Ílhavo in Winter
In winter (December, January and February), Ílhavo sees average daytime highs around 14°C and overnight lows near 9°C, with 331 mm of rain over about 32 wet days across the season. It is the coldest season of the year and the wettest season of the year.
Across winter, daytime highs hold fairly steady around 14°C. The sky is clear or mostly clear about 37% of the time across winter, and the air most often feels dry.
Winter is Ílhavo's weakest season of the year to visit on our travel score. For the whole year in context, see Ílhavo's year-round climate.
- Avg daytime high
- 14°C
- coldest season of the year
- Avg overnight low
- 9°C
- Rainfall
- 331 mm
- 32 wet days
- Avg wind
- 15 km/h
- Travel score
- 4.2
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Ílhavo in Winter
Across winter, daytime highs hold fairly steady around 14°C.
A typical winter day in Ílhavo reaches about 14°C and drops to 9°C overnight. The warmest of the three months is February, the coolest January.
Ílhavo 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 | 14° / 8° | 119 | 11.6 | 9.4 | 3.9 |
| Feb | 15° / 9° | 83 | 9 | 10.4 | 4.4 |
| Mar | 17° / 10° | 88 | 9.7 | 11.7 | 5.4 |
| Apr | 18° / 11° | 92 | 10.7 | 13 | 5.7 |
| May | 20° / 13° | 72 | 9 | 14.2 | 6.6 |
| Jun | 22° / 16° | 24 | 4.7 | 14.8 | 7.9 |
| Jul | 24° / 17° | 10 | 2.2 | 14.6 | 8.9 |
| Aug | 24° / 17° | 15 | 3.1 | 13.6 | 8.7 |
| Sep | 23° / 16° | 48 | 5.6 | 12.3 | 7.9 |
| Oct | 20° / 14° | 132 | 11.4 | 10.9 | 6.2 |
| Nov | 16° / 11° | 133 | 12.5 | 9.7 | 5.0 |
| Dec | 14° / 9° | 129 | 11.2 | 9.1 | 4.2 |
Cloud cover in Winter
The sky is clear or mostly clear about 37% of the time across winter.
Chance of precipitation in Winter
Ílhavo gets around 331 mm of rain over 32 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 15 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 2.3 kWh/m².
Hazard calendar for Ílhavo
In winter, Ílhavo overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Ílhavo's rainy season runs October–May, when most of the year's rain falls.
Is winter a good time to visit Ílhavo?
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 reasonable time to visit Ílhavo for sightseeing.
What to pack for Ílhavo in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Ílhavo sees daytime highs around 14°C and nights near 9°C. Worth packing: a warm layer and rain gear. About 32 days see rain.
Sea temperature near Ílhavo in Winter
The nearest coast averages about 14°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 17 km away) is warmest in August at about 18°C and coldest in February near 14°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 | 14 | 14 | 15 | 16 | 17 | 18 | 18 | 18 | 17 | 16 | 15 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 14 | Bracing |
| Feb | 14 | Bracing |
| Mar | 14 | Bracing |
| Apr | 15 | Bracing |
| May | 16 | Cool |
| Jun | 17 | Cool |
| Jul | 18 | Cool |
| Aug | 18 | Cool |
| Sep | 18 | Cool |
| Oct | 17 | Cool |
| Nov | 16 | Cool |
| Dec | 15 | Bracing |
UV index in Ílhavo 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 Ílhavo peaks around July 11 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 Ílhavo 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 Ílhavo is worst in October — around 19 µg/m³ PM2.5 (moderate), about 2.8× 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) | 7 | 9 | 11 | 10 | 8 | 12 | 8 | 14 | 17 | 19 | 7 | 7 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 9 | Good |
| Mar | 11 | Good |
| Apr | 10 | Good |
| May | 8 | Good |
| Jun | 12 | Good |
| Jul | 8 | Good |
| Aug | 14 | Moderate |
| Sep | 17 | Moderate |
| Oct | 19 | Moderate |
| Nov | 7 | Good |
| Dec | 7 | Good |
Where is Ílhavo?
Ílhavo sits at 40.6°N, 8.7°W, 13 m above sea level, in Portugal. The nearest listed city is Vilar, 4.0 km away.
Topography around Ílhavo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ílhavo.
Within 3 km, the terrain around Ílhavo has only modest variations in elevation — a maximum elevation change of 55 m around an average of 14 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 126 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,365 m.
The land around Ílhavo is covered by grassland (23%), trees (21%) and artificial surfaces (20%) within 3 km, water (31%) and trees (30%) within 16 km, and trees (46%) and water (27%) 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 Ílhavo (40.6019°, -8.6702°, elevation 13 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.