Fontana weather in December

In December, Fontana sees average daytime highs of 31°C and overnight lows near 21°C, with 147 mm of rain across 10 wet days and about 13.7 hours of daylight. It is the 2nd-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 30°C in the first days to 32°C by the end. The sky is clear or mostly clear about 46% of the time in December, and the air most often feels oppressive.

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 Fontana's 7th-clearest and 7th-windiest month. For the whole year in context, see Fontana's year-round climate.

Daytime high
31°
2nd warmest
Overnight low
21°
10th coldest
Rainfall
147 mm
10 wet days
Daylight
13 h 42 min
6:01 AM – 7:44 PM
Cloud cover
49%
7th clearest
Wind
12 km/h
7th windiest
Solar energy
6.85 kWh/m²
Travel score
4.6
out of 10

Fontana is municipality 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

Highs climb over the month, from about 30°C in the first days to 32°C by the end.

A typical December day in Fontana reaches about 31°C in the afternoon and slips back to 21°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 35°C. Set against its neighbours, December runs about 2°C warmer than November and about 1°C cooler than January.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13020
23020
33020
43020
53020
63020
73020
83020
93120
103121
113121
123121
133121
143121
153121
163121
173121
183121
193121
203221
213221
223222
233222
243222
253222
263222
273222
283222
293222
303222
313222

How December really feels in Fontana

Once humidity and wind are folded in, December averages 23 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
23
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.

Fontana 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
Jan32° / 22°13810.713.54.0
Feb31° / 22°13010.5134.4
Mar30° / 20°13110.512.25.3
Apr26° / 18°1669.711.46.8
May23° / 14°1028.110.77.2
Jun21° / 12°677.510.36.9
Jul21° / 11°606.910.47.1
Aug23° / 12°656.2117.8
Sep25° / 14°1068.511.87.4
Oct27° / 17°18010.712.76.5
Nov29° / 19°1649.513.45.7
Dec31° / 21°1471013.74.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% 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 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35842
45842
55941
65941
75941
86040
96040
106139
116139
126139
136238
146238
156238
166337
176238
186337
196238
206337
216238
226238
236139
246040
256040
266040
275842
285842
295941
305941
315842

Chance of precipitation in December

Any precipitation

Fontana gets around 147 mm of rain over 10 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 32% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
132
231
331
431
531
631
730
830
930
1030
1131
1231
1331
1432
1532
1633
1733
1833
1934
2034
2134
2234
2334
2435
2534
2634
2734
2834
2933
3033
3132

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 70% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
14122333262
24112233272
34112233272
44112233282
54112133282
64112133292
74112133293
84112133293
93102133303
103102133303
113102133303
123102133304
133102033304
14392033314
15292033315
16291933315
17291933325
18291833336
19281832337
20281831347
21281731358
22171730368
23171729379
241717283710
251716283811
261616273811
271616263812
281616263813
291616253913
301616253914
310616243914

Wind in December

Winds average 12 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
112light breeze
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2911calm
3011calm
3111calm

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 5:58 AM to 6:08 AM, and sunset from 7:34 PM to 7:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:587:34
213.65:587:35
313.65:587:36
413.65:587:36
513.65:587:37
613.75:587:38
713.75:587:38
813.75:587:39
913.75:597:40
1013.75:597:40
1113.75:597:41
1213.75:597:42
1313.76:007:42
1413.76:007:43
1513.76:007:43
1613.76:017:44
1713.76:017:45
1813.76:017:45
1913.76:027:46
2013.76:027:46
2113.76:037:47
2213.76:037:47
2313.76:047:48
2413.76:047:48
2513.76:057:48
2613.76:057:49
2713.76:067:49
2813.76:067:50
2913.76:077:50
3013.76:077:50
3113.76:087:51

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.85 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.61 kWh/m² to a high of 6.85 kWh/m² in December across the year — December's 6.85 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.7Intense
26.7Intense
36.7Intense
46.7Intense
56.7Intense
66.7Intense
76.8Intense
86.8Intense
96.8Intense
106.8Intense
116.8Intense
126.9Intense
136.9Intense
146.9Intense
156.9Intense
166.9Intense
176.9Intense
186.9Intense
196.9Intense
206.9Intense
216.9Intense
226.9Intense
236.9Intense
246.9Intense
256.9Intense
266.9Intense
276.9Intense
286.9Intense
296.9Intense
306.9Intense
316.9Intense
Planning a trip in December

Is December a good time to visit Fontana?

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

4.6
Sightseeing
10th-best month of the year
6.8
Beach & pool
3rd-best month of the year

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

What to pack for Fontana in December

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

In December, Fontana sees daytime highs around 31°C and nights near 21°C. Pack light clothes and sun protection. Worth having: rain gear. About 10 days see rain.

light clothessun protectionrain gear

UV index in Fontana 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 Fontana peaks around January 22 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighExtremeJan 22UV 14Jun 21UV 4
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar12Extreme
Apr8Very high
May5High
Jun4Moderate
Jul4Moderate
Aug5Moderate
Sep8Very high
Oct5High
Nov12Extreme
Dec13Extreme

Air quality in Fontana in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Fontana is worst in September — around 18 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (May, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 918 µg/m³May 127 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar9Good
Apr7Good
May7Good
Jun8Good
Jul12Good
Aug17Moderate
Sep18Moderate
Oct11Good
Nov9Good
Dec8Good
Location & terrain

Where is Fontana?

Fontana sits at 27.4°S, 59.0°W, 49 m above sea level, in Argentina. The nearest listed city is Resistencia, 7.0 km away.

Topography around Fontana

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

Within 3 km, the terrain around Fontana has only modest variations in elevation — a maximum elevation change of 18 m around an average of 52 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 49 m.

The land around Fontana is covered by trees (42%) and artificial surfaces (30%) within 3 km, trees (45%) and grassland (31%) within 16 km, and trees (44%) and grassland (40%) within 80 km.

3 km
18 m
16 km
30 m
80 km
49 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Resistencia 7.0 km · Barranqueras 12 km · Corrientes 21 km · San Luis del Palmar 48 km · San Lorenzo 84 km · Pilar 96 km · Saladas 101 km · General José de San Martín 103 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 Fontana (-27.4204°, -59.0373°, elevation 49 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).