Early autumn · Weather & things to do
Porto in September
Porto edges cooler than August, with highs of 74°F (23°C), lows of 60°F (15°C) and about 1.9 in (49 mm) of rain.
At 95/100 for comfort (3rd of 12), it's one of the best months to visit.
- Avg high
- 74°F (23°C)
- Avg low
- 60°F (15°C)
- Rain
- 1.9 in (49 mm)
- Humidity
- 73%
- Cloud cover
- 36%
- Daylight
- ~12 h 16 min
- Comfort score
- 95/100 · Great
What September feels like
Days are warm, averaging 74°F (23°C), easy weather for being outside from morning to evening.
Lows average 60°F (15°C).
Rain is moderate at about 1.9 in (49 mm) for the month.
Plan around September
September is one of Porto's best months on the climate data.
- Last warm month for a while: October highs fall to 68°F.
- Last dry month before the rain picks up: October brings 5.4 in (137 mm).
- Last of the best-scoring months: by October, the score drops to 82/100.
- Comfort slips from 98/100 in August to 95/100.
- Our Portugal by Rail route recommends Apr – Jun, so September falls outside its suggested window.
What to pack for September
- Light, breathable clotheshighs average 74°F
- Sunscreen, sunglasses and a hathigh UV on clear days
- Comfortable walking shoesmost picks involve some walking
What to do in Porto in September
September is good outdoor weather here, so these picks lean toward the open air.
Torre dos Clérigos
Baroque bell tower with a 240-step climb to a city view.
Dom Luís I Bridge
Double-deck iron bridge; walk the top level for the classic view.
Why now September scores 95/100 for comfort, good conditions for being outside.
São Bento Station
Train station hall lined with 20,000 azulejo tiles of Portuguese history.
Livraria Lello
Neo-Gothic bookstore with a carved red staircase.
Mercado do Bolhão
Restored 19th-century market with produce, fish and small food stalls.
Nearby in September
- Coimbra in September~67 mi · highs 86°F, 1.6 in rain · 7°C (12°F) warmer by day, about as wet
- Lisbon in September~170 mi · highs 72°F, 1.0 in rain · 1°C (2°F) cooler by day, drier
- Seville in September~296 mi · highs 90°F, 0.9 in rain · 9°C (16°F) warmer by day, drier
- Córdoba in September~305 mi · highs 90°F, 1.1 in rain · 9°C (16°F) warmer by day, drier
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Porto in September: quick answers
Is September a good time to visit Porto?
Yes. On the climate data it's one of the best months, scoring 95/100. Expect highs of 74°F (23°C) and 1.9 in (49 mm) of rain. Our Portugal by Rail route recommends Apr – Jun, so September is outside its suggested window.
How hot is Porto in September?
Average highs are 74°F (23°C) and average lows 60°F (15°C), making it the 3rd-warmest month by daytime highs.
Does it rain a lot in Porto in September?
Not much: about 1.9 in (49 mm) of rain falls across September on average, the 4th-driest month of the year. The annual total is about 39.8 in (1010 mm).
What should I pack for Porto in September?
Bring light, breathable clothes (highs average 74°F), sunscreen, sunglasses and a hat (high UV on clear days) and comfortable walking shoes (most picks involve some walking).
Planning Porto in September?
Share this September plan with your group, poll everyone on dates and keep the packing list in one place.