Ushuaia weather in December

In December, Ushuaia sees average daytime highs of 10°C and overnight lows near 3°C, with 99 mm of precipitation across 21.8 wet days and about 16.9 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 10°C through the month. The sky is clear or mostly clear about 2% of the time in December, and the air most often feels dry.

Daylight stretches from about 16 h 36 min at the start of December to 17 hours by month's end. Set against the rest of the year, December is Ushuaia's 10th-clearest and 1st-windiest month. For the whole year in context, see Ushuaia's year-round climate.

Daytime high: 10°; 3rd warmest
Overnight low: 3°; 10th coldest
Precipitation: 99 mm; 21.8 wet days
Daylight: 17 hours; 4:59 AM – 10:00 PM
Cloud cover: 79%; 10th clearest
Wind: 10 km/h; 1st windiest
Solar energy: 5.87 kWh/m²
Travel score: 1.6; out of 10

Ushuaia is capital of Tierra del Fuego in Argentina.

Density: 2,471/km²; people per km²
Founded: 1884

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

← November Ushuaia year-round climate January →Best places to visit in December

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 10°C through the month.

A typical December day in Ushuaia reaches about 10°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 6°C and 14°C. Set against its neighbours, December runs about 2°C warmer than November and about 1°C cooler than 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)	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	11	11	11	11	11
Avg low (°C)	2	2	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	4	4

	Avg high (°C)	Avg low (°C)
1	10	2
2	10	2
3	10	3
4	10	3
5	10	3
6	10	3
7	10	3
8	10	3
9	10	3
10	10	3
11	10	3
12	10	3
13	10	3
14	10	3
15	10	3
16	10	3
17	10	3
18	10	3
19	10	3
20	10	3
21	10	3
22	10	3
23	10	3
24	10	3
25	10	3
26	10	3
27	11	3
28	11	3
29	11	3
30	11	4
31	11	4

How December really feels in Ushuaia

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 10 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

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

Ushuaia weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	11° / 4°	100	22.4	1	16.4	1.9
Feb	11° / 4°	76	17.6	1.3	14.7	2.0
Mar	9° / 3°	79	16.8	3	12.6	1.5
Apr	6° / 1°	66	15.2	6.9	10.3	0.5
May	3° / -2°	57	12.5	8.7	8.2	0.0
Jun	0° / -4°	50	12.1	12	7.1	0.0
Jul	0° / -5°	49	12.2	12.4	7.5	0.0
Aug	2° / -4°	50	12	12.3	9.3	0.0
Sep	4° / -3°	48	12.5	10.7	11.5	0.0
Oct	6° / -1°	56	14.7	8.3	13.8	0.5
Nov	9° / 1°	76	18.7	5.6	15.9	1.3
Dec	10° / 3°	99	21.8	2.9	16.9	1.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 84%.

	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 (%)	19	18	18	17	16	16	16	16	16	16	16	16	15	15	15	15	15	15	15	15	15	15	15	15	14	14	14	14	14	14	14
Cloudier (%)	81	82	82	83	84	84	84	84	84	84	84	84	85	85	85	85	85	85	85	85	85	85	85	85	86	86	86	86	86	86	86

	Clearer (%)	Cloudier (%)
1	19	81
2	18	82
3	18	82
4	17	83
5	16	84
6	16	84
7	16	84
8	16	84
9	16	84
10	16	84
11	16	84
12	16	84
13	15	85
14	15	85
15	15	85
16	15	85
17	15	85
18	15	85
19	15	85
20	15	85
21	15	85
22	15	85
23	15	85
24	15	85
25	14	86
26	14	86
27	14	86
28	14	86
29	14	86
30	14	86
31	14	86

Chance of precipitation in December

Any precipitationSnow

Ushuaia gets around 99 mm of rain and snow over 21.8 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 71% and peaks near 73% on the wettest days, and about 3 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 (%)	68	68	68	68	68	69	69	69	69	70	70	70	71	71	72	72	72	73	73	73	72	72	72	72	71	71	71	71	71	71	71
Snow chance (%)	14	13	13	12	12	11	11	10	10	10	10	9	9	9	9	9	9	9	9	9	9	8	8	8	8	7	7	6	6	6	5

	Rain chance (%)	Snow chance (%)
1	68	14
2	68	13
3	68	13
4	68	12
5	68	12
6	69	11
7	69	11
8	69	10
9	69	10
10	70	10
11	70	10
12	70	9
13	71	9
14	71	9
15	72	9
16	72	9
17	72	9
18	73	9
19	73	9
20	73	9
21	72	9
22	72	8
23	72	8
24	72	8
25	71	8
26	71	7
27	71	7
28	71	6
29	71	6
30	71	6
31	71	5

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.

	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 10 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 10 km/h on the calmest days to 11 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)	11	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10
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	11	calm
2	10	calm
3	10	calm
4	10	calm
5	10	calm
6	10	calm
7	10	calm
8	10	calm
9	10	calm
10	10	calm
11	10	calm
12	10	calm
13	10	calm
14	10	calm
15	10	calm
16	10	calm
17	10	calm
18	10	calm
19	10	calm
20	10	calm
21	10	calm
22	10	calm
23	10	calm
24	10	calm
25	10	calm
26	10	calm
27	10	calm
28	10	calm
29	10	calm
30	10	calm
31	10	calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 16 h 36 min at the start of December to 17 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over December. Sunrise moves from 5:04 AM to 5:07 AM, and sunset from 9:42 PM to 10:06 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)	16.6	16.7	16.7	16.7	16.8	16.8	16.8	16.9	16.9	16.9	16.9	17.0	17.0	17.0	17.0	17.0	17.0	17.0	17.1	17.1	17.1	17.1	17.1	17.1	17.1	17.0	17.0	17.0	17.0	17.0	17.0
Sunrise (AM)	5:04	5:03	5:02	5:02	5:01	5:01	5:00	5:00	4:59	4:59	4:59	4:59	4:59	4:59	4:59	4:59	4:59	4:59	4:59	5:00	5:00	5:00	5:01	5:02	5:02	5:03	5:04	5:04	5:05	5:06	5:07
Sunset (PM)	9:42	9:44	9:45	9:47	9:48	9:49	9:51	9:52	9:53	9:54	9:55	9:56	9:57	9:58	9:59	10:00	10:01	10:02	10:02	10:03	10:04	10:04	10:04	10:05	10:05	10:05	10:06	10:06	10:06	10:06	10:06

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	16.6	5:04	9:42
2	16.7	5:03	9:44
3	16.7	5:02	9:45
4	16.7	5:02	9:47
5	16.8	5:01	9:48
6	16.8	5:01	9:49
7	16.8	5:00	9:51
8	16.9	5:00	9:52
9	16.9	4:59	9:53
10	16.9	4:59	9:54
11	16.9	4:59	9:55
12	17.0	4:59	9:56
13	17.0	4:59	9:57
14	17.0	4:59	9:58
15	17.0	4:59	9:59
16	17.0	4:59	10:00
17	17.0	4:59	10:01
18	17.0	4:59	10:02
19	17.1	4:59	10:02
20	17.1	5:00	10:03
21	17.1	5:00	10:04
22	17.1	5:00	10:04
23	17.1	5:01	10:04
24	17.1	5:02	10:05
25	17.1	5:02	10:05
26	17.0	5:03	10:05
27	17.0	5:04	10:06
28	17.0	5:04	10:06
29	17.0	5:05	10:06
30	17.0	5:06	10:06
31	17.0	5:07	10:06

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.87 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 0.52 kWh/m² to a high of 5.87 kWh/m² in December across the year — December's 5.87 kWh/m² sits near the top of that range.

	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)	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.8	5.8	5.8	5.8
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	5.8	Bright
2	5.8	Bright
3	5.8	Bright
4	5.8	Bright
5	5.8	Bright
6	5.8	Bright
7	5.8	Bright
8	5.8	Bright
9	5.8	Bright
10	5.8	Bright
11	5.8	Bright
12	5.8	Bright
13	5.9	Bright
14	5.9	Bright
15	5.9	Bright
16	5.9	Bright
17	5.9	Bright
18	5.9	Bright
19	5.9	Bright
20	5.9	Bright
21	5.9	Bright
22	5.9	Bright
23	5.9	Bright
24	5.9	Bright
25	5.9	Bright
26	5.9	Bright
27	5.9	Bright
28	5.8	Bright
29	5.8	Bright
30	5.8	Bright
31	5.8	Bright

Planning a trip in December

Is December a good time to visit Ushuaia?

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

1.6

Sightseeing

3rd-best month of the year

—

Beach & pool

never really warm enough

December is a weaker month for outdoor sightseeing in Ushuaia.

What to pack for Ushuaia in December

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

In December, Ushuaia sees daytime highs around 10°C and nights near 3°C. Pack a warm layer and rain gear. Worth having: sun protection. About 22 days see rain.

a warm layerrain gearsun protection

Sea temperature near Ushuaia in December

The nearest coast averages about 8°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 64 km away) is warmest in February at about 9°C and coldest in August near 6°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	9	9	9	8	8	7	6	6	6	6	7	8
Comfort	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing

	Sea temperature (°C)	Comfort
Jan	9	Bracing
Feb	9	Bracing
Mar	9	Bracing
Apr	8	Bracing
May	8	Bracing
Jun	7	Bracing
Jul	6	Bracing
Aug	6	Bracing
Sep	6	Bracing
Oct	6	Bracing
Nov	7	Bracing
Dec	8	Bracing

UV index in Ushuaia in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ushuaia peaks around January 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	9	7	3	2	1	0	1	1	2	4	6	8
Level	Very high	High	Moderate	Low	Low	Low	Low	Low	Moderate	Moderate	High	Very high

	UV index (midday)	Level
Jan	9	Very high
Feb	7	High
Mar	3	Moderate
Apr	2	Low
May	1	Low
Jun	0	Low
Jul	1	Low
Aug	1	Low
Sep	2	Moderate
Oct	4	Moderate
Nov	6	High
Dec	8	Very high

Location & terrain

Where is Ushuaia?

Ushuaia sits at 54.8°S, 68.3°W, 6 m above sea level, in Argentina. The nearest listed city is Río Grande, 120 km away.

Topography around Ushuaia

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ushuaia.

Within 3 km, the terrain around Ushuaia has significant variations in elevation — a maximum elevation change of 422 m around an average of 92 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,443 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,279 m.

The land around Ushuaia is covered by trees (38%) and water (28%) within 3 km, water (34%) and trees (32%) within 16 km, and grassland (31%), trees (30%) and water (23%) within 80 km.

3 km

422 m

trees 38%

16 km

1,443 m

water 34%

80 km

2,279 m

grassland 31%

treesgrasslandartificial surfacesbare terrainsnow and icewater

← November Ushuaia year-round climate January →Best places to visit in December

December weather nearby: Río Grande 120 km · Punta Arenas 250 km · Río Gallegos 360 km · Puerto Natales 441 km · El Calafate 564 km · El Chalten 684 km · Stanley 776 km · Puerto Deseado 803 km

Argentina travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type C / I; 220 V · 50 Hz
Prices: ≈ 46% of US; price level, 2025
GDP per capita: $14,898; 2025
Happiness: 6.4 / 10; World Happiness, 2025
Homicide rate: 4.5; per 100k, 2023
Road deaths: 14.1; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: High; EF EPI 575
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 Ushuaia (-54.8108°, -68.3159°, elevation 6 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).

	Avg high (°C)	Avg low (°C)
1	10	2
2	10	2
3	10	3
4	10	3
5	10	3
6	10	3
7	10	3
8	10	3
9	10	3
10	10	3
11	10	3
12	10	3
13	10	3
14	10	3
15	10	3
16	10	3
17	10	3
18	10	3
19	10	3
20	10	3
21	10	3
22	10	3
23	10	3
24	10	3
25	10	3
26	10	3
27	11	3
28	11	3
29	11	3
30	11	4
31	11	4

	Clearer (%)	Cloudier (%)
1	19	81
2	18	82
3	18	82
4	17	83
5	16	84
6	16	84
7	16	84
8	16	84
9	16	84
10	16	84
11	16	84
12	16	84
13	15	85
14	15	85
15	15	85
16	15	85
17	15	85
18	15	85
19	15	85
20	15	85
21	15	85
22	15	85
23	15	85
24	15	85
25	14	86
26	14	86
27	14	86
28	14	86
29	14	86
30	14	86
31	14	86

	Rain chance (%)	Snow chance (%)
1	68	14
2	68	13
3	68	13
4	68	12
5	68	12
6	69	11
7	69	11
8	69	10
9	69	10
10	70	10
11	70	10
12	70	9
13	71	9
14	71	9
15	72	9
16	72	9
17	72	9
18	73	9
19	73	9
20	73	9
21	72	9
22	72	8
23	72	8
24	72	8
25	71	8
26	71	7
27	71	7
28	71	6
29	71	6
30	71	6
31	71	5

	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

	Avg high (°C)	Avg low (°C)
1	10	2
2	10	2
3	10	3
4	10	3
5	10	3
6	10	3
7	10	3
8	10	3
9	10	3
10	10	3
11	10	3
12	10	3
13	10	3
14	10	3
15	10	3
16	10	3
17	10	3
18	10	3
19	10	3
20	10	3
21	10	3
22	10	3
23	10	3
24	10	3
25	10	3
26	10	3
27	11	3
28	11	3
29	11	3
30	11	4
31	11	4

	Clearer (%)	Cloudier (%)
1	19	81
2	18	82
3	18	82
4	17	83
5	16	84
6	16	84
7	16	84
8	16	84
9	16	84
10	16	84
11	16	84
12	16	84
13	15	85
14	15	85
15	15	85
16	15	85
17	15	85
18	15	85
19	15	85
20	15	85
21	15	85
22	15	85
23	15	85
24	15	85
25	14	86
26	14	86
27	14	86
28	14	86
29	14	86
30	14	86
31	14	86

	Rain chance (%)	Snow chance (%)
1	68	14
2	68	13
3	68	13
4	68	12
5	68	12
6	69	11
7	69	11
8	69	10
9	69	10
10	70	10
11	70	10
12	70	9
13	71	9
14	71	9
15	72	9
16	72	9
17	72	9
18	73	9
19	73	9
20	73	9
21	72	9
22	72	8
23	72	8
24	72	8
25	71	8
26	71	7
27	71	7
28	71	6
29	71	6
30	71	6
31	71	5

	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

	Avg high (°C)	Avg low (°C)
1	10	2
2	10	2
3	10	3
4	10	3
5	10	3
6	10	3
7	10	3
8	10	3
9	10	3
10	10	3
11	10	3
12	10	3
13	10	3
14	10	3
15	10	3
16	10	3
17	10	3
18	10	3
19	10	3
20	10	3
21	10	3
22	10	3
23	10	3
24	10	3
25	10	3
26	10	3
27	11	3
28	11	3
29	11	3
30	11	4
31	11	4

	Clearer (%)	Cloudier (%)
1	19	81
2	18	82
3	18	82
4	17	83
5	16	84
6	16	84
7	16	84
8	16	84
9	16	84
10	16	84
11	16	84
12	16	84
13	15	85
14	15	85
15	15	85
16	15	85
17	15	85
18	15	85
19	15	85
20	15	85
21	15	85
22	15	85
23	15	85
24	15	85
25	14	86
26	14	86
27	14	86
28	14	86
29	14	86
30	14	86
31	14	86

	Rain chance (%)	Snow chance (%)
1	68	14
2	68	13
3	68	13
4	68	12
5	68	12
6	69	11
7	69	11
8	69	10
9	69	10
10	70	10
11	70	10
12	70	9
13	71	9
14	71	9
15	72	9
16	72	9
17	72	9
18	73	9
19	73	9
20	73	9
21	72	9
22	72	8
23	72	8
24	72	8
25	71	8
26	71	7
27	71	7
28	71	6
29	71	6
30	71	6
31	71	5

	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