El Rosario in Fall
In fall (September, October and November), El Rosario sees average daytime highs around 30°C and overnight lows near 20°C, with 366 mm of rain over about 38 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 30°C in early September to 28°C by late November. The sky is clear or mostly clear about 40% of the time across fall, and the air most often feels oppressive.
Fall is El Rosario's 3rd-best season to visit on our travel score. For the whole year in context, see El Rosario's year-round climate.
- Avg daytime high
- 30°C
- 3rd-warmest season
- Avg overnight low
- 20°C
- Rainfall
- 366 mm
- 38 wet days
- Avg wind
- 4 km/h
- Travel score
- 5.0
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in El Rosario in Fall
Over the season highs ease from about 30°C in early September to 28°C by late November.
A typical fall day in El Rosario reaches about 30°C and drops to 20°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in El Rosario
Once humidity and wind are folded in, fall brings about 58 days that feel above 32°C and 0 that feel at or below 0°C.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
El Rosario 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 | 26° / 13° | 20 | 2.1 | 10.7 | 8.1 |
| Feb | 27° / 13° | 19 | 1.4 | 11.2 | 8.1 |
| Mar | 29° / 14° | 5 | 0.6 | 11.8 | 7.4 |
| Apr | 30° / 16° | 1 | 0.2 | 12.5 | 6.3 |
| May | 32° / 19° | 3 | 0.5 | 13.1 | 5.2 |
| Jun | 32° / 23° | 70 | 9.3 | 13.4 | 4.1 |
| Jul | 31° / 23° | 236 | 24 | 13.3 | 3.0 |
| Aug | 30° / 23° | 281 | 26.1 | 12.8 | 2.9 |
| Sep | 30° / 23° | 244 | 24.3 | 12.1 | 3.2 |
| Oct | 30° / 21° | 92 | 11.3 | 11.5 | 5.0 |
| Nov | 29° / 17° | 30 | 2.6 | 10.9 | 6.9 |
| Dec | 27° / 14° | 18 | 2.3 | 10.6 | 8.0 |
Cloud cover in Fall
The sky is clear or mostly clear about 40% of the time across fall.
Chance of precipitation in Fall
El Rosario gets around 366 mm of rain over 38 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 4 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 30 min in early September to 10 h 42 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 El Rosario
In fall, El Rosario overlaps its pacific hurricane and monsoon season. The full year is below, with each hazard's peak months called out.
El Rosario sits in the eastern Pacific hurricane zone; the season peaks August–September.
El Rosario's monsoon runs July–September, when most of the year's rain falls.
Is fall a good time to visit El Rosario?
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 El Rosario for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for El Rosario in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, El Rosario sees daytime highs around 30°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 38 days see rain.
Sea temperature near El Rosario in Fall
The nearest coast averages about 29°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 31 km away) is warmest in August at about 30°C and coldest in March near 23°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 24 | 23 | 23 | 23 | 26 | 28 | 29 | 30 | 30 | 30 | 28 | 25 |
| Comfort | Refreshing | Refreshing | Refreshing | Refreshing | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 24 | Refreshing |
| Feb | 23 | Refreshing |
| Mar | 23 | Refreshing |
| Apr | 23 | Refreshing |
| May | 26 | Warm |
| Jun | 28 | Warm |
| Jul | 29 | Tropical |
| Aug | 30 | Tropical |
| Sep | 30 | Tropical |
| Oct | 30 | Tropical |
| Nov | 28 | Warm |
| Dec | 25 | Warm |
UV index in El Rosario in Fall
Clear-sky midday UV across fall averages around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in El Rosario peaks around May 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 6 (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) | 6 | 9 | 10 | 12 | 12 | 12 | 12 | 12 | 11 | 8 | 6 | 6 |
| Level | High | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 9 | Very high |
| Mar | 10 | Extreme |
| Apr | 12 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 11 | Extreme |
| Oct | 8 | Very high |
| Nov | 6 | High |
| Dec | 6 | High |
Air quality in El Rosario 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 El Rosario is worst in May — around 22 µg/m³ PM2.5 (moderate), about 3.8× the cleanest month (January, 6 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) | 6 | 6 | 7 | 11 | 22 | 14 | 8 | 8 | 9 | 8 | 7 | 6 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 6 | Good |
| Feb | 6 | Good |
| Mar | 7 | Good |
| Apr | 11 | Good |
| May | 22 | Moderate |
| Jun | 14 | Moderate |
| Jul | 8 | Good |
| Aug | 8 | Good |
| Sep | 9 | Good |
| Oct | 8 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
Where is El Rosario?
El Rosario sits at 23.0°N, 105.9°W, 33 m above sea level, in Mexico. The nearest listed city is Escuinapa de Hidalgo, 19 km away.
Topography around El Rosario
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of El Rosario.
Within 3 km, the terrain around El Rosario has only modest variations in elevation — a maximum elevation change of 222 m around an average of 42 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 915 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,912 m.
The land around El Rosario is covered by trees (43%) and cropland (25%) within 3 km, trees (68%) within 16 km, and trees (59%) and water (25%) 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 El Rosario (22.9903°, -105.8542°, elevation 33 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.