San Martín weather in May

In May, San Martín sees average daytime highs of 28°C and overnight lows near 20°C, with 351 mm of rain across 27.3 wet days and about 12.2 hours of daylight. It is the 9th-warmest and 3rd-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 1% of the time in May, and the air most often feels muggy.

Daylight stretches from about 12 h 06 min at the start of May to 12 h 12 min by month's end. Set against the rest of the year, May is San Martín's 12th-clearest and 9th-windiest month. For the whole year in context, see San Martín's year-round climate.

Daytime high
28°
9th warmest
Overnight low
20°
9th coldest
Rainfall
351 mm
27.3 wet days
Daylight
12 h 12 min
5:46 AM – 5:56 PM
Cloud cover
88%
12th clearest
Wind
3 km/h
9th windiest
Solar energy
4.46 kWh/m²
Travel score
3.7
out of 10

San Martín is village in Meta, Colombia.

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

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

A typical May day in San Martín 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 25°C and 30°C. Set against its neighbours, May runs about 1°C cooler than April and about 1°C warmer than June.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12820
22820
32820
42820
52820
62820
72820
82820
92820
102820
112820
122820
132820
142820
152820
162820
172820
182820
192720
202720
212720
222720
232720
242720
252720
262720
272720
282720
292720
302720
312720

San Martín weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 3rd-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 5% of May, with mostly cloudy or overcast conditions the remaining 95%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1595
2595
3595
4595
5595
6595
7595
8595
9595
10595
11595
12595
13595
14595
15595
16694
17694
18694
19694
20595
21595
22595
23595
24595
25595
26595
27595
28595
29694
30694
31694

Chance of precipitation in May

Any precipitation

San Martín gets around 351 mm of rain over 27.3 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 88% and peaks near 89% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
185
286
386
486
587
687
787
888
988
1088
1189
1289
1389
1489
1588
1688
1788
1888
1988
2088
2188
2288
2388
2488
2588
2688
2788
2889
2989
3089
3189

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the muggy band about 87% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
14888
24888
34888
43889
53889
63889
738710
838710
938710
1038611
1138611
1238611
1338611
1438611
1538611
1638611
1748511
1848511
1948610
2048610
2148610
224879
234879
244888
254888
264897
274897
284906
294906
304915
314924

Wind in May

Winds average 3 km/h in May.

Across May, 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 May

DaylightNight

Daylight runs from about 12 h 06 min at the start of May to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over May. Sunrise moves from 5:48 AM to 5:46 AM, and sunset from 5:56 PM to 5:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:485:56
212.15:485:56
312.15:485:56
412.15:485:56
512.15:475:56
612.15:475:56
712.15:475:56
812.15:475:56
912.15:475:56
1012.25:475:56
1112.25:465:56
1212.25:465:56
1312.25:465:56
1412.25:465:56
1512.25:465:56
1612.25:465:56
1712.25:465:56
1812.25:465:56
1912.25:465:56
2012.25:465:56
2112.25:465:57
2212.25:465:57
2312.25:465:57
2412.25:465:57
2512.25:465:57
2612.25:465:57
2712.25:465:57
2812.25:465:58
2912.25:465:58
3012.25:465:58
3112.25:465:58

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.46 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 — May's 4.46 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in May

Hazard calendar for San Martín

In seasonPeak

In May, San Martín sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

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 May a good time to visit San Martín?

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

3.7
Sightseeing
10th-best month of the year
3.9
Beach & pool
10th-best month of the year

May is a weaker month for outdoor sightseeing in San Martín.

What to pack for San Martín in May

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

In May, San Martín sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

UV index in San Martín in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 12 (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 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 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
May 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).