San Pedro weather in December

In December, San Pedro sees average daytime highs of 22°C and overnight lows near 9°C, with 7 mm of rain across 1.5 wet days and about 10.4 hours of daylight. It is the 11th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 22°C by the end. The sky is clear or mostly clear about 57% 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 San Pedro's 9th-clearest and 12th-windiest month. For the whole year in context, see San Pedro's year-round climate.

Daytime high
22°
11th warmest
Overnight low
2nd coldest
Rainfall
7 mm
1.5 wet days
Daylight
10 h 24 min
7:36 AM – 6:00 PM
Cloud cover
38%
9th clearest
Wind
9 km/h
12th windiest
Solar energy
4.17 kWh/m²
Travel score
8.4
out of 10

San Pedro is municipal seat of San Pedro, State of Coahuila, Mexico.

Density
3,047/km²
people per km²
Founded
1870

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 24°C in the first days to 22°C by the end.

A typical December day in San Pedro reaches about 22°C in the afternoon and slips back to 9°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 27°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)
12411
22410
32410
42410
52310
62310
72310
82310
92310
102310
112310
12239
13239
14229
15229
16229
17229
18229
19229
20229
21229
22229
23228
24228
25228
26228
27228
28228
29228
30228
31228

How December really feels in San Pedro

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.

San Pedro weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan22° / 91.510.68.4
Feb26° / 11°5111.18.5
Mar29° / 14°81.411.87.1
Apr33° / 18°30.912.64.7
May36° / 21°71.913.22.9
Jun36° / 23°14313.62.4
Jul35° / 24°244.413.42.9
Aug35° / 23°183.312.93.2
Sep33° / 21°285.112.24.3
Oct30° / 18°152.211.46.2
Nov26° / 13°91.610.78.6
Dec22° / 71.510.48.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 11% of December, with mostly cloudy or overcast conditions the remaining 33%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17129
27129
36931
46931
56832
66733
76733
86634
96634
106634
116535
126634
136634
146634
156634
166733
176733
186733
196733
206733
216733
226832
236832
246832
256832
266733
276733
286832
296832
306832
316832

Chance of precipitation in December

Any precipitation

San Pedro gets around 7 mm of rain over 1.5 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 5% and peaks near 5% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
14
24
34
44
54
64
75
85
95
105
115
125
135
145
155
165
175
185
195
205
215
225
235
245
255
265
275
285
295
305
315

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
16991
17991
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in December

Winds average 9 km/h in December, the calmest month.

Across December, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 7:26 AM to 7:43 AM, and sunset from 5:57 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.57:265:57
210.57:275:57
310.57:285:57
410.57:295:57
510.57:295:57
610.57:305:57
710.57:315:58
810.47:315:58
910.47:325:58
1010.47:335:58
1110.47:335:59
1210.47:345:59
1310.47:345:59
1410.47:355:59
1510.47:366:00
1610.47:366:00
1710.47:376:00
1810.47:376:01
1910.47:386:01
2010.47:386:02
2110.47:396:02
2210.47:396:03
2310.47:406:03
2410.47:406:04
2510.47:416:04
2610.47:416:05
2710.47:416:05
2810.47:426:06
2910.47:426:06
3010.47:426:07
3110.47:436:07

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.17 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.17 kWh/m² to a high of 7.96 kWh/m² in May across the year — December's 4.17 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.2Bright
54.2Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.2Bright
234.2Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.2Bright
314.2Bright
Planning a trip in December

Is December a good time to visit San Pedro?

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

8.4
Sightseeing
3rd-best month of the year
6.2
Beach & pool
10th-best month of the year

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

What to pack for San Pedro in December

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

In December, San Pedro sees daytime highs around 22°C and nights near 9°C. Worth packing: light clothes.

light clothes

UV index in San Pedro in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Pedro peaks around July 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJul 11UV 13Dec 19UV 6
UV index (midday)Level
Jan6High
Feb9Very high
Mar11Extreme
Apr12Extreme
May13Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct9Very high
Nov7High
Dec6High
Location & terrain

Where is San Pedro?

San Pedro sits at 25.8°N, 103.0°W, 1,101 m above sea level, in Mexico. The nearest listed city is Francisco I. Madero, 29 km away.

Guadalupe Victoria

Topography around San Pedro

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

Within 3 km, the terrain around San Pedro has only modest variations in elevation — a maximum elevation change of 12 m around an average of 1,099 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 383 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,276 m.

The land around San Pedro is covered by shrubs (39%) and artificial surfaces (26%) within 3 km, shrubs (42%) and bare terrain (29%) within 16 km, and shrubs (57%) and bare terrain (32%) within 80 km.

3 km
12 m
16 km
383 m
80 km
2,276 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Francisco I. Madero 29 km · Matamoros 35 km · Torreón 50 km · Gómez Palacio 56 km · Lerdo 59 km · Parras de la Fuente 88 km · Juan Aldama 168 km · Guadalupe Victoria 185 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 San Pedro (25.756°, -102.9839°, elevation 1,101 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).