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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the WordPatch weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
October in Porto brings mild, mostly pleasant days with average highs around 20°C (68°F), but rain becomes more frequent as the month progresses—pack a light jacket and an umbrella, and expect quieter streets after the summer crowds have gone.
What’s the weather actually like in Porto during October?
The live forecast above shows the current conditions, but for the month as a whole you can expect daytime temperatures between 17°C and 22°C, dropping to 12–15°C at night. Rainfall increases through October, with about 10–13 wet days and around 100–130mm total precipitation. Sunshine still averages 5–6 hours per day, giving you decent windows for exploring. Sea temperatures remain swimmable at roughly 18°C, though most visitors prefer the heated hotel pool by late October.
When’s the best time to visit Porto in October, and what should you pack?
The first half of October is generally drier and warmer, making it the better window for sightseeing and day trips to the Douro Valley. By the second half, storms become more likely and temperatures edge cooler. Pack layers: a waterproof jacket, comfortable walking shoes, a couple of long-sleeved shirts, and a light sweater. An umbrella is essential. If you’re comparing with Lisbon weather in October, Porto tends to be a few degrees cooler and rainier, so plan accordingly. For travellers heading south later, Bristol Weather offers a useful UK comparison point for similar maritime conditions.
Is Porto rainy in October?
Yes, October is one of the wetter months in Porto, averaging 10–13 days of rain. However, showers are often short and followed by clear spells, so it rarely ruins a whole day. Carry a compact umbrella and you’ll be fine.
How does Porto weather in October compare to September and November?
September is warmer and drier (highs around 24°C, fewer rain days), while November is noticeably cooler and wetter (highs near 16°C, rain on half the days). October sits in the middle, offering a good balance for travellers who want mild weather without the summer crowds.
What’s the temperature in Porto in October in Celsius?
Daily highs range from 18°C to 22°C, with overnight lows of 12–15°C. You’ll rarely see extremes, though a warm autumn day can feel like summer. Check the live forecast above for the exact reading on your travel dates.
Sources
For broader seasonal planning, see our Porto weather guide or check 10 Day Weather Forecast UK for comparisons with home conditions. If you’re visiting later in autumn, Porto weather November gives the specifics for that month. For those also considering the capital, our Lisbon weather October page covers the differences. And if you’re wondering about Porto weather September, that page highlights the last of the summer heat. For a broader view of weather in Portugal in October November, we’ve got you covered too.