Romans-sur-Isère in Fall
In fall (September, October and November), Romans-sur-Isère sees average daytime highs around 17°C and overnight lows near 9°C, with 289 mm of precipitation over about 30 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Over the season highs ease from about 25°C in early September to 9°C by late November. The sky is clear or mostly clear about 27% of the time across fall, and the air most often feels dry.
Fall is Romans-sur-Isère's 2nd-best season to visit on our travel score. For the whole year in context, see Romans-sur-Isère's year-round climate.
- Avg daytime high
- 17°C
- 2nd-warmest season
- Avg overnight low
- 9°C
- Precipitation
- 289 mm
- 30 wet days
- Avg wind
- 10 km/h
- Travel score
- 5.1
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Romans-sur-Isère in Fall
Over the season highs ease from about 25°C in early September to 9°C by late November.
A typical fall day in Romans-sur-Isère reaches about 17°C and drops to 9°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Romans-sur-Isère
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
fall sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Romans-sur-Isère 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° / 1° | 68 | 10.7 | 2.6 | 9 | 1.0 |
| Feb | 9° / 1° | 55 | 9.1 | 2.5 | 10.1 | 1.8 |
| Mar | 13° / 4° | 57 | 9.6 | 1.1 | 11.6 | 3.8 |
| Apr | 17° / 7° | 80 | 10.8 | 0.4 | 13.2 | 5.1 |
| May | 20° / 11° | 83 | 10.8 | 0.1 | 14.6 | 6.3 |
| Jun | 25° / 14° | 60 | 8.6 | 0 | 15.4 | 7.1 |
| Jul | 28° / 16° | 54 | 6.6 | 0 | 15.1 | 7.1 |
| Aug | 27° / 16° | 53 | 6.7 | 0 | 13.9 | 7.1 |
| Sep | 23° / 13° | 84 | 7.7 | 0 | 12.3 | 7.1 |
| Oct | 17° / 9° | 97 | 10.5 | 0.1 | 10.7 | 5.4 |
| Nov | 11° / 5° | 108 | 11.3 | 1.3 | 9.3 | 2.7 |
| Dec | 8° / 2° | 67 | 11.1 | 2.2 | 8.6 | 1.3 |
Cloud cover in Fall
The sky is clear or mostly clear about 27% of the time across fall.
Chance of precipitation in Fall
Romans-sur-Isère gets around 289 mm of rain and snow over 30 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 10 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 h 06 min in early September to 8 h 54 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 2.8 kWh/m².
Is fall a good time to visit Romans-sur-Isère?
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 Romans-sur-Isère for sightseeing.
What to pack for Romans-sur-Isère in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Romans-sur-Isère sees daytime highs around 17°C and nights near 9°C. Pack a warm layer. Worth having: light clothes and rain gear. About 30 days see rain.
UV index in Romans-sur-Isère in Fall
Clear-sky midday UV across fall averages around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Romans-sur-Isère peaks around July 15 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 5 | 6 | 7 | 9 | 7 | 5 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | Moderate | High | Very high | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 6 | High |
| Jun | 7 | Very high |
| Jul | 9 | Very high |
| Aug | 7 | High |
| Sep | 5 | Moderate |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Romans-sur-Isère 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 Romans-sur-Isère is worst in March — around 17 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) | 16 | 15 | 17 | 17 | 14 | 16 | 12 | 12 | 12 | 13 | 13 | 15 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 16 | Moderate |
| Feb | 15 | Moderate |
| Mar | 17 | Moderate |
| Apr | 17 | Moderate |
| May | 14 | Moderate |
| Jun | 16 | Moderate |
| Jul | 12 | Good |
| Aug | 12 | Good |
| Sep | 12 | Moderate |
| Oct | 13 | Moderate |
| Nov | 13 | Moderate |
| Dec | 15 | Moderate |
Where is Romans-sur-Isère?
Romans-sur-Isère sits at 45.0°N, 5.1°E, 170 m above sea level, in France. The nearest listed city is Bourg-lès-Valence, 18 km away.
Topography around Romans-sur-Isère
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Romans-sur-Isère.
Within 3 km, the terrain around Romans-sur-Isère has only modest variations in elevation — a maximum elevation change of 152 m around an average of 171 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,190 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,001 m.
The land around Romans-sur-Isère is covered by artificial surfaces (44%) and cropland (25%) within 3 km, trees (37%), cropland (35%) and grassland (21%) within 16 km, and trees (59%) and grassland (23%) 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 Romans-sur-Isère (45.0496°, 5.066°, elevation 170 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.