January 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).

Temperature

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.

Rainfall

The month with the most rainfall in Cascais is January, when the rain falls for 15 days and typically aggregates up to 123mm (4.84") of precipitation.

Sea temperature

In Cascais, the average water temperature is 15.8°C (60.4°F).
Note: Swimming in 15.8°C (60.4°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

In January, the average length of the day in Cascais is 9h and 49min.
On the first day of January, sunrise is at 07:55 and sunset at 17:26. On the last day of the month, sunrise is at 07:44 and sunset at 17:58 WET.

Sunshine

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

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the coldest month in Cascais?

The coldest month in Cascais 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 much does it rain in Cascais in January?

In Cascais, in January, during 15 rainfall days, 123mm (4.84") of precipitation is typically accumulated.

How cold is the water in January in Cascais?

In Cascais, in January, the average water temperature is 15.8°C (60.4°F). Swimming in 15.8°C (60.4°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

What is the average length of the day in January in Cascais?

In Cascais, the average day length in January is 9h and 49min.

What time are sunrise and sunset in January in Cascais?

On the first day of January in Cascais, sunrise is at 07:55 and sunset at 17:26. On the last day of the month, sunrise is at 07:44 and sunset at 17:58 WET.

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 in Cascais.

How long on average sun shines in January in Cascais?

The average sunshine duration in January in Cascais is 5h.

When is the lowest UV index in Cascais?

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

What is the UV index reading in January in Cascais?

In Cascais, Portugal, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health threat from exposure to the Sun's UV radiation.
Average high temperature
Average rainfall days
Average sunshine
Average UV index

Average temperature in January
Cascais, Portugal

Average temperature in January - Cascais, Portugal
  • Average high temperature in January: 14°C

The warmest month (with the highest average high temperature) is August (27°C).
The month with the lowest average high temperature is January (14°C).

  • Average low temperature in January: 8°C

The months with the highest average low temperature are July, August and September (17°C).
The coldest month (with the lowest average low temperature) is January (8°C).

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Average rainfall in January
Cascais, Portugal

Average rainfall in January - Cascais, Portugal
  • Average rainfall in January: 123mm

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 in January
Cascais, Portugal

Average rainfall days in January - Cascais, Portugal
  • Average rainfall days in January: 15 days

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 in January
Cascais, Portugal

Average sea temperature in January - Cascais, Portugal
  • Average sea temperature in January: 15.8°C

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 in January /
Average sunshine in January
Cascais, Portugal

Average daylight in January / Average sunshine in January - Cascais, Portugal
  • Average daylight in January: 9h and 49min

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).

  • Average sunshine in January: 5h

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: 5h).

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Average UV index in January
Cascais, Portugal

Average UV index in January - Cascais, Portugal
  • Average UV index in January: 2

The months with the highest UV index are June and July (UV index 9).
The months with the lowest UV index are January and December (UV index 2).

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