Saint-Martin-d'Hères weather in December

In December, Saint-Martin-d'Hères sees average daytime highs of 4°C and overnight lows near -3°C, with 133 mm of precipitation across 13.4 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 4°C through the month. The sky is clear or mostly clear about 25% 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 Saint-Martin-d'Hères's 10th-clearest and 8th-windiest month. For the whole year in context, see Saint-Martin-d'Hères's year-round climate.

Daytime high
11th warmest
Overnight low
-3°
3rd coldest
Precipitation
133 mm
13.4 wet days
Daylight
8 h 36 min
8:16 AM – 4:50 PM
Cloud cover
64%
10th clearest
Wind
5 km/h
8th windiest
Solar energy
1.29 kWh/m²
Travel score
0.0
out of 10
Air quality
Good
PM10 18.1 µg/m³ · 2019

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 4°C through the month.

A typical December day in Saint-Martin-d'Hères reaches about 4°C in the afternoon and slips back to -3°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 9°C. Set against its neighbours, December runs about 4°C cooler than November and on par with January.

-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
15-2
25-2
35-2
45-3
54-3
64-3
74-3
84-3
94-3
104-3
114-3
124-3
134-3
144-3
154-3
164-3
174-3
184-3
194-3
204-3
213-3
223-3
233-3
243-4
253-4
263-4
273-4
283-4
293-4
303-4
313-4

How December really feels in Saint-Martin-d'Hères

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.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
31
wind chill below the day's low

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Saint-Martin-d'Hères 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°11913.110.890.0
Feb / -4°10211.19.210.10.1
Mar / -0°10912.98.311.61.7
Apr12° / 12014.36.613.22.8
May16° / 14716.82.214.64.3
Jun20° / 10°12715.30.115.45.6
Jul23° / 12°11312.80.115.16.6
Aug22° / 12°10712013.96.7
Sep18° / 11111.70.412.35.6
Oct14° / 11812.72.510.73.7
Nov / -0°14113.57.59.31.0
Dec / -3°13313.410.58.60.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% 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 61%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23961
33961
43961
53961
63961
73961
83961
94060
104060
114060
124060
134159
144159
154159
164060
174060
184060
194060
204060
214060
224060
234060
244060
253961
263961
273961
283961
293862
303862
313862

Chance of precipitation in December

Any precipitationSnow

Saint-Martin-d'Hères gets around 133 mm of rain and snow over 13.4 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 44% and peaks near 44% on the wettest days, and about 11 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
14433
24434
34434
44434
54434
64434
74434
84434
94434
104434
114434
124434
134434
144434
154433
164333
174333
184333
194333
204334
214334
224334
234335
244335
254335
264335
274336
284336
294336
304336
314436

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in December

Winds average 5 km/h in December.

Across December, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in December

DaylightNight

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 8:02 AM to 8:22 AM, and sunset from 4:51 PM to 4:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.88:024:51
28.88:034:51
38.88:044:51
48.78:054:50
58.78:074:50
68.78:084:50
78.78:084:50
88.78:094:50
98.78:104:50
108.68:114:50
118.68:124:50
128.68:134:50
138.68:144:50
148.68:144:50
158.68:154:50
168.68:164:50
178.68:174:51
188.68:174:51
198.68:184:51
208.68:184:52
218.68:194:52
228.68:194:52
238.68:204:53
248.68:204:53
258.68:214:54
268.68:214:55
278.68:214:55
288.68:224:56
298.68:224:57
308.68:224:57
318.68:224:58

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.29 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.29 kWh/m² to a high of 6.25 kWh/m² in July across the year — December's 1.29 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.4Dim
21.4Dim
31.4Dim
41.4Dim
51.4Dim
61.3Dim
71.3Dim
81.3Dim
91.3Dim
101.3Dim
111.3Dim
121.3Dim
131.3Dim
141.3Dim
151.3Dim
161.3Dim
171.3Dim
181.3Dim
191.3Dim
201.3Dim
211.3Dim
221.3Dim
231.3Dim
241.3Dim
251.3Dim
261.3Dim
271.3Dim
281.3Dim
291.3Dim
301.3Dim
311.3Dim
Planning a trip in December

Is December a good time to visit Saint-Martin-d'Hères?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.0
Sightseeing
11th-best month of the year
0.0
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Saint-Martin-d'Hères.

What to pack for Saint-Martin-d'Hères in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Saint-Martin-d'Hères sees daytime highs around 4°C and nights near -3°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 13 days see rain.

a warm layera heavy coatrain gear

UV index in Saint-Martin-d'Hères in December

LowModerateHighVery highExtreme

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 Saint-Martin-d'Hères 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 16UV 9Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar4Moderate
Apr5High
May7High
Jun7Very high
Jul9Very high
Aug7High
Sep5High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Saint-Martin-d'Hères?

Saint-Martin-d'Hères sits at 45.2°N, 5.8°E, 215 m above sea level, in France. The nearest listed city is Meylan, 4.0 km away.

Topography around Saint-Martin-d'Hères

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Saint-Martin-d'Hères.

Within 3 km, the terrain around Saint-Martin-d'Hères has significant variations in elevation — a maximum elevation change of 593 m around an average of 267 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,573 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,885 m.

The land around Saint-Martin-d'Hères is covered by artificial surfaces (45%) and trees (41%) within 3 km, trees (67%) within 16 km, and trees (53%) and grassland (27%) within 80 km.

3 km
593 m
16 km
2,573 m
80 km
3,885 m
treesgrasslandcroplandartificial surfacesbare terrainsnow and icewater
December weather nearby: Meylan 4.0 km · Grenoble 4.0 km · Échirolles 5.0 km · Fontaine 6.0 km · Saint-Égrève 9.0 km · Voiron 25 km · Chambéry 45 km · Romans-sur-Isère 57 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
Roman Catholic 47%none 33%Muslim 4%Protestant 2%

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 Saint-Martin-d'Hères (45.1787°, 5.7628°, elevation 215 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).