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October is the month when a trip planned for late summer meets the wet season. Porto weather october is still pleasantly warm by day, but rain more than doubles from September. Pack for both, and keep outdoor plans flexible. The day still averages 20.7 °C, close to May, but October's 158.3 mm of rain is almost twice May's, so an umbrella and a flexible plan are part of the trip.
The river and the valley, for the drier days of the month.
Our pickPorto: Six Bridges Cruise
About 50 minutes on the river under the six bridges
A first look at the city from the water
Porto: Douro Valley with Lunch (Optional), Tastings & Cruise
A full day in the valley with tastings and a cruise; lunch optional
A dry day for the Douro
Warm enough, much wetter
The Porto weather october average temperature is a high of 20.7 °C (69.3 °F) and a low of 12.2 °C (54.0 °F), milder than any month from November to April.
Rain is the change that matters: 158.3 mm (6.2 in) on average, against September's 71.9 mm (2.8 in), making October the third wettest month. Sunshine drops to 184 hours. The IPMA forecast is worth reading before any outing that needs a dry day.
October is the month when Porto's wet season arrives, even though the temperatures still feel mild. The daytime high of 20.7 °C is close to May's, but rainfall at 158.3 mm is almost twice May's 89.6 mm. Sunshine drops to 184 hours, about 40 hours fewer than September.
The combination makes October a month of pleasant dry days broken up by wetter spells, rather than a steady autumn.
October is milder than any month from November to April.Late October and November
The Porto weather late october average temperature leans towards November, which averages 17.1 °C (62.8 °F) by day and 8.9 °C (48.0 °F) at night, with 172.0 mm (6.8 in) of rain. The Porto october weather averages sit between the two seasons: warm like spring, wet like winter.
Plan museums and port cellars as the backbone and fit the river around the dry spells. See September, November and the year on the Porto weather page.
A good October plan keeps a fixed core of indoor visits, such as the cellars in Gaia and the museums, and fits outdoor outings around the forecast. A river cruise or a day in the valley works well on a dry day, and booking with free cancellation makes it easy to move.
For clothes, pack layers for days around 21 °C and evenings around 12 °C, a waterproof jacket and shoes with grip for wet streets. An umbrella is worth carrying every day. Compared with November, October is warmer by about 3.6 degrees and a little drier, so earlier in the month is usually the better bet for outdoor plans.
October against the months either side
| Month | Average high | Average low | Rainfall | Sunshine |
|---|---|---|---|---|
| September | 24.1 °C (75.4 °F) | 14.7 °C (58.5 °F) | 71.9 mm | 224 h |
| October | 20.7 °C (69.3 °F) | 12.2 °C (54.0 °F) | 158.3 mm | 184 h |
| November | 17.1 °C (62.8 °F) | 8.9 °C (48.0 °F) | 172.0 mm | 139 h |
- Average high
- 24.1 °C (75.4 °F)
- Average low
- 14.7 °C (58.5 °F)
- Rainfall
- 71.9 mm
- Sunshine
- 224 h
- Average high
- 20.7 °C (69.3 °F)
- Average low
- 12.2 °C (54.0 °F)
- Rainfall
- 158.3 mm
- Sunshine
- 184 h
- Average high
- 17.1 °C (62.8 °F)
- Average low
- 8.9 °C (48.0 °F)
- Rainfall
- 172.0 mm
- Sunshine
- 139 h
Common questions
Is October rainy in Porto?
Yes. It averages 158.3 mm of rain, more than twice September.
How warm is Porto in October?
Days average 20.7 °C and nights 12.2 °C, still mild.
Is October a good month for a Douro Valley trip?
On a dry day, yes; the rain is the risk, so choose a tour with free cancellation.