Montigny-le-Bretonneux in Fall
In fall (September, October and November), Montigny-le-Bretonneux sees average daytime highs around 15°C and overnight lows near 8°C, with 170 mm of precipitation over about 31 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 22°C in early September to 8°C by late November. The sky is clear or mostly clear about 17% of the time across fall, and the air most often feels dry.
Fall is Montigny-le-Bretonneux's 2nd-best season to visit on our travel score. For the whole year in context, see Montigny-le-Bretonneux's year-round climate.
- Avg daytime high
- 15°C
- 2nd-warmest season
- Avg overnight low
- 8°C
- Precipitation
- 170 mm
- 31 wet days
- Avg wind
- 13 km/h
- Travel score
- 4.4
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Montigny-le-Bretonneux in Fall
Over the season highs ease from about 22°C in early September to 8°C by late November.
A typical fall day in Montigny-le-Bretonneux reaches about 15°C and drops to 8°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Montigny-le-Bretonneux
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 2 that feel at or below 0°C.
The story in fall is cold — wind chill drags the overnight "feels like" below the raw low.
Montigny-le-Bretonneux weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 7° / 2° | 53 | 11.3 | 1 | 8.5 | 0.7 |
| Feb | 8° / 2° | 47 | 10 | 1.3 | 9.8 | 1.2 |
| Mar | 12° / 4° | 51 | 10.6 | 0.6 | 11.6 | 2.9 |
| Apr | 15° / 6° | 52 | 11 | 0 | 13.4 | 4.3 |
| May | 18° / 9° | 67 | 11.6 | 0 | 15 | 5.5 |
| Jun | 22° / 12° | 60 | 10.4 | 0 | 15.9 | 6.4 |
| Jul | 24° / 14° | 55 | 9.1 | 0 | 15.5 | 7.0 |
| Aug | 24° / 14° | 58 | 8.9 | 0 | 14.2 | 7.0 |
| Sep | 20° / 11° | 48 | 8.5 | 0 | 12.4 | 6.4 |
| Oct | 16° / 8° | 63 | 11.2 | 0 | 10.5 | 4.6 |
| Nov | 10° / 5° | 59 | 11.1 | 0.3 | 9 | 2.2 |
| Dec | 7° / 3° | 68 | 12.4 | 1.1 | 8.1 | 0.9 |
Cloud cover in Fall
The sky is clear or mostly clear about 17% of the time across fall.
Chance of precipitation in Fall
Montigny-le-Bretonneux gets around 170 mm of rain and snow over 31 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 13 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 h 18 min in early September to 8 h 24 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 2.2 kWh/m².
Is fall a good time to visit Montigny-le-Bretonneux?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Montigny-le-Bretonneux for sightseeing.
What to pack for Montigny-le-Bretonneux in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Montigny-le-Bretonneux sees daytime highs around 15°C and nights near 8°C. Pack a warm layer. Worth having: rain gear. About 31 days see rain.
UV index in Montigny-le-Bretonneux in Fall
Clear-sky midday UV across fall averages around 3. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Montigny-le-Bretonneux peaks around June 22 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 7 | 4 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | High | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 3 | Moderate |
| Apr | 5 | Moderate |
| May | 6 | High |
| Jun | 7 | High |
| Jul | 7 | High |
| Aug | 7 | High |
| Sep | 4 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Air quality in Montigny-le-Bretonneux in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Montigny-le-Bretonneux is worst in April — around 20 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 17 | 17 | 20 | 20 | 17 | 16 | 13 | 14 | 15 | 15 | 15 | 15 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 17 | Moderate |
| Feb | 17 | Moderate |
| Mar | 20 | Moderate |
| Apr | 20 | Moderate |
| May | 17 | Moderate |
| Jun | 16 | Moderate |
| Jul | 13 | Moderate |
| Aug | 14 | Moderate |
| Sep | 15 | Moderate |
| Oct | 15 | Moderate |
| Nov | 15 | Moderate |
| Dec | 15 | Moderate |
Where is Montigny-le-Bretonneux?
Montigny-le-Bretonneux sits at 48.8°N, 2.0°E, 162 m above sea level, in France. The nearest listed city is Saint-Quentin-en-Yvelines, 1.0 km away.
Topography around Montigny-le-Bretonneux
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Montigny-le-Bretonneux.
Within 3 km, the terrain around Montigny-le-Bretonneux has only modest variations in elevation — a maximum elevation change of 84 m around an average of 165 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 208 m; within 80 km, significant variations in elevation — a maximum elevation change of 296 m.
The land around Montigny-le-Bretonneux is covered by trees (45%) and artificial surfaces (32%) within 3 km, trees (48%) and cropland (26%) within 16 km, and cropland (56%) and trees (30%) within 80 km.
France travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E
- 230 V · 50 Hz
- Prices
- ≈ 77% of US
- price level, 2025
- GDP per capita
- $48,986
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1.3
- per 100k, 2023
- Road deaths
- 5.1
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 539
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Montigny-le-Bretonneux (48.7664°, 2.0341°, elevation 162 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.