Quarteira in Summer
In summer (June, July and August), Quarteira sees average daytime highs around 24°C and overnight lows near 19°C, with 7 mm of rain over about 1 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 24°C by late August. The sky is clear or mostly clear about 86% of the time across summer, and the air most often feels humid.
Summer is Quarteira's best season of the year to visit on our travel score. For the whole year in context, see Quarteira's year-round climate.
- Avg daytime high
- 24°C
- warmest season of the year
- Avg overnight low
- 19°C
- Rainfall
- 7 mm
- 1 wet days
- Avg wind
- 18 km/h
- Travel score
- 9.3
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Quarteira in Summer
Over the season highs climb from about 21°C in early June to 24°C by late August.
A typical summer day in Quarteira reaches about 24°C and drops to 19°C overnight. The warmest of the three months is August, the coolest June.
Quarteira 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 | 15° / 12° | 55 | 7.2 | 9.7 | 4.9 |
| Feb | 15° / 12° | 47 | 5.5 | 10.6 | 5.1 |
| Mar | 16° / 13° | 53 | 6.5 | 11.7 | 5.7 |
| Apr | 17° / 14° | 42 | 5.7 | 12.9 | 6.4 |
| May | 19° / 16° | 24 | 4.5 | 14 | 7.4 |
| Jun | 22° / 18° | 5 | 0.9 | 14.5 | 8.9 |
| Jul | 24° / 20° | 0 | 0.1 | 14.3 | 9.6 |
| Aug | 25° / 20° | 2 | 0.3 | 13.4 | 9.5 |
| Sep | 23° / 19° | 19 | 2.7 | 12.3 | 8.6 |
| Oct | 20° / 17° | 67 | 6.6 | 11 | 7.1 |
| Nov | 18° / 15° | 70 | 7.3 | 10 | 6.3 |
| Dec | 16° / 13° | 90 | 7.7 | 9.5 | 5.3 |
Cloud cover in Summer
The sky is clear or mostly clear about 86% of the time across summer.
Chance of precipitation in Summer
Quarteira gets around 7 mm of rain over 1 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 18 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 24 min in early June to 12 h 54 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 7.6 kWh/m².
Is summer a good time to visit Quarteira?
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 Quarteira for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Quarteira in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Quarteira sees daytime highs around 24°C and nights near 19°C. Pack sun protection. Worth having: light clothes.
Sea temperature near Quarteira in Summer
The nearest coast averages about 20°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 August at about 21°C and coldest in February near 15°C.
It's comfortable for a long swim from Jul 18 to Oct 2 — about 2.5 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 16 | 15 | 15 | 16 | 17 | 19 | 20 | 21 | 21 | 20 | 18 | 17 |
| Comfort | Cool | Cool | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Refreshing | Cool | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 16 | Cool |
| Feb | 15 | Cool |
| Mar | 15 | Cool |
| Apr | 16 | Cool |
| May | 17 | Cool |
| Jun | 19 | Cool |
| Jul | 20 | Refreshing |
| Aug | 21 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 20 | Cool |
| Nov | 18 | Cool |
| Dec | 17 | Cool |
UV index in Quarteira in Summer
Clear-sky midday UV across summer averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Quarteira peaks around July 14 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (moderate).
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 | 7 | 8 | 7 | 9 | 10 | 9 | 7 | 5 | 3 | 2 |
| Level | Moderate | Moderate | High | Very high | Very high | Very high | Extreme | Very high | High | High | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 3 | Moderate |
| Mar | 7 | High |
| Apr | 8 | Very high |
| May | 7 | Very high |
| Jun | 9 | Very high |
| Jul | 10 | Extreme |
| Aug | 9 | Very high |
| Sep | 7 | High |
| Oct | 5 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Where is Quarteira?
Quarteira sits at 37.1°N, 8.1°W, 23 m above sea level, in Portugal. The nearest listed city is Loulé, 10 km away.
Topography around Quarteira
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Quarteira.
Within 3 km, the terrain around Quarteira has only modest variations in elevation — a maximum elevation change of 60 m around an average of 14 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 371 m; within 80 km, large variations in elevation — a maximum elevation change of 894 m.
The land around Quarteira is covered by water (41%) and grassland (22%) within 3 km, water (43%) and grassland (22%) within 16 km, and water (39%) and grassland (29%) within 80 km.
Portugal travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / E / F
- 230 V · 50 Hz
- Prices
- ≈ 60% of US
- price level, 2025
- GDP per capita
- $32,082
- 2025
- Happiness
- 6.0 / 10
- World Happiness, 2025
- Safe drinking water
- 95%
- of population, 2024
- Homicide rate
- 0.7
- per 100k, 2022
- Road deaths
- 8.2
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very high
- EF EPI 612
- 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 Quarteira (37.0695°, -8.1006°, elevation 23 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.