August Weather in Bilbao, Spain

Last updated: February 6, 2025

August in Bilbao, Spain offers a delightful mix of warm temperatures and occasional rain, making it a vibrant summer destination. With a maximum temperature reaching 33°C (93°F) and a comfortable average of 20°C (67°F), visitors can enjoy sunny days ideal for exploring the city. However, temperatures can drop to a minimum of 12°C (54°F) during cooler evenings. Though August sees about 62 mm (2.5 in) of precipitation over 12 days, the abundance of 82% humidity adds a touch of tropical feel, creating a lush environment. Embrace the warmth and lively atmosphere while navigating the occasional summer showers in this Basque gem.

August Temperature in Bilbao

In August, Bilbao experiences delightful summer warmth, with minimum temperatures starting at 12°C (54°F) and soaring to a toasty 33°C (93°F) for the maximum. This month boasts an average temperature of 20°C (67°F), making it one of the warmest periods of the year. As the summer peaks, the temperatures show a notable upward trend from the previous months, with both day and nighttime numbers reflecting the lively atmosphere of the city. This warm weather creates the perfect backdrop for enjoying Bilbao's vibrant outdoor scenes, culinary delights, and cultural festivities under the sun.

August Weather in Bilbao: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Bilbao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec465051545863666764595350
Data source: Temperature data for Bilbao generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Bilbao

In August, Bilbao experiences a transition towards drier weather as the summer begins to wane. With an average precipitation of 62 mm (2.5 in), rainfall in this month is slightly less than in July, marking it as one of the driest periods of the year. Interestingly, the city sees precipitation on about 12 days, which indicates a typical summer pattern with occasional showers rather than consistent downpours. This mild decrease in rainfall paves the way for sunnier days, allowing both locals and tourists to bask in the warm, inviting atmosphere of the city before the autumn rains arrive.

August Precipitation Trends in Bilbao

The chart displays monthly precipitation patterns in Bilbao, with values for each month alongside August's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec117103989282104656281105158154
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Bilbao

In August, Bilbao, Spain experiences a notable drop in humidity, with levels around 82%. This slight decrease follows the peak of 87% in July, suggesting a transition from the sweltering summer months to the more temperate autumn. Throughout the year, humidity levels in Bilbao are relatively high, especially in the winter months, resting at 85% in January and December. The overall trend indicates a gradual decline in humidity as summer wanes, peaking only in July, making August's weather more comfortable for outdoor activities while still maintaining a lush, vibrant landscape characteristic of this beautiful coastal city.

August Average Humidity in Bilbao

This chart illustrates the average monthly humidity levels in Bilbao, with August's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how August's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec85%83%82%81%81%83%87%82%77%80%83%85%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Bilbao

In August, the UV Index in Bilbao, Spain maintains a notable level of intensity, registering at 9, categorized as very high. Although slightly lower than the peak values seen in June and July, which both reached 10, this summer month still demands careful sun exposure management, as the burn time is a brief 15 minutes. This trend reflects a consistent increase in UV intensity from the cooler months, where January begins at a low 2 and climbs steadily to the peak summer months. As summer wanes into September, the UV Index is expected to decrease to 7, signaling a shift toward milder sun exposure risks. For those planning outdoor activities, understanding these trends is essential to enjoy the beautiful Bilbao sun safely. For more detailed insights, check out the Bilbao UV Index.

Maximum UV Index Levels in Bilbao for August

The chart shows the monthly maximum UV Index (UVI) for Bilbao in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec24679101097532
Data source: Bilbao August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

August Sunshine in Bilbao

In August, Bilbao basks in a generous 381 hours of sunlight, marking a peak of bright days that linger in the tail end of summer. This month follows a thrilling upward trajectory that begins back in January with a modest 172 hours. As the seasons progress, the city experiences a steady increase in sunshine, culminating in July's optimistic 400 hours. While August slightly dips from July's zenith, it still reflects a radiant month, akin to a warm embrace before the gradual transition into autumn. By September, the city sees a decrease to 332 hours, yet the lingering warmth of summer continues to color the skies, making Bilbao an inviting destination that beautifully balances seasonal changes.

Monthly Sunshine Duration in Bilbao: August Highlighted

The August sunshine duration represents the total number of hours Bilbao experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec172h241h313h332h375h376h400h381h332h293h232h226h
Data source: Bilbao August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bilbao During August

August in Bilbao offers a 37% chance of sunny weather, making it a promising month for those seeking sunshine. This percentage aligns with the peak summer months of July and August, reflecting a trend of increased sunny days as the year progresses. Unlike the winter months, which see significantly lower chances of sun, summer brings a welcome rise in optimism for outdoor activities and leisurely pursuits. As summer transitions to fall in September, the chance of sunny days dips to 27%, so August stands out as a prime time to enjoy the vibrant atmosphere of this charming Basque city under the sun.

Percentage of Sunny Days in August in Bilbao

The chart illustrates the percentage of sunny days in Bilbao throughout the year, with August highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Bilbao experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec23%22%40%34%28%32%37%37%27%36%18%39%
Data source: Bilbao August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bilbao in August

In August, Bilbao basks in a delightful 13 hours of daylight, a subtle transition that signals the end of summer while still offering ample sunshine for outdoor adventures. This month follows the peak of 15 hours in June and retains a vibrant atmosphere with slightly diminished light compared to July's 14 hours. As daylight gradually wanes, moving into September and October, one can sense the shift in seasons, emphasizing the rich beauty of late summer evenings. The daylight duration in Bilbao paints a clear picture of seasonal change, ensuring that while the days may grow shorter, the warmth of summer remains palpable until autumn fully arrives.

Average Daylight Hours in Bilbao for August

The chart illustrates the variation in daylight duration in Bilbao throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 21m10h 30m11h 57m13h 26m14h 41m15h 19m14h 59m13h 52m12h 27m10h 58m9h 40m9h
Data source: Bilbao daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Bilbao

In Bilbao, Spain, the winds of August offer a gentle reprieve, with an average speed of only 2.4 m/s (5 mph), marking it as one of the calmest months of the year. This trend of decreasing wind speed is notable as the summer progresses, descending from 3.8 m/s (9 mph) in January to this summer's lull. Following a steady decline from May through August, where winds drop from 2.8 m/s to their lowest point, August embodies a tranquil moment before the breezy autumn months return, bringing winds back up to 2.9 m/s (7 mph) in October. Overall, the shifting patterns illustrate Bilbao’s seasonal transition, inviting residents and visitors alike to enjoy leisurely summer afternoons in the city's captivating landscape.

Average August Wind Speed in Bilbao

The chart displays monthly wind speed patterns in Bilbao, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.84.33.43.22.82.82.62.4 m/s2.62.93.84.6
Data source: Bilbao August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Bilbao Compares to Other Months

The weather in Bilbao changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Bilbao and find detailed weather information for every month.

August and January present stark contrasts in weather patterns. In August, temperatures range from a cool 12°C (54°F) at night to a sizzling 33°C (93°F) during the day, with an average of 20°C (67°F). This month sees relatively moderate rainfall at 62 mm (2.5 in) across approximately 12 days, along with high humidity at 82%. Conversely, January experiences much colder conditions, with minimum temperatures dropping to -1°C (30°F) and a maximum of 19°C (66°F), resulting in an average of 8°C (46°F). Rainfall is more significant during this month, totaling 117 mm (4.6 in) over around 13 days, coupled with slightly higher humidity at 85%. For a closer look at January weather specifics, check out Bilbao weather in January.

August and February present stark contrasts in weather conditions. August boasts a warmer climate with temperatures ranging from a pleasant 12°C (54°F) to a sweltering maximum of 33°C (93°F), accompanied by an average humidity of 82%. Despite its higher temperatures, August experiences relatively moderate precipitation at 62 mm (2.5 inches) over about 12 days.

In stark contrast, February offers much cooler temperatures, with a minimum dipping to -2°C (30°F) and an average of 10°C (50°F), peaking at 22°C (72°F). This month is wetter, with an average of 103 mm (4.0 inches) of precipitation across 13 days, all while maintaining a humidity level of 83%. For more detailed insights into February's weather, you can check Bilbao weather in February.

August weather in Bilbao presents warm temperatures, ranging from a minimum of 12°C (54°F) to a maximum of 33°C (93°F), with an average of 20°C (67°F). The month experiences about 62 mm (2.5 in) of rainfall over 12 days, and the humidity remains high at 82%. In contrast, March offers a much cooler climate, with temperatures varying from a minimum of -1°C (30°F) to a maximum of 21°C (70°F) and an average of 10°C (51°F). March sees more substantial rainfall, totaling 98 mm (3.9 in) over 17 days, but maintains the same humidity level of 82%. For more details on March weather, visit Bilbao weather in March.

August and April present contrasting weather patterns. In August, temperatures are warmer, with averages around 20°C (67°F) and highs reaching up to 33°C (93°F), while April sees cooler temperatures, averaging 12°C (54°F) and peaking at 23°C (74°F). Precipitation is slightly lower in August at 62 mm (2.5 in) over 12 days compared to April, which receives 92 mm (3.6 in) over 15 days. Humidity levels are quite similar, with August at 82% and April at 81%. For more detailed information on April weather, visit Bilbao weather in April.

When comparing the weather in August and May, significant differences emerge. August tends to be warmer, with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 33°C (93°F), while May is cooler, with temperatures ranging from 5°C (41°F) to 26°C (80°F). Though August is drier with 62 mm (2.5 in) of precipitation over 12 days, it still features relatively high humidity at 82%. In contrast, May experiences slightly more rainfall, totaling 82 mm (3.2 in) over 15 days, and a marginally lower humidity level of 81%. For more details, you can check the Bilbao weather in May.

In June, the weather tends to be slightly cooler, with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 32°C (89°F), and an overall average of 17°C (63°F). This month sees more precipitation, with 103 mm (4.1 in) spread over 14 days, resulting in a humidity level of 83%. In contrast, August experiences warmer conditions, with a minimum temperature of 12°C (54°F), an average of 20°C (67°F), and maximums reaching 33°C (93°F). Although August is drier, with 62 mm (2.5 in) of rain over 12 days, the humidity remains high at 82%. For more detailed information on June weather, you can check out Bilbao weather in June.

July and August both showcase warm temperatures, with July featuring a minimum of 11°C and a maximum of 33°C, while August has a slightly higher minimum of 12°C and the same maximum of 33°C. The average temperatures are very comparable, with July averaging 19°C and August at 20°C. Precipitation levels are similar as well, with July receiving 65 mm over 12 days and August seeing just a slight decrease to 62 mm, also over 12 days. However, August is characterized by slightly lower humidity at 82%, compared to July's 87%. For more detailed information on July's weather, you can check Bilbao weather in July.

August tends to be hotter and more humid than September, with temperatures ranging from a low of 12°C (54°F) to a high of 33°C (93°F), resulting in an average of 20°C (67°F). The humidity in August reaches a peak of 82%, along with 62 mm (2.5 in) of precipitation over 12 days. In contrast, September experiences slightly cooler temperatures, with a minimum of 10°C (50°F), an average of 18°C (65°F), and a maximum of 30°C (86°F). While the month has similar precipitation patterns with 81 mm (3.2 in) also over 12 days, the humidity drops to 77%. For a more detailed look at the weather in September, you can visit Bilbao weather in September.

In comparing the weather between August and October, we see notable differences in temperature and precipitation patterns. August typically enjoys warmer temperatures, with a minimum of 12°C and a maximum reaching up to 33°C, resulting in an average of 20°C. In contrast, October experiences cooler weather, with temperatures ranging from a minimum of 5°C to a maximum of 27°C, averaging at 15°C.

Precipitation also increases in October, with about 105 mm falling over 13 days, compared to August's 62 mm spread over 12 days. Despite the rain, October's humidity remains relatively low at 80%, slightly less than August's 82%. For a more detailed look at October's climate, check out Bilbao weather in October.

August weather features warmer temperatures, with a minimum of 12°C (54°F) and an average of 20°C (67°F), peaking at a high of 33°C (93°F). While it experiences moderate precipitation of 62 mm (2.5 in) over about 12 days, the humidity remains relatively high at 82%. In contrast, November sees much cooler temperatures, with a minimum of 4°C (39°F) and an average of 11°C (53°F), reaching a maximum of 22°C (72°F). The month is significantly wetter, receiving 158 mm (6.2 in) of precipitation over 18 days, while humidity slightly increases to 83%. For a deeper dive into November weather specifics, you can check out Bilbao weather in November.

In August, the weather is characterized by warmer temperatures, ranging from a minimum of 12°C (54°F) to a maximum of 33°C (93°F), with an average temperature of 20°C (67°F). This month experiences moderate precipitation of 62 mm (2.5 in) over about 12 days, and humidity levels are relatively high at 82%. In contrast, December brings cooler conditions, with temperatures dipping to a low of 2°C (36°F) and peaking at 19°C (66°F), averaging around 10°C (50°F). This month is significantly wetter, receiving 154 mm (6.1 in) of precipitation over 17 days, and humidity slightly increases to 85%. For more detailed information on December weather, visit Bilbao weather in December.

Compare Bilbao's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Bilbao

August in Bilbao brings a delightful warmth, with temperatures reaching their peak compared to other months, averaging around 20°C (67°F), and occasionally soaring to a high of 33°C (93°F). While the days are bright and sunny, the month also experiences a fair share of rainfall, totaling about 62 mm (2.5 in) over approximately 12 days. This combination makes August feel more humid, with levels hovering around 82%, adding a tropical flair to the summer ambiance. For a deeper understanding of the city’s weather patterns throughout the year, visit Bilbao Climate.