Aveiro weather in January

In January, Aveiro sees average daytime highs of 14°C and overnight lows near 8°C, with 128 mm of rain across 12.1 wet days and about 9.4 hours of daylight. It is the 12th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 14°C through the month. The sky is clear or mostly clear about 36% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 06 min at the start of January to 9 h 48 min by month's end. Set against the rest of the year, January is Aveiro's 10th-clearest and 3rd-windiest month. For the whole year in context, see Aveiro's year-round climate.

Daytime high
14°
12th warmest
Overnight low
1st coldest
Rainfall
128 mm
12.1 wet days
Daylight
9 h 24 min
8:02 AM – 5:26 PM
Cloud cover
54%
10th clearest
Wind
16 km/h
3rd windiest
Solar energy
2.03 kWh/m²
Travel score
3.8
out of 10

Aveiro is city seat of Aveiro municipality.

Air quality
Good
PM10 22.4 µg/m³ · 2019

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 14°C through the month.

A typical January day in Aveiro reaches about 14°C in the afternoon and slips back to 8°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 16°C. Set against its neighbours, January runs on par with December and about 1°C cooler than February.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1149
2149
3149
4149
5149
6149
7149
8149
9149
10149
11138
12138
13138
14138
15138
16138
17138
18138
19138
20138
21138
22148
23148
24148
25148
26148
27148
28148
29148
30148
31148

Aveiro weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan14° / 12812.19.43.8
Feb14° / 889.310.44.4
Mar16° / 10°959.911.75.3
Apr17° / 11°9810.913.15.7
May20° / 13°799.614.26.5
Jun22° / 16°26514.97.8
Jul24° / 17°122.714.68.8
Aug24° / 17°173.413.68.7
Sep23° / 16°51612.37.8
Oct20° / 14°1431210.96.1
Nov16° / 11°14512.79.74.9
Dec14° / 14112.29.14.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24753
34852
44753
54753
64753
74852
84852
94852
104951
114951
124951
134951
145050
155149
165149
175149
185248
195248
205248
215248
225446
235446
245446
255347
265446
275446
285446
295446
305347
315347

Chance of precipitation in January

Any precipitation

Aveiro gets around 128 mm of rain over 12.1 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 44% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
144
244
344
444
544
643
743
842
942
1042
1141
1241
1341
1440
1540
1639
1739
1838
1938
2037
2137
2237
2336
2436
2536
2635
2735
2835
2935
3035
3135

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the dry band about 96% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1937
2937
3937
4937
5937
6946
7946
8946
9955
10955
11964
12964
13964
14973
15973
16973
17973
18973
19973
20973
21973
22973
23973
24973
25964
26964
27964
28964
29964
30964
31964

Wind in January

Winds average 16 km/h in January.

Across January, daily wind ranges from about 16 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 06 min at the start of January to 9 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over January. Sunrise moves from 8:04 AM to 7:53 AM, and sunset from 5:12 PM to 5:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.18:045:12
29.18:045:13
39.28:045:13
49.28:045:14
59.28:045:15
69.28:045:16
79.28:045:17
89.28:045:18
99.28:045:19
109.38:045:20
119.38:035:21
129.38:035:22
139.38:035:23
149.38:035:24
159.48:025:25
169.48:025:26
179.48:025:27
189.48:015:28
199.58:015:29
209.58:005:30
219.58:005:31
229.57:595:32
239.67:595:33
249.67:585:35
259.67:585:36
269.77:575:37
279.77:565:38
289.77:555:39
299.87:555:40
309.87:545:42
319.87:535:43

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.03 kWh/m².

For context, solar energy here swings from a low near 1.76 kWh/m² to a high of 7.32 kWh/m² in July across the year — January's 2.03 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
11.8Dim
21.8Dim
31.8Dim
41.8Dim
51.8Dim
61.8Dim
71.8Dim
81.8Dim
91.9Dim
101.9Dim
111.9Dim
121.9Dim
131.9Dim
142.0Dim
152.0Dim
162.0Moderate
172.0Moderate
182.1Moderate
192.1Moderate
202.1Moderate
212.2Moderate
222.2Moderate
232.2Moderate
242.3Moderate
252.3Moderate
262.3Moderate
272.4Moderate
282.4Moderate
292.4Moderate
302.4Moderate
312.5Moderate
Planning a trip in January

Hazard calendar for Aveiro

In seasonPeak

In January, Aveiro sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Aveiro's rainy season runs October–May, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Aveiro?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.8
Sightseeing
12th-best month of the year
0.0
Beach & pool
12th-best month of the year

January is a weaker month for outdoor sightseeing in Aveiro.

What to pack for Aveiro in January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Aveiro sees daytime highs around 14°C and nights near 8°C. Worth packing: a warm layer and rain gear. About 12 days see rain.

a warm layerrain gear

Sea temperature near Aveiro in January

The nearest coast averages about 14°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 19 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.

12°14°16°18°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr15Bracing
May16Cool
Jun17Cool
Jul18Cool
Aug18Cool
Sep18Cool
Oct17Cool
Nov16Cool
Dec15Bracing

UV index in Aveiro in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Aveiro 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 11UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7High
Jun9Very high
Jul9Very high
Aug8Very high
Sep5High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Aveiro in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Aveiro 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).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodOct 1119 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb9Good
Mar11Good
Apr10Good
May8Good
Jun12Good
Jul8Good
Aug14Moderate
Sep17Moderate
Oct19Moderate
Nov7Good
Dec7Good
Location & terrain

Where is Aveiro?

Aveiro sits at 40.6°N, 8.6°W, 19 m above sea level, in Portugal. The nearest listed city is Vilar, 2.0 km away.

Topography around Aveiro

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Aveiro.

Within 3 km, the terrain around Aveiro has only modest variations in elevation — a maximum elevation change of 55 m around an average of 12 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 179 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,365 m.

The land around Aveiro is covered by water (37%) and artificial surfaces (31%) within 3 km, trees (31%) and water (29%) within 16 km, and trees (45%), water (26%) and grassland (20%) within 80 km.

3 km
55 m
16 km
179 m
80 km
1,365 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
January weather nearby: Vilar 2.0 km · Ílhavo 5.0 km · Ovar 24 km · São João da Madeira 31 km · Feira 32 km · Espinho 40 km · Arouca 46 km · Eiras 48 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
Catholic 68%not applicable 13%no religion 12%no response 2%

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 Aveiro (40.6457°, -8.6464°, elevation 19 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).