San Juan del Cesar weather in December

In December, San Juan del Cesar sees average daytime highs of 28°C and overnight lows near 20°C, with 121 mm of rain across 18.7 wet days and about 11.4 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 22% of the time in December, and the air most often feels muggy.

Daylight stretches from about 11 h 24 min at the start of December to 11 h 24 min by month's end. Set against the rest of the year, December is San Juan del Cesar's 3rd-clearest and 4th-windiest month. For the whole year in context, see San Juan del Cesar's year-round climate.

Daytime high
28°
12th warmest
Overnight low
20°
3rd coldest
Rainfall
121 mm
18.7 wet days
Daylight
11 h 24 min
6:07 AM – 5:29 PM
Cloud cover
63%
3rd clearest
Wind
5 km/h
4th windiest
Solar energy
4.62 kWh/m²
Travel score
5.1
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical December day in San Juan del Cesar reaches about 28°C in the afternoon and slips back to 20°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12820
22820
32820
42820
52820
62820
72820
82820
92820
102820
112820
122820
132820
142820
152820
162819
172819
182819
192819
202819
212819
222819
232819
242819
252819
262819
272819
282819
292819
302819
312819

San Juan del Cesar weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 19°6313.211.46.1
Feb28° / 19°6311.611.65.7
Mar28° / 20°14317.311.94.8
Apr28° / 21°27424.612.23.6
May29° / 21°32728.612.53.1
Jun29° / 21°1792512.63.3
Jul29° / 21°18526.912.63.2
Aug30° / 21°22929.412.42.8
Sep29° / 21°24829.312.12.8
Oct28° / 20°26929.411.83.2
Nov28° / 20°22225.211.53.9
Dec28° / 20°12118.711.45.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 22% of December, with mostly cloudy or overcast conditions the remaining 57%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
23070
33070
43070
53169
63169
73367
83367
93367
103565
113565
123664
133862
143961
154159
164159
174357
184654
194753
204852
215050
225248
235347
245446
255644
265743
275842
285842
295941
306040
316139

Chance of precipitation in December

Any precipitation

San Juan del Cesar gets around 121 mm of rain over 18.7 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 61% and peaks near 72% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
172
271
370
470
569
668
767
866
965
1065
1164
1263
1362
1462
1561
1660
1760
1859
1958
2058
2157
2256
2356
2455
2554
2654
2753
2852
2952
3051
3151

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 74% of days. Sticky, muggy-or-worse air turns up on roughly 84% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1067519
2077518
3087517
4087616
5097615
60107614
70107614
80117613
90127513
100127513
110137512
120147412
130147412
141157311
151157311
161167310
171167310
18116749
19117739
20117748
21118747
22119737
23120736
24120736
25121735
26122725
27123724
28124714
29125713
30126703
31127693

Wind in December

Winds average 5 km/h in December.

Across December, daily wind ranges from about 5 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
15calm
25calm
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 24 min at the start of December to 11 h 24 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 5:59 AM to 6:14 AM, and sunset from 5:24 PM to 5:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.45:595:24
211.46:005:24
311.46:005:25
411.46:015:25
511.46:015:25
611.46:025:26
711.46:025:26
811.46:035:26
911.46:035:27
1011.46:045:27
1111.46:045:27
1211.46:055:28
1311.46:055:28
1411.46:065:29
1511.46:065:29
1611.46:075:29
1711.46:075:30
1811.46:085:30
1911.46:085:31
2011.46:095:31
2111.46:095:32
2211.46:105:32
2311.46:105:33
2411.46:115:33
2511.46:115:33
2611.46:125:34
2711.46:125:34
2811.46:135:35
2911.46:135:35
3011.46:135:36
3111.46:145:36

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.62 kWh/m².

For context, solar energy here swings from a low near 4.41 kWh/m² to a high of 5.61 kWh/m² in August across the year — December's 4.62 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in December

Is December a good time to visit San Juan del Cesar?

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

5.1
Sightseeing
3rd-best month of the year
5.4
Beach & pool
4th-best month of the year

December is a reasonable time to visit San Juan del Cesar for sightseeing.

What to pack for San Juan del Cesar in December

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

In December, San Juan del Cesar sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

Sea temperature near San Juan del Cesar in December

The nearest coast averages about 27°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 68 km away) is warmest in October at about 29°C and coldest in February near 25°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb25Warm
Mar25Warm
Apr26Warm
May27Warm
Jun28Warm
Jul27Warm
Aug28Warm
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in San Juan del Cesar 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 Juan del Cesar peaks around April 11 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highApr 11UV 14Dec 12UV 10
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar14Extreme
Apr14Extreme
May13Extreme
Jun13Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov10Extreme
Dec10Very high

Air quality in San Juan del Cesar 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 Juan del Cesar is worst in March — around 34 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (December, 12 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1932 µg/m³Dec 1812 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb20Moderate
Mar34Moderate
Apr27Moderate
May26Moderate
Jun27Moderate
Jul25Moderate
Aug27Moderate
Sep18Moderate
Oct16Moderate
Nov13Moderate
Dec12Good
Location & terrain

Where is San Juan del Cesar?

San Juan del Cesar sits at 10.8°N, 73.0°W, 214 m above sea level, in Colombia. The nearest listed city is Villanueva, 18 km away.

Topography around San Juan del Cesar

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

Within 3 km, the terrain around San Juan del Cesar has only modest variations in elevation — a maximum elevation change of 105 m around an average of 214 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,124 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,722 m.

The land around San Juan del Cesar is covered by grassland (64%) within 3 km, grassland (49%) and trees (38%) within 16 km, and trees (65%) and grassland (22%) within 80 km.

3 km
105 m
16 km
1,124 m
80 km
5,722 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Villanueva 18 km · Fonseca 21 km · Barrancas 31 km · Hatonuevo 42 km · Valledupar 44 km · San Diego 52 km · Albania 62 km · Agustín Codazzi 86 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 Juan del Cesar (10.7711°, -73.0031°, elevation 214 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).