Retirement Lists

Climate in Cascais, Portugal

Panorama da costa de Cascais, na zona da Guia.
Photo by Rúdisicyon via Wikimedia Commons, CC BY-SA 4.0

Cascais climate

Cascais offers a mild Atlantic pattern with wet winters and hot sunny periods

The IPMA Lisboa and Instituto Geofísico 1991 to 2020 normal is a nearby regional station reference, not a Cascais station. It reports an annual mean of 17.6°C, monthly mean temperatures from 11.8°C in January to 23.8°C in August, average highs up to 28.8°C in August and annual precipitation of 793.5 millimetres. The station is at 77 metres, so coastal wind, elevation and neighborhood exposure can differ.

The current modeled reading is 18.3°C, 84 percent humidity and AQI 40. These values describe present coordinate conditions only. They are not long term Cascais averages, local monitor observations or personal forecasts, so keep them separate from the nearby Lisboa station normal.

Living through the seasons

Summer and winter comfort tell a similar story.

Overall Comfort
Excellent

4.7 / 5

Average Summer High
72°F

Mild · 72°F

Days Above 90°F
0 days/year

Excellent

Summer Feel
Excellent

4.8 / 5

Average Winter Low
53°F / 12°C

Excellent

Days Below Freezing
0 days/year

Excellent

Winter Feel
Excellent

4.7 / 5

The shape of the year

Humidity, comfortable months, and sunshine show how the seasons differ.

Humidity
81%

Poor

Comfortable Months
11 months

Excellent

Solar Exposure
1757 peak sun hrs/yr

Fair

Air, allergies, and weather

Air quality and allergies shape day to day comfort. The best months and weather risks help with timing.

Air and allergies

Air Quality
Excellent

4.7 / 5

Allergy Levels
Poor

Current AQI

Checking…

Current PM2.5

Checking…

Timing and weather

Long Term Fine Particle Pollution
7.2 µg/m³ 2021-2025 modeled average

Good · 7.2 µg/m³ 2021-2025 modeled average

Best Months
Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
Toughest Months
Jan
Heat Risk
Low

Very Good

Drought Risk
Medium (0.4-0.6)
Weather Volatility
Strong

4 / 5

Cascais in everyday life

Could Cascais work for you?

What may work well

  • Moderate Atlantic temperatures and coastal outdoor options may suit a retiree who prefers less extreme cold.
  • The nearby IPMA station normal provides a clear reference for seasonal change, dry summer conditions and annual rain.
  • Museums, cultural places, parks, gardens and indoor activities can support a varied calendar when weather changes outdoor plans.

What to think about

  • Wet winter periods, wind, summer sun, hot spells and coastal exposure can change comfort and mobility.
  • Current modeled readings are not long term averages, local monitor observations or personal forecasts.
  • Heating, cooling, ventilation, damp prevention, shade and energy costs can decide whether one home works.

Experience Cascais weather before committing

  1. Visit in more than one season

    Notice cool evenings, rain, wind, summer heat, shade, indoor dampness, daylight and how much outdoor time feels comfortable from the exact home.

  2. Inspect the home systems

    Ask about heating, cooling, insulation, windows, ventilation, energy use, maintenance, damp prevention, shade and repair responsibility.

  3. Walk the weather route

    Follow the path to groceries, pharmacy, care, MobiCascais, rail, beach and social places in rain or heat, including shelter, crossings, wind and return time.

  4. Keep readings properly labeled

    Record current modeled temperature, humidity and AQI as present conditions, then use the Lisboa and Instituto Geofísico normal for longer term planning.

Questions retirees ask

Is Cascais warm all year?

No. The nearby IPMA normal shows cool winter months, warm summer highs and seasonal rain. Inspect heating, ventilation, damp prevention, shade and cooling.

What does the current 18.3°C reading tell me?

It describes a current modeled coordinate reading. It is not a long term Cascais average, a station observation or a personal forecast.

Is humidity a concern in Cascais?

The current modeled humidity is 84 percent, while conditions vary by season and coastal exposure. Check ventilation, windows, heating, cooling and damp prevention.

Can the coast make Cascais climate easier?

The coast can add outdoor options and wind, but it does not remove rain, summer sun, heat, dampness or changing surfaces. Judge the home and daily route together.

What is the best climate visit plan?

Visit in a pleasant period and a wet or hot period if possible. Record indoor comfort, energy use, wind, shelter, surfaces and the route to food, care and transport.

Cascais climate planning is strongest when the nearby IPMA normal, present modeled readings, indoor systems, coastal exposure and the wet or hot daily route are considered together. Save the weather notes, Compare another city, and choose Find my fit after the home works beyond a holiday day.

Sources

Climate comfort helps estimate how practical daily life may feel across the year, especially for heat, humidity, cold, and seasonal constraints.

Seasonal timing, health conditions, air conditioning, air quality, and elevation can change the lived experience.

  • NASA POWER

    Used for Overall Comfort, Summer Feel, Average Summer High, Days Above 90°F, Winter Feel, Average Winter Low, Days Below Freezing, Humidity, Comfortable Months, Solar Exposure, Best Months, Toughest Months, Allergy Levels, Heat Risk, Weather Volatility

  • Open-Meteo / Copernicus CAMS

    Used for Air Quality, Long-Term Fine-Particle Pollution

    Checked 2026-05-18

  • World Resources Institute (WRI)

    Used for Drought Risk

    Checked 2026-07-13

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