April weather forecastBilbao, Spain
April
Weather in April
April brings a significant shift in weather to Bilbao, with no recorded snowfall and a further increase in temperature. Monthly rainfall is at a low for the year at 43mm (1.69"), a notion delighting those who prefer to stay dry. As the city waves goodbye to the last vestiges of winter, the days get longer and Bilbao blooms under the gentle warmth of the Spanish sun. The first signs of summer are now visible with the substantial increase in daylight. With the arriving warmth, outdoor activities become more viable, attracting adventurers to the city's many natural and cultural sites.Temperature
The arrival of April brings an average high-temperature of a still mild 15°C (59°F), subtly diverging from March's 13°C (55.4°F). Bilbao records a steady low-temperature average of 9.4°C (48.9°F) during April.Humidity
In April, the average relative humidity in Bilbao, Spain, is 77%.Rainfall
In Bilbao, Spain, during April, the rain falls for 18 days and regularly aggregates up to 43mm (1.69") of precipitation. Throughout the year, there are 198.1 rainfall days, and 634mm (24.96") of precipitation is accumulated.Snowfall
April through November are months without snowfall.Sea temperature
In Bilbao, in April, the average water temperature is 13°C (55.4°F).Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.
Daylight
The average length of the day in April in Bilbao, Spain, is 13h and 26min.On the first day of the month, sunrise is at 07:52 and sunset at 20:38. On the last day of April, sunrise is at 07:05 and sunset at 21:12 CEST.
Sunshine
In April, the average sunshine is 7.4h.UV index
January through April, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Bilbao. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 3 in April leads to these recommendations:
Exercise prevention - Precautions against solar damage are endorsed. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Bilbao, Spain
- Average high temperature in April: 15°C
The warmest month (with the highest average high temperature) is August (23.3°C).
The month with the lowest average high temperature is January (10.8°C).
- Average low temperature in April: 9.4°C
The month with the highest average low temperature is August (16.9°C).
The coldest month (with the lowest average low temperature) is February (6.5°C).
Average pressure in April
Bilbao, Spain
- Average pressure in April: 1015.6mbar
The month with the highest atmospheric pressure is December (1021.8mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in April
Bilbao, Spain
- Average wind speed in April: 13.2km/h
The windiest month (with the highest average wind speed) is February (17.2km/h).
The calmest month (with the lowest average wind speed) is August (9.9km/h).
Average humidity in April
Bilbao, Spain
- Average humidity in April: 77%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is October (73%).
Average rainfall in April
Bilbao, Spain
- Average rainfall in April: 43mm
The wettest month (with the highest rainfall) is November (103mm).
The driest month (with the least rainfall) is September (31mm).
Average rainfall days in April
Bilbao, Spain
- Average rainfall days in April: 18 days
The month with the highest number of rainy days is January (18.6 days).
The month with the least rainy days is October (12.7 days).
Average snowfall in April
Bilbao, Spain
- Average snowfall in April: 0mm
The month with the highest snowfall is February (12mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in April
Bilbao, Spain
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in April
Bilbao, Spain
- Average sea temperature in April: 13°C
The best month for swimming (with the highest average sea temperature) is August (21°C).
The coldest months (with the lowest average sea temperature) are February and March (12°C).
Average daylight in April /
Average sunshine in April
Bilbao, Spain
- Average daylight in April: 13h and 24min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in April: 7h and 24min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is November (Average sunshine: 5h and 12min).
Average sunshine days in April
Bilbao, Spain
- Average sunshine days in April: 9 days
The month with the most sunshine days is October (15.4 days).
The month with the least sunshine days is May (8.8 days).
Average UV index in April
Bilbao, Spain
- Average UV index in April: 3
The months with the highest UV index are May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).
Average cloud cover in April
Bilbao, Spain
- Average cloud cover in April: 43
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are September and October (Cloud cover 34).
Average visibility in April
Bilbao, Spain
- Average visibility in April: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
