San Lorenzo weather in December

In December, San Lorenzo sees average daytime highs of 22°C and overnight lows near 15°C, with 388 mm of rain across 29.6 wet days and about 11.9 hours of daylight. It is the 11th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 1% of the time in December, and the air most often feels comfortable.

Daylight stretches from about 11 h 54 min at the start of December to 11 h 54 min by month's end. Set against the rest of the year, December is San Lorenzo's 6th-clearest and 5th-windiest month. For the whole year in context, see San Lorenzo's year-round climate.

Daytime high
22°
11th warmest
Overnight low
15°
7th coldest
Rainfall
388 mm
29.6 wet days
Daylight
11 h 54 min
6:08 AM – 6:02 PM
Cloud cover
84%
6th clearest
Wind
3 km/h
5th windiest
Solar energy
4.65 kWh/m²
Travel score
3.6
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 22°C through the month.

A typical December day in San Lorenzo reaches about 22°C in the afternoon and slips back to 15°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 24°C. Set against its neighbours, December runs on par with November and on par with January.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12215
22215
32215
42215
52215
62215
72215
82215
92215
102215
112215
122215
132215
142215
152215
162215
172215
182215
192215
202215
212215
222215
232215
242215
252215
262215
272215
282215
292215
302215
312215

San Lorenzo weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan22° / 15°34229.211.93.7
Feb23° / 15°34326.3123.6
Mar23° / 15°40129.6123.6
Apr23° / 15°44129.3123.5
May23° / 15°39229.112.13.6
Jun23° / 15°27024.312.14.3
Jul24° / 15°18120.112.15.2
Aug24° / 15°14718.4125.4
Sep24° / 15°25824.5124.3
Oct23° / 15°38129.6123.6
Nov22° / 15°39328.911.93.4
Dec22° / 15°38829.611.93.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 90%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1496
2496
3595
4595
5595
6595
7694
8793
9892
10892
11892
12991
13991
14991
151090
161090
171189
181189
191288
201288
211288
221387
231387
241486
251585
261585
271585
281684
291684
301684
311684

Chance of precipitation in December

Any precipitation

San Lorenzo gets around 388 mm of rain over 29.6 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 95% and peaks near 97% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
197
297
397
497
597
697
797
897
997
1097
1197
1297
1397
1497
1597
1696
1796
1896
1995
2095
2195
2294
2394
2494
2593
2693
2793
2892
2992
3092
3192

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the comfortable band about 50% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
114653
214653
314653
414653
504654
604654
704753
804753
904753
1004852
1104852
1204951
1304951
1404951
1505050
1605050
1705149
1805149
1905248
2005248
2105347
2205347
2305446
2415346
2515445
2615544
2715544
2815643
2915643
3015643
3115643

Wind in December

Winds average 3 km/h in December.

Across December, daily wind ranges from about 3 km/h on the calmest days to 3 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
13calm
23calm
33calm
43calm
53calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
153calm
163calm
173calm
183calm
193calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm
313calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 54 min at the start of December to 11 h 54 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 6:01 AM to 6:15 AM, and sunset from 5:56 PM to 6:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:015:56
211.96:015:57
311.96:025:57
411.96:025:57
511.96:035:58
611.96:035:58
711.96:045:59
811.96:045:59
911.96:045:59
1011.96:056:00
1111.96:056:00
1211.96:066:01
1311.96:066:01
1411.96:076:02
1511.96:076:02
1611.96:086:02
1711.96:086:03
1811.96:096:03
1911.96:096:04
2011.96:096:04
2111.96:106:05
2211.96:106:05
2311.96:116:06
2411.96:116:06
2511.96:126:07
2611.96:126:07
2711.96:136:08
2811.96:136:08
2911.96:146:09
3011.96:146:09
3111.96:156:09

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.65 kWh/m².

For context, solar energy here swings from a low near 4.51 kWh/m² to a high of 5.59 kWh/m² in September across the year — December's 4.65 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.9Bright
Planning a trip in December

Is December a good time to visit San Lorenzo?

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

3.6
Sightseeing
6th-best month of the year
2.5
Beach & pool
11th-best month of the year

December is a weaker month for outdoor sightseeing in San Lorenzo.

What to pack for San Lorenzo in December

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

In December, San Lorenzo sees daytime highs around 22°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 30 days see rain.

rain gearlight clothessun protection

UV index in San Lorenzo 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 San Lorenzo peaks around February 19 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 24 at about 12 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 19UV 16Jul 24UV 12
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar16Extreme
Apr14Extreme
May15Extreme
Jun13Extreme
Jul12Extreme
Aug12Extreme
Sep14Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme

Air quality in San Lorenzo 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 Lorenzo is worst in March — around 18 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (July, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 1218 µg/m³Jul 1111 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb18Moderate
Mar18Moderate
Apr16Moderate
May13Moderate
Jun11Good
Jul11Good
Aug14Moderate
Sep17Moderate
Oct15Moderate
Nov14Moderate
Dec14Moderate
Location & terrain

Where is San Lorenzo?

San Lorenzo sits at 1.5°N, 77.2°W, 2,074 m above sea level, in Colombia. The nearest listed city is La Unión, 15 km away.

Topography around San Lorenzo

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

Within 3 km, the terrain around San Lorenzo has very significant variations in elevation — a maximum elevation change of 1,424 m around an average of 2,225 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,258 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,121 m.

The land around San Lorenzo is covered by trees (63%) and grassland (35%) within 3 km, trees (51%) and grassland (48%) within 16 km, and trees (76%) and grassland (23%) within 80 km.

3 km
1,424 m
16 km
2,258 m
80 km
4,121 m
treesshrubsgrasslandartificial surfaces
December weather nearby: La Unión 15 km · Buesaco 15 km · Providencia 29 km · Pasto 33 km · Samaniego 46 km · Balboa 60 km · Túquerres 64 km · Patía 65 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 Lorenzo (1.5029°, -77.2154°, elevation 2,074 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).