Climate and monthly weather forecast
Cascais, Portugal

Weather in January

January, the same as December, in Cascais, Portugal, is a moderate winter month, with temperature in the range of an average low of 8°C (46.4°F) and an average high of 14°C (57.2°F). With an average high-temperature of 14°C (57.2°F) and an average low-temperature of 8°C (46.4°F), January is the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is also a moderate month in Cascais, Portugal, with an average temperature varying between 9°C (48.2°F) and 15°C (59°F). In Cascais, the average high-temperature in February is relatively the same as in January - a still moderate 15°C (59°F). Weather in February »

Weather in March

The first month of the spring, March, is an enjoyable month in Cascais, Portugal, with an average temperature fluctuating between 17°C (62.6°F) and 10°C (50°F). In March, the average high-temperature is essentially the same as in February - an enjoyable 17°C (62.6°F). Weather in March »

Weather in April

April, like March, in Cascais, Portugal, is another enjoyable spring month, with temperature in the range of an average low of 11°C (51.8°F) and an average high of 18°C (64.4°F). In Cascais, the average high-temperature in April is practically the same as in March - a still enjoyable 18°C (64.4°F). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Cascais, Portugal, with an average temperature varying between 13°C (55.4°F) and 21°C (69.8°F). In Cascais, the average high-temperature in May marginally rises from an enjoyable 18°C (64.4°F) in April to a pleasant 21°C (69.8°F). Weather in May »

Weather in June

June, the first month of the summer in Cascais, is a warm month, with an average temperature varying between 15°C (59°F) and 24°C (75.2°F). In Cascais, the average high-temperature in June marginally rises from a pleasant 21°C (69.8°F) in May to a moderately hot 24°C (75.2°F). Weather in June »

Weather in July

July, like June, in Cascais, Portugal, is another warm summer month, with an average temperature varying between 17°C (62.6°F) and 26°C (78.8°F). In Cascais, Portugal, the average high-temperature in July is practically the same as in June - a still warm 26°C (78.8°F). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Cascais, Portugal, with temperature in the range of an average low of 17°C (62.6°F) and an average high of 27°C (80.6°F). August is the warmest month, with an average high-temperature of 27°C (80.6°F) and an average low-temperature of 17°C (62.6°F). In August, the rain falls for 2 days. Weather in August »

Weather in September

September, the first month of the autumn in Cascais, is also a moderately hot month, with an average temperature varying between 17°C (62.6°F) and 26°C (78.8°F). In Cascais, the average high-temperature in September is essentially the same as in August - a still moderately hot 26°C (78.8°F). Weather in September »

Weather in October

October, like September, is another pleasant autumn month in Cascais, Portugal, with temperature in the range of an average high of 22°C (71.6°F) and an average low of 14°C (57.2°F). In October, the average high-temperature marginally drops from a moderately hot 26°C (78.8°F) in September to a pleasant 22°C (71.6°F). Weather in October »

Weather in November

November, the last month of the autumn in Cascais, is another comfortable month, with an average temperature ranging between max 17°C (62.6°F) and min 11°C (51.8°F). In Cascais, the average high-temperature in November decreases from a pleasant 22°C (71.6°F) in October to an enjoyable 17°C (62.6°F). Weather in November »

Weather in December

The first month of the winter, December, is still a mild month in Cascais, Portugal, with an average temperature fluctuating between 9°C (48.2°F) and 15°C (59°F). In Cascais, the average high-temperature in December is essentially the same as in November - a mild 15°C (59°F). Weather in December »
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FAQ

What is the coldest month in Cascais?

The coldest month is January, with an average high-temperature of 14°C (57.2°F) and an average low-temperature of 8°C (46.4°F).

What is the wettest month in Cascais?

January is the month with the most rainfall in Cascais. Rain falls for 15 days and accumulates 123mm (4.84") of precipitation.

How many days does it rain in Cascais?

In Cascais, during the entire year, the rain falls for 116 days and collects up to 841mm (33.11") of precipitation.

What is the month with the least sunshine in Cascais?

January, February, November and December, with an average of 5h of sunshine, are months with the least sunshine.

When is the lowest UV index in Cascais?

The months with the lowest UV index in Cascais are January and December, with an average maximum UV index of 2.

What month is the sea coldest in Cascais?

The month with the coldest seawater is March, with an average sea temperature of 15.1°C (59.2°F).

When is Daylight Saving Time (DST) in Cascais?

On Sunday, 27. March 2022, at 01:00, Daylight Saving Time starts in Cascais, and the time zone changes from WET to WEST. Daylight Saving Time ends on Sunday, 30. October 2022, at 02:00, and the time zone reverts from WEST to WET.

When are the longest days in Cascais?

With an average of 14h and 50min of daylight, June has the longest days of the year.

What are the months with the highest UV index in Cascais?

The months with the highest UV index are June and July, with an average maximum UV index of 9.

What is the driest month in Cascais?

The month with the least rainfall is July, when the rain falls for 2 days and typically collects 7mm (0.28") of precipitation.

What are the months with the most sunshine in Cascais?

July and August, with an average of 11h of sunshine, are months with the most sunshine in Cascais, Portugal.

What is the warmest month in Cascais?

With an average high-temperature of 27°C (80.6°F) and an average low-temperature of 17°C (62.6°F), August is the warmest month in Cascais.

What is the month with the warmest sea water in Cascais?

With an average sea temperature of 19.9°C (67.8°F), September is the month with the warmest seawater in Cascais, Portugal.

What is the month with the shortest days in Cascais?

December has the shortest days of the year in Cascais, with an average of 9h and 31min of daylight.

Average rainfall
Cascais, Portugal

Average rainfall - Cascais, Portugal

The wettest month (with the highest rainfall) is January (123mm).
The driest month (with the least rainfall) is July (7mm).

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Average rainfall days
Cascais, Portugal

Average rainfall days - Cascais, Portugal

The month with the highest number of rainy days is January (15 days).
The months with the least rainy days are July and August (2 days).

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Average sea temperature
Cascais, Portugal

Average sea temperature - Cascais, Portugal

The best month for swimming (with the highest average sea temperature) is September (19.9°C).
The coldest month (with the lowest average sea temperature) is March (15.1°C).

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Average daylight / Average sunshine
Cascais, Portugal

Average daylight / Average sunshine - Cascais, Portugal

The month with the longest days is June (Average daylight: 14h and 50min).
The month with the shortest days is December (Average daylight: 9h and 31min).

The months with the most sunshine are July and August (Average sunshine: 11h).
The months with the least sunshine are January, February, November and December (Average sunshine: 5).

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