Rivadavia weather in December

In December, Rivadavia sees average daytime highs of 30°C and overnight lows near 17°C, with 84 mm of rain across 11.2 wet days and about 14.2 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 29°C in the first days to 31°C by the end. The sky is clear or mostly clear about 63% of the time in December, and the air most often feels dry.

Daylight stretches from about 14 hours at the start of December to 14 h 12 min by month's end. Set against the rest of the year, December is Rivadavia's 5th-clearest and 3rd-windiest month. For the whole year in context, see Rivadavia's year-round climate.

Daytime high
30°
2nd warmest
Overnight low
17°
11th coldest
Rainfall
84 mm
11.2 wet days
Daylight
14 h 12 min
6:25 AM – 8:36 PM
Cloud cover
36%
5th clearest
Wind
12 km/h
3rd windiest
Solar energy
7.92 kWh/m²
Travel score
5.0
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 29°C in the first days to 31°C by the end.

A typical December day in Rivadavia reaches about 30°C in the afternoon and slips back to 17°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 36°C. Set against its neighbours, December runs about 2°C warmer than November and on par with January.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
12916
22916
32916
42916
52916
62916
73016
83017
93017
103017
113017
123017
133017
143017
153017
163117
173118
183118
193118
203118
213118
223118
233118
243118
253118
263118
273118
283118
293119
303119
313119

How December really feels in Rivadavia

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.

Rivadavia weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan31° / 19°10213013.94.6
Feb29° / 17°8110.8013.25.6
Mar26° / 15°799.8012.37.0
Apr22° / 11°416.7011.27.4
May17° / 234.5010.36.4
Jun14° / 112.40.19.85.2
Jul14° / 102.60.5105.2
Aug17° / 173.20.410.86.8
Sep21° / 2040.111.87.8
Oct25° / 12°406.6012.87.8
Nov28° / 15°618.9013.76.5
Dec30° / 17°8411.2014.25.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 63% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 18% of December, with mostly cloudy or overcast conditions the remaining 19%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17921
27921
37822
47822
57822
67822
77822
87921
97921
107921
118020
128020
138119
148119
158119
168218
178218
188317
198416
208416
218416
228416
238416
248416
258317
268317
278218
288218
298218
308218
318020

Chance of precipitation in December

Any precipitation

Rivadavia gets around 84 mm of rain over 11.2 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 36% and peaks near 42% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
136
237
337
437
537
637
737
836
936
1036
1136
1236
1336
1435
1535
1635
1734
1834
1934
2034
2134
2235
2335
2436
2537
2638
2738
2839
2940
3041
3142

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 70% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1811720
2801820
3801820
4791830
5791830
6791830
7771940
8771940
9761950
10761950
11751960
12751960
13751960
14741970
15741970
16732070
17712081
18712081
19692191
20692191
21682291
226623101
236324112
246225112
256026122
265926132
275827132
285628142
295428153
305229163
315129173

Wind in December

Winds average 12 km/h in December.

Across December, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 14 hours at the start of December to 14 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 6:23 AM to 6:32 AM, and sunset from 8:25 PM to 8:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.06:238:25
214.16:228:25
314.16:228:26
414.16:228:27
514.16:228:28
614.16:238:29
714.16:238:29
814.16:238:30
914.16:238:31
1014.16:238:32
1114.26:238:32
1214.26:238:33
1314.26:248:34
1414.26:248:34
1514.26:248:35
1614.26:258:36
1714.26:258:36
1814.26:258:37
1914.26:268:37
2014.26:268:38
2114.26:268:38
2214.26:278:39
2314.26:278:39
2414.26:288:40
2514.26:288:40
2614.26:298:40
2714.26:308:41
2814.26:308:41
2914.26:318:41
3014.26:318:42
3114.26:328:42

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.92 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.8 kWh/m² to a high of 7.92 kWh/m² in December across the year — December's 7.92 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.8Intense
27.8Intense
37.8Intense
47.8Intense
57.8Intense
67.8Intense
77.9Intense
87.9Intense
97.9Intense
107.9Intense
117.9Intense
127.9Intense
137.9Intense
147.9Intense
158.0Intense
168.0Intense
178.0Intense
188.0Intense
198.0Intense
208.0Intense
218.0Intense
228.0Intense
237.9Intense
247.9Intense
257.9Intense
267.9Intense
277.9Intense
287.9Intense
297.8Intense
307.8Intense
317.8Intense
Planning a trip in December

Hazard calendar for Rivadavia

In seasonPeak

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

Rivadavia'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 Rivadavia?

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

5.0
Sightseeing
11th-best month of the year
7.0
Beach & pool
3rd-best month of the year

December is a reasonable time to visit Rivadavia for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Rivadavia in December

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

In December, Rivadavia sees daytime highs around 30°C and nights near 17°C. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

UV index in Rivadavia in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rivadavia peaks around January 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateHighVery highExtremeJan 18UV 14Jun 19UV 3
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar10Extreme
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct10Very high
Nov12Extreme
Dec13Extreme
Location & terrain

Where is Rivadavia?

Rivadavia sits at 33.2°S, 68.5°W, 653 m above sea level, in Argentina. The nearest listed city is San Martín, 12 km away.

Topography around Rivadavia

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

Within 3 km, the terrain around Rivadavia has only modest variations in elevation — a maximum elevation change of 21 m around an average of 659 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 205 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,923 m.

The land around Rivadavia is covered by grassland (39%), artificial surfaces (22%) and cropland (21%) within 3 km, grassland (31%), shrubs (30%) and cropland (29%) within 16 km, and shrubs (71%) within 80 km.

3 km
21 m
16 km
205 m
80 km
2,923 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: San Martín 12 km · Rodeo del Medio 30 km · Perdriel 42 km · Mendoza 49 km · Tupungato 67 km · Tunuyán 67 km · San Rafael 159 km · Pocito 168 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 Rivadavia (-33.191°, -68.4622°, elevation 653 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).