Viseu weather in October

In October, Viseu sees average daytime highs of 19°C and overnight lows near 10°C, with 168 mm of rain across 12.2 wet days and about 10.9 hours of daylight. It is the 6th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 17°C by the end. The sky is clear or mostly clear about 32% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 18 min by month's end. Set against the rest of the year, October is Viseu's 7th-clearest and 7th-windiest month. For the whole year in context, see Viseu's year-round climate.

Daytime high
19°
6th warmest
Overnight low
10°
8th coldest
Rainfall
168 mm
12.2 wet days
Daylight
10 h 54 min
6:50 AM – 5:44 PM
Cloud cover
58%
7th clearest
Wind
9 km/h
7th windiest
Solar energy
3.17 kWh/m²
Travel score
5.7
out of 10

Viseu is city seat of Viseu municipality.

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 21°C in the first days to 17°C by the end.

A typical October day in Viseu reaches about 19°C in the afternoon and slips back to 10°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 24°C. Set against its neighbours, October runs about 5°C cooler than September and about 5°C warmer than November.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12112
22112
32112
42111
52111
62111
72011
82011
92011
102011
112011
121911
131911
141911
151911
161911
171810
181810
191810
201810
211810
221810
231710
241710
251710
261710
271710
28179
29179
30169
31169

Viseu weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / 15211.60.59.42.5
Feb12° / 1029.30.310.43.3
Mar15° / 11510.6011.74.5
Apr17° / 11812.8013.14.9
May20° / 10°9811.6014.26.1
Jun23° / 13°406.2014.97.7
Jul27° / 15°193.7014.68.2
Aug27° / 15°264.6013.68.0
Sep24° / 13°667.1012.37.6
Oct19° / 10°16812.2010.95.7
Nov14° / 15012.70.19.73.7
Dec11° / 16011.60.19.12.7

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 55%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35743
45644
55545
65545
75446
85347
95248
105149
114951
124852
134753
144555
154456
164357
174258
184258
194159
204060
213961
223961
233961
243862
253664
263763
273763
283664
293664
303565
313664

Chance of precipitation in October

Any precipitation

Viseu gets around 168 mm of rain over 12.2 wet days in October, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 40% and peaks near 46% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
128
228
329
430
531
632
733
834
935
1036
1138
1239
1341
1442
1543
1644
1745
1845
1946
2046
2146
2246
2346
2446
2546
2646
2746
2846
2946
3045
3145

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 79% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
174233
274233
375223
474224
574224
675214
776213
877203
977203
1077203
1178193
1278193
1378193
1478193
1578193
1679192
1779192
1879192
1979192
2079192
2180191
2280191
2380191
2481181
2581181
2681181
2781181
2882171
2983161
3083161
3184151

Wind in October

Winds average 9 km/h in October.

Across October, daily wind ranges from about 8 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over October. Sunrise moves from 6:33 AM to 7:07 AM, and sunset from 6:08 PM to 5:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:336:08
211.56:346:06
311.56:366:04
411.46:376:03
511.46:386:01
611.36:395:59
711.36:405:58
811.36:415:56
911.26:425:55
1011.26:435:53
1111.16:445:51
1211.16:455:50
1311.06:465:48
1411.06:475:47
1510.96:495:45
1610.96:505:44
1710.96:515:42
1810.86:525:41
1910.86:535:39
2010.76:545:38
2110.76:555:36
2210.66:575:35
2310.66:585:34
2410.66:595:32
2510.57:005:31
2610.57:015:29
2710.47:025:28
2810.47:045:27
2910.37:055:26
3010.37:065:24
3110.37:075:23

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.17 kWh/m².

For context, solar energy here swings from a low near 1.66 kWh/m² to a high of 7.25 kWh/m² in July across the year — October's 3.17 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.0Bright
24.0Moderate
33.9Moderate
43.9Moderate
53.8Moderate
63.8Moderate
73.7Moderate
83.6Moderate
93.6Moderate
103.5Moderate
113.4Moderate
123.4Moderate
133.3Moderate
143.2Moderate
153.1Moderate
163.1Moderate
173.0Moderate
183.0Moderate
192.9Moderate
202.9Moderate
212.8Moderate
222.8Moderate
232.7Moderate
242.7Moderate
252.6Moderate
262.6Moderate
272.6Moderate
282.5Moderate
292.5Moderate
302.5Moderate
312.4Moderate
Planning a trip in October

Hazard calendar for Viseu

In seasonPeak

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

Viseu'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 October a good time to visit Viseu?

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

5.7
Sightseeing
6th-best month of the year
2.4
Beach & pool
6th-best month of the year

October is a reasonable time to visit Viseu for sightseeing.

What to pack for Viseu in October

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

In October, Viseu sees daytime highs around 19°C and nights near 10°C. Worth packing: rain gear. About 12 days see rain.

rain gear

UV index in Viseu in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Viseu peaks around July 13 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 13UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5High
Apr7High
May7High
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct5Moderate
Nov2Moderate
Dec2Low

Air quality in Viseu in October

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Viseu is worst in October — around 29 µg/m³ PM2.5 (moderate), about 3.9× the cleanest month (November, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateModerateGoodOct 1228 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar13Moderate
Apr11Good
May8Good
Jun21Moderate
Jul9Good
Aug24Moderate
Sep23Moderate
Oct29Moderate
Nov7Good
Dec7Good
Location & terrain

Where is Viseu?

Viseu sits at 40.7°N, 7.9°W, 469 m above sea level, in Portugal. The nearest listed city is Arouca, 41 km away.

Topography around Viseu

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

Within 3 km, the terrain around Viseu has only modest variations in elevation — a maximum elevation change of 165 m around an average of 466 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 814 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,993 m.

The land around Viseu is covered by trees (45%) and artificial surfaces (35%) within 3 km, trees (56%) and grassland (36%) within 16 km, and trees (48%) and grassland (41%) within 80 km.

3 km
165 m
16 km
814 m
80 km
1,993 m
treesshrubsgrasslandcroplandartificial surfaceswater
October weather nearby: Arouca 41 km · Covilhã 54 km · São João da Madeira 56 km · Guarda 56 km · Baião 57 km · Sequeira 59 km · Feira 61 km · Vilar 61 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 Viseu (40.6617°, -7.909°, elevation 469 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. 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).