Estoril in Summer
In summer (June, July and August), Estoril sees average daytime highs around 19°C and overnight lows near 18°C, with 13 mm of rain over about 3 wet days across the season. It is the warmest season of the year and the driest season of the year.
Across summer, daytime highs hold fairly steady around 19°C. The sky is clear or mostly clear about 76% of the time across summer, and the air most often feels humid.
Summer is Estoril's best season of the year to visit on our travel score. Estoril 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 Estoril's year-round climate.
- Avg daytime high
- 19°C
- warmest season of the year
- Avg overnight low
- 18°C
- Rainfall
- 13 mm
- 3 wet days
- Avg wind
- 25 km/h
- Travel score
- 8.0
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Estoril in Summer
Across summer, daytime highs hold fairly steady around 19°C.
A typical summer day in Estoril reaches about 19°C and drops to 18°C overnight. The warmest of the three months is August, the coolest June.
Estoril 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 | 14° / 12° | 81 | 10.2 | 9.6 | 4.3 |
| Feb | 14° / 12° | 60 | 8.2 | 10.5 | 4.3 |
| Mar | 15° / 13° | 56 | 8.1 | 11.7 | 4.7 |
| Apr | 15° / 14° | 50 | 7.8 | 13 | 5.1 |
| May | 17° / 15° | 40 | 5.4 | 14.1 | 6.1 |
| Jun | 18° / 17° | 8 | 1.8 | 14.7 | 7.5 |
| Jul | 19° / 18° | 2 | 0.6 | 14.4 | 8.2 |
| Aug | 19° / 18° | 4 | 0.8 | 13.5 | 8.2 |
| Sep | 19° / 18° | 27 | 3.8 | 12.3 | 7.5 |
| Oct | 19° / 17° | 80 | 9 | 11 | 6.3 |
| Nov | 17° / 15° | 95 | 10.6 | 9.9 | 5.3 |
| Dec | 15° / 13° | 89 | 10.6 | 9.3 | 4.6 |
Cloud cover in Summer
The sky is clear or mostly clear about 76% of the time across summer.
Chance of precipitation in Summer
Estoril gets around 13 mm of rain over 3 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 25 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 30 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 7.2 kWh/m².
Hazard calendar for Estoril
None of Estoril's seasonal hazards peak in summer. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Estoril's rainy season runs October–April, when most of the year's rain falls.
Is summer a good time to visit Estoril?
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 Estoril for general sightseeing.
What to pack for Estoril in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Estoril sees daytime highs around 19°C and nights near 18°C. Pack sun protection. Worth having: a windbreaker.
Sea temperature near Estoril in Summer
The nearest coast averages about 18°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 19°C and coldest in February near 15°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 15 | 15 | 15 | 15 | 16 | 18 | 18 | 19 | 19 | 18 | 17 | 16 |
| Comfort | Cool | Bracing | Bracing | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Cool |
| Feb | 15 | Bracing |
| Mar | 15 | Bracing |
| Apr | 15 | Cool |
| May | 16 | Cool |
| Jun | 18 | Cool |
| Jul | 18 | Cool |
| Aug | 19 | Cool |
| Sep | 19 | Cool |
| Oct | 18 | Cool |
| Nov | 17 | Cool |
| Dec | 16 | Cool |
UV index in Estoril 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 Estoril peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 6 | 8 | 7 | 9 | 9 | 9 | 6 | 5 | 3 | 2 |
| Level | Low | Moderate | High | Very high | Very high | Very high | Very high | Very high | High | High | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 6 | High |
| Apr | 8 | Very high |
| May | 7 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 9 | Very high |
| Sep | 6 | High |
| Oct | 5 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Where is Estoril?
Estoril sits at 38.7°N, 9.4°W, 24 m above sea level, in Portugal. The nearest listed city is Monte Estoril, 1.0 km away.
Topography around Estoril
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Estoril.
Within 3 km, the terrain around Estoril has only modest variations in elevation — a maximum elevation change of 145 m around an average of 42 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 513 m; within 80 km, large variations in elevation — a maximum elevation change of 651 m.
The land around Estoril is covered by artificial surfaces (38%) and water (31%) within 3 km, water (56%) within 16 km, and water (49%) and grassland (24%) 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 Estoril (38.7057°, -9.3977°, elevation 24 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.