Viana do Castelo in august: average Weather, Temperature and Climate
Weather in Viana do Castelo in august 2025
The weather in Viana do Castelo in august comes from statistical datas on the last years. You can view the weather statistics the entire month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout august
perfect weather UV index: 6
Weather at 6am
65°F
Clear/Sunny
62% of time
17%
9%
6%
Weather at 12pm
76°F
Clear/Sunny
71% of time
18%
5%
4%
Weather at 6pm
72°F
Clear/Sunny
73% of time
16%
5%
5%
Weather at 3am
65°F
64%
16%
10%
5%
Evolution of daily average temperature and precipitation in Viana do Castelo in august
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Viana do Castelo in august.
The climate of Viana do Castelo in august is perfect
The climate in august in Viana do Castelo is relatively dry (with 1.3in of precipitation over 2 days). It should be noted a worsening from the previous month since in july there is an average of 1.2in of rainfall over 1 days.
The climate comfortable in this location the month of august. The high seasonal norm is 76°F. In the morning the temperature drops to 65°F. Thus, the mean temperature average in august in Viana do Castelo is 70°F. Note that seasonal normals are in contrast with those observed in Viana do Castelo in the month of august with a maximum record of 88°F in 2018 and a minimum record of 56°F in 2011.
In august in Viana do Castelo, the days on average last 13:51. The sun rises at 05:44 and sets at 19:35.
With a perfect climate, this month is recommended to go in that area.
Seasonal average climate and temperature of Viana do Castelo in august
Check below seasonal norms These statistics are set from the weather statements earlier years of august.
| August | |||||
| Outside temperature | |||||
| Average temperature | 70°F | ||||
| Highest temperature | 76°F | ||||
| Lowest temperature | 65°F | ||||
| Highest record temperature | 88°F (2018) | ||||
| Lowest record temperature | 56°F (2011) | ||||
| Number of days at +86°F | 1 day(s) (3%) | ||||
| Number of days at +65°F | 31 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 65°F | ||||
| Lowest sea temperature | 62°F | ||||
| Highest sea temperature | 68°F | ||||
| Wind | |||||
| Wind speed | 19km/h | ||||
| Wind temperature | 65°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 1.3in | ||||
| Number of days with rainfall | 2 day(s) (6%) | ||||
| Record daily rainfall | 2.2in (2012) | ||||
| Other climate data | |||||
| Humidity | 85% | ||||
| Visibility | 9.43km | ||||
| Cloud cover | 19% | ||||
| UV index | 6 | ||||
| Daily sunshine hours | 14 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:44 | ||||
| Time of sunset | 19:35 | ||||
| Length of day | 13:51 | ||||
| Our opinion about the weather in august | |||||
| Our opinion at whereandwhen.net | perfect | ||||
How was the weather last august?
Here is the day by day recorded weather in Viana do Castelo in august 2024:
63°F to 74°F
61°F to 74°F
61°F to 77°F
65°F to 77°F
61°F to 76°F
63°F to 74°F
63°F to 77°F
63°F to 77°F
63°F to 83°F
67°F to 79°F
63°F to 74°F
61°F to 74°F
59°F to 70°F
58°F to 74°F
61°F to 77°F
65°F to 81°F
65°F to 77°F
63°F to 77°F
61°F to 74°F
63°F to 76°F
61°F to 77°F
61°F to 72°F
63°F to 76°F
63°F to 70°F
54°F to 76°F
59°F to 76°F
59°F to 72°F
56°F to 72°F
61°F to 76°F
61°F to 72°F
63°F to 72°F
Map: other cities in Portugal in august
Cities near Viana do Castelo:
| Chafé in august | perfect weather |
| Vila Praia de Ancora in august | perfect weather |
| Esposende in august | perfect weather |
| Caminha in august | perfect weather |
| Ponte de Lima in august | perfect weather |
| Pedroso in august | perfect weather |
| Póvoa de Varzim in august | perfect weather |
| Braga in august | perfect weather |
| Vila do Conde in august | perfect weather |
| Lavra in august | perfect weather |
| Moncao in august | perfect weather |
| Guimarães in august | perfect weather |
Click over cities on the map for information about the weather in august.
Viana do Castelo
perfect weather
good
tolerable
bad
very bad
Weather data for Viana do Castelo in august:
Weather data for Viana do Castelo for august are derived from an average of the weather forecast since 2009 in Viana do Castelo. There is a margin of error and these forecasts are to be considered as general information only. The weather in Viana do Castelo can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Viana do Castelo.