30YearWeather
Packing for Bilbao
2026 Packing Guide

What to Wear in Bilbao in September

Your complete weather-based packing list derived from 30 years of historical climate data.

September Weather in Bilbao at a Glance

Avg High

23°C

Avg Low

15°C

Rain Risk

26%

💡 Quick Tip:

Light breathable clothing, t-shirts, light pants or shorts. Bring a light layer for evenings. Pack a compact umbrella or a light rain jacket just in case.

Weekly Packing Breakdown for Bilbao

Week 1Days 1-7
16° - 24°
27% Rain

Light breathable clothing, t-shirts, light pants or shorts.

Week 2Days 8-15
16° - 23°
26% Rain

Light breathable clothing, t-shirts, light pants or shorts.

Week 3Days 16-23
15° - 22°
28% Rain

Light breathable clothing, t-shirts, light pants or shorts.

Week 4Days 24+
14° - 22°
24% Rain

Light breathable clothing, t-shirts, light pants or shorts.

Essential Packing List for Bilbao in September

Don't leave home without these essentials.

Top Layers

  • T-Shirts / Tank Tops
  • Light Cardigan / Hoodie
  • No coat needed

Bottoms & Shoes

  • Jeans / Heavy Trousers
  • Comfortable Walking Shoes
  • Socks (Cotton/Athletic)

Accessories

  • Sunglasses & Hat
  • Compact Umbrella

Common Questions about Bilbao Weather in September

What is the weather like in Bilbao in September?

It is mild and pleasant with average highs of 23°C. Nights average around 15°C.

Do I need a heavy coat?

No, a light jacket or sweater is sufficient for cooler moments.

Does it rain often in Bilbao in September?

Rain is relatively rare (26% chance), but a small umbrella is always good to have.

What shoes should I take to Bilbao?

Comfortable walking shoes are the most important item. Sneakers or loafers are perfect.

Can I wear shorts / short sleeves?

Yes, daytimes are warm enough for shorts and short sleeves.