Weather in May
In May, the weather in Viana do Castelo is characterized by substantial daylight and increasing heat. With the high temperature reaching an average of 20.7°C (69.3°F), the overall atmosphere becomes more summery than that of April. The long hours of daylight favor more outdoor activities, enriching the tourist potential of this city. However, the weather in May still maintains a level of freshness that is gradually erased in the succeeding month of June. A light sweatshirt for cooler evenings would be beneficial.
Note: Swimming in 16.3°C (61.3°F) is not a pleasurable activity for the majority of people. Breathing becomes increasingly challenging as water temperature descends from 21°C (69.8°F) to 15°C (59°F).
On the first day of May in Viana do Castelo, sunrise is at 06:31 and sunset at 20:33. On the last day of the month, sunrise is at 06:03 and sunset at 21:02 WEST.
[Resources]Temperature
May's presence in Viana do Castelo records an average high-temperature of a pleasant 20.7°C (69.3°F), closely mirroring April's climate. May in Viana do Castelo sees the temperature falling to a mean low of 11.1°C (52°F).Sea temperature
In May, the average sea temperature is 16.3°C (61.3°F).Note: Swimming in 16.3°C (61.3°F) is not a pleasurable activity for the majority of people. Breathing becomes increasingly challenging as water temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
In Viana do Castelo, the average length of the day in May is 14h and 33min.On the first day of May in Viana do Castelo, sunrise is at 06:31 and sunset at 20:33. On the last day of the month, sunrise is at 06:03 and sunset at 21:02 WEST.
Frequently asked questions
What is the temperature in May in Viana do Castelo?
The average high-temperature, in May, in Viana do Castelo, is 20.7°C (69.3°F), while the average low-temperature is 11.1°C (52°F).
What is the sea temperature in May in Viana do Castelo?
In May, the average sea temperature is 16.3°C (61.3°F). Swimming in 16.3°C (61.3°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).
How many hours of daylight does Viana do Castelo have in May?
In May, the average day length is 14h and 33min.
When are sunrise and sunset in May in Viana do Castelo?
In May, on the first day of the month, sunrise is at 06:31 and sunset at 20:33. On the last day of the month, in Viana do Castelo, sunrise is at 06:03 and sunset at 21:02 WEST.
Average temperature in May
Viana do Castelo, Portugal
- Average high temperature in May: 20.7°C
The warmest month (with the highest average high temperature) is August (26.4°C).
The month with the lowest average high temperature is January (14.6°C).
- Average low temperature in May: 11.1°C
The month with the highest average low temperature is July (15.3°C).
The coldest month (with the lowest average low temperature) is January (4.9°C).
Average sea temperature in May
Viana do Castelo, Portugal
- Average sea temperature in May: 16.3°C
The best month for swimming (with the highest average sea temperature) is September (18.3°C).
The coldest months (with the lowest average sea temperature) are February and March (13.8°C).
Average daylight in May
Viana do Castelo, Portugal
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
Viana do Castelo, Portugal
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