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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Norwich Wire weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Cascais, Portugal, sits under a Mediterranean climate with daytime highs ranging from 15°C in January to 28°C in August. The live forecast above shows the current conditions for this coastal town, where Atlantic breezes keep summer heat manageable and winter chill moderate.
What is the typical weather pattern in Cascais?
Cascais enjoys mild, wet winters and warm, dry summers. From November to February, average highs hover between 15°C and 17°C, with rainfall peaking in December (around 100mm). Summer months from June to September see highs of 25–28°C, with July and August virtually rain-free. The Atlantic influence means sea temperatures rarely drop below 15°C in winter or exceed 22°C in summer, making it a year-round destination for walkers and surfers.
How does the forecast vary over longer periods?
For those planning ahead, the cascais weather 14 days outlook typically shows consistent patterns: a mix of sun and cloud in spring and autumn, with stable high pressure dominating summer. The cascais weather 30 days forecast relies on broader climate trends — expect cooler, wetter conditions from November to March, and dry, settled weather from June to September. For cascais weather by month, November averages 10–17°C with increasing rain, while December sees 9–15°C and the highest rainfall of the year. The 21 day weather cascais portugal forecast is useful for tracking Atlantic fronts that can bring brief, heavy showers even in relatively dry months.
What is the weather like in Cascais in November?
Cascais weather november averages 10–17°C with around 10 rainy days. It’s cooler and damper than autumn, but still pleasant for coastal walks and sightseeing, with fewer tourists.
What is the weather like in Cascais in December?
Cascais weather december sees highs of 15°C and lows of 9°C, with the highest rainfall of the year. It’s a quiet, atmospheric time to visit, with occasional sunny spells between showers.
Can I get an hourly breakdown for Cascais?
Yes, the cascais weather hourly view is available in the live forecast above. It shows temperature, wind speed, and precipitation chances for each hour, ideal for planning beach trips or outdoor activities.
Sources
For more UK-focused forecasts, see our UK weather hub or the 10 Day Weather Forecast UK. For comparisons with other coastal cities, check Bristol Weather.