Voiron weather in December
In December, Voiron sees average daytime highs of 6°C and overnight lows near -1°C, with 116 mm of precipitation across 13.1 wet days and about 8.6 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.
Day-to-day highs hold fairly steady near 6°C through the month. The sky is clear or mostly clear about 21% of the time in December, and the air most often feels dry.
Daylight stretches from about 8 h 48 min at the start of December to 8 h 36 min by month's end. Set against the rest of the year, December is Voiron's 11th-clearest and 8th-windiest month. For the whole year in context, see Voiron's year-round climate.
- Daytime high
- 6°
- 11th warmest
- Overnight low
- -1°
- 3rd coldest
- Precipitation
- 116 mm
- 13.1 wet days
- Daylight
- 8 h 30 min
- 8:17 AM – 4:50 PM
- Cloud cover
- 67%
- 11th clearest
- Wind
- 6 km/h
- 8th windiest
- Solar energy
- 1.21 kWh/m²
- Travel score
- 0.5
- out of 10
- Air quality
- Excellent
- PM10 15 µg/m³ · 2019
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Day-to-day highs hold fairly steady near 6°C through the month.
A typical December day in Voiron reaches about 6°C in the afternoon and slips back to -1°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 1°C and 11°C. Set against its neighbours, December runs about 4°C cooler than November and on par with January.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Avg low (°C) | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 7 | 1 |
| 2 | 7 | 0 |
| 3 | 7 | 0 |
| 4 | 7 | 0 |
| 5 | 7 | 0 |
| 6 | 7 | 0 |
| 7 | 7 | 0 |
| 8 | 7 | 0 |
| 9 | 6 | 0 |
| 10 | 6 | 0 |
| 11 | 6 | 0 |
| 12 | 6 | 0 |
| 13 | 6 | 0 |
| 14 | 6 | 0 |
| 15 | 6 | 0 |
| 16 | 6 | -1 |
| 17 | 6 | -1 |
| 18 | 6 | -1 |
| 19 | 6 | -1 |
| 20 | 6 | -1 |
| 21 | 6 | -1 |
| 22 | 6 | -1 |
| 23 | 6 | -1 |
| 24 | 6 | -1 |
| 25 | 6 | -1 |
| 26 | 6 | -1 |
| 27 | 6 | -1 |
| 28 | 6 | -1 |
| 29 | 6 | -1 |
| 30 | 6 | -1 |
| 31 | 6 | -1 |
How December really feels in Voiron
Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 31 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in December is cold — wind chill drags the overnight "feels like" below the raw low.
Voiron weather by month
How December compares with the rest of the year at a glance. December is the 11th-warmest and 3rd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 6° / -2° | 105 | 12.8 | 6.4 | 8.9 | 0.3 |
| Feb | 7° / -1° | 92 | 11.3 | 5.7 | 10.1 | 0.9 |
| Mar | 12° / 2° | 96 | 12.4 | 3.7 | 11.6 | 2.9 |
| Apr | 15° / 5° | 112 | 13.6 | 2.1 | 13.2 | 4.1 |
| May | 19° / 9° | 133 | 15.3 | 0.3 | 14.6 | 5.3 |
| Jun | 23° / 13° | 108 | 13.2 | 0 | 15.4 | 6.3 |
| Jul | 25° / 15° | 97 | 10.9 | 0 | 15.1 | 7.0 |
| Aug | 25° / 14° | 94 | 10.7 | 0 | 13.9 | 7.0 |
| Sep | 20° / 11° | 103 | 10.6 | 0 | 12.3 | 6.3 |
| Oct | 16° / 7° | 111 | 11.5 | 0.3 | 10.7 | 4.7 |
| Nov | 10° / 3° | 132 | 13.1 | 3.3 | 9.3 | 2.0 |
| Dec | 6° / -1° | 116 | 13.1 | 6 | 8.6 | 0.5 |
Cloud cover in December
The sky is clear or mostly clear about 21% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 65%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 35 | 35 | 35 | 35 | 35 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 37 | 36 | 36 | 36 | 36 | 36 | 36 | 35 | 35 | 35 | 35 | 35 | 33 | 33 | 34 | 33 | 33 | 34 | 35 |
| Cloudier (%) | 65 | 65 | 65 | 65 | 65 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 63 | 64 | 64 | 64 | 64 | 64 | 64 | 65 | 65 | 65 | 65 | 65 | 67 | 67 | 66 | 67 | 67 | 66 | 65 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 35 | 65 |
| 2 | 35 | 65 |
| 3 | 35 | 65 |
| 4 | 35 | 65 |
| 5 | 35 | 65 |
| 6 | 36 | 64 |
| 7 | 36 | 64 |
| 8 | 36 | 64 |
| 9 | 36 | 64 |
| 10 | 36 | 64 |
| 11 | 36 | 64 |
| 12 | 36 | 64 |
| 13 | 37 | 63 |
| 14 | 36 | 64 |
| 15 | 36 | 64 |
| 16 | 36 | 64 |
| 17 | 36 | 64 |
| 18 | 36 | 64 |
| 19 | 36 | 64 |
| 20 | 35 | 65 |
| 21 | 35 | 65 |
| 22 | 35 | 65 |
| 23 | 35 | 65 |
| 24 | 35 | 65 |
| 25 | 33 | 67 |
| 26 | 33 | 67 |
| 27 | 34 | 66 |
| 28 | 33 | 67 |
| 29 | 33 | 67 |
| 30 | 34 | 66 |
| 31 | 35 | 65 |
Chance of precipitation in December
Voiron gets around 116 mm of rain and snow over 13.1 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 42% and peaks near 43% on the wettest days, and about 6 days bring snow.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 42 | 42 | 42 | 42 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 |
| Snow chance (%) | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 43 | 19 |
| 2 | 43 | 20 |
| 3 | 43 | 20 |
| 4 | 43 | 20 |
| 5 | 43 | 20 |
| 6 | 43 | 20 |
| 7 | 43 | 20 |
| 8 | 43 | 20 |
| 9 | 43 | 20 |
| 10 | 43 | 20 |
| 11 | 43 | 20 |
| 12 | 43 | 20 |
| 13 | 42 | 20 |
| 14 | 42 | 19 |
| 15 | 42 | 19 |
| 16 | 42 | 19 |
| 17 | 41 | 19 |
| 18 | 41 | 19 |
| 19 | 41 | 19 |
| 20 | 41 | 19 |
| 21 | 41 | 19 |
| 22 | 41 | 20 |
| 23 | 41 | 20 |
| 24 | 42 | 20 |
| 25 | 42 | 20 |
| 26 | 42 | 19 |
| 27 | 42 | 19 |
| 28 | 42 | 19 |
| 29 | 42 | 19 |
| 30 | 42 | 19 |
| 31 | 42 | 19 |
Humidity in December
Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
| 29 | 100 |
| 30 | 100 |
| 31 | 100 |
Wind in December
Winds average 6 km/h in December.
Across December, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 6 | calm |
| 2 | 6 | calm |
| 3 | 6 | calm |
| 4 | 6 | calm |
| 5 | 6 | calm |
| 6 | 6 | calm |
| 7 | 6 | calm |
| 8 | 6 | calm |
| 9 | 6 | calm |
| 10 | 6 | calm |
| 11 | 6 | calm |
| 12 | 6 | calm |
| 13 | 6 | calm |
| 14 | 6 | calm |
| 15 | 6 | calm |
| 16 | 6 | calm |
| 17 | 6 | calm |
| 18 | 6 | calm |
| 19 | 6 | calm |
| 20 | 6 | calm |
| 21 | 6 | calm |
| 22 | 6 | calm |
| 23 | 6 | calm |
| 24 | 6 | calm |
| 25 | 6 | calm |
| 26 | 6 | calm |
| 27 | 6 | calm |
| 28 | 6 | calm |
| 29 | 6 | calm |
| 30 | 6 | calm |
| 31 | 6 | calm |
Sunrise & sunset in December
Daylight runs from about 8 h 48 min at the start of December to 8 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 12 minutes over December. Sunrise moves from 8:04 AM to 8:24 AM, and sunset from 4:51 PM to 4:58 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 8.8 | 8.8 | 8.7 | 8.7 | 8.7 | 8.7 | 8.7 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.6 | 8.6 | 8.6 |
| Sunrise (AM) | 8:04 | 8:05 | 8:06 | 8:07 | 8:08 | 8:09 | 8:10 | 8:11 | 8:12 | 8:13 | 8:14 | 8:14 | 8:15 | 8:16 | 8:17 | 8:17 | 8:18 | 8:19 | 8:19 | 8:20 | 8:20 | 8:21 | 8:21 | 8:22 | 8:22 | 8:22 | 8:23 | 8:23 | 8:23 | 8:23 | 8:24 |
| Sunset (PM) | 4:51 | 4:51 | 4:51 | 4:50 | 4:50 | 4:50 | 4:50 | 4:50 | 4:50 | 4:50 | 4:50 | 4:50 | 4:50 | 4:50 | 4:50 | 4:50 | 4:51 | 4:51 | 4:51 | 4:52 | 4:52 | 4:52 | 4:53 | 4:53 | 4:54 | 4:55 | 4:55 | 4:56 | 4:57 | 4:57 | 4:58 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 8.8 | 8:04 | 4:51 |
| 2 | 8.8 | 8:05 | 4:51 |
| 3 | 8.7 | 8:06 | 4:51 |
| 4 | 8.7 | 8:07 | 4:50 |
| 5 | 8.7 | 8:08 | 4:50 |
| 6 | 8.7 | 8:09 | 4:50 |
| 7 | 8.7 | 8:10 | 4:50 |
| 8 | 8.6 | 8:11 | 4:50 |
| 9 | 8.6 | 8:12 | 4:50 |
| 10 | 8.6 | 8:13 | 4:50 |
| 11 | 8.6 | 8:14 | 4:50 |
| 12 | 8.6 | 8:14 | 4:50 |
| 13 | 8.6 | 8:15 | 4:50 |
| 14 | 8.6 | 8:16 | 4:50 |
| 15 | 8.6 | 8:17 | 4:50 |
| 16 | 8.5 | 8:17 | 4:50 |
| 17 | 8.5 | 8:18 | 4:51 |
| 18 | 8.5 | 8:19 | 4:51 |
| 19 | 8.5 | 8:19 | 4:51 |
| 20 | 8.5 | 8:20 | 4:52 |
| 21 | 8.5 | 8:20 | 4:52 |
| 22 | 8.5 | 8:21 | 4:52 |
| 23 | 8.5 | 8:21 | 4:53 |
| 24 | 8.5 | 8:22 | 4:53 |
| 25 | 8.5 | 8:22 | 4:54 |
| 26 | 8.5 | 8:22 | 4:55 |
| 27 | 8.5 | 8:23 | 4:55 |
| 28 | 8.5 | 8:23 | 4:56 |
| 29 | 8.6 | 8:23 | 4:57 |
| 30 | 8.6 | 8:23 | 4:57 |
| 31 | 8.6 | 8:24 | 4:58 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 1.21 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 1.21 kWh/m² to a high of 6.23 kWh/m² in July across the year — December's 1.21 kWh/m² sits near the bottom.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 |
| Level | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 1.3 | Dim |
| 2 | 1.3 | Dim |
| 3 | 1.3 | Dim |
| 4 | 1.3 | Dim |
| 5 | 1.3 | Dim |
| 6 | 1.3 | Dim |
| 7 | 1.3 | Dim |
| 8 | 1.3 | Dim |
| 9 | 1.2 | Dim |
| 10 | 1.2 | Dim |
| 11 | 1.2 | Dim |
| 12 | 1.2 | Dim |
| 13 | 1.2 | Dim |
| 14 | 1.2 | Dim |
| 15 | 1.2 | Dim |
| 16 | 1.2 | Dim |
| 17 | 1.2 | Dim |
| 18 | 1.2 | Dim |
| 19 | 1.2 | Dim |
| 20 | 1.2 | Dim |
| 21 | 1.2 | Dim |
| 22 | 1.2 | Dim |
| 23 | 1.2 | Dim |
| 24 | 1.2 | Dim |
| 25 | 1.2 | Dim |
| 26 | 1.2 | Dim |
| 27 | 1.2 | Dim |
| 28 | 1.2 | Dim |
| 29 | 1.2 | Dim |
| 30 | 1.2 | Dim |
| 31 | 1.2 | Dim |
Is December a good time to visit Voiron?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a weaker month for outdoor sightseeing in Voiron.
What to pack for Voiron in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Voiron sees daytime highs around 6°C and nights near -1°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 13 days see rain.
UV index in Voiron in December
Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Voiron peaks around July 16 at about 9 (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 | 3 | 4 | 5 | 7 | 7 | 9 | 7 | 5 | 4 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | High | Very high | Very high | High | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 3 | Moderate |
| Mar | 4 | Moderate |
| Apr | 5 | High |
| May | 7 | High |
| Jun | 7 | Very high |
| Jul | 9 | Very high |
| Aug | 7 | High |
| Sep | 5 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Voiron in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in Voiron 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 Voiron?
Voiron sits at 45.4°N, 5.6°E, 301 m above sea level, in France. The nearest listed city is Saint-Égrève, 16 km away.
Topography around Voiron
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Voiron.
Within 3 km, the terrain around Voiron has significant variations in elevation — a maximum elevation change of 580 m around an average of 383 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,724 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,838 m.
The land around Voiron is covered by trees (47%), grassland (26%) and artificial surfaces (20%) within 3 km, trees (56%) and grassland (25%) within 16 km, and trees (52%) and grassland (26%) 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 Voiron (45.3647°, 5.5856°, elevation 301 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).