San Marcos weather in March

In March, San Marcos sees average daytime highs of 21°C and overnight lows near 11°C, with 64 mm of rain across 16.7 wet days and about 11.9 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 21°C through the month. The sky is clear or mostly clear about 43% of the time in March, and the air most often feels dry.

Daylight stretches from about 11 h 42 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 4th-clearest and 5th-windiest month. For the whole year in context, see San Marcos's year-round climate.

Daytime high
21°
2nd warmest
Overnight low
11°
4th coldest
Rainfall
64 mm
16.7 wet days
Daylight
11 h 54 min
6:20 AM – 6:14 PM
Cloud cover
45%
4th clearest
Wind
5 km/h
5th windiest
Solar energy
6.18 kWh/m²
Travel score
5.8
out of 10

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 21°C through the month.

A typical March day in San Marcos reaches about 21°C in the afternoon and slips back to 11°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 23°C. Set against its neighbours, March runs on par with February and on par with April.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12110
22110
32110
42110
52110
62110
72111
82111
92111
102111
112111
122111
132111
142111
152111
162111
172111
182111
192111
202111
212111
222111
232111
242111
252111
262111
272111
282111
292111
302111
312111

San Marcos weather by month

How March compares with the rest of the year at a glance. March is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 10°247.411.26.9
Feb21° / 10°257.911.57.0
Mar21° / 11°6416.711.95.8
Apr21° / 12°12423.812.34.5
May21° / 13°32329.712.73.5
Jun20° / 13°41629.212.93.3
Jul20° / 12°26828.312.83.6
Aug20° / 12°32529.712.53.4
Sep20° / 13°41529.712.13.2
Oct20° / 12°29328.811.73.5
Nov20° / 11°851811.35.1
Dec19° / 10°348.611.16.6

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 28% of March, with mostly cloudy or overcast conditions the remaining 29%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17822
27822
37822
47723
57723
67723
77723
87624
97624
107525
117426
127426
137327
147327
157129
167129
177030
187030
196931
206931
216832
226832
236733
246733
256733
266634
276634
286634
296634
306535
316535

Chance of precipitation in March

Any precipitation

San Marcos gets around 64 mm of rain over 16.7 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 54% and peaks near 71% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
136
237
337
438
539
640
741
842
943
1045
1146
1247
1349
1451
1552
1654
1756
1857
1959
2060
2162
2263
2364
2466
2567
2668
2769
2869
2970
3071
3171

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the dry band about 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1955
2955
3955
4946
5946
6937
7928
8928
9919
10919
11919
12919
139010
149010
159010
169010
179010
188911
198911
208911
218911
228812
238812
248812
258713
268713
278614
288515
298416
308317
318218

Wind in March

Winds average 5 km/h in March.

Across March, daily wind ranges from about 4 km/h on the calmest days to 5 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
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 h 42 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 24 minutes over March. Sunrise moves from 6:30 AM to 6:09 AM, and sunset from 6:11 PM to 6:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:306:11
211.76:296:11
311.76:296:11
411.76:286:12
511.76:276:12
611.86:276:12
711.86:266:12
811.86:256:12
911.86:256:13
1011.86:246:13
1111.86:236:13
1211.86:236:13
1311.96:226:13
1411.96:216:13
1511.96:216:14
1611.96:206:14
1711.96:196:14
1811.96:196:14
1911.96:186:14
2012.06:176:14
2112.06:166:14
2212.06:166:14
2312.06:156:15
2412.06:146:15
2512.06:136:15
2612.06:136:15
2712.16:126:15
2812.16:116:15
2912.16:106:15
3012.16:106:15
3112.16:096:15

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 6.18 kWh/m².

For context, solar energy here swings from a low near 4.48 kWh/m² to a high of 6.24 kWh/m² in April across the year — March's 6.18 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.1Intense
56.1Intense
66.2Intense
76.2Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.3Intense
316.3Intense
Planning a trip in March

Hazard calendar for San Marcos

In seasonPeak

None of San Marcos's seasonal hazards are active in March. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

San Marcos's rainy season runs May–October, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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).

5.8
Sightseeing
4th-best month of the year
3.5
Beach & pool
2nd-best month of the year

March is a reasonable time to visit San Marcos for sightseeing.

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 21°C and nights near 11°C. Pack rain gear and sun protection. About 17 days see rain.

rain gearsun protection

UV index in San Marcos in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 14 (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 April 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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 highApr 12UV 14Dec 16UV 9
UV index (midday)Level
Jan9Very high
Feb13Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec9Very 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 May — around 34 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 934 µg/m³Aug 1622 µg/m³
PM2.5 (µg/m³)Level
Jan23Moderate
Feb22Moderate
Mar25Moderate
Apr34Moderate
May34Moderate
Jun23Moderate
Jul23Moderate
Aug22Moderate
Sep23Moderate
Oct23Moderate
Nov23Moderate
Dec25Moderate
Location & terrain

Where is San Marcos?

San Marcos sits at 15.0°N, 91.8°W, 2,380 m above sea level, in Guatemala. The nearest listed city is San Pedro Sacatepéquez, 4.0 km away.

La EsperanzaMalacatánColombaCoatepeque

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 large variations in elevation — a maximum elevation change of 814 m around an average of 2,422 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 3,414 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,178 m.

The land around San Marcos is covered by trees (47%), artificial surfaces (30%) and cropland (22%) within 3 km, trees (80%) within 16 km, and trees (69%) within 80 km.

3 km
814 m
16 km
3,414 m
80 km
4,178 m
treesshrubsgrasslandcroplandartificial surfaceswatermangroves
March weather nearby: San Pedro Sacatepéquez 4.0 km · Comitancillo 15 km · Cabricán 20 km · Ostuncalco 21 km · La Esperanza 27 km · Malacatán 29 km · Colomba 29 km · Coatepeque 30 km

Guatemala travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 43% of US
price level, 2025
GDP per capita
$6,598
2025
Happiness
6.5 / 10
World Happiness, 2025
Safe drinking water
49%
of population, 2024
Homicide rate
23.4
per 100k, 2023
Road deaths
22.9
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 510
Religion
Evangelical 46%Roman Catholic 42%none 11%

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 (14.9644°, -91.7949°, elevation 2,380 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).