Tandil weather in December

In December, Tandil sees average daytime highs of 26°C and overnight lows near 13°C, with 76 mm of rain across 8.6 wet days and about 14.5 hours of daylight. It is the 3rd-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 24°C in the first days to 27°C by the end. The sky is clear or mostly clear about 51% of the time in December, and the air most often feels dry.

Daylight stretches from about 14 h 24 min at the start of December to 14 h 30 min by month's end. Set against the rest of the year, December is Tandil's 2nd-clearest and 1st-windiest month. For the whole year in context, see Tandil's year-round climate.

Daytime high
26°
3rd warmest
Overnight low
13°
10th coldest
Rainfall
76 mm
8.6 wet days
Daylight
14 h 36 min
5:36 AM – 8:09 PM
Cloud cover
43%
2nd clearest
Wind
15 km/h
1st windiest
Solar energy
7.59 kWh/m²
Travel score
7.2
out of 10

Tandil is city in Buenos Aires Province, Argentina.

Founded
1823

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 24°C in the first days to 27°C by the end.

A typical December day in Tandil reaches about 26°C in the afternoon and slips back to 13°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 31°C. Set against its neighbours, December runs about 3°C warmer than November and about 1°C cooler than January.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12412
22412
32412
42512
52512
62512
72512
82512
92512
102512
112512
122613
132613
142613
152613
162613
172613
182613
192613
202713
212714
222714
232714
242714
252714
262714
272714
282714
292714
302714
312714

How December really feels in Tandil

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.

Tandil weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 15°819.114.36.9
Feb26° / 14°72813.47.1
Mar24° / 13°74812.37.3
Apr20° / 817.611.16.7
May16° / 425.6105.4
Jun13° / 414.89.53.9
Jul12° / 405.39.73.5
Aug14° / 515.610.64.6
Sep16° / 59711.75.4
Oct19° / 859.5136.2
Nov23° / 10°919.6147.0
Dec26° / 13°768.614.57.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 34%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26535
36535
46634
56634
66634
76634
86634
96634
106634
116634
126733
136634
146634
156634
166733
176733
186634
196634
206634
216733
226832
236832
246733
256733
266733
276634
286634
296634
306634
316634

Chance of precipitation in December

Any precipitation

Tandil gets around 76 mm of rain over 8.6 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 28% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
329
429
528
628
728
827
927
1027
1126
1226
1326
1427
1527
1627
1727
1828
1928
2028
2128
2228
2328
2428
2528
2628
2728
2827
2928
3028
3128

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 58% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1682381
2682291
3682291
4682291
5682291
66623101
76623101
86523102
96523102
106423112
116423112
126423112
136323122
146323122
156223132
166123142
176023143
185923153
195723173
205623183
215423194
225323204
235123215
245023216
254923226
264823237
274623237
284523248
294423248
304324249
314324259

Wind in December

Winds average 15 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 14 h 24 min at the start of December to 14 h 30 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 5:35 AM to 5:44 AM, and sunset from 7:58 PM to 8:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.45:357:58
214.45:357:59
314.45:358:00
414.45:348:00
514.45:348:01
614.55:348:02
714.55:348:03
814.55:348:04
914.55:358:05
1014.55:358:05
1114.55:358:06
1214.55:358:07
1314.55:358:07
1414.55:358:08
1514.65:368:09
1614.65:368:09
1714.65:368:10
1814.65:378:11
1914.65:378:11
2014.65:378:12
2114.65:388:12
2214.65:388:13
2314.65:398:13
2414.65:398:14
2514.65:408:14
2614.65:408:14
2714.65:418:15
2814.65:428:15
2914.65:428:15
3014.55:438:16
3114.55:448:16

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.59 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.01 kWh/m² to a high of 7.59 kWh/m² in December across the year — December's 7.59 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.4Intense
27.4Intense
37.4Intense
47.4Intense
57.5Intense
67.5Intense
77.5Intense
87.5Intense
97.5Intense
107.5Intense
117.5Intense
127.5Intense
137.6Intense
147.6Intense
157.6Intense
167.6Intense
177.6Intense
187.6Intense
197.6Intense
207.6Intense
217.6Intense
227.6Intense
237.6Intense
247.6Intense
257.6Intense
267.6Intense
277.6Intense
287.6Intense
297.6Intense
307.6Intense
317.6Intense
Planning a trip in December

Is December a good time to visit Tandil?

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

7.2
Sightseeing
2nd-best month of the year
6.8
Beach & pool
2nd-best month of the year

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

What to pack for Tandil in December

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

In December, Tandil sees daytime highs around 26°C and nights near 13°C. Pack sun protection. Worth having: light clothes and rain gear. About 9 days see rain.

sun protectionlight clothesrain gear

UV index in Tandil 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 Tandil peaks around January 1 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 1UV 12Jun 20UV 2
UV index (midday)Level
Jan12Extreme
Feb11Extreme
Mar9Very high
Apr6High
May3Moderate
Jun2Moderate
Jul3Moderate
Aug3Moderate
Sep5Moderate
Oct7Very high
Nov10Extreme
Dec12Extreme
Location & terrain

Where is Tandil?

Tandil sits at 37.3°S, 59.1°W, 207 m above sea level, in Argentina. The nearest listed city is Ayacucho, 61 km away.

Topography around Tandil

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

Within 3 km, the terrain around Tandil has only modest variations in elevation — a maximum elevation change of 141 m around an average of 209 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 353 m; within 80 km, significant variations in elevation — a maximum elevation change of 467 m.

The land around Tandil is covered by artificial surfaces (50%) and grassland (31%) within 3 km, cropland (53%) and grassland (37%) within 16 km, and cropland (51%) and grassland (48%) within 80 km.

3 km
141 m
16 km
353 m
80 km
467 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Ayacucho 61 km · Benito Juárez 70 km · Azul 89 km · Balcarce 97 km · Olavarría 116 km · Necochea 141 km · Las Flores 146 km · Tres Arroyos 154 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 Tandil (-37.3287°, -59.1369°, elevation 207 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).