Santa Fe weather in December

In December, Santa Fe sees average daytime highs of 29°C and overnight lows near 19°C, with 135 mm of rain across 8.9 wet days and about 14 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 30°C by the end. The sky is clear or mostly clear about 49% 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 Santa Fe's 5th-clearest and 6th-windiest month. For the whole year in context, see Santa Fe's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
19°
10th coldest
Rainfall
135 mm
8.9 wet days
Daylight
14 h 06 min
5:57 AM – 8:01 PM
Cloud cover
44%
5th clearest
Wind
11 km/h
6th windiest
Solar energy
7.22 kWh/m²
Travel score
5.6
out of 10

Santa Fe is city in and capital of Santa Fe Province, Argentina.

Density
1,460/km²
people per km²
Founded
1573

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 30°C by the end.

A typical December day in Santa Fe reaches about 29°C in the afternoon and slips back to 19°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 34°C. Set against its neighbours, December runs about 2°C warmer than November and about 1°C cooler than January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12817
22818
32918
42918
52918
62918
72918
82918
92918
102918
112918
122918
132918
142919
152919
163019
173019
183019
193019
203019
213019
223019
233019
243020
253020
263020
273020
283020
293020
303020
313020

Santa Fe 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 daysDaylight (hours)Travel score
Jan31° / 20°1128.713.85.0
Feb29° / 20°1188.713.25.6
Mar28° / 18°1388.212.26.7
Apr24° / 15°1148.611.27.3
May20° / 12°746.110.47.0
Jun18° / 445.1106.4
Jul17° / 374.510.16.3
Aug20° / 484.910.87.3
Sep22° / 11°655.811.87.5
Oct25° / 14°1329.612.87.1
Nov27° / 16°1167.913.66.9
Dec29° / 19°1358.9145.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% 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 36%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16337
26238
36337
46436
56436
66535
76535
86535
96535
106634
116634
126634
136733
146733
156634
166634
176634
186634
196535
206535
216535
226535
236436
246436
256337
266337
276337
286238
296238
306337
316337

Chance of precipitation in December

Any precipitation

Santa Fe gets around 135 mm of rain over 8.9 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 29% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
126
226
326
427
527
627
728
828
929
1029
1129
1230
1330
1431
1531
1631
1731
1831
1931
2030
2130
2230
2329
2429
2529
2629
2729
2828
2928
3028
3128

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 30% of days. Sticky, muggy-or-worse air turns up on roughly 37% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11930291930
21830301930
31829302030
41828312030
51827312030
61727322040
71726322140
81725332150
91624332150
101623332250
111523342260
121522342360
131421342370
141421342470
151320342580
161319332690
171219332790
1811183228100
1911183128111
2010173129121
2110173030131
229162930141
239162831161
249162631171
258162532181
268162532191
278152432201
287152332211
297152332221
307152232231
316152231241

Wind in December

Winds average 11 km/h in December.

Across December, daily wind ranges from about 11 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
112calm
212calm
312calm
412calm
512calm
612calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

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 5:55 AM to 6:05 AM, and sunset from 7:50 PM to 8:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.95:557:50
213.95:557:51
313.95:557:52
414.05:557:52
514.05:557:53
614.05:557:54
714.05:557:55
814.05:557:55
914.05:567:56
1014.05:567:57
1114.05:567:57
1214.05:567:58
1314.05:567:59
1414.05:577:59
1514.05:578:00
1614.15:578:01
1714.15:588:01
1814.15:588:02
1914.15:588:02
2014.15:598:03
2114.15:598:03
2214.16:008:04
2314.16:008:04
2414.16:018:05
2514.16:018:05
2614.16:028:06
2714.16:028:06
2814.16:038:06
2914.06:048:07
3014.06:048:07
3114.06:058:07

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.22 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.45 kWh/m² to a high of 7.22 kWh/m² in December across the year — December's 7.22 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.1Intense
27.1Intense
37.2Intense
47.2Intense
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
197.2Intense
207.2Intense
217.2Intense
227.2Intense
237.2Intense
247.2Intense
257.2Intense
267.2Intense
277.2Intense
287.2Intense
297.2Intense
307.2Intense
317.2Intense
Planning a trip in December

Is December a good time to visit Santa Fe?

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

5.6
Sightseeing
10th-best month of the year
7.3
Beach & pool
1st-best month of the year

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

What to pack for Santa Fe in December

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

In December, Santa Fe sees daytime highs around 29°C and nights near 19°C. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

light clothessun protectionrain gear

UV index in Santa Fe 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 Santa Fe peaks around January 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateHighVery highExtremeJan 17UV 13Jun 21UV 3
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr7High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug5Moderate
Sep7High
Oct9Very high
Nov11Extreme
Dec13Extreme
Location & terrain

Where is Santa Fe?

Santa Fe sits at 31.6°S, 60.7°W, 21 m above sea level, in Argentina. The nearest listed city is Santo Tomé, 6.0 km away.

Topography around Santa Fe

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

Within 3 km, the terrain around Santa Fe has only modest variations in elevation — a maximum elevation change of 21 m around an average of 17 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 51 m; within 80 km, only modest variations in elevation — a maximum elevation change of 116 m.

The land around Santa Fe is covered by artificial surfaces (58%) within 3 km, grassland (29%) and cropland (20%) within 16 km, and cropland (58%) and grassland (22%) within 80 km.

3 km
21 m
16 km
51 m
80 km
116 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Santo Tomé 6.0 km · Paraná 19 km · Esperanza 31 km · Coronda 41 km · Diamante 47 km · Crespo 57 km · Gálvez 64 km · Rafaela 86 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 Santa Fe (-31.6488°, -60.7087°, elevation 21 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).