Custoias in Winter
In winter (December, January and February), Custoias sees average daytime highs around 11°C and overnight lows near 3°C, with 173 mm of precipitation over about 24 wet days across the season. It is the coldest season of the year and the 2nd-wettest season.
Over the season highs climb from about 11°C in early December to 13°C by late February. The sky is clear or mostly clear about 28% of the time across winter, and the air most often feels dry.
Winter is Custoias's weakest season of the year to visit on our travel score. For the whole year in context, see Custoias's year-round climate.
- Avg daytime high
- 11°C
- coldest season of the year
- Avg overnight low
- 3°C
- Precipitation
- 173 mm
- 24 wet days
- Avg wind
- 8 km/h
- Travel score
- 2.8
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Custoias in Winter
Over the season highs climb from about 11°C in early December to 13°C by late February.
A typical winter day in Custoias reaches about 11°C and drops to 3°C overnight. The warmest of the three months is February, the coolest January.
Custoias weather by month
How the three winter months (December, January and February) 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 | 10° / 3° | 62 | 8.7 | 9.4 | 2.3 |
| Feb | 12° / 3° | 43 | 6.6 | 10.4 | 3.5 |
| Mar | 15° / 5° | 49 | 7.9 | 11.7 | 4.9 |
| Apr | 17° / 7° | 54 | 9.8 | 13.1 | 5.6 |
| May | 21° / 10° | 49 | 9.2 | 14.3 | 6.7 |
| Jun | 26° / 13° | 20 | 4.8 | 14.9 | 7.8 |
| Jul | 29° / 15° | 12 | 2.6 | 14.7 | 7.1 |
| Aug | 29° / 15° | 13 | 3.4 | 13.6 | 7.1 |
| Sep | 25° / 13° | 34 | 4.6 | 12.3 | 7.9 |
| Oct | 19° / 10° | 83 | 9.3 | 10.9 | 6.3 |
| Nov | 13° / 6° | 69 | 9.2 | 9.7 | 3.9 |
| Dec | 10° / 4° | 68 | 8.3 | 9.1 | 2.5 |
Cloud cover in Winter
The sky is clear or mostly clear about 28% of the time across winter.
Chance of precipitation in Winter
Custoias gets around 173 mm of rain and snow over 24 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 8 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 9 h 18 min in early December to 10 h 54 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 2.1 kWh/m².
Is winter a good time to visit Custoias?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a weaker month for outdoor sightseeing in Custoias.
What to pack for Custoias in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Custoias sees daytime highs around 11°C and nights near 3°C. Pack a warm layer. Worth having: rain gear. About 24 days see rain.
UV index in Custoias in Winter
Clear-sky midday UV across winter averages around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Custoias peaks around July 12 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 | 9 | 6 | 5 | 2 | 2 |
| Level | Low | Moderate | High | High | High | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | High |
| Apr | 6 | High |
| May | 7 | High |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 9 | Very high |
| Sep | 6 | High |
| Oct | 5 | Moderate |
| Nov | 2 | Moderate |
| Dec | 2 | Low |
Air quality in Custoias in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Custoias is worst in August — around 22 µg/m³ PM2.5 (moderate), about 3.2× 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) | 10 | 10 | 13 | 11 | 8 | 9 | 12 | 22 | 18 | 13 | 7 | 7 |
| Level | Good | Good | Moderate | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 10 | Good |
| Mar | 13 | Moderate |
| Apr | 11 | Good |
| May | 8 | Good |
| Jun | 9 | Good |
| Jul | 12 | Good |
| Aug | 22 | Moderate |
| Sep | 18 | Moderate |
| Oct | 13 | Moderate |
| Nov | 7 | Good |
| Dec | 7 | Good |
Where is Custoias?
Custoias sits at 41.1°N, 7.3°W, 569 m above sea level, in Portugal. The nearest listed city is Vila Nova de Foz Côa, 15 km away.
Topography around Custoias
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Custoias.
Within 3 km, the terrain around Custoias has large variations in elevation — a maximum elevation change of 671 m around an average of 479 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 921 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,573 m.
The land around Custoias is covered by shrubs (40%), grassland (30%) and trees (29%) within 3 km, grassland (44%), trees (26%) and shrubs (23%) within 16 km, and grassland (58%) and trees (30%) 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 Custoias (41.1053°, -7.321°, elevation 569 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.