San Marcos in Spring
In spring (March, April and May), San Marcos sees average daytime highs around 21°C and overnight lows near 12°C, with 510 mm of rain over about 70 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.
Across spring, daytime highs hold fairly steady around 21°C. The sky is clear or mostly clear about 24% of the time across spring, and the air most often feels dry.
Spring is San Marcos's 2nd-best season to visit on our travel score. For the whole year in context, see San Marcos's year-round climate.
- Avg daytime high
- 21°C
- warmest season of the year
- Avg overnight low
- 12°C
- Rainfall
- 510 mm
- 70 wet days
- Avg wind
- 4 km/h
- Travel score
- 4.6
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in San Marcos in Spring
Across spring, daytime highs hold fairly steady around 21°C.
A typical spring day in San Marcos reaches about 21°C and drops to 12°C overnight. The warmest of the three months is April, the coolest March.
San Marcos weather by month
How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 20° / 10° | 24 | 7.4 | 11.2 | 6.9 |
| Feb | 21° / 10° | 25 | 7.9 | 11.5 | 7.0 |
| Mar | 21° / 11° | 64 | 16.7 | 11.9 | 5.8 |
| Apr | 21° / 12° | 124 | 23.8 | 12.3 | 4.5 |
| May | 21° / 13° | 323 | 29.7 | 12.7 | 3.5 |
| Jun | 20° / 13° | 416 | 29.2 | 12.9 | 3.3 |
| Jul | 20° / 12° | 268 | 28.3 | 12.8 | 3.6 |
| Aug | 20° / 12° | 325 | 29.7 | 12.5 | 3.4 |
| Sep | 20° / 13° | 415 | 29.7 | 12.1 | 3.2 |
| Oct | 20° / 12° | 293 | 28.8 | 11.7 | 3.5 |
| Nov | 20° / 11° | 85 | 18 | 11.3 | 5.1 |
| Dec | 19° / 10° | 34 | 8.6 | 11.1 | 6.6 |
Cloud cover in Spring
The sky is clear or mostly clear about 24% of the time across spring.
Chance of precipitation in Spring
San Marcos gets around 510 mm of rain over 70 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 4 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 42 min in early March to 12 h 48 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 6.0 kWh/m².
Hazard calendar for San Marcos
In spring, San Marcos overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
San Marcos's rainy season runs May–October, when most of the year's rain falls.
Is spring a good time to visit San Marcos?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit San Marcos for sightseeing.
What to pack for San Marcos in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, San Marcos sees daytime highs around 21°C and nights near 12°C. Pack rain gear and sun protection. About 70 days see rain.
UV index in San Marcos in Spring
Clear-sky midday UV across spring averages 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 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 9 | 13 | 14 | 14 | 12 | 13 | 13 | 13 | 12 | 11 | 9 | 9 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 13 | Extreme |
| Mar | 14 | Extreme |
| Apr | 14 | Extreme |
| May | 12 | Extreme |
| Jun | 13 | Extreme |
| Jul | 13 | Extreme |
| Aug | 13 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 9 | Very high |
Air quality in San Marcos in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 23 | 22 | 25 | 34 | 34 | 23 | 23 | 22 | 23 | 23 | 23 | 25 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 23 | Moderate |
| Feb | 22 | Moderate |
| Mar | 25 | Moderate |
| Apr | 34 | Moderate |
| May | 34 | Moderate |
| Jun | 23 | Moderate |
| Jul | 23 | Moderate |
| Aug | 22 | Moderate |
| Sep | 23 | Moderate |
| Oct | 23 | Moderate |
| Nov | 23 | Moderate |
| Dec | 25 | Moderate |
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.
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.
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
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.