Porto
September
Weather in Porto for September 2025
Your guide to Porto weather in September - trends and predictions
In general, the average temperature in Porto at the beginning of September is 22.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 21.6 °C by the end of September.
Porto experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 86.6 mm.
Is September a good time to visit Porto? check out the best time to travel to Porto page.
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Temperatures
Rain 🌧️
More
7
Dry days
23
Rainy days
0
Snow days
22°/16°
Temperatures
19 km/h
Avg max wind
71 %
Avg humidity
Porto Weather September
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Temperatures trend during September in Porto
See the weather trend as well as the moving average line
September weather in Porto day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Moderate or heavy rain shower | 22° /16° | 3.8 mm | 5 | |
| 2 Sept. |  Patchy rain possible | 21° /15° | 0.1 mm | 5 | |
| 3 Sept. |  Partly cloudy | 22° /15° | 2.4 mm | 6 | |
| 4 Sept. |  Sunny | 23° /15° | 1.7 mm | 6 | |
| 5 Sept. | Sunny | 24° /17° | 5.7 mm | 6 | |
| 6 Sept. |  Cloudy | 23° /16° | 1.4 mm | 5 | |
| 7 Sept. | Patchy rain possible | 23° /16° | 2.3 mm | 5 | |
| 8 Sept. | Moderate or heavy rain shower | 22° /16° | 2.7 mm | 5 | |
| 9 Sept. | Moderate rain at times | 22° /16° | 5 mm | 5 | |
| 10 Sept. | Patchy rain possible | 23° /16° | 0.9 mm | 6 | |
| 11 Sept. | Partly cloudy | 24° /16° | 0.5 mm | 6 | |
| 12 Sept. | Partly cloudy | 23° /17° | 2.8 mm | 6 | |
| 13 Sept. | Moderate or heavy rain shower | 24° /17° | 17.3 mm | 6 | |
| 14 Sept. |  Heavy rain at times | 23° /17° | 7.1 mm | 6 | |
| 15 Sept. | Moderate or heavy rain shower | 23° /17° | 5.7 mm | 6 | |
| 16 Sept. | Sunny | 24° /17° | 1 mm | 6 | |
| 17 Sept. | Sunny | 24° /17° | 3.4 mm | 6 | |
| 18 Sept. | Sunny | 24° /16° | 1.3 mm | 6 | |
| 19 Sept. | Sunny | 23° /16° | 0 mm | 6 | |
| 20 Sept. | Sunny | 23° /15° | 1.3 mm | 6 | |
| 21 Sept. | Partly cloudy | 22° /16° | 4 mm | 6 | |
| 22 Sept. | Patchy rain possible | 22° /15° | 0.2 mm | 5 | |
| 23 Sept. | Patchy rain possible | 22° /15° | 1.6 mm | 5 | |
| 24 Sept. | Sunny | 21° /15° | 2.7 mm | 5 | |
| 25 Sept. | Sunny | 21° /15° | 4.5 mm | 5 | |
| 26 Sept. | Sunny | 21° /15° | 5.1 mm | 5 | |
| 27 Sept. | Patchy rain possible | 21° /15° | 0.4 mm | 5 | |
| 28 Sept. | Sunny | 21° /14° | 0.2 mm | 6 | |
| 29 Sept. | Sunny | 22° /15° | 1.1 mm | 6 | |
| 30 Sept. | Partly cloudy | 24° /15° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Porto 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 Porto forecast closer to your planned date for the most up-to-date weather information.
Change Month
Porto in September - FAQ
What are the expected maximum and minimum temperatures in Porto during September?
During September, expect a variety of temperatures with highs around 22° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Porto during September?
Moderate rainfall is anticipated in Porto during September, with a total of 86.6 mm spread over approximately 23 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Porto during September?
The average wind speed in Porto during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Porto in September?
As you prepare for your trip to Porto 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 Porto, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- 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
September rainfall patterns in Porto
Explore the daily rainfall trends and prepare for Portos September weather 💧
UV exposure in Porto during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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