Weather in April
April's weather reflects the full arrival of spring in Viana do Castelo. The month expresses a higher average temperature of 18.5°C (65.3°F). Each day has longer sunlight hours than March and this illumination brings life to the blooming flora of the city. However, the weather is not as warm or sunny as it is in May. Despite the occasional brisk mornings, the weather generally remains pleasant throughout the entire month.
Note: Unprotected swimming in 14.9°C (58.8°F) is dangerous due to potential cold shock. Especially when temperatures go below 10°C (50°F), leading to hyperventilation.
On the first day of April, sunrise is at 07:17 and sunset at 20:00. On the last day of the month, sunrise is at 06:32 and sunset at 20:32 WEST.
[Resources]Temperature
April in Viana do Castelo records an average high-temperature of a still refreshing 18.5°C (65.3°F), indicating a minor variation from the preceding month. Viana do Castelo, during the nights of April, experiences an average temperature drop to a chilly 8.8°C (47.8°F).Sea temperature
In April, the average sea temperature in Viana do Castelo, Portugal, is 14.9°C (58.8°F).Note: Unprotected swimming in 14.9°C (58.8°F) is dangerous due to potential cold shock. Especially when temperatures go below 10°C (50°F), leading to hyperventilation.
Daylight
In April, the average length of the day is 13h and 22min.On the first day of April, sunrise is at 07:17 and sunset at 20:00. On the last day of the month, sunrise is at 06:32 and sunset at 20:32 WEST.
Frequently asked questions
What is the usual temperature for Viana do Castelo in April?
The average high-temperature, in April, in Viana do Castelo, is 18.5°C (65.3°F), while the average low-temperature is 8.8°C (47.8°F).
What is the sea water temperature in April in Viana do Castelo?
In Viana do Castelo, the average seawater temperature in April is 14.9°C (58.8°F). Swimming in 14.9°C (58.8°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
What is the average length of the day in April in Viana do Castelo?
In Viana do Castelo, the average day length in April is 13h and 22min.
What time are sunrise and sunset in April in Viana do Castelo?
In April, on the first day of the month, sunrise is at 07:17 and sunset at 20:00. On the last day of the month, in Viana do Castelo, sunrise is at 06:32 and sunset at 20:32 WEST.
Average temperature in April
Viana do Castelo, Portugal
- Average high temperature in April: 18.5°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 April: 8.8°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 April
Viana do Castelo, Portugal
- Average sea temperature in April: 14.9°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 April
Viana do Castelo, Portugal
- Average daylight in April: 13h and 2min
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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