Rawson weather in December

In December, Rawson sees average daytime highs of 23°C and overnight lows near 14°C, with 16 mm of rain across 2.8 wet days and about 15.2 hours of daylight. It is the 3rd-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 24°C by the end. The sky is clear or mostly clear about 53% of the time in December, and the air most often feels dry.

Daylight stretches from about 15 hours at the start of December to 15 h 12 min by month's end. Set against the rest of the year, December is Rawson's 3rd-clearest and 3rd-windiest month. For the whole year in context, see Rawson's year-round climate.

Daytime high
23°
3rd warmest
Overnight low
14°
10th coldest
Rainfall
16 mm
2.8 wet days
Daylight
15 h 12 min
5:41 AM – 8:52 PM
Cloud cover
38%
3rd clearest
Wind
21 km/h
3rd windiest
Solar energy
8.11 kWh/m²
Travel score
8.4
out of 10

Rawson is capital of Chubut, Argentina.

Founded
1865

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 22°C in the first days to 24°C by the end.

A typical December day in Rawson reaches about 23°C in the afternoon and slips back to 14°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 28°C. Set against its neighbours, December runs about 2°C warmer than November and about 2°C cooler than January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12213
22213
32213
42214
52214
62214
72214
82214
92214
102214
112314
122314
132314
142314
152314
162314
172314
182315
192315
202315
212315
222415
232415
242415
252415
262415
272415
282415
292415
302416
312416

How December really feels in Rawson

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 0 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
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Rawson weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 16°132.714.88.6
Feb24° / 16°223.113.88.5
Mar22° / 14°223.512.48.1
Apr19° / 11°203.210.87.3
May15° / 264.69.55.3
Jun12° / 254.58.93.6
Jul11° / 173.99.13.4
Aug13° / 153.710.24.3
Sep15° / 173.611.75.3
Oct18° / 10°163.513.26.9
Nov21° / 12°152.814.57.7
Dec23° / 14°162.815.28.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 22% of December, with mostly cloudy or overcast conditions the remaining 25%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17327
27327
37426
47426
57426
67426
77327
87327
97327
107327
117426
127426
137426
147426
157426
167426
177426
187525
197525
207624
217624
227624
237723
247822
257822
267921
277921
287921
297921
307921
317921

Chance of precipitation in December

Any precipitation

Rawson gets around 16 mm of rain over 2.8 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 9% and peaks near 10% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
18
28
38
48
59
69
79
89
99
109
119
129
139
149
159
169
179
189
199
209
219
229
239
249
259
269
279
289
299
3010
3110

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 96% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19910
29910
39910
49910
59910
69910
79820
89820
99820
109820
119820
129820
139730
149730
159730
169730
179730
189730
199640
209640
219640
229550
239550
249361
259361
269271
279271
289181
299181
309181
319181

Wind in December

Winds average 21 km/h in December.

Across December, daily wind ranges from about 21 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2121breezy
2221breezy
2321breezy
2421breezy
2521breezy
2621breezy
2721breezy
2821breezy
2921breezy
3021breezy
3121breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 15 hours at the start of December to 15 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over December. Sunrise moves from 5:41 AM to 5:48 AM, and sunset from 8:39 PM to 8:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.05:418:39
215.05:418:40
315.05:408:41
415.05:408:42
515.15:408:43
615.15:408:44
715.15:408:45
815.15:408:46
915.15:408:47
1015.15:408:48
1115.15:408:49
1215.25:408:50
1315.25:408:50
1415.25:408:51
1515.25:408:52
1615.25:418:52
1715.25:418:53
1815.25:418:54
1915.25:428:54
2015.25:428:55
2115.25:428:55
2215.25:438:56
2315.25:438:56
2415.25:448:57
2515.25:448:57
2615.25:458:57
2715.25:468:58
2815.25:468:58
2915.25:478:58
3015.25:488:58
3115.25:488:59

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 8.11 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.59 kWh/m² to a high of 8.11 kWh/m² in December across the year — December's 8.11 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.9Intense
27.9Intense
37.9Intense
48.0Intense
58.0Intense
68.0Intense
78.0Intense
88.0Intense
98.0Intense
108.0Intense
118.0Intense
128.1Intense
138.1Intense
148.1Intense
158.1Intense
168.1Intense
178.1Intense
188.1Intense
198.1Intense
208.1Intense
218.2Intense
228.2Intense
238.2Intense
248.2Intense
258.2Intense
268.2Intense
278.2Intense
288.1Intense
298.1Intense
308.1Intense
318.1Intense
Planning a trip in December

Is December a good time to visit Rawson?

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

8.4
Sightseeing
3rd-best month of the year
6.4
Beach & pool
3rd-best month of the year

December is one of the better times to visit Rawson for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Rawson in December

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

In December, Rawson sees daytime highs around 23°C and nights near 14°C. Pack sun protection. Worth having: light clothes and a windbreaker.

sun protectionlight clothesa windbreaker

Sea temperature near Rawson in December

The nearest coast averages about 15°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 20 km away) is warmest in February at about 17°C and coldest in August near 9°C.

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

10°15°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan17Cool
Feb17Cool
Mar17Cool
Apr15Cool
May13Bracing
Jun12Bracing
Jul10Bracing
Aug9Bracing
Sep9Bracing
Oct11Bracing
Nov13Bracing
Dec15Bracing

UV index in Rawson in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rawson peaks around December 22 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateLowModerateVery highExtremeDec 22UV 12Jun 19UV 1
UV index (midday)Level
Jan11Extreme
Feb10Extreme
Mar7High
Apr4Moderate
May2Moderate
Jun1Low
Jul2Low
Aug2Moderate
Sep4Moderate
Oct7High
Nov9Very high
Dec12Extreme
Location & terrain

Where is Rawson?

Rawson sits at 43.3°S, 65.1°W, 3 m above sea level, in Argentina. The nearest listed city is Trelew, 17 km away.

San Antonio OesteViedmaCarmen de PatagonesComodoro RivadaviaCaleta OliviaPico Truncado

Topography around Rawson

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

Within 3 km, the terrain around Rawson has only modest variations in elevation — a maximum elevation change of 19 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 189 m; within 80 km, significant variations in elevation — a maximum elevation change of 336 m.

The land around Rawson is covered by shrubs (32%) and grassland (28%) within 3 km, shrubs (45%), water (25%) and grassland (21%) within 16 km, and shrubs (57%) and water (33%) within 80 km.

3 km
19 m
16 km
189 m
80 km
336 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Trelew 17 km · Puerto Madryn 59 km · San Antonio Oeste 286 km · Viedma 326 km · Carmen de Patagones 328 km · Comodoro Rivadavia 342 km · Caleta Olivia 398 km · Pico Truncado 449 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
Roman Catholic 63%none 19%Evangelical 15%Jehovah's Witness and Church of Jesus Christ 1%

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 Rawson (-43.3003°, -65.1056°, elevation 3 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).