San Juan Nepomuceno weather in December

In December, San Juan Nepomuceno sees average daytime highs of 32°C and overnight lows near 24°C, with 73 mm of rain across 13.1 wet days and about 11.4 hours of daylight. It is the 7th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 33% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 30 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 Nepomuceno's 3rd-clearest and 7th-windiest month. For the whole year in context, see San Juan Nepomuceno's year-round climate.

Daytime high
32°
7th warmest
Overnight low
24°
2nd coldest
Rainfall
73 mm
13.1 wet days
Daylight
11 h 24 min
6:14 AM – 5:39 PM
Cloud cover
57%
3rd clearest
Wind
5 km/h
7th windiest
Solar energy
4.74 kWh/m²
Travel score
3.8
out of 10

San Juan Nepomuceno is 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 32°C through the month.

A typical December day in San Juan Nepomuceno reaches about 32°C in the afternoon and slips back to 24°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 35°C. Set against its neighbours, December runs about 1°C warmer than November and about 2°C cooler than January.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13124
23124
33124
43124
53124
63124
73224
83224
93224
103224
113224
123224
133224
143224
153224
163224
173224
183224
193224
203224
213224
223224
233224
243224
253224
263224
273324
283324
293324
303324
313324

How December really feels in San Juan Nepomuceno

Once humidity and wind are folded in, December averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

San Juan Nepomuceno weather by month

How December compares with the rest of the year at a glance. December is the 7th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan34° / 24°194.611.53.7
Feb35° / 24°235.511.72.8
Mar34° / 25°5812.211.92.6
Apr33° / 25°15023.512.22.3
May32° / 25°24328.112.42.3
Jun32° / 25°17324.112.62.6
Jul32° / 25°14123.612.52.5
Aug32° / 25°18526.712.32.3
Sep31° / 24°21827.212.12.4
Oct31° / 24°25228.411.82.6
Nov31° / 24°1742411.53.0
Dec32° / 24°7313.111.43.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% 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 49%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23466
33664
43664
53664
63763
73862
83862
93961
104060
114258
124456
134555
144753
154951
165050
175248
185446
195644
205842
216040
226139
236337
246436
256535
266634
276832
286931
296931
307030
317129

Chance of precipitation in December

Any precipitation

San Juan Nepomuceno gets around 73 mm of rain over 13.1 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 43% and peaks near 63% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
163
261
360
459
558
657
755
854
953
1051
1150
1249
1347
1446
1544
1642
1741
1839
1938
2036
2135
2233
2332
2431
2529
2628
2727
2826
2925
3025
3124

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 63% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
104951
204951
305050
405149
505149
605248
705347
805545
915544
1015643
1115841
1215940
1316138
1416237
1516435
1616633
1726632
1826830
1926929
2036928
2137126
2247125
2357124
2457322
2567321
2677320
2787319
2897417
29107416
30117415
31117613

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
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 30 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 shrink by about 6 minutes over December. Sunrise moves from 6:06 AM to 6:21 AM, and sunset from 5:34 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:065:34
211.56:075:34
311.56:075:34
411.46:085:35
511.46:085:35
611.46:095:35
711.46:095:36
811.46:105:36
911.46:105:36
1011.46:115:37
1111.46:115:37
1211.46:125:38
1311.46:125:38
1411.46:135:38
1511.46:135:39
1611.46:145:39
1711.46:145:40
1811.46:155:40
1911.46:155:40
2011.46:165:41
2111.46:165:41
2211.46:175:42
2311.46:175:42
2411.46:185:43
2511.46:185:43
2611.46:195:44
2711.46:195:44
2811.46:195:45
2911.46:205:45
3011.46:205:46
3111.46:215:46

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.74 kWh/m².

For context, solar energy here swings from a low near 4.24 kWh/m² to a high of 5.67 kWh/m² in February across the year — December's 4.74 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.9Bright
234.9Bright
244.9Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in December

Is December a good time to visit San Juan Nepomuceno?

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

3.8
Sightseeing
1st-best month of the year
6.0
Beach & pool
3rd-best month of the year

December is a weaker month for outdoor sightseeing in San Juan Nepomuceno. The water and warmth also suit a beach or pool day.

What to pack for San Juan Nepomuceno in December

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

In December, San Juan Nepomuceno sees daytime highs around 32°C and nights near 24°C. Pack light clothes. Worth having: rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

Sea temperature near San Juan Nepomuceno in December

The nearest coast averages about 29°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 60 km away) is warmest in July at about 30°C and coldest in March near 28°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb28Tropical
Mar28Warm
Apr28Tropical
May29Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in San Juan Nepomuceno in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 9 (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 Nepomuceno peaks around June 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highJun 11UV 13Dec 12UV 9
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar12Extreme
Apr12Extreme
May12Extreme
Jun13Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov10Very high
Dec9Very high

Air quality in San Juan Nepomuceno 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 Nepomuceno is worst in March — around 48 µg/m³ PM2.5 (poor), about 3.2× the cleanest month (November, 15 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 1745 µg/m³Nov 1915 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb26Moderate
Mar48Poor
Apr30Moderate
May26Moderate
Jun24Moderate
Jul26Moderate
Aug21Moderate
Sep17Moderate
Oct16Moderate
Nov15Moderate
Dec15Moderate
Location & terrain

Where is San Juan Nepomuceno?

San Juan Nepomuceno sits at 10.0°N, 75.1°W, 172 m above sea level, in Colombia. The nearest listed city is San Jacinto, 14 km away.

Topography around San Juan Nepomuceno

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

Within 3 km, the terrain around San Juan Nepomuceno has significant variations in elevation — a maximum elevation change of 294 m around an average of 228 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 786 m; within 80 km, large variations in elevation — a maximum elevation change of 811 m.

The land around San Juan Nepomuceno is covered by trees (47%) and grassland (46%) within 3 km, trees (72%) and grassland (28%) within 16 km, and grassland (53%) and trees (28%) within 80 km.

3 km
294 m
16 km
786 m
80 km
811 m
treesgrasslandartificial surfaceswaterwetlandmangroves
December weather nearby: San Jacinto 14 km · San Pablo 23 km · María la Baja 24 km · El Carmen de Bolívar 26 km · Mahates 33 km · Plato 37 km · Santa Lucía 44 km · Arjona 44 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 Nepomuceno (9.9516°, -75.082°, elevation 172 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).