for a holiday in Boulogne-Billancourt.
Boulogne-Billancourt in April75May21° · 6.5 h
In May, Boulogne-Billancourt is mild: daytime highs average 21 °C, and nights cool down to about 12 °C. The sun shines for around 6.5 hours a day. Rain is frequent, with about 12 rainy days and 65 mm in total. All in all, May is a good month for a holiday in Boulogne-Billancourt.
Boulogne-Billancourt in May78June24° · 6.8 h
In June, Boulogne-Billancourt is warm: daytime highs average 24 °C, and nights cool down to about 15 °C. The sun shines for around 6.8 hours a day. Rain is frequent, with about 11 rainy days and 61 mm in total. All in all, June is a good month for a holiday in Boulogne-Billancourt.
Boulogne-Billancourt in June82July26° · 7.2 h
In July, Boulogne-Billancourt is warm: daytime highs average 26 °C, and nights cool down to about 17 °C. The sun shines for around 7.2 hours a day. Rain is frequent, with about 9 rainy days and 57 mm in total. On about 5 days the thermometer climbs to 30 °C or more. All in all, July is an excellent month for a holiday in Boulogne-Billancourt.
Boulogne-Billancourt in July82August26° · 6.9 h
In August, Boulogne-Billancourt is warm: daytime highs average 26 °C, and nights cool down to about 17 °C. The sun shines for around 6.9 hours a day. Rain is frequent, with about 9 rainy days and 57 mm in total. On about 5 days the thermometer climbs to 30 °C or more. All in all, August is an excellent month for a holiday in Boulogne-Billancourt.
Boulogne-Billancourt in August80September22° · 5.8 h
In September, Boulogne-Billancourt is warm: daytime highs average 22 °C, and nights cool down to about 14 °C. Expect around 5.8 hours of sunshine a day. Rain falls on about 8 days, adding up to 47 mm. All in all, September is an excellent month for a holiday in Boulogne-Billancourt.
Boulogne-Billancourt in September61October17° · 3.8 h
In October, Boulogne-Billancourt is mild: daytime highs average 17 °C, and nights cool down to about 10 °C. The sun is scarce, with only about 3.8 hours a day. Rain is frequent, with about 12 rainy days and 69 mm in total. All in all, October is a good month for a holiday in Boulogne-Billancourt.
Boulogne-Billancourt in October32November12° · 2.3 h
In November, Boulogne-Billancourt is cool: daytime highs average 12 °C, and nights cool down to about 7 °C. The sun is scarce, with only about 2.3 hours a day. Rain is frequent, with about 11 rainy days and 61 mm in total. All in all, November is not an ideal month for a holiday in Boulogne-Billancourt.
Boulogne-Billancourt in November14December9° · 1.8 h
In December, Boulogne-Billancourt is cold: daytime highs average 9 °C, and nights cool down to about 4 °C. The sun is scarce, with only about 1.8 hours a day. Rain is frequent, with about 12 rainy days and 70 mm in total. All in all, December is not an ideal month for a holiday in Boulogne-Billancourt.
Boulogne-Billancourt in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Boulogne-Billancourt
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
CoolOctober: nights around 10°. A duvet at night and a jumper for the evening.
The coolest nights are in January (4°), the warmest in July (17°). Nights are pleasant for sleeping (15 to 20 °C) from June to August. Nights fall below 8 °C on average from November to March, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 14 | 8° | 4° | 1.9 h | 12 | 55 |
| FebruaryFeb | 23 | 9° | 4° | 2.9 h | 10 | 48 |
| MarchMar | 45 | 13° | 6° | 4.3 h | 11 | 53 |
| AprilApr | 71 | 17° | 8° | 5.9 h | 11 | 50 |
| MayMay | 75 | 21° | 12° | 6.5 h | 12 | 65 |
| JuneJun | 78 | 24° | 15° | 6.8 h | 11 | 61 |
| JulyJul | 82 | 26° | 17° | 7.2 h | 9 | 57 |
| AugustAug | 82 | 26° | 17° | 6.9 h | 9 | 57 |
| SeptemberSep | 80 | 22° | 14° | 5.8 h | 8 | 47 |
| OctoberOct | 61 | 17° | 10° | 3.8 h | 12 | 69 |
| NovemberNov | 32 | 12° | 7° | 2.3 h | 11 | 61 |
| DecemberDec | 14 | 9° | 4° | 1.8 h | 12 | 70 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
48.84° N, 2.24° E · 35 m · Europe/Paris
Sunshine hours in Boulogne-Billancourt
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 3.8 of 10.9 hours of daylight in Boulogne-Billancourt, 35 % of the daylight hours.
Sunshine hours: measured at the weather station 7 km away, averages 1991–2020 (WMO climate normals). Daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Boulogne-Billancourt: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Boulogne-Billancourt has about 12 rainy days with 69 mm of rain in total.
UV index in Boulogne-Billancourt
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 2 · lowLittle protection needed; sunglasses on bright days.
The sun is strongest in June (UV 8).
Minutes until sunburn in October
- Very fair skin
- about 55 min
- Fair skin
- about 70 min
- Light brown skin
- about 100 min
- Olive skin
- over 2 h
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind and clouds in Boulogne-Billancourt
How breezy and how cloudy Boulogne-Billancourt is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Boulogne-Billancourt typically peaks at 18 km/h during the day: Beaufort 3, gentle breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 69 % of the sky over Boulogne-Billancourt: mostly cloudy, with about 3.8 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Boulogne-Billancourt
How often the day gets hot in Boulogne-Billancourt (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Boulogne-Billancourt has about 0 hot days, with an average daytime high of 17 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Planning a trip to Boulogne-Billancourt
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Boulogne-Billancourt in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Boulogne-Billancourt has its best school-holiday weather during the summer holidays (score 82) and its weakest during the Christmas holidays (score 14).
- 63
Easter holidays
Mar – Apr
Good
- 16 °C by day
- 5.4 h of sun a day
- 11 rainy days a month
- 76
May half-term
May – Jun
Good
- 21 °C by day
- 6.6 h of sun a day
- 12 rainy days a month
Good for: Sightseeing & walks
- 82
Summer holidays
Jul – Aug
ExcellentBest holidays
- 26 °C by day
- 7.0 h of sun a day
- 9 rainy days a month
Good for: Sightseeing & walks
- 61
October half-term
Oct
Good
- 17 °C by day
- 3.8 h of sun a day
- 12 rainy days a month
Good for: Sightseeing & walks
- 14
Christmas holidays
Dec – Jan
Poor
- 8 °C by day
- 1.9 h of sun a day
- 12 rainy days a month
Keep in mind: Frequent rain
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- Short trip – train or car is often quicker
- Distance
- 350 km
- Time zone
- UTC+2
- Jet lag
- Hardly any (under 3 h)
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Compare & alternatives
Boulogne-Billancourt compared
Put Boulogne-Billancourt side by side with another destination.
Boulogne-Billancourt vs Paris
In October the holiday weather in Boulogne-Billancourt and Paris is about equally good (score 61 vs 61). During the day it is about as warm in Paris as in Boulogne-Billancourt.
| in October | Boulogne-Billancourt | Paris |
|---|---|---|
| Holiday weather score | 61 | 61 |
| Daytime high | 17° | 17° |
| Sunshine | 4 h | 4 h |
| Rainy days | 12 | 11 |
| Best time | Apr – Sep | Apr – Sep |
Through the year
France in October: the best places
In October, Boulogne-Billancourt ranks 8 among the 31 nearest destinations in this country.
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Near Boulogne-Billancourt
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Destinations whose weather through the year is closest to Boulogne-Billancourt's – good alternatives.
Frequently asked questions about Boulogne-Billancourt
When is the best time to visit Boulogne-Billancourt?
The best time to visit Boulogne-Billancourt is from April to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Boulogne-Billancourt?
July is the warmest month, with average highs of 26 °C and nights around 17 °C. January is the coolest month at 8 °C.
When does it rain most in Boulogne-Billancourt?
The wettest month is December with 70 mm of precipitation. The driest month is September with 47 mm.
How many hours of sunshine does Boulogne-Billancourt get?
Boulogne-Billancourt gets around 1,710 hours of sunshine a year. The sunniest month is July with 7.2 hours a day; in December there are 1.8 hours a day.
What time zone is Boulogne-Billancourt in?
Boulogne-Billancourt is on UTC+1 in January and UTC+2 in July.
Which school holidays are best for Boulogne-Billancourt?
Boulogne-Billancourt has its best school-holiday weather during the summer holidays (score 82) and its weakest during the Christmas holidays (score 14). Holiday ratings (0–100): Easter holidays 63, May half-term 76, summer holidays 82, October half-term 61, Christmas holidays 14.