Sant Boi de Llobregat in Summer
In summer (June, July and August), Sant Boi de Llobregat sees average daytime highs around 25°C and overnight lows near 21°C, with 95 mm of rain over about 16 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 21°C in early June to 25°C by late August. The sky is clear or mostly clear about 66% of the time across summer, and the air most often feels muggy.
Summer is Sant Boi de Llobregat's best season of the year to visit on our travel score. For the whole year in context, see Sant Boi de Llobregat's year-round climate.
- Avg daytime high
- 25°C
- warmest season of the year
- Avg overnight low
- 21°C
- Rainfall
- 95 mm
- 16 wet days
- Avg wind
- 11 km/h
- Travel score
- 8.0
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Sant Boi de Llobregat in Summer
Over the season highs climb from about 21°C in early June to 25°C by late August.
A typical summer day in Sant Boi de Llobregat reaches about 25°C and drops to 21°C overnight. The warmest of the three months is August, the coolest June.
Sant Boi de Llobregat 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 | 13° / 8° | 45 | 6.7 | 9.4 | 3.8 |
| Feb | 13° / 8° | 36 | 5.8 | 10.3 | 4.0 |
| Mar | 14° / 10° | 40 | 6 | 11.7 | 4.8 |
| Apr | 16° / 12° | 48 | 7.6 | 13.1 | 5.4 |
| May | 19° / 15° | 43 | 6.6 | 14.3 | 6.7 |
| Jun | 23° / 19° | 29 | 4.7 | 14.9 | 8.0 |
| Jul | 25° / 22° | 22 | 4.6 | 14.7 | 8.3 |
| Aug | 26° / 22° | 44 | 6.4 | 13.7 | 7.7 |
| Sep | 24° / 20° | 86 | 9.9 | 12.3 | 7.1 |
| Oct | 20° / 16° | 94 | 10.1 | 10.9 | 6.5 |
| Nov | 16° / 12° | 64 | 7.8 | 9.7 | 5.5 |
| Dec | 13° / 9° | 44 | 6.4 | 9.1 | 4.3 |
Cloud cover in Summer
The sky is clear or mostly clear about 66% of the time across summer.
Chance of precipitation in Summer
Sant Boi de Llobregat gets around 95 mm of rain over 16 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 11 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 48 min in early June to 13 hours 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 6.7 kWh/m².
Is summer a good time to visit Sant Boi de Llobregat?
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 Sant Boi de Llobregat for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Sant Boi de Llobregat in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Sant Boi de Llobregat sees daytime highs around 25°C and nights near 21°C. Pack sun protection. Worth having: light clothes. About 16 days see rain.
Sea temperature near Sant Boi de Llobregat in Summer
The nearest coast averages about 24°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 25 km away) is warmest in August at about 26°C and coldest in February near 13°C.
It's comfortable for a long swim from Jun 8 to Oct 26 — about 4.6 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 14 | 13 | 14 | 15 | 17 | 21 | 24 | 26 | 24 | 21 | 18 | 15 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Warm | Warm | Warm | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 14 | Bracing |
| Feb | 13 | Bracing |
| Mar | 14 | Bracing |
| Apr | 15 | Bracing |
| May | 17 | Cool |
| Jun | 21 | Refreshing |
| Jul | 24 | Warm |
| Aug | 26 | Warm |
| Sep | 24 | Warm |
| Oct | 21 | Refreshing |
| Nov | 18 | Cool |
| Dec | 15 | Cool |
UV index in Sant Boi de Llobregat in Summer
Clear-sky midday UV across summer 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 Sant Boi de Llobregat peaks around July 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 7 | 6 | 8 | 9 | 8 | 6 | 4 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | High | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 7 | High |
| May | 6 | High |
| Jun | 8 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Moderate |
| Dec | 1 | Low |
Where is Sant Boi de Llobregat?
Sant Boi de Llobregat sits at 41.3°N, 2.0°E, 45 m above sea level, in Spain. The nearest listed city is Sant Joan Despí, 3.0 km away.
Topography around Sant Boi de Llobregat
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sant Boi de Llobregat.
Within 3 km, the terrain around Sant Boi de Llobregat has significant variations in elevation — a maximum elevation change of 276 m around an average of 42 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 650 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,677 m.
The land around Sant Boi de Llobregat is covered by artificial surfaces (35%) and trees (31%) within 3 km, trees (35%), water (28%) and artificial surfaces (22%) within 16 km, and trees (38%) and water (34%) 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 Sant Boi de Llobregat (41.3436°, 2.0366°, elevation 45 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.