San Isidro in Summer
In summer (June, July and August), San Isidro sees average daytime highs around 23°C and overnight lows near 20°C, with 16 mm of rain over about 5 wet days across the season. It is the warmest season of the year and the driest season of the year.
Over the season highs climb from about 20°C in early June to 24°C by late August. The sky is clear or mostly clear about 90% of the time across summer, and the air most often feels humid.
Summer is San Isidro's best season of the year to visit on our travel score. San Isidro has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see San Isidro's year-round climate.
- Avg daytime high
- 23°C
- warmest season of the year
- Avg overnight low
- 20°C
- Rainfall
- 16 mm
- 5 wet days
- Avg wind
- 16 km/h
- Travel score
- 9.1
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in San Isidro in Summer
Over the season highs climb from about 20°C in early June to 24°C by late August.
A typical summer day in San Isidro reaches about 23°C and drops to 20°C overnight. The warmest of the three months is August, the coolest June.
San Isidro 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 | 18° / 16° | 33 | 5.9 | 10.4 | 6.6 |
| Feb | 17° / 16° | 37 | 6.2 | 11 | 6.6 |
| Mar | 18° / 16° | 39 | 7 | 11.8 | 6.7 |
| Apr | 18° / 16° | 35 | 7.5 | 12.7 | 6.7 |
| May | 19° / 17° | 24 | 6.2 | 13.4 | 7.3 |
| Jun | 21° / 19° | 12 | 3.3 | 13.7 | 8.3 |
| Jul | 23° / 21° | 1 | 0.4 | 13.6 | 9.6 |
| Aug | 24° / 22° | 3 | 1 | 13 | 9.5 |
| Sep | 23° / 21° | 20 | 4.3 | 12.2 | 8.4 |
| Oct | 22° / 20° | 42 | 8.7 | 11.3 | 7.3 |
| Nov | 20° / 19° | 34 | 7.2 | 10.6 | 7.0 |
| Dec | 19° / 17° | 46 | 7.3 | 10.3 | 6.9 |
Cloud cover in Summer
The sky is clear or mostly clear about 90% of the time across summer.
Chance of precipitation in Summer
San Isidro gets around 16 mm of rain over 5 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 16 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 36 min in early June to 12 h 36 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 7.5 kWh/m².
Hazard calendar for San Isidro
In summer, San Isidro overlaps its atlantic hurricane and dust season. The full year is below, with each hazard's peak months called out.
San Isidro sits in the Atlantic hurricane belt; the season peaks August–October.
San Isidro sees seasonal dust haze (July–August), heaviest in July.
Is summer a good time to visit San Isidro?
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 one of the better times to visit San Isidro for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for San Isidro in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, San Isidro sees daytime highs around 23°C and nights near 20°C. Pack sun protection. Worth having: light clothes. About 5 days see rain.
Sea temperature near San Isidro in Summer
The nearest coast averages about 22°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in September at about 24°C and coldest in March near 19°C.
It's comfortable for a long swim from May 9 to Jan 10 — about 8.1 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 20 | 19 | 19 | 19 | 20 | 21 | 22 | 23 | 24 | 24 | 22 | 21 |
| Comfort | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 20 | Cool |
| Feb | 19 | Cool |
| Mar | 19 | Cool |
| Apr | 19 | Cool |
| May | 20 | Refreshing |
| Jun | 21 | Refreshing |
| Jul | 22 | Refreshing |
| Aug | 23 | Refreshing |
| Sep | 24 | Refreshing |
| Oct | 24 | Refreshing |
| Nov | 22 | Refreshing |
| Dec | 21 | Refreshing |
UV index in San Isidro in Summer
Clear-sky midday UV across summer 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 Isidro peaks around July 17 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 4 (moderate).
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) | 4 | 6 | 9 | 9 | 10 | 11 | 11 | 11 | 8 | 9 | 5 | 4 |
| Level | Moderate | High | Very high | Very high | Very high | Extreme | Extreme | Extreme | Very high | Very high | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 6 | High |
| Mar | 9 | Very high |
| Apr | 9 | Very high |
| May | 10 | Very high |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 8 | Very high |
| Oct | 9 | Very high |
| Nov | 5 | Moderate |
| Dec | 4 | Moderate |
Air quality in San Isidro 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 San Isidro is worst in February — around 19 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (June, 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) | 18 | 19 | 10 | 7 | 7 | 6 | 9 | 11 | 8 | 9 | 8 | 17 |
| Level | Moderate | Moderate | Good | Good | Good | Good | Good | Good | Good | Good | Good | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 18 | Moderate |
| Feb | 19 | Moderate |
| Mar | 10 | Good |
| Apr | 7 | Good |
| May | 7 | Good |
| Jun | 6 | Good |
| Jul | 9 | Good |
| Aug | 11 | Good |
| Sep | 8 | Good |
| Oct | 9 | Good |
| Nov | 8 | Good |
| Dec | 17 | Moderate |
Where is San Isidro?
San Isidro sits at 28.1°N, 16.6°W, 207 m above sea level, in Spain. The nearest listed city is Granadilla de Abona, 5.0 km away.
Topography around San Isidro
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Isidro.
Within 3 km, the terrain around San Isidro has large variations in elevation — a maximum elevation change of 605 m around an average of 214 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,658 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,670 m.
The land around San Isidro is covered by grassland (54%) within 3 km, water (42%) and grassland (25%) within 16 km, and water (83%) within 80 km.
Spain travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 65% of US
- price level, 2025
- GDP per capita
- $38,627
- 2025
- Happiness
- 6.5 / 10
- World Happiness, 2025
- Safe drinking water
- 99%
- of population, 2024
- Homicide rate
- 0.7
- per 100k, 2023
- Road deaths
- 3.9
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 540
- 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 Isidro (28.0762°, -16.558°, elevation 207 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.