El Rosario in Summer
In summer (June, July and August), El Rosario sees average daytime highs around 31°C and overnight lows near 23°C, with 587 mm of rain over about 59 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Over the season highs ease from about 32°C in early June to 30°C by late August. The sky is clear or mostly clear about 17% of the time across summer, and the air most often feels oppressive.
Summer is El Rosario's weakest season of the year to visit on our travel score. For the whole year in context, see El Rosario's year-round climate.
- Avg daytime high
- 31°C
- warmest season of the year
- Avg overnight low
- 23°C
- Rainfall
- 587 mm
- 59 wet days
- Avg wind
- 5 km/h
- Travel score
- 3.3
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in El Rosario in Summer
Over the season highs ease from about 32°C in early June to 30°C by late August.
A typical summer day in El Rosario reaches about 31°C and drops to 23°C overnight. The warmest of the three months is June, the coolest June.
How summer really feels in El Rosario
Once humidity and wind are folded in, summer brings about 92 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
El Rosario weather by month
How the three summer months (June, July and August) 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 Summer
The sky is clear or mostly clear about 17% of the time across summer.
Chance of precipitation in Summer
El Rosario gets around 587 mm of rain over 59 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 5 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 18 min in early June to 12 h 30 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.6 kWh/m².
Hazard calendar for El Rosario
In summer, 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 summer a good time to visit El Rosario?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in El Rosario.
What to pack for El Rosario in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, El Rosario sees daytime highs around 31°C and nights near 23°C. Pack light clothes, rain gear and sun protection. About 59 days see rain.
Sea temperature near El Rosario in Summer
The nearest coast averages about 29°C across summer — 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 Summer
Clear-sky midday UV across summer averages around 12 (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 Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer 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.