What August feels like in Bilbao
Late summer arrives in Bilbao with August. Warm daytime weather invites long lunches outside and evening strolls. Little changes after sunset — nights stay mild, only slightly below the daytime level. High humidity makes the heat feel heavier and sticky, especially on still afternoons.
Rain in Bilbao in August
It is a changeable month: rain comes about one day in 3, with dry spells in between. Each rainy day adds about 4.9 mm (0.2 in), a proper wetting rather than a sprinkle. That is lighter than the city's yearly norm of about 6.9 mm per rainy day. It is among the three driest months of the year.
Daylight and sunshine in August
In mid-August, sunrise is at about 7:16 am and sunset at about 9:17 pm (local time) — 14 h 1 min of daylight. Evenings are drawing in — 1 h 5 min less daylight than mid-July. Measured sunshine covers about 76% of the daylight — there are plenty of bright spells.
How August compares to the rest of the year
Ranked by average high, August comes out as the warmest month in Bilbao. Afternoons run 0.7°C (1.3°F) warmer than in July, with 5 mm more rain. Temperatures keep falling into September. September averages a high of 22.9°C (73.2°F).
Who August suits
- Sightseeing: a good fit — comfortable enough to explore on foot all day.
- Parks & outdoor: a good fit — pleasant for gardens, parks and riversides.
- Beach: less ideal — too many rainy days.
Tips for visiting Bilbao in August
Rain Protection
Keep a small umbrella in your bag and wear shoes that cope with puddles.
Sunglasses
Bright days make sunglasses worth packing.
Quick questions
How warm is Bilbao in August?
Afternoons average 24.4°C (75.9°F) and nights about 17.2°C (63°F) — warm by most people's standards. It is the warmest month of the year.
Does it rain a lot in Bilbao in August?
Yes, fairly — rain falls about one day in 3 and totals about 49 mm, so an umbrella is worth carrying.
What should I wear in Bilbao in August?
Pack rain protection and sunglasses. Evenings feel similar to the day, so the same clothes work from morning to night.
Is August or September better for visiting Bilbao?
On our 12-month climate ranking, August comes out ahead (#2 of 12 vs #3). September is cooler and has more rainy days.