Porto weather in September
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Porto September weather at a glance
In September, Porto averages 18.2°C, with typical highs of 22.4°C and lows of 14.7°C. The historical average is 7 wet days and 74% humidity.
Porto September temperature & humidity
Porto September rain & wet days
Pack a compact umbrella. Keep an indoor stop available between outdoor activities.
What to wear in Porto in September
T-shirts or long sleeves with one light outer layer should be comfortable.
- DaytimeLong sleeves and a light jacket · average high 22.4°C
- Morning & eveningLong sleeves with a jacket or cardigan · average low 14.7°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
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Porto September sunrise & sunset times
2026 September · Local time (Europe/Lisbon)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-09-01 | 07:01 | 20:07 | 13h 6m |
| 2026-09-15 | 07:15 | 19:44 | 12h 29m |
| 2026-09-30 | 07:30 | 19:18 | 11h 48m |
For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.
Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup
Porto travel updates
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Today’s weather and forecast
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Forecast · Windy. Monthly averages are in the Temperature section.
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Porto city map
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Porto travel essentials
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Best months to visit Porto
Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.
September weather by year
Daily weather in 2025
Daily high and low temperatures; blue labels show precipitation
Frequently asked questions
What is Porto weather like in September?
In September, Porto averages 18.2°C, with typical highs of 22.4°C and lows of 14.7°C. The historical average is 7 wet days and 74% humidity. Our weather-comfort rating for this month is excellent.
Does it rain a lot in Porto in September?
There are about 7 wet days in September. A compact umbrella is still useful.
What should I wear in Porto in September?
T-shirts or long sleeves with one light outer layer should be comfortable.
What are the best months to visit Porto?
Recent weather data rates May, June, July, August among the more comfortable months.
Where can I check Porto weather in September in real time?
Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.
What time are sunrise and sunset in Porto in September?
On 2026-09-15, calculated sunrise is 07:15 and sunset is 19:44 in local time (Europe/Lisbon). Times vary by date and terrain.
Porto weather by month
More Europe destinations in September
Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations