San Martín weather in December

In December, San Martín sees average daytime highs of 29°C and overnight lows near 20°C, with 62 mm of rain across 11.4 wet days and about 11.8 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 16% of the time in December, and the air most often feels muggy.

Daylight stretches from about 11 h 48 min at the start of December to 11 h 48 min by month's end. Set against the rest of the year, December is San Martín's 2nd-clearest and 3rd-windiest month. For the whole year in context, see San Martín's year-round climate.

Daytime high
29°
4th warmest
Overnight low
20°
5th coldest
Rainfall
62 mm
11.4 wet days
Daylight
11 h 48 min
5:57 AM – 5:45 PM
Cloud cover
67%
2nd clearest
Wind
5 km/h
3rd windiest
Solar energy
5.31 kWh/m²
Travel score
5.1
out of 10

San Martín is village in Meta, Colombia.

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical December day in San Martín reaches about 29°C in the afternoon and slips back to 20°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 31°C. Set against its neighbours, December runs on par with November and about 1°C cooler than January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12920
22920
32920
42920
52920
62920
72920
82920
92920
102920
112920
122920
132920
142920
152920
162920
172920
182920
192919
202919
212919
222919
232919
242919
252919
262919
272919
282919
292919
303019
313019

San Martín weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 20°367.311.85.2
Feb31° / 20°578.911.94.6
Mar30° / 20°15115.8124.2
Apr28° / 20°27624.312.13.6
May28° / 20°35127.312.23.7
Jun27° / 19°35627.112.23.7
Jul26° / 19°36827.512.23.9
Aug27° / 19°2362512.14.1
Sep28° / 19°17322.8123.9
Oct29° / 20°16822.311.93.8
Nov29° / 20°16019.511.84.2
Dec29° / 20°6211.411.85.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 18% of December, with mostly cloudy or overcast conditions the remaining 66%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12476
22476
32476
42575
52674
62872
72872
82872
92872
103169
113169
123169
133367
143367
153367
163466
173466
183466
193466
203565
213664
223862
234060
244060
254159
264258
274258
284258
294357
304456
314555

Chance of precipitation in December

Any precipitation

San Martín gets around 62 mm of rain over 11.4 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 37% and peaks near 50% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
150
249
347
446
545
643
742
841
939
1038
1137
1236
1336
1436
1535
1635
1736
1836
1936
2036
2135
2235
2334
2433
2532
2632
2731
2830
2930
3029
3129

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy band about 51% of days. Sticky, muggy-or-worse air turns up on roughly 51% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
10121771
20123751
30124741
40125731
50227701
60228691
70230671
80231661
90333640
100334630
110336610
120438580
130439570
140541540
150542530
160643510
170744480
181845470
191945450
2011046430
2111246410
2211347390
2311547370
2421647350
2521846330
2632046320
2732145300
2832245290
2942344280
3042444280
3152543270

Wind in December

Winds average 5 km/h in December.

Across December, daily wind ranges from about 4 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
14calm
24calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 48 min at the start of December to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 5:51 AM to 6:04 AM, and sunset from 5:39 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:515:39
211.85:515:39
311.85:515:39
411.85:525:40
511.85:525:40
611.85:535:40
711.85:535:41
811.85:545:41
911.85:545:42
1011.85:555:42
1111.85:555:42
1211.85:555:43
1311.85:565:43
1411.85:565:44
1511.85:575:44
1611.85:575:45
1711.85:585:45
1811.85:585:45
1911.85:595:46
2011.85:595:46
2111.86:005:47
2211.86:005:47
2311.86:015:48
2411.86:015:48
2511.86:025:49
2611.86:025:49
2711.86:035:50
2811.86:035:50
2911.86:035:51
3011.86:045:51
3111.86:045:52

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.31 kWh/m².

For context, solar energy here swings from a low near 4.24 kWh/m² to a high of 5.82 kWh/m² in September across the year — December's 5.31 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in December

Hazard calendar for San Martín

In seasonPeak

None of San Martín's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

San Martín's rainy season runs April–October, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit San Martín?

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

5.1
Sightseeing
2nd-best month of the year
6.6
Beach & pool
2nd-best month of the year

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

What to pack for San Martín in December

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

In December, San Martín sees daytime highs around 29°C and nights near 20°C. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in San Martín in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Martín peaks around February 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 13UV 14Dec 13UV 11
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar13Extreme
Apr11Extreme
May12Extreme
Jun13Extreme
Jul12Extreme
Aug11Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec10Extreme

Air quality in San Martín 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 San Martín is worst in March — around 33 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (July, 16 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1932 µg/m³Jul 1817 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb23Moderate
Mar33Moderate
Apr27Moderate
May21Moderate
Jun19Moderate
Jul16Moderate
Aug18Moderate
Sep18Moderate
Oct19Moderate
Nov20Moderate
Dec17Moderate
Location & terrain

Where is San Martín?

San Martín sits at 3.7°N, 73.7°W, 425 m above sea level, in Colombia. The nearest listed city is Granada, 17 km away.

SibatéSilvania

Topography around San Martín

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

Within 3 km, the terrain around San Martín has only modest variations in elevation — a maximum elevation change of 70 m around an average of 420 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 429 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,026 m.

The land around San Martín is covered by grassland (68%) and trees (26%) within 3 km, grassland (63%) and trees (33%) within 16 km, and grassland (50%) and trees (48%) within 80 km.

3 km
70 m
16 km
429 m
80 km
4,026 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Granada 17 km · Acacías 33 km · Villavicencio 49 km · Restrepo 64 km · Puerto López 94 km · Fusagasugá 102 km · Sibaté 108 km · Silvania 110 km

Colombia travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type A / B
120 / 240 V · 60 Hz
Prices
≈ 38% of US
price level, 2025
GDP per capita
$8,562
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
74%
of population, 2024
Homicide rate
24.9
per 100k, 2023
Road deaths
15.4
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 480
Religion
Roman Catholic 64%Protestant 17%none 14%atheist 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 Martín (3.6964°, -73.6996°, elevation 425 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).