Climate and monthly weather forecastBilbao, Spain
Climate and monthly weather forecast
The climate of Bilbao
Bilbao, Spain, is located in the Cfb Köppen climate zone, characterized by marine west coast weather conditions with warm summers. Here, a clear shift between the seasons is noticeable, with distinctively moderate temperature variants and considerable precipitation amounts throughout the year.Analyzing the provided climatological data, the yearly temperatures in Bilbao swing between 6.5°C (43.7°F) and 23.3°C (73.9°F), while humidity levels hover around 75 to 79%. Weather conditions reveal precipitation ranging from 31mm (1.22") to 103mm (4.06") monthly, indicating a wet environment. Rainfall is frequent with a record of up to 18.6 days in some months. Snowfall though moderate, tends to happen mostly in the colder months with an annual total of up to 12mm (0.47") across select months.
Inspection of the data reveals a pattern of varying daylight hours from 9 hours to over 15 hours, while sunshine lasts from approximately 5.2 to 9.5 hours per day. UV index readings are constant and never go above 5 units. Visibility remains unchanging annually at 10km (6.2mi), and wind speeds are reasonably stable, with the highest gusts reaching 26.5km/h (16.5mph).
The unique weather pattern to note is the month of November which receives the maximum rainfall of 103mm (4.06"), causing a significant increase in humidity.
The best time to visit Bilbao
Considering the weather factors, the ideal time to explore Bilbao would be during the summer months from June to August. During this period, temperatures range from 20.3°C (68.5°F) to 23.3°C (73.9°F). The rainfall is less compared to other seasons, averaging from 34mm (1.34") to 50mm (1.97"). Plus, visitors can enjoy up to 15.3 hours of daylight and about 9.5 hours of sunshine, ideal conditions for outdoor activities.The worst time to visit Bilbao
On the contrary, the less hospitable time for tourists would be the late autumn month of November. This month witnesses the most substantial precipitation of 103mm (4.06") across 18.4 days. The temperature drops to an average of 14.5°C (58.1°F), alongside a lower daylight duration of 9.7 hours, possibly restricting outdoor pursuits.Spring weather in Bilbao
Spring marks a transitional phase in Bilbao when the colder months make way for warmer weather. From March to May, temperatures rise from 13°C (55.4°F) to 17°C (62.6°F). Spring carries noticeable rainfall ranging from 43mm (1.69") to 54mm (2.13"), distributed over approximately 18 days. The length of daylight extends from 12 hours to 14.7 hours, and sunshine increases progressively from 7.2 to 8.9 hours per day.Summer weather in Bilbao
Summer, from June to August, provides the most delightful weather conditions. Average temperature highs range from 20.3°C (68.5°F) to 23.3°C (73.9°F) and are complemented by low rainfall from 34mm (1.34") to 50mm (1.97"). These warmer months offer the longest daylight hours, extending to 15.3 hours in June, and ample sunshine duration averaging 9.4 hours.Autumn weather in Bilbao
Autumn months of September to November see a downward trend in temperatures from 21.6°C (70.9°F) to 14.5°C (58.1°F) and an escalation in precipitation. Rainfall increases from 31mm (1.22") and peaks at 103mm (4.06") in November, resulting in more humid conditions.Winter weather in Bilbao
Winter brings in the coldest temperatures, ranging from 6.8°C (44.2°F) to 10.8°C (51.4°F) between December and February. Though Bilbao experiences mild winters compared to other regions, December brings occasional snowfall of around 5mm (0.2"). Rainfall rates range from 54mm (2.13") to 84mm (3.31"), resulting in cold, wet conditions. However, the short winter days still enjoy an average sunshine duration of 5.4 hours.Weather in January
Cold temperatures prevail in Bilbao, Spain during January, interspersed with several days of snowfall. The mercury ranges from 6.8°C (44.2°F) to 10.8°C (51.4°F), while the city experiences 5mm (0.2") of snowfall, usually close to the beginning of the year. Weather in January »Weather in February
Bilbao experiences a minor increase in temperatures in February, offering a slight respite from the cold. However, the recorded snowfall doubles from that seen in January, hitting a peak at 12mm (0.47"). This month is less rain-soaked, although downpours are not unusual. Weather in February »Weather in March
With the arrival of March, residents and visitors in Bilbao can say goodbye to snowfall, as temperatures continue their upward trend. The transition from winter to spring is marked by a plummet in snowfall to just 1mm (0.04"). During this period, the city enjoys greater daylight hours, heralding the onset of spring. Weather in March »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. Weather in April »Weather in May
May in Bilbao is characterized by warmer temperatures and extended daylight hours, as the grips of the colder season loosen further. Rainfall remains consistent around 50mm (1.97"), similar to April, making it a wet yet warm period. Weather in May »Weather in June
June ushers in the summer season in Bilbao, with temperatures soaring to 20.3°C (68.5°F). This month sees no recorded snowfall, signaling the definitive end of the colder months. The clear skies and ample sunlight make for longer days, encouraging more exploration and outdoor activities. Weather in June »Weather in July
July is the peak of summer in Bilbao, with the highest temperatures of the year observed at 22.6°C (72.7°F). The city experiences the least rainfall at 34mm (1.34"), making it the driest month of the year. The warmth of the sun reaches its zenith in July, bathing the city in pleasant heat. Weather in July »Weather in August
As temperatures continue to hover in the 20s°C, August remains a hot month in Bilbao. Despite the slight decline in mercury readings compared to July, the city’s warmth barely diminishes. The outdoor lifestyle thrives with locals and tourists flocking to the city’s beaches, parks, and markets. Weather in August »Weather in September
September signifies the start of fall in Bilbao as temperatures gently begin their descent while remaining above 20°C (68°F). Rainfall increases to 31mm (1.22"), though it remains relatively low compared to the city's wetter months. Weather in September »Weather in October
October witnesses a further cooling down in Bilbao. As daylight hours reduce, there is a marked transition from the warmth of September to cooler, crisper days. Noteworthy is the slight increase in rainfall to 35mm (1.38"), introducing the city to the wetter months' arrival. Weather in October »Weather in November
Temperatures continue their downward trend in November as Bilbao leans into the late-autumn season. The city sees the highest rainfall for the year at a significant 103mm (4.06"), making it the wettest month of the year. The frequent showers and cooler temperatures bring a dampness the city hasn't experienced since the beginning of the year. Weather in November »Weather in December
Closing out the year, December in Bilbao signals the arrival of winter with average temperatures plummeting to 8.1°C (46.6°F). The city records 2mm (0.08") of snow, rain increases to 54mm (2.13"), and the daylight hours hover around nine, marking the shortest day of the year. Weather in December »Updated: Jan 29, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The month of January, characterized by an average high of 10.8°C (51.4°F) and a low of 6.8°C (44.2°F), is recognized as the coldest.
In Bilbao, during the entire year, the rain falls for 198.1 days and collects up to 634mm (24.96") of precipitation.
Months with snowfall in Bilbao, Spain, are January through March and December.
Throughout the year, in Bilbao, there are 2.4 snowfall days, and 20mm (0.79") of snow is accumulated.
The months with the lowest UV index in Bilbao, Spain, are January through April, November and December, with an average maximum UV index of 3.
February is the month with the most snowfall. Snow falls for 1.2 days and accumulates 12mm (0.47") of snow.
The months with the coldest seawater in Bilbao, Spain, are February and March, with an average sea temperature of 12°C (53.6°F).
In Bilbao, Spain, snow does not fall in April through November.
The months with the highest humidity in Bilbao are May and June, with an average relative humidity of 79%.
May through September, with an average maximum UV index of 5, are months with the highest UV index in Bilbao, Spain.
June has the longest days of the year in Bilbao, Spain, with an average of 15h and 18min of daylight.
July has the most sunshine of the year in Bilbao, with an average of 9.5h of sunshine.
In Bilbao, August records the average highest temperatures, peaking at 23.3°C (73.9°F) and reaching a low of 16.9°C (62.4°F).
With an average sea temperature of 21°C (69.8°F), August is the month with the warmest seawater in Bilbao, Spain.
September is the month with the least rainfall. Rain falls for 14 days and accumulates 31mm (1.22") of precipitation.
October is the least humid month in Bilbao, Spain, with an average relative humidity of 73%.
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
The month with the most rainfall in Bilbao is November, when the rain falls for 18.4 days and typically aggregates up to 103mm (4.06") of precipitation.
With an average of 5.2h of sunshine, November has the least sunshine of the year.
December has the shortest days of the year in Bilbao, with an average of 9h and 0min of daylight.
Average temperature
Bilbao, Spain
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).
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
Bilbao, Spain
- Average pressure in January:
1020.5mbar - Average pressure in February:
1018.8mbar - Average pressure in March:
1017.6mbar - Average pressure in April:
1015.6mbar - Average pressure in May:
1017.5mbar - Average pressure in June:
1017.5mbar
- Average pressure in July:
1018.1mbar - Average pressure in August:
1018mbar - Average pressure in September:
1018.4mbar - Average pressure in October:
1017.1mbar - Average pressure in November:
1015.8mbar - Average pressure in December:
1021.8mbar
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
Bilbao, Spain
- Average wind speed in January:
16.4km/h - Average wind speed in February:
17.2km/h - Average wind speed in March:
15.1km/h - Average wind speed in April:
13.2km/h - Average wind speed in May:
12.1km/h - Average wind speed in June:
10.8km/h
- Average wind speed in July:
10.2km/h - Average wind speed in August:
9.9km/h - Average wind speed in September:
10.8km/h - Average wind speed in October:
12.2km/h - Average wind speed in November:
16.9km/h - Average wind speed in December:
16.1km/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
Bilbao, Spain
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Bilbao, Spain
The wettest month (with the highest rainfall) is November (103mm).
The driest month (with the least rainfall) is September (31mm).
Average rainfall days
Bilbao, Spain
- Average rainfall days in January:
18.6 days - Average rainfall days in February:
15.8 days - Average rainfall days in March:
17.8 days - Average rainfall days in April:
18 days - Average rainfall days in May:
18.4 days - Average rainfall days in June:
16.8 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
15.3 days - Average rainfall days in September:
14 days - Average rainfall days in October:
12.7 days - Average rainfall days in November:
18.4 days - Average rainfall days in December:
16.5 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
Bilbao, Spain
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
Bilbao, Spain
- Average snowfall days in January:
0.7 days - Average snowfall days in February:
1.2 days - Average snowfall days in March:
0.2 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0.3 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
Bilbao, Spain
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 / Average sunshine
Bilbao, Spain
- Average daylight in January:
9h and 24min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 42min - Average daylight in June:
15h and 18min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - Average daylight in December:
9h and 0min
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 January:
5h and 24min - Average sunshine in February:
6h and 12min - Average sunshine in March:
7h and 12min - Average sunshine in April:
7h and 24min - Average sunshine in May:
8h and 54min - Average sunshine in June:
9h and 24min
- Average sunshine in July:
9h and 30min - Average sunshine in August:
8h and 30min - Average sunshine in September:
8h and 18min - Average sunshine in October:
8h and 0min - Average sunshine in November:
5h and 12min - Average sunshine in December:
5h 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
Bilbao, Spain
- Average sunshine days in January:
9.6 days - Average sunshine days in February:
9.6 days - Average sunshine days in March:
10.2 days - Average sunshine days in April:
9 days - Average sunshine days in May:
8.8 days - Average sunshine days in June:
9.9 days
- Average sunshine days in July:
10.6 days - Average sunshine days in August:
12.3 days - Average sunshine days in September:
13.4 days - Average sunshine days in October:
15.4 days - Average sunshine days in November:
9.4 days - Average sunshine days in December:
12.2 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
Bilbao, Spain
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
Bilbao, Spain
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
Bilbao, Spain
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).
