San Juan del Cesar weather in May

In May, San Juan del Cesar sees average daytime highs of 29°C and overnight lows near 21°C, with 327 mm of rain across 28.6 wet days and about 12.5 hours of daylight. It is the 5th-warmest and 1st-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 2% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 24 min at the start of May to 12 h 36 min by month's end. Set against the rest of the year, May is San Juan del Cesar's 12th-clearest and 8th-windiest month. For the whole year in context, see San Juan del Cesar's year-round climate.

Daytime high
29°
5th warmest
Overnight low
21°
12th coldest
Rainfall
327 mm
28.6 wet days
Daylight
12 h 30 min
5:33 AM – 6:03 PM
Cloud cover
92%
12th clearest
Wind
4 km/h
8th windiest
Solar energy
4.55 kWh/m²
Travel score
3.1
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

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

A typical May day in San Juan del Cesar reaches about 29°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 31°C. Set against its neighbours, May runs on par with April and on par with June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12821
22821
32821
42821
52821
62821
72821
82821
92821
102821
112821
122821
132821
142921
152921
162921
172921
182921
192921
202921
212921
222921
232921
242921
252921
262921
272921
282921
292921
302921
312921

San Juan del Cesar weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 1st-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 3% of May, with mostly cloudy or overcast conditions the remaining 95%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1496
2496
3496
4397
5397
6397
7397
8397
9397
10397
11496
12496
13496
14496
15496
16496
17496
18496
19496
20496
21595
22595
23595
24694
25694
26892
27892
28991
291090
301189
311288

Chance of precipitation in May

Any precipitation

San Juan del Cesar gets around 327 mm of rain over 28.6 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 91% and peaks near 92% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
190
290
390
491
591
691
791
892
992
1092
1192
1292
1392
1492
1592
1692
1792
1892
1992
2092
2192
2292
2392
2492
2592
2692
2792
2891
2991
3090
3189

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 62% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
115049
204951
304753
404654
504456
604357
704159
804060
903862
1003763
1103664
1203565
1303466
1403466
1503367
1603367
1703367
1803466
1903466
2003466
2103565
2203664
2303664
2403763
2503763
2603763
2703763
2803763
2903862
3003862
3103862

Wind in May

Winds average 4 km/h in May.

Across May, daily wind ranges from about 3 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
193calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm
313calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 24 min at the start of May to 12 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over May. Sunrise moves from 5:38 AM to 5:32 AM, and sunset from 6:00 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:386:00
212.45:386:01
312.45:376:01
412.45:376:01
512.45:366:01
612.45:366:01
712.45:366:01
812.45:356:02
912.45:356:02
1012.45:356:02
1112.55:356:02
1212.55:346:02
1312.55:346:02
1412.55:346:03
1512.55:346:03
1612.55:336:03
1712.55:336:03
1812.55:336:03
1912.55:336:04
2012.55:336:04
2112.55:336:04
2212.55:336:04
2312.55:326:05
2412.55:326:05
2512.55:326:05
2612.65:326:05
2712.65:326:06
2812.65:326:06
2912.65:326:06
3012.65:326:07
3112.65:326:07

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.55 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 — May's 4.55 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.7Bright
214.7Bright
224.7Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.9Bright
284.9Bright
294.9Bright
305.0Bright
315.0Bright
Planning a trip in May

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

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

3.1
Sightseeing
10th-best month of the year
3.9
Beach & pool
9th-best month of the year

May is a weaker month for outdoor sightseeing in San Juan del Cesar.

What to pack for San Juan del Cesar in May

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

In May, San Juan del Cesar sees daytime highs around 29°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 29 days see rain.

light clothesrain gearsun protection

Sea temperature near San Juan del Cesar in May

The nearest coast averages about 27°C in May — 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 May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 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 May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May 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
May 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).