San Francisco El Alto in Fall
In fall (September, October and November), San Francisco El Alto sees average daytime highs around 20°C and overnight lows near 11°C, with 619 mm of rain over about 69 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Across fall, daytime highs hold fairly steady around 20°C. The sky is clear or mostly clear about 10% of the time across fall, and the air most often feels dry.
Fall is San Francisco El Alto's 3rd-best season to visit on our travel score. For the whole year in context, see San Francisco El Alto's year-round climate.
- Avg daytime high
- 20°C
- 3rd-warmest season
- Avg overnight low
- 11°C
- Rainfall
- 619 mm
- 69 wet days
- Avg wind
- 5 km/h
- Travel score
- 4.2
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in San Francisco El Alto in Fall
Across fall, daytime highs hold fairly steady around 20°C.
A typical fall day in San Francisco El Alto reaches about 20°C and drops to 11°C overnight. The warmest of the three months is September, the coolest November.
San Francisco El Alto weather by month
How the three fall months (September, October and November) 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° / 9° | 16 | 5 | 11.2 | 7.2 |
| Feb | 21° / 9° | 16 | 4.1 | 11.5 | 7.6 |
| Mar | 22° / 10° | 42 | 9.7 | 11.9 | 7.0 |
| Apr | 22° / 11° | 94 | 17 | 12.3 | 5.7 |
| May | 22° / 12° | 258 | 27 | 12.7 | 4.0 |
| Jun | 20° / 12° | 344 | 28.4 | 12.9 | 3.4 |
| Jul | 20° / 11° | 203 | 25.7 | 12.8 | 3.9 |
| Aug | 20° / 12° | 244 | 27.8 | 12.5 | 3.6 |
| Sep | 20° / 12° | 322 | 29.3 | 12.1 | 3.3 |
| Oct | 20° / 12° | 231 | 26.3 | 11.7 | 3.8 |
| Nov | 19° / 10° | 66 | 13.7 | 11.3 | 5.6 |
| Dec | 19° / 9° | 27 | 6.2 | 11.1 | 6.9 |
Cloud cover in Fall
The sky is clear or mostly clear about 10% of the time across fall.
Chance of precipitation in Fall
San Francisco El Alto gets around 619 mm of rain over 69 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 5 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 18 min in early September to 11 h 12 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 4.7 kWh/m².
Hazard calendar for San Francisco El Alto
In fall, San Francisco El Alto overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
San Francisco El Alto's rainy season runs May–October, when most of the year's rain falls.
Is fall a good time to visit San Francisco El Alto?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit San Francisco El Alto for sightseeing.
What to pack for San Francisco El Alto in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, San Francisco El Alto sees daytime highs around 20°C and nights near 11°C. Pack rain gear. Worth having: sun protection. About 69 days see rain.
UV index in San Francisco El Alto in Fall
Clear-sky midday UV across fall averages around 11 (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 Francisco El Alto 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 Francisco El Alto in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in San Francisco El Alto 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 Francisco El Alto?
San Francisco El Alto sits at 14.9°N, 91.4°W, 2,642 m above sea level, in Guatemala. The nearest listed city is San Andrés Xecul, 6.0 km away.
Topography around San Francisco El Alto
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Francisco El Alto.
Within 3 km, the terrain around San Francisco El Alto has large variations in elevation — a maximum elevation change of 655 m around an average of 2,576 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,396 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,175 m.
The land around San Francisco El Alto is covered by trees (54%) and cropland (25%) within 3 km, trees (55%) and cropland (25%) within 16 km, and trees (75%) 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 Francisco El Alto (14.9449°, -91.4431°, elevation 2,642 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.