Termas de Río Hondo weather in December

In December, Termas de Río Hondo sees average daytime highs of 33°C and overnight lows near 22°C, with 140 mm of rain across 12.7 wet days and about 13.7 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 31% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 36 min at the start of December to 13 h 42 min by month's end. Set against the rest of the year, December is Termas de Río Hondo's 11th-clearest and 5th-windiest month. For the whole year in context, see Termas de Río Hondo's year-round climate.

Daytime high
33°
1st warmest
Overnight low
22°
11th coldest
Rainfall
140 mm
12.7 wet days
Daylight
13 h 42 min
6:24 AM – 8:07 PM
Cloud cover
57%
11th clearest
Wind
10 km/h
5th windiest
Solar energy
6.18 kWh/m²
Travel score
3.5
out of 10

Termas de Río Hondo is city in Argentina.

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 33°C through the month.

A typical December day in Termas de Río Hondo reaches about 33°C in the afternoon and slips back to 22°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 38°C. Set against its neighbours, December runs about 1°C warmer than November and on par with January.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13221
23221
33221
43221
53221
63221
73221
83221
93221
103222
113222
123222
133222
143222
153322
163322
173322
183322
193322
203322
213322
223322
233323
243323
253323
263323
273323
283323
293323
303323
313323

How December really feels in Termas de Río Hondo

Once humidity and wind are folded in, December averages 27 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
27
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Termas de Río Hondo weather by month

How December compares with the rest of the year at a glance. December is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 23°17313.413.53.5
Feb31° / 22°13711.7134.2
Mar29° / 20°13812.712.25.2
Apr26° / 17°751011.46.8
May23° / 14°326.210.77.5
Jun20° / 10°225.110.37.3
Jul21° / 133.110.48.0
Aug24° / 11°122.3118.6
Sep27° / 15°274.111.87.6
Oct30° / 18°668.412.75.4
Nov31° / 20°9010.313.44.3
Dec33° / 22°14012.713.73.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% 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 47%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35446
45347
55347
65446
75446
85446
95446
105446
115446
125446
135446
145446
155446
165446
175446
185446
195347
205347
215347
225347
235248
245248
255149
265149
275149
285050
295050
305050
314951

Chance of precipitation in December

Any precipitation

Termas de Río Hondo gets around 140 mm of rain over 12.7 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 41% and peaks near 44% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
143
243
344
443
543
643
743
843
942
1042
1141
1241
1340
1440
1540
1639
1739
1839
1938
2039
2139
2239
2339
2440
2540
2640
2741
2841
2941
3042
3142

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the muggy band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 53% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11319332690
213183327100
312183227100
412173228100
512173129110
612163030110
712162931120
812162832130
912152733130
1012152633140
1111152634140
1211142534150
1311142535150
1410142435160
1510132436170
1610132336180
1710122336180
1810122236191
1910122236201
209112235221
219112135231
229102135241
238102134261
24892134271
25792133281
26782133301
27782132311
28682132321
29672131332
30572131342
31572131352

Wind in December

Winds average 10 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
299calm
309calm
319calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 36 min at the start of December to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 6:21 AM to 6:31 AM, and sunset from 7:58 PM to 8:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.66:217:58
213.66:217:58
313.66:217:59
413.66:218:00
513.76:218:00
613.76:218:01
713.76:218:02
813.76:228:02
913.76:228:03
1013.76:228:04
1113.76:228:04
1213.76:228:05
1313.76:238:06
1413.76:238:06
1513.76:238:07
1613.76:248:07
1713.76:248:08
1813.76:258:09
1913.76:258:09
2013.76:258:10
2113.76:268:10
2213.76:268:11
2313.76:278:11
2413.76:278:11
2513.76:288:12
2613.76:288:12
2713.76:298:13
2813.76:298:13
2913.76:308:13
3013.76:318:14
3113.76:318:14

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.18 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.85 kWh/m² to a high of 6.18 kWh/m² in December across the year — December's 6.18 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
36.0Bright
46.0Bright
56.0Bright
66.0Intense
76.0Intense
86.0Intense
96.0Intense
106.1Intense
116.1Intense
126.1Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.2Intense
186.3Intense
196.3Intense
206.3Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
316.3Intense
Planning a trip in December

Hazard calendar for Termas de Río Hondo

In seasonPeak

In December, Termas de Río Hondo sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Termas de Río Hondo's rainy season runs November–March, when most of the year's rain falls.

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

Is December a good time to visit Termas de Río Hondo?

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

3.5
Sightseeing
11th-best month of the year
6.0
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Termas de Río Hondo.

What to pack for Termas de Río Hondo in December

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

In December, Termas de Río Hondo sees daytime highs around 33°C and nights near 22°C. Pack light clothes and sun protection. Worth having: rain gear. About 13 days see rain.

light clothessun protectionrain gear

UV index in Termas de Río Hondo in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Termas de Río Hondo peaks around January 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeHighModerateHighVery highExtremeJan 17UV 14Jun 23UV 4
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar12Extreme
Apr7Very high
May6High
Jun4Moderate
Jul4Moderate
Aug6High
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme
Location & terrain

Where is Termas de Río Hondo?

Termas de Río Hondo sits at 27.5°S, 64.9°W, 260 m above sea level, in Argentina. The nearest listed city is Bella Vista, 67 km away.

Topography around Termas de Río Hondo

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Termas de Río Hondo.

Within 3 km, the terrain around Termas de Río Hondo has only modest variations in elevation — a maximum elevation change of 47 m around an average of 264 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 119 m; within 80 km, significant variations in elevation — a maximum elevation change of 557 m.

The land around Termas de Río Hondo is covered by trees (40%) and artificial surfaces (28%) within 3 km, trees (32%) and shrubs (26%) within 16 km, and cropland (42%), trees (26%) and shrubs (23%) within 80 km.

3 km
47 m
16 km
119 m
80 km
557 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Bella Vista 67 km · Santiago del Estero 68 km · Famaillá 72 km · Monteros 73 km · Aguilares 75 km · Alderetes 80 km · San Miguel de Tucuman 83 km · Yerba Buena 87 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 Termas de Río Hondo (-27.4936°, -64.8597°, elevation 260 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).