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Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the Headlines UK weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above before heading out in Cascais. The coastal town has a mild Atlantic climate, so conditions can shift quickly between sunshine and sea breezes, especially in autumn and winter.
What is the weather like in Cascais right now?
The live forecast above gives you the current temperature, wind speed, and chance of rain for Cascais. For a more detailed view, use the 10 day weather forecast UK tools, which also cover Portugal. If you need to plan around the sea breeze, check the UK weather hub for general wind patterns, though local conditions in Cascais vary.
What is the best time of year to visit Cascais?
June to September offers the warmest and driest weather, with average highs around 25–28°C. For cascais weather by month, spring (March to May) and autumn (October) are pleasant with fewer crowds. Winter months like cascais weather november and cascais weather december are cooler and wetter, but still mild compared to northern Europe.
Frequently Asked Questions
How accurate is the 14-day forecast for Cascais?
Forecasts beyond 7 days have lower accuracy. For cascais weather 14 days or cascais weather 30 days, treat them as a general trend. Check the live forecast above for the most reliable short-term outlook.
Does Cascais get foggy?
Yes, especially in spring and early summer. Morning fog or low cloud often burns off by midday. The cascais weather hourly view in the live forecast above helps you plan around this.
What is the 21-day weather outlook for Cascais?
A 21 day weather cascais portugal forecast gives a broad idea of temperature trends and rain chances, but day-to-day details are unreliable. Use the live forecast above for the next week and check back closer to your trip.