Isla in Summer
In summer (June, July and August), Isla sees average daytime highs around 32°C and overnight lows near 24°C, with 834 mm of rain over about 76 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Over the season highs ease from about 34°C in early June to 32°C by late August. The sky is clear or mostly clear about 14% of the time across summer, and the air most often feels miserable.
Summer is Isla's weakest season of the year to visit on our travel score. For the whole year in context, see Isla's year-round climate.
- Avg daytime high
- 32°C
- 2nd-warmest season
- Avg overnight low
- 24°C
- Rainfall
- 834 mm
- 76 wet days
- Avg wind
- 7 km/h
- Travel score
- 2.4
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Isla in Summer
Over the season highs ease from about 34°C in early June to 32°C by late August.
A typical summer day in Isla reaches about 32°C and drops to 24°C overnight. The warmest of the three months is June, the coolest August.
How summer really feels in Isla
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.
Isla 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° / 18° | 51 | 9.1 | 11 | 6.7 |
| Feb | 28° / 19° | 30 | 6 | 11.4 | 6.4 |
| Mar | 32° / 21° | 23 | 4.9 | 11.9 | 4.9 |
| Apr | 34° / 23° | 31 | 5.2 | 12.4 | 3.3 |
| May | 35° / 25° | 79 | 11.4 | 12.8 | 2.5 |
| Jun | 33° / 24° | 243 | 22.6 | 13.1 | 2.3 |
| Jul | 32° / 24° | 294 | 26.4 | 13 | 2.5 |
| Aug | 32° / 24° | 297 | 26.5 | 12.6 | 2.5 |
| Sep | 32° / 24° | 315 | 24.9 | 12.1 | 2.7 |
| Oct | 30° / 23° | 208 | 19.2 | 11.6 | 3.9 |
| Nov | 28° / 21° | 93 | 12.8 | 11.2 | 5.6 |
| Dec | 27° / 19° | 48 | 9.5 | 10.9 | 6.5 |
Cloud cover in Summer
The sky is clear or mostly clear about 14% of the time across summer.
Chance of precipitation in Summer
Isla gets around 834 mm of rain over 76 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 7 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 hours in early June to 12 h 24 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 5.5 kWh/m².
Hazard calendar for Isla
In summer, Isla overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Isla's monsoon runs June–October, when most of the year's rain falls.
Is summer a good time to visit Isla?
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 Isla.
What to pack for Isla in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Isla sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 76 days see rain.
UV index in Isla 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 Isla peaks around August 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 7 (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) | 8 | 10 | 11 | 13 | 9 | 12 | 11 | 13 | 11 | 10 | 8 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 10 | Extreme |
| Mar | 11 | Extreme |
| Apr | 13 | Extreme |
| May | 9 | Very high |
| Jun | 12 | Extreme |
| Jul | 11 | Extreme |
| Aug | 13 | Extreme |
| Sep | 11 | Extreme |
| Oct | 10 | Extreme |
| Nov | 8 | Very high |
| Dec | 7 | High |
Air quality in Isla 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 Isla is worst in May — around 41 µg/m³ PM2.5 (poor), about 3.0× the cleanest month (January, 14 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) | 14 | 15 | 18 | 27 | 41 | 30 | 34 | 26 | 23 | 16 | 15 | 15 |
| Level | Moderate | Moderate | Moderate | Moderate | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 15 | Moderate |
| Mar | 18 | Moderate |
| Apr | 27 | Moderate |
| May | 41 | Poor |
| Jun | 30 | Moderate |
| Jul | 34 | Moderate |
| Aug | 26 | Moderate |
| Sep | 23 | Moderate |
| Oct | 16 | Moderate |
| Nov | 15 | Moderate |
| Dec | 15 | Moderate |
Where is Isla?
Isla sits at 18.0°N, 95.5°W, 67 m above sea level, in Mexico. The nearest listed city is Loma Bonita, 38 km away.
Topography around Isla
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Isla.
Within 3 km, the terrain around Isla has only modest variations in elevation — a maximum elevation change of 56 m around an average of 52 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 155 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,657 m.
The land around Isla is covered by grassland (52%) and trees (25%) within 3 km, grassland (60%) and trees (27%) within 16 km, and grassland (46%) and trees (36%) 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 Isla (18.0278°, -95.5295°, elevation 67 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.