San Salvador El Seco in Winter
In winter (December, January and February), San Salvador El Seco sees average daytime highs around 20°C and overnight lows near 6°C, with 41 mm of rain over about 9 wet days across the season. It is the coldest season of the year and the driest season of the year.
Across winter, daytime highs hold fairly steady around 20°C. The sky is clear or mostly clear about 61% of the time across winter, and the air most often feels dry.
Winter is San Salvador El Seco's best season of the year to visit on our travel score. For the whole year in context, see San Salvador El Seco's year-round climate.
- Avg daytime high
- 20°C
- coldest season of the year
- Avg overnight low
- 6°C
- Rainfall
- 41 mm
- 9 wet days
- Avg wind
- 8 km/h
- Travel score
- 7.8
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in San Salvador El Seco in Winter
Across winter, daytime highs hold fairly steady around 20°C.
A typical winter day in San Salvador El Seco reaches about 20°C and drops to 6°C overnight. The warmest of the three months is February, the coolest January.
San Salvador El Seco weather by month
How the three winter months (December, January and February) 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 | 19° / 5° | 15 | 3.1 | 11 | 7.6 |
| Feb | 21° / 6° | 15 | 3.1 | 11.4 | 8.0 |
| Mar | 23° / 8° | 39 | 7.8 | 11.9 | 7.6 |
| Apr | 24° / 9° | 72 | 12 | 12.4 | 6.8 |
| May | 23° / 11° | 113 | 16.7 | 12.9 | 6.0 |
| Jun | 23° / 11° | 157 | 16.7 | 13.1 | 5.6 |
| Jul | 22° / 10° | 106 | 13.9 | 13 | 6.0 |
| Aug | 23° / 11° | 118 | 14.8 | 12.6 | 5.9 |
| Sep | 21° / 11° | 142 | 16.4 | 12.1 | 5.3 |
| Oct | 21° / 10° | 76 | 10.6 | 11.6 | 6.4 |
| Nov | 21° / 7° | 28 | 5.3 | 11.1 | 7.3 |
| Dec | 20° / 6° | 11 | 2.4 | 10.9 | 7.8 |
Cloud cover in Winter
The sky is clear or mostly clear about 61% of the time across winter.
Chance of precipitation in Winter
San Salvador El Seco gets around 41 mm of rain over 9 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 8 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 54 min in early December to 11 h 36 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 5.3 kWh/m².
Hazard calendar for San Salvador El Seco
None of San Salvador El Seco's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
San Salvador El Seco's rainy season runs April–October, when most of the year's rain falls.
Is winter a good time to visit San Salvador El Seco?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is one of the better times to visit San Salvador El Seco for general sightseeing.
What to pack for San Salvador El Seco in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, San Salvador El Seco sees daytime highs around 20°C and nights near 6°C. Worth packing: a warm layer and sun protection. About 9 days see rain.
UV index in San Salvador El Seco in Winter
Clear-sky midday UV across winter averages around 10 (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 Salvador El Seco peaks around April 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 8 (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 | 12 | 14 | 15 | 10 | 14 | 13 | 14 | 13 | 12 | 9 | 8 |
| 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 | 12 | Extreme |
| Mar | 14 | Extreme |
| Apr | 15 | Extreme |
| May | 10 | Extreme |
| Jun | 14 | Extreme |
| Jul | 13 | Extreme |
| Aug | 14 | Extreme |
| Sep | 13 | Extreme |
| Oct | 12 | Extreme |
| Nov | 9 | Very high |
| Dec | 8 | Very high |
Air quality in San Salvador El Seco in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in San Salvador El Seco is worst in May — around 69 µg/m³ PM2.5 (unhealthy), about 1.9× the cleanest month (October, 38 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 53 | 54 | 56 | 63 | 69 | 48 | 41 | 38 | 39 | 38 | 49 | 59 |
| Level | Poor | Poor | Unhealthy | Unhealthy | Unhealthy | Poor | Poor | Poor | Poor | Poor | Poor | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 53 | Poor |
| Feb | 54 | Poor |
| Mar | 56 | Unhealthy |
| Apr | 63 | Unhealthy |
| May | 69 | Unhealthy |
| Jun | 48 | Poor |
| Jul | 41 | Poor |
| Aug | 38 | Poor |
| Sep | 39 | Poor |
| Oct | 38 | Poor |
| Nov | 49 | Poor |
| Dec | 59 | Unhealthy |
Where is San Salvador El Seco?
San Salvador El Seco sits at 19.1°N, 97.6°W, 2,437 m above sea level, in Mexico. The nearest listed city is Acatzingo, 22 km away.
Topography around San Salvador El Seco
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Salvador El Seco.
Within 3 km, the terrain around San Salvador El Seco has only modest variations in elevation — a maximum elevation change of 244 m around an average of 2,387 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 750 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,927 m.
The land around San Salvador El Seco is covered by cropland (48%) and shrubs (22%) within 3 km, cropland (42%) and grassland (24%) within 16 km, and trees (32%), cropland (24%) and shrubs (20%) within 80 km.
Mexico travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B
- 120 / 127 V · 60 Hz
- Prices
- ≈ 54% of US
- price level, 2025
- GDP per capita
- $13,889
- 2025
- Happiness
- 7.0 / 10
- World Happiness, 2025
- Safe drinking water
- 43%
- of population, 2024
- Homicide rate
- 24.9
- per 100k, 2023
- Road deaths
- 12.8
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Very low
- EF EPI 440
- 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 Salvador El Seco (19.1333°, -97.6417°, elevation 2,437 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.