Leça do Bailio in Fall
In fall (September, October and November), Leça do Bailio sees average daytime highs around 19°C and overnight lows near 15°C, with 358 mm of rain over about 32 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 22°C in early September to 14°C by late November. The sky is clear or mostly clear about 41% of the time across fall, and the air most often feels dry.
Fall is Leça do Bailio's 2nd-best season to visit on our travel score. For the whole year in context, see Leça do Bailio's year-round climate.
- Avg daytime high
- 19°C
- 2nd-warmest season
- Avg overnight low
- 15°C
- Rainfall
- 358 mm
- 32 wet days
- Avg wind
- 15 km/h
- Travel score
- 6.0
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Leça do Bailio in Fall
Over the season highs ease from about 22°C in early September to 14°C by late November.
A typical fall day in Leça do Bailio reaches about 19°C and drops to 15°C overnight. The warmest of the three months is September, the coolest November.
Leça do Bailio weather by month
How the three fall months (September, October and November) 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° / 9° | 133 | 12.3 | 9.4 | 3.5 |
| Feb | 14° / 9° | 91 | 9.3 | 10.3 | 3.9 |
| Mar | 15° / 11° | 106 | 10.2 | 11.7 | 4.7 |
| Apr | 16° / 12° | 107 | 11.2 | 13.1 | 5.1 |
| May | 18° / 14° | 90 | 10.4 | 14.3 | 6.1 |
| Jun | 21° / 16° | 31 | 5.5 | 14.9 | 7.4 |
| Jul | 22° / 18° | 18 | 3.4 | 14.7 | 8.4 |
| Aug | 23° / 18° | 22 | 3.8 | 13.6 | 8.4 |
| Sep | 22° / 17° | 54 | 6.3 | 12.3 | 7.4 |
| Oct | 19° / 15° | 148 | 12.5 | 10.9 | 5.9 |
| Nov | 16° / 12° | 156 | 13.3 | 9.7 | 4.6 |
| Dec | 14° / 10° | 151 | 12.8 | 9.1 | 3.8 |
Cloud cover in Fall
The sky is clear or mostly clear about 41% of the time across fall.
Chance of precipitation in Fall
Leça do Bailio gets around 358 mm of rain over 32 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 15 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 hours in early September to 9 h 18 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 3.4 kWh/m².
Hazard calendar for Leça do Bailio
In fall, Leça do Bailio overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Leça do Bailio's rainy season runs October–May, when most of the year's rain falls.
Is fall a good time to visit Leça do Bailio?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Leça do Bailio for sightseeing.
What to pack for Leça do Bailio in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Leça do Bailio sees daytime highs around 19°C and nights near 15°C. Worth packing: a warm layer, rain gear and sun protection. About 32 days see rain.
Sea temperature near Leça do Bailio in Fall
The nearest coast averages about 17°C across fall — 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 17°C and coldest in February near 13°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) | 14 | 13 | 14 | 14 | 16 | 17 | 17 | 17 | 17 | 17 | 16 | 14 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 14 | Bracing |
| Feb | 13 | Bracing |
| Mar | 14 | Bracing |
| Apr | 14 | Bracing |
| May | 16 | Cool |
| Jun | 17 | Cool |
| Jul | 17 | Cool |
| Aug | 17 | Cool |
| Sep | 17 | Cool |
| Oct | 17 | Cool |
| Nov | 16 | Cool |
| Dec | 14 | Bracing |
UV index in Leça do Bailio in Fall
Clear-sky midday UV across fall averages around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Leça do Bailio peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 | 5 | 6 | 7 | 9 | 9 | 8 | 5 | 4 | 2 | 2 |
| 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 | 6 | High |
| May | 7 | High |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 5 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Moderate |
| Dec | 2 | Low |
Air quality in Leça do Bailio in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Leça do Bailio is worst in September — around 19 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (November, 7 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) | 8 | 9 | 12 | 11 | 9 | 9 | 8 | 16 | 19 | 13 | 7 | 7 |
| Level | Good | Good | Moderate | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 9 | Good |
| Mar | 12 | Moderate |
| Apr | 11 | Good |
| May | 9 | Good |
| Jun | 9 | Good |
| Jul | 8 | Good |
| Aug | 16 | Moderate |
| Sep | 19 | Moderate |
| Oct | 13 | Moderate |
| Nov | 7 | Good |
| Dec | 7 | Good |
Where is Leça do Bailio?
Leça do Bailio sits at 41.2°N, 8.6°W, 90 m above sea level, in Portugal. The nearest listed city is São Tiago de Custoias, 1.0 km away.
Topography around Leça do Bailio
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Leça do Bailio.
Within 3 km, the terrain around Leça do Bailio has only modest variations in elevation — a maximum elevation change of 105 m around an average of 69 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 377 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,466 m.
The land around Leça do Bailio is covered by artificial surfaces (50%) and trees (26%) within 3 km, trees (29%), water (28%) and artificial surfaces (24%) within 16 km, and trees (41%), water (27%) 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 Leça do Bailio (41.212°, -8.6342°, elevation 90 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.