Bizkaia (Bilbao)
September
Weather in Bizkaia for September 2025
Your guide to Bizkaia weather in September - trends and predictions
In general, the average temperature in Bizkaia 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 Bizkaia in September is notably wet, with an average of 15 rainy days.
Is September a good time to visit Bizkaia? check out the best time to travel to Bizkaia page.
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15
Dry days
15
Rainy days
0
Snow days
26°/17°
Temperatures
12 km/h
Avg max wind
72 %
Avg humidity
Bizkaia in September average weather
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| 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 Bizkaia
See the weather trend as well as the moving average line
September weather day by day
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| 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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Important Notice
Our weather forecast for Bizkaia in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Bizkaia forecast closer to your planned date for the most up-to-date weather information.
Bizkaia in September - FAQ
What are the expected maximum and minimum temperatures in Bizkaia during September?
During September, expect a variety of temperatures with highs around 26° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in Bizkaia during September?
Significant rainfall exceeding 121.9 mm is expected in Bizkaia during September, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Bizkaia during September?
The average wind speed in Bizkaia during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Bizkaia in September?
As you prepare for your trip to Bizkaia 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 Bizkaia, 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 Bizkaia
Explore the daily rainfall trends and prepare for Bizkaias September weather 💧
UV exposure in Bizkaia during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Bizkaia?Get accurate weather forecasts for Bizkaia, located at latitude 43.263 and longitude -2.925. Stay updated with localized weather information tailored for Bizkaia.
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