Weather in Bilbao for September 2025
In general, the average temperature in Bilbao at the beginning of September is 24.4 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 24.1 °C by the end of September.
The climate of Bilbao in September is notably wet, with an average of 15 rainy days.
Is September a good time to visit Bilbao? check out the best time to travel to Bilbao page.
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Bilbao in September average weather
Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
---|---|---|---|---|---|---|
1 25° | 2 22° | 3 22° | 4 26° | 5 25° | 6 25° | 7 26° |
8 26° | 9 27° | 10 25° | 11 23° | 12 20° | 13 20° | 14 22° |
15 24° | 16 25° | 17 24° | 18 24° | 19 25° | 20 26° | 21 23° |
22 19° | 23 21° | 24 25° | 25 25° | 26 23° | 27 22° | 28 23° |
29 25° | 30 26° |
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Temperatures trend during September in Bilbao
September weather day by day
Date | Weather | Temperatures | Rain | UV | More |
---|---|---|---|---|---|
1 Sept. | Overcast | 25° /17° | 1.6 mm | 6 | |
2 Sept. | Moderate or heavy rain shower | 22° /17° | 15.5 mm | 5 | |
3 Sept. | Partly cloudy | 22° /16° | 2.4 mm | 6 | |
4 Sept. | Patchy rain possible | 26° /18° | 9 mm | 6 | |
5 Sept. | Sunny | 25° /16° | 9.5 mm | 6 | |
6 Sept. | Patchy rain possible | 25° /16° | 7.6 mm | 6 | |
7 Sept. | Patchy rain possible | 26° /17° | 1.7 mm | 6 | |
8 Sept. | Patchy rain possible | 26° /17° | 1.2 mm | 7 | |
9 Sept. | Patchy light rain with thunder | 27° /16° | 1.8 mm | 6 | |
10 Sept. | Patchy rain possible | 25° /17° | 3.9 mm | 6 | |
11 Sept. | Light rain shower | 23° /15° | 17 mm | 6 | |
12 Sept. | Moderate or heavy rain shower | 20° /15° | 13.9 mm | 5 | |
13 Sept. | Cloudy | 20° /14° | 1.2 mm | 5 | |
14 Sept. | Cloudy | 22° /13° | 0 mm | 5 | |
15 Sept. | Sunny | 24° /14° | 0 mm | 6 | |
16 Sept. | Partly cloudy | 25° /15° | 0 mm | 7 | |
17 Sept. | Patchy light rain | 24° /15° | 1.5 mm | 5 | |
18 Sept. | Thundery outbreaks possible | 24° /15° | 0.1 mm | 6 | |
19 Sept. | Partly cloudy | 25° /14° | 1.6 mm | 6 | |
20 Sept. | Sunny | 26° /16° | 1.3 mm | 6 | |
21 Sept. | Light rain shower | 23° /15° | 6.3 mm | 5 | |
22 Sept. | Light rain shower | 19° /14° | 4.6 mm | 4 | |
23 Sept. | Patchy rain possible | 21° /12° | 0.5 mm | 5 | |
24 Sept. | Sunny | 25° /13° | 0.1 mm | 6 | |
25 Sept. | Sunny | 25° /15° | 0.6 mm | 7 | |
26 Sept. | Cloudy | 23° /15° | 4 mm | 5 | |
27 Sept. | Overcast | 22° /15° | 3.5 mm | 5 | |
28 Sept. | Sunny | 23° /13° | 2.4 mm | 6 | |
29 Sept. | Patchy rain possible | 25° /14° | 0 mm | 6 | |
30 Sept. | Sunny | 26° /15° | 0 mm | 6 | |
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Bilbao in September - FAQ
What to pack to Bilbao in September?
As you prepare for your trip to Bilbao in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Bilbao, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
September rainfall patterns in Bilbao
UV exposure in Bilbao during September
Quick links
Get accurate weather forecasts for Bilbao, located at latitude 43.263 and longitude -2.925. Stay updated with localized weather information tailored for Bilbao.