Month guide · Porto · Portugal
Porto in September
What September is really like in Porto: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: Diego Delso, CC BY-SA 3.0
Quick answer
September is one of the best months to visit Porto. Expect average highs of 24°C (75°F), lows of 14°C (57°F), about 6 rainy days and roughly 12.4 hours of daylight. Warm and settled, with grape harvest season beginning in the Douro Valley.
Key facts
- Average high / low
- 24°C (75°F) / 14°C (57°F)
- Rainy days
- About 6
- Daylight
- About 12.4 hours
- Sea temperature
- 18°C (64°F)
- Crowds
- Busy
- Hotel prices
- High
Weather in September
September is the 3rd-warmest month in Porto: days average 24°C (75°F) against a yearly average high of 19°C (66°F), and nights fall to about 14°C (57°F). Rain falls on roughly 6 of its 30 days. Compared with August (25°C (77°F)), September is about as warm; by October highs drop to around 21°C (70°F).
- Sunrise (15 September)
- About 07:15
- Sunset (15 September)
- About 19:44
- Daylight
- About 12.4 hours
- Sea
- 18°C (64°F)
Autumn (September–November). Warm early autumn and harvest time in the Douro Valley, turning wet and cool by November.
Crowds and prices
On a 1–5 scale, September rates 4 for crowds (the peak is June at 5) and 4 for hotel prices (highest in June). Book accommodation early: September is one of the pricier months.
Events in September
- Douro Valley grape harvest (usually September to early October)
Dates move from year to year. Check the organiser’s site before booking travel around an event.
What to do in September
Mild, settled days suit walking, viewpoints and time outdoors.
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Religious site · Sé
Porto Cathedral (Sé)
Visit the cloister and upper terrace for the tiles and views, then walk down through the Barredo lanes to the river.
- Time needed
- 1 hour
- Cost
- Low cost
- History
- Architecture
- Views
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Museum · Boavista
Serralves Museum and Park
Porto's main contemporary art museum occupies a white building by Álvaro Siza, set in large gardens with an Art Deco villa, a farm, woodland, a treetop walkway and outdoor sculptures.
- Time needed
- 3–4 hours
- Cost
- Mid-priced
- Art
- Outdoors
- Architecture
- Kids
Garden · Massarelos
Jardins do Palácio de Cristal
Head for the terraces on the southern edge at sunset, a favourite local picnic spot.
- Time needed
- 1 hour
- Cost
- Free
- Free
- Views
- Kids
- Couples
- Outdoors
Waterfront · Foz do Douro
Foz do Douro and the seafront
Where the Douro meets the Atlantic, a promenade runs past the Felgueiras lighthouse and its breakwater, the art deco Pérgola da Foz and small sandy coves towards the Castelo do Queijo fort.
- Time needed
- Half a day
- Cost
- Free
- Free
- Outdoors
- Views
- Couples
What to pack
For highs near 24°C, lows near 14°C and 6 wet days: light layers for the day and a light jacket for the evening; comfortable walking shoes.
Is September a good time to visit Porto?
One of the best months to visit Porto, with a notable event on the calendar. The other best months are May–June and October. Compare every month.
Porto in other months
Questions travellers ask
+Is September a good time to visit Porto?
It is one of the best months to visit Porto. Warm and settled, with grape harvest season beginning in the Douro Valley.
+How warm is Porto in September?
Average highs are around 24°C (75°F) and lows around 14°C (57°F).
+Does it rain a lot in Porto in September?
Expect rain on about 6 days of the month.