San Marcos weather in March

In March, San Marcos sees average daytime highs of 35°C and overnight lows near 26°C, with 80 mm of rain across 15.2 wet days and about 11.9 hours of daylight. It is the 2nd-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 35°C through the month. The sky is clear or mostly clear about 23% of the time in March, and the air most often feels oppressive.

Daylight stretches from about 11 h 48 min at the start of March to 12 h 06 min by month's end. Set against the rest of the year, March is San Marcos's 3rd-clearest and 2nd-windiest month. For the whole year in context, see San Marcos's year-round climate.

Daytime high
35°
2nd warmest
Overnight low
26°
12th coldest
Rainfall
80 mm
15.2 wet days
Daylight
11 h 54 min
6:12 AM – 6:08 PM
Cloud cover
65%
3rd clearest
Wind
7 km/h
2nd windiest
Solar energy
5.7 kWh/m²
Travel score
2.3
out of 10

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 35°C through the month.

A typical March day in San Marcos reaches about 35°C in the afternoon and slips back to 26°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 38°C. Set against its neighbours, March runs on par with February and about 2°C warmer than April.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13526
23526
33526
43526
53526
63526
73526
83526
93526
103526
113526
123526
133526
143526
153526
163526
173526
183526
193525
203425
213425
223425
233425
243425
253425
263425
273425
283425
293425
303425
313425

How March really feels in San Marcos

Once humidity and wind are folded in, March 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
31 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

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

San Marcos weather by month

How March compares with the rest of the year at a glance. March is the 2nd-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 24°317.811.63.8
Feb35° / 25°316.911.72.9
Mar35° / 26°8015.211.92.3
Apr33° / 25°19825.712.22.1
May32° / 25°31029.312.42.1
Jun32° / 25°26027.112.52.2
Jul32° / 25°24427.312.52.3
Aug32° / 24°25828.312.32.2
Sep32° / 24°26528.912.12.2
Oct31° / 24°27329.811.82.3
Nov31° / 24°19627.211.62.5
Dec32° / 24°9618.811.53.3

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 18% of March, with mostly cloudy or overcast conditions the remaining 58%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25545
35446
45347
55347
65248
75050
84951
94852
104753
114753
124456
134456
144357
154159
164159
173961
183961
193763
203763
213664
223565
233565
243466
253367
263367
273367
283070
293070
303070
312872

Chance of precipitation in March

Any precipitation

San Marcos gets around 80 mm of rain over 15.2 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 50% and peaks near 68% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
134
235
336
437
538
639
740
840
941
1042
1144
1245
1346
1447
1548
1649
1750
1851
1952
2054
2155
2256
2357
2459
2560
2661
2762
2863
2965
3066
3168

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the oppressive band about 68% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
177914
268014
367915
458015
557916
657916
747917
847917
947818
1037918
1137819
1237720
1327721
1427622
1527523
1627424
1727226
1827028
1926830
2026731
2136433
2236235
2336037
2435839
2535641
2635443
2735245
2835047
2934849
3024751
3124553

Wind in March

Winds average 7 km/h in March.

Across March, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 h 48 min at the start of March to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over March. Sunrise moves from 6:19 AM to 6:04 AM, and sunset from 6:08 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:196:08
211.86:196:08
311.86:186:08
411.86:186:09
511.96:176:09
611.96:176:09
711.96:166:09
811.96:166:09
911.96:166:09
1011.96:156:09
1111.96:156:09
1211.96:146:09
1311.96:146:09
1411.96:136:08
1511.96:126:08
1611.96:126:08
1711.96:116:08
1812.06:116:08
1912.06:106:08
2012.06:106:08
2112.06:096:08
2212.06:096:08
2312.06:086:08
2412.06:086:08
2512.06:076:08
2612.06:066:08
2712.06:066:08
2812.06:056:08
2912.06:056:08
3012.16:046:07
3112.16:046:07

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 5.7 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.41 kWh/m² to a high of 5.7 kWh/m² in March across the year — March's 5.7 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in March

Is March a good time to visit San Marcos?

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

2.3
Sightseeing
5th-best month of the year
4.9
Beach & pool
4th-best month of the year

March is a weaker month for outdoor sightseeing in San Marcos.

What to pack for San Marcos in March

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

In March, San Marcos sees daytime highs around 35°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in San Marcos in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March 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 Marcos peaks around June 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 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 highJun 15UV 13Dec 13UV 10
UV index (midday)Level
Jan11Extreme
Feb12Extreme
Mar12Extreme
Apr12Extreme
May12Extreme
Jun13Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct12Extreme
Nov10Very high
Dec10Very high

Air quality in San Marcos in March

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.

Air quality in San Marcos is worst in March — around 34 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (November, 12 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1933 µg/m³Nov 1812 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb21Moderate
Mar34Moderate
Apr27Moderate
May22Moderate
Jun20Moderate
Jul20Moderate
Aug17Moderate
Sep14Moderate
Oct13Moderate
Nov12Moderate
Dec13Moderate
Location & terrain

Where is San Marcos?

San Marcos sits at 8.7°N, 75.1°W, 25 m above sea level, in Colombia. The nearest listed city is San Benito Abad, 32 km away.

Topography around San Marcos

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

Within 3 km, the terrain around San Marcos has only modest variations in elevation — a maximum elevation change of 18 m around an average of 22 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 73 m; within 80 km, large variations in elevation — a maximum elevation change of 1,004 m.

The land around San Marcos is covered by grassland (57%) within 3 km, grassland (69%) within 16 km, and grassland (68%) within 80 km.

3 km
18 m
16 km
73 m
80 km
1,004 m
treesgrasslandcroplandartificial surfaceswaterwetland
March weather nearby: San Benito Abad 32 km · Ayapel 38 km · Sahagún 47 km · Sucre 48 km · Galeras 56 km · Planeta Rica 57 km · Chinú 58 km · Ciénaga de Oro 59 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 Marcos (8.6597°, -75.1281°, elevation 25 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).