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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 Portugal is warm and largely sunny, with daytime highs around 22–25°C in the Algarve and Lisbon, though evenings cool off. Sea temperatures remain swimmable along the south coast, and rainfall is moderate but increases later in the month – a dependable shoulder-season choice.
Is October a good time for a holiday in Portugal?
Yes – October offers a sweet spot of pleasant warmth without the peak-summer crowds, making it ideal for sightseeing and beach walks. The Algarve stays particularly inviting, while Lisbon and Porto enjoy clear days perfect for exploring. For a comparison of early-autumn conditions, see our October weather for Malta.
What to wear in Portugal in October
Pack layers: light tops, jeans or trousers, a jumper or cardigan for evenings, and a light waterproof jacket in case of showers. Comfortable walking shoes are essential. For the beach, bring a swimsuit – the sea in the Algarve is still pleasant for a dip, especially early in the month. The live forecast above will help you decide exactly what to pack.
Frequently asked questions
Can you swim in the sea in Portugal in October?
Yes, especially in the Algarve where sea temperatures hover around 19–21°C. Many visitors find it comfortable for swimming, though the Atlantic coast north of Lisbon will feel cooler. Wetsuits are not needed for a short swim.
Is the Algarve still warm in late October?
Daytime highs in the Algarve typically reach 21–23°C until late October, with plenty of sun. Evenings cool to around 14°C, so a jacket is wise. Rain is possible but usually short-lived. For conditions earlier in autumn, check Crete weather in October.
How does Portugal’s October weather compare to November?
October is noticeably warmer and drier than November. By November, temperatures drop by 3–5°C, rainfall increases, and the chance of extended sunny spells diminishes. October remains firmly in the shoulder season; November marks the start of winter-like conditions.
Sources
For a broader view, visit our UK weather hub or check the 10‑day weather forecast for the UK. If you’re considering later autumn, see our guide to portugal weather november. For earlier autumn, portugal weather september is warmer and drier. Specific destinations: lisbon weather october is typically mild, while lagos portugal weather october and algarve weather october november reflect the region’s extra sun. Remember what to wear in portugal in october – layers and a light rain jacket.