Federal weather in December

In December, Federal sees average daytime highs of 30°C and overnight lows near 18°C, with 123 mm of rain across 8.4 wet days and about 14 hours of daylight. It is the 2nd-warmest and 4th-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 47% of the time in December, and the air most often feels humid.

Daylight stretches from about 13 h 54 min at the start of December to 14 hours by month's end. Set against the rest of the year, December is Federal's 5th-clearest and 7th-windiest month. For the whole year in context, see Federal's year-round climate.

Daytime high
30°
2nd warmest
Overnight low
18°
10th coldest
Rainfall
123 mm
8.4 wet days
Daylight
14 hours
5:51 AM – 7:51 PM
Cloud cover
47%
5th clearest
Wind
12 km/h
7th windiest
Solar energy
7.16 kWh/m²
Travel score
5.4
out of 10

Federal is human settlement in Argentina.

Founded
1880

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 29°C in the first days to 31°C by the end.

A typical December day in Federal reaches about 30°C in the afternoon and slips back to 18°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 35°C. Set against its neighbours, December runs about 2°C warmer than November and about 1°C cooler than January.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
12917
22917
32917
42917
52917
62918
72918
82918
92918
102918
112918
123018
133018
143018
153018
163018
173018
183019
193019
203019
213019
223019
233019
243019
253119
263119
273120
283120
293120
303120
313120

Federal weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 20°119913.84.7
Feb30° / 19°1169.213.15.2
Mar28° / 18°120912.26.3
Apr25° / 14°1538.611.37.2
May21° / 11°967.210.56.9
Jun18° / 787.1106.4
Jul18° / 615.910.26.5
Aug20° / 806.510.97.1
Sep22° / 11°917.111.87.3
Oct25° / 14°1419.312.87.1
Nov27° / 16°1237.713.66.8
Dec30° / 18°1238.4145.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% 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 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15941
25941
36040
46040
56040
66139
76139
86139
96139
106238
116238
126238
136238
146238
156238
166139
176139
186139
196040
206040
216040
225941
235941
245941
255941
265941
275941
285941
296040
306040
316040

Chance of precipitation in December

Any precipitation

Federal gets around 123 mm of rain over 8.4 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 27% and peaks near 29% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
125
225
325
425
525
625
725
825
925
1025
1126
1226
1326
1427
1527
1628
1728
1829
1929
2029
2129
2229
2329
2429
2529
2629
2729
2829
2929
3029
3129

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the humid band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 36% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
12229261940
22229261940
32229271940
42128271940
52128271950
62127281950
72126281950
82026291960
92025292060
101925302060
111924302070
121824302070
131723312170
141723312280
151622312380
161522302491
171521302591
1814202925101
1913202926111
2013192827111
2112192728121
2212182629132
2312182529142
2412172430152
2511172331162
2611172231172
2711162231182
2811162131182
2911152131192
3010152131202
3110152131202

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 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 54 min at the start of December to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 5:49 AM to 5:59 AM, and sunset from 7:41 PM to 7:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.95:497:41
213.95:497:42
313.95:497:42
413.95:497:43
513.95:497:44
613.95:497:45
713.95:497:45
813.95:497:46
914.05:507:47
1014.05:507:47
1114.05:507:48
1214.05:507:49
1314.05:507:49
1414.05:517:50
1514.05:517:51
1614.05:517:51
1714.05:527:52
1814.05:527:52
1914.05:527:53
2014.05:537:53
2114.05:537:54
2214.05:547:54
2314.05:547:55
2414.05:557:55
2514.05:557:56
2614.05:567:56
2714.05:567:56
2814.05:577:57
2914.05:587:57
3014.05:587:57
3114.05:597:58

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.16 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.46 kWh/m² to a high of 7.16 kWh/m² in December across the year — December's 7.16 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.1Intense
27.1Intense
37.1Intense
47.1Intense
57.2Intense
67.2Intense
77.2Intense
87.2Intense
97.2Intense
107.2Intense
117.2Intense
127.2Intense
137.2Intense
147.2Intense
157.2Intense
167.2Intense
177.2Intense
187.2Intense
197.1Intense
207.1Intense
217.1Intense
227.1Intense
237.1Intense
247.1Intense
257.1Intense
267.1Intense
277.1Intense
287.1Intense
297.1Intense
307.1Intense
317.1Intense
Planning a trip in December

Is December a good time to visit Federal?

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

5.4
Sightseeing
10th-best month of the year
7.3
Beach & pool
1st-best month of the year

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

What to pack for Federal in December

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

In December, Federal sees daytime highs around 30°C and nights near 18°C. Pack light clothes and sun protection. Worth having: rain gear. About 8 days see rain.

light clothessun protectionrain gear

UV index in Federal 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 Federal peaks around January 20 at about 13 (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 — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 20UV 13Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar11Extreme
Apr7High
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5High
Sep7High
Oct7Very high
Nov11Extreme
Dec12Extreme
Location & terrain

Where is Federal?

Federal sits at 31.0°S, 58.8°W, 71 m above sea level, in Argentina. The nearest listed city is Chajarí, 79 km away.

Topography around Federal

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

Within 3 km, the terrain around Federal has only modest variations in elevation — a maximum elevation change of 17 m around an average of 64 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 30 m; within 80 km, only modest variations in elevation — a maximum elevation change of 82 m.

The land around Federal is covered by grassland (64%) within 3 km, grassland (78%) within 16 km, and grassland (53%), cropland (22%) and trees (20%) within 80 km.

3 km
17 m
16 km
30 m
80 km
82 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Chajarí 79 km · La Paz 86 km · Concordia 87 km · Salto 92 km · Santa Elena 96 km · Villaguay 104 km · San Javier 118 km · Esquina 127 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 Federal (-30.9562°, -58.7797°, elevation 71 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).