Viseu weather in July

In July, Viseu sees average daytime highs of 27°C and overnight lows near 15°C, with 19 mm of rain across 3.7 wet days and about 14.6 hours of daylight. It is the 2nd-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 25°C in the first days to 27°C by the end. The sky is clear or mostly clear about 70% of the time in July, and the air most often feels comfortable.

Daylight stretches from about 14 h 54 min at the start of July to 14 h 12 min by month's end. Set against the rest of the year, July is Viseu's 1st-clearest and 10th-windiest month. For the whole year in context, see Viseu's year-round climate.

Daytime high
27°
2nd warmest
Overnight low
15°
11th coldest
Rainfall
19 mm
3.7 wet days
Daylight
14 h 36 min
5:18 AM – 7:57 PM
Cloud cover
26%
1st clearest
Wind
8 km/h
10th windiest
Solar energy
7.25 kWh/m²
Travel score
8.2
out of 10

Viseu is city seat of Viseu municipality.

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 25°C in the first days to 27°C by the end.

A typical July day in Viseu reaches about 27°C in the afternoon and slips back to 15°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 32°C. Set against its neighbours, July runs about 3°C warmer than June and on par with August.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12514
22514
32514
42514
52514
62614
72614
82614
92614
102614
112615
122615
132715
142715
152715
162715
172715
182715
192715
202715
212715
222715
232715
242715
252715
262715
272715
282715
292715
302715
312715

Viseu weather by month

How July compares with the rest of the year at a glance. July is the 2nd-warmest and 12th-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 July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 70% of the time in July, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of July, with mostly cloudy or overcast conditions the remaining 18%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17426
27426
37426
47624
57624
67723
77822
87921
97921
108119
118119
128119
138218
148317
158416
168416
178416
188416
198416
208416
218416
228515
238515
248515
258515
268515
278515
288515
298515
308515
318515

Chance of precipitation in July

Any precipitation

Viseu gets around 19 mm of rain over 3.7 wet days in July, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 12% and peaks near 16% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
116
216
316
415
515
615
714
814
913
1012
1112
1212
1311
1411
1511
1610
1710
1810
1910
2010
2110
2210
2310
2410
2510
2610
2710
2810
2911
3011
3111

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the comfortable band about 51% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
148448
247448
347459
446459
545469
6444610
7434710
8424711
9414711
10414812
11404812
12394913
13384913
14375013
15365014
16355114
17355114
18345214
19335314
20335314
21325414
22325414
23315514
24315514
25305614
26305614
27305614
28305515
29315415
30315415
31325315

Wind in July

Winds average 8 km/h in July.

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

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 54 min at the start of July to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over July. Sunrise moves from 5:09 AM to 5:31 AM, and sunset from 8:01 PM to 7:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.95:098:01
214.95:098:01
314.95:108:01
414.85:108:01
514.85:118:01
614.85:118:01
714.85:128:00
814.85:128:00
914.85:138:00
1014.85:147:59
1114.75:147:59
1214.75:157:59
1314.75:167:58
1414.75:167:58
1514.75:177:57
1614.65:187:57
1714.65:197:56
1814.65:207:55
1914.65:207:55
2014.55:217:54
2114.55:227:53
2214.55:237:53
2314.55:247:52
2414.45:257:51
2514.45:257:50
2614.45:267:49
2714.45:277:48
2814.35:287:47
2914.35:297:46
3014.35:307:45
3114.25:317:44

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 7.25 kWh/m² — the sunniest month for solar.

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 — July's 7.25 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.2Intense
27.2Intense
37.2Intense
47.2Intense
57.2Intense
67.2Intense
77.2Intense
87.3Intense
97.3Intense
107.3Intense
117.3Intense
127.3Intense
137.3Intense
147.3Intense
157.3Intense
167.3Intense
177.3Intense
187.3Intense
197.3Intense
207.3Intense
217.3Intense
227.3Intense
237.2Intense
247.2Intense
257.2Intense
267.2Intense
277.2Intense
287.1Intense
297.1Intense
307.1Intense
317.1Intense
Planning a trip in July

Hazard calendar for Viseu

In seasonPeak

None of Viseu's seasonal hazards are active in July. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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 July a good time to visit Viseu?

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

8.2
Sightseeing
1st-best month of the year
8.0
Beach & pool
1st-best month of the year

July is one of the better times to visit Viseu for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Viseu in July

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

In July, Viseu sees daytime highs around 27°C and nights near 15°C. Pack sun protection. Worth having: light clothes. About 4 days see rain.

sun protectionlight clothes

UV index in Viseu in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 9 (very high — sun protection essential). 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 July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July 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
July 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).