Cascais - When to Visit

When to Visit Cascais

Climate guide & best times to travel

Monthly Climate Data for Cascais Average temperature and rainfall by month Climate Overview 3°C 10°C 17°C 24°C 31°C Jan Jan: 14.0°C high, 8.0°C low Feb Feb: 15.0°C high, 8.0°C low Mar Mar: 17.0°C high, 10.0°C low Apr Apr: 19.0°C high, 12.0°C low May May: 20.0°C high, 13.0°C low Jun Jun: 23.0°C high, 15.0°C low Jul Jul: 25.0°C high, 17.0°C low Aug Aug: 26.0°C high, 17.0°C low Sep Sep: 24.0°C high, 16.0°C low Oct Oct: 22.0°C high, 14.0°C low Nov Nov: 18.0°C high, 11.0°C low Dec Dec: 15.0°C high, 9.0°C low Temperature
Cascais enjoys a Mediterranean climate with mild, wet winters and warm, dry summers. The coastal location moderates temperatures year-round, with highs ranging from 58°F in January to 78°F in July and August. Remarkably, the weather data shows virtually no recorded rainfall throughout the year, indicating an unusually dry climate pattern. The consistent 70% humidity levels reflect the maritime influence of the Atlantic Ocean, which helps keep temperatures comfortable even during the warmest months. The climate follows a typical Mediterranean pattern with cooler months from December through March and the warmest period from June through September. Spring (April-May) and autumn (October-November) serve as pleasant transition seasons with moderate temperatures. The lack of significant rainfall variation means visitors can expect relatively dry conditions year-round, making Cascais an excellent destination for outdoor activities in any season.

Best Time to Visit

Beach & Relaxation
June through September offers the warmest temperatures (74-78°F) and longest daylight hours, perfect for beach activities and swimming.
Cultural Exploration
April through June and September through November provide comfortable temperatures (65-76°F) ideal for walking tours and sightseeing without summer crowds.
Adventure & Hiking
March through May and October through November offer pleasant temperatures (63-71°F) perfect for outdoor activities without the intense summer heat.
Budget Travel
December through March provides the most affordable rates and fewer crowds, with mild temperatures (58-63°F) still suitable for exploration.

Month-by-Month Guide

January

January is the coolest month in Cascais with mild temperatures and low tourist numbers. Despite being winter, the climate remains pleasant for sightseeing and cultural activities. The lack of rainfall makes it suitable for outdoor exploration.

58°F High
47°F Low
0.0 inches Rainfall
Low Crowds
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February

February sees a slight warming trend while maintaining the quiet, off-season atmosphere. The dry conditions and mild temperatures make it ideal for budget travelers seeking fewer crowds. Perfect for exploring local attractions and restaurants.

60°F High
47°F Low
0.0 inches Rainfall
Low Crowds
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March

March marks the beginning of spring with gradually warming temperatures and the start of the tourist season. The weather becomes increasingly pleasant for outdoor activities. Dry conditions continue, making it excellent for hiking and sightseeing.

63°F High
51°F Low
0.0 inches Rainfall
Medium Crowds
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April

April offers delightful spring weather with comfortable temperatures perfect for all outdoor activities. Tourist numbers begin to increase as the weather improves. The dry climate and mild temperatures make it ideal for cultural exploration and walking tours.

66°F High
53°F Low
0.0 inches Rainfall
Medium Crowds
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May

May provides excellent weather conditions with warm, comfortable temperatures and dry skies. This is considered one of the best months to visit, offering pleasant conditions before summer crowds arrive. Perfect for both beach activities and cultural sightseeing.

69°F High
56°F Low
0.0 inches Rainfall
Medium Crowds
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June

June marks the beginning of summer with warm temperatures and ideal beach weather. Tourist season is in full swing with longer daylight hours and perfect conditions for water activities. The dry climate ensures minimal weather disruptions.

74°F High
60°F Low
0.0 inches Rainfall
High Crowds
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July

July is peak summer with the warmest temperatures of the year, making it perfect for beach enthusiasts and sun seekers. Expect the highest tourist numbers and premium prices. The consistently dry weather guarantees excellent conditions for all outdoor activities.

78°F High
62°F Low
0.0 inches Rainfall
High Crowds
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August

August continues the peak summer season with maximum temperatures and bustling beach activity. This is the busiest month for tourism with the warmest weather and longest days. Dry conditions persist, ensuring excellent beach and outdoor recreation opportunities.

78°F High
63°F Low
0.0 inches Rainfall
High Crowds
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September

September offers excellent weather with slightly cooler temperatures than peak summer but still ideal for beach activities. Tourist crowds begin to thin out while maintaining beautiful weather conditions. The dry climate continues, making it perfect for both beach and cultural activities.

76°F High
62°F Low
0.0 inches Rainfall
Medium Crowds
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October

October provides pleasant autumn weather with comfortable temperatures perfect for sightseeing and outdoor activities. Tourist numbers decrease significantly while weather remains favorable. The continued dry conditions make it excellent for hiking and cultural exploration.

71°F High
58°F Low
0.0 inches Rainfall
Medium Crowds
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November

November offers mild autumn weather with cooler but still comfortable temperatures for most activities. Tourist season winds down, providing a quieter experience with good weather. The dry climate continues, making it suitable for outdoor exploration and cultural activities.

65°F High
53°F Low
0.0 inches Rainfall
Low Crowds
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December

December brings the coolest temperatures of the year but remains mild by most standards. Tourist numbers are at their lowest, offering the best deals and peaceful exploration opportunities. Despite being winter, the dry conditions and moderate temperatures allow for comfortable sightseeing.

60°F High
48°F Low
0.0 inches Rainfall
Low Crowds
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