Santa Catarina weather in December

In December, Santa Catarina sees average daytime highs of 19°C and overnight lows near 8°C, with 26 mm of precipitation across 4.8 wet days and about 10.4 hours of daylight. It is the 11th-warmest and 12th-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 18°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 10 h 30 min at the start of December to 10 h 24 min by month's end. Set against the rest of the year, December is Santa Catarina's 8th-clearest and 11th-windiest month. For the whole year in context, see Santa Catarina's year-round climate.

Daytime high
19°
11th warmest
Overnight low
2nd coldest
Precipitation
26 mm
4.8 wet days
Daylight
10 h 24 min
7:26 AM – 5:50 PM
Cloud cover
44%
8th clearest
Wind
6 km/h
11th windiest
Solar energy
3.8 kWh/m²
Travel score
7.0
out of 10

Santa Catarina is municipal seat of Santa Catarina, State of Nuevo León, Mexico.

Density
309/km²
people per km²
Founded
1596

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 19°C in the first days to 18°C by the end.

A typical December day in Santa Catarina reaches about 19°C in the afternoon and slips back to 8°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 26°C. Set against its neighbours, December runs about 3°C cooler than November and on par with January.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12010
22010
32010
4199
5199
6199
7199
8199
9199
10199
11199
12199
13199
14199
15198
16198
17198
18188
19188
20188
21188
22188
23188
24188
25188
26188
27188
28188
29188
30188
31188

Santa Catarina weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan18° / 315.610.66.8
Feb21° / 10°285.211.17.4
Mar24° / 13°446.911.87.7
Apr27° / 16°407.112.67.1
May29° / 19°468.513.25.9
Jun30° / 20°425.913.65.5
Jul30° / 20°50613.45.4
Aug30° / 20°365.312.95.5
Sep27° / 19°11811.612.26.2
Oct25° / 15°58711.47.7
Nov21° / 11°345.410.77.5
Dec19° / 264.810.47.0

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 13% of December, with mostly cloudy or overcast conditions the remaining 36%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16733
26634
36535
46436
56436
66436
76436
86337
96337
106337
116337
126436
136436
146436
156535
166535
176535
186535
196535
206535
216535
226337
236337
246337
256238
266238
276238
286139
296139
306139
316139

Chance of precipitation in December

Any precipitation

Santa Catarina gets around 26 mm of rain and snow over 4.8 wet days in December, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 16% and peaks near 17% on the wettest days, and about 0 day brings snow.

0%10%20%30%151015202531
Rain chance (%)
115
215
315
415
515
615
715
815
915
1015
1116
1216
1316
1416
1516
1616
1716
1816
1916
2016
2116
2216
2316
2416
2516
2616
2716
2816
2916
3016
3117

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 89% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
182162
284151
384151
484151
584151
685141
785141
885141
986140
1087130
1187130
1288120
1388120
1489110
1589110
1690100
1790100
189190
199190
209190
219280
229280
239370
249370
259460
269460
279550
289550
299640
309640
319640

Wind in December

Winds average 6 km/h in December.

Across December, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 30 min at the start of December to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 7:16 AM to 7:32 AM, and sunset from 5:47 PM to 5:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.57:165:47
210.57:175:47
310.57:185:47
410.57:185:47
510.57:195:47
610.57:205:47
710.57:205:48
810.47:215:48
910.47:225:48
1010.47:225:48
1110.47:235:49
1210.47:235:49
1310.47:245:49
1410.47:255:49
1510.47:255:50
1610.47:265:50
1710.47:265:51
1810.47:275:51
1910.47:275:51
2010.47:285:52
2110.47:285:52
2210.47:295:53
2310.47:295:53
2410.47:305:54
2510.47:305:54
2610.47:315:55
2710.47:315:55
2810.47:315:56
2910.47:325:56
3010.47:325:57
3110.47:325:58

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.8 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.8 kWh/m² to a high of 6.81 kWh/m² in June across the year — December's 3.8 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
33.9Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.8Moderate
103.8Moderate
113.8Moderate
123.8Moderate
133.8Moderate
143.8Moderate
153.8Moderate
163.8Moderate
173.8Moderate
183.8Moderate
193.8Moderate
203.8Moderate
213.8Moderate
223.8Moderate
233.8Moderate
243.8Moderate
253.8Moderate
263.8Moderate
273.8Moderate
283.8Moderate
293.8Moderate
303.8Moderate
313.8Moderate
Planning a trip in December

Is December a good time to visit Santa Catarina?

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

7.0
Sightseeing
6th-best month of the year
2.8
Beach & pool
11th-best month of the year

December is one of the better times to visit Santa Catarina for general sightseeing.

What to pack for Santa Catarina in December

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

In December, Santa Catarina sees daytime highs around 19°C and nights near 8°C. Little to plan around — just the basics. About 5 days see rain.

UV index in Santa Catarina in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santa Catarina peaks around June 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJun 17UV 12Dec 18UV 5
UV index (midday)Level
Jan6High
Feb8Very high
Mar10Very high
Apr12Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep11Extreme
Oct8Very high
Nov6High
Dec5High

Air quality in Santa Catarina 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 Santa Catarina is worst in December — around 24 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateDec 1724 µg/m³Aug 1518 µg/m³
PM2.5 (µg/m³)Level
Jan23Moderate
Feb21Moderate
Mar24Moderate
Apr21Moderate
May22Moderate
Jun20Moderate
Jul19Moderate
Aug18Moderate
Sep20Moderate
Oct20Moderate
Nov22Moderate
Dec24Moderate
Location & terrain

Where is Santa Catarina?

Santa Catarina sits at 25.7°N, 100.5°W, 675 m above sea level, in Mexico. The nearest listed city is San Pedro Garza García, 6.0 km away.

Topography around Santa Catarina

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

Within 3 km, the terrain around Santa Catarina has large variations in elevation — a maximum elevation change of 949 m around an average of 751 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,177 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,485 m.

The land around Santa Catarina is covered by artificial surfaces (68%) and shrubs (25%) within 3 km, shrubs (47%), artificial surfaces (27%) and trees (23%) within 16 km, and shrubs (58%) and trees (27%) within 80 km.

3 km
949 m
16 km
2,177 m
80 km
3,485 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: San Pedro Garza García 6.0 km · Mitras Poniente 12 km · Parque Industrial Ciudad Mitras 13 km · Monterrey 14 km · San Nicolás de los Garza 17 km · García 19 km · Ciudad General Escobedo 20 km · Guadalupe 20 km

Mexico travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
120 / 127 V · 60 Hz
Prices
≈ 54% of US
price level, 2025
GDP per capita
$13,889
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
43%
of population, 2024
Homicide rate
24.9
per 100k, 2023
Road deaths
12.8
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 440
Religion
Catholic 78%no religion 11%other Evangelical Churches 8%Jehovah Witness 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 Catarina (25.6732°, -100.4581°, elevation 675 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).