Rio de Mouro in Summer
In summer (June, July and August), Rio de Mouro sees average daytime highs around 23°C and overnight lows near 17°C, with 16 mm of rain over about 4 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 76% of the time across summer, and the air most often feels comfortable.
Summer is Rio de Mouro's best season of the year to visit on our travel score. For the whole year in context, see Rio de Mouro's year-round climate.
- Avg daytime high
- 23°C
- warmest season of the year
- Avg overnight low
- 17°C
- Rainfall
- 16 mm
- 4 wet days
- Avg wind
- 19 km/h
- Travel score
- 9.0
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Rio de Mouro 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 Rio de Mouro reaches about 23°C and drops to 17°C overnight. The warmest of the three months is August, the coolest June.
Rio de Mouro 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° / 10° | 68 | 8.9 | 9.6 | 4.2 |
| Feb | 15° / 10° | 51 | 7.5 | 10.5 | 4.6 |
| Mar | 16° / 11° | 53 | 8.1 | 11.7 | 5.5 |
| Apr | 17° / 12° | 51 | 8.4 | 13 | 6.0 |
| May | 19° / 14° | 42 | 5.9 | 14.1 | 7.1 |
| Jun | 22° / 16° | 10 | 2.1 | 14.7 | 8.4 |
| Jul | 24° / 18° | 2 | 0.6 | 14.4 | 9.3 |
| Aug | 24° / 18° | 4 | 1 | 13.5 | 9.2 |
| Sep | 23° / 17° | 29 | 4.1 | 12.3 | 8.3 |
| Oct | 20° / 16° | 77 | 8.9 | 11 | 6.7 |
| Nov | 17° / 13° | 82 | 10.2 | 9.9 | 5.5 |
| Dec | 15° / 11° | 79 | 9.4 | 9.3 | 4.5 |
Cloud cover in Summer
The sky is clear or mostly clear about 76% of the time across summer.
Chance of precipitation in Summer
Rio de Mouro gets around 16 mm of rain over 4 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 19 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 7.3 kWh/m².
Is summer a good time to visit Rio de Mouro?
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 Rio de Mouro for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Rio de Mouro in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Rio de Mouro sees daytime highs around 23°C and nights near 17°C. Pack sun protection. Worth having: light clothes and a windbreaker.
Sea temperature near Rio de Mouro 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 at the nearest coast (about 16 km away) 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 Rio de Mouro 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 Rio de Mouro 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 Rio de Mouro?
Rio de Mouro sits at 38.8°N, 9.3°W, 121 m above sea level, in Portugal. The nearest listed city is Cacém, 3.0 km away.
Topography around Rio de Mouro
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rio de Mouro.
Within 3 km, the terrain around Rio de Mouro has only modest variations in elevation — a maximum elevation change of 154 m around an average of 149 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 514 m; within 80 km, large variations in elevation — a maximum elevation change of 656 m.
The land around Rio de Mouro is covered by artificial surfaces (46%), grassland (28%) and trees (23%) within 3 km, grassland (26%), trees (25%) and water (23%) within 16 km, and water (46%) and grassland (25%) 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 Rio de Mouro (38.7661°, -9.328°, elevation 121 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.