December weather forecast
Lagos, Portugal

Weather in December

December, the first month of the winter in Lagos, is still a comfortable month, with an average temperature ranging between max 16.4°C (61.5°F) and min 13.4°C (56.1°F).

Temperature

In December, the average high-temperature is relatively the same as in November - a still comfortable 16.4°C (61.5°F). The average low-temperature, in December, is 13.4°C (56.1°F).

Humidity

The average relative humidity in December is 74%.

Rainfall

In Lagos, Portugal, during 7.1 rainfall days, 12mm (0.47") of precipitation is typically accumulated. In Lagos, during the entire year, the rain falls for 70.2 days and collects up to 95mm (3.74") of precipitation.

Sea temperature

In Lagos, in December, the average water temperature is 17.4°C (63.3°F).
Note: For swimming, a surface water temperature of 17.4°C (63.3°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

Daylight

December has the shortest days of the year, with an average of 9h and 40min of daylight.
On the first day of December, sunrise is at 07:29 and sunset at 17:17. On the last day of the month, sunrise is at 07:47 and sunset at 17:27 WET.

Sunshine

In Lagos, the average sunshine in December is 6.4h.

UV index

The months with the lowest UV index in Lagos are January through March, November and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 4 in December transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 average humidity in December in Lagos?

In December, the average relative humidity in Lagos is 74%.

How many days does it rain in December in Lagos?

In December, in Lagos, the rain falls for 7.1 days. Throughout December, 12mm (0.47") of precipitation is accumulated.

What is the sea water temperature in December in Lagos?

In December, the average sea temperature in Lagos, Portugal, is 17.4°C (63.3°F). For swimming, a surface water temperature of 17.4°C (63.3°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

What is the month with the shortest days in Lagos?

With an average of 9h and 40min of daylight, December has the shortest days of the year in Lagos, Portugal.

What is the average length of the day in December in Lagos?

In Lagos, Portugal, the average day length in December is 9h and 40min.

When is the sunrise / sunset in December in Lagos?

In December, on the first day of the month, sunrise is at 07:29 and sunset at 17:17. On the last day of the month, sunrise is at 07:47 and sunset at 17:27 WET.

How many hours of sunshine does Lagos have in December?

In Lagos, Portugal, the average sunshine duration in December is 6.4h.

When is the lowest UV index in Lagos?

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index.

What is the UV index reading in December in Lagos?

In Lagos, the average daily maximum UV index in December is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.

Average temperature in December
Lagos, Portugal

Average temperature in December - Lagos, Portugal
  • Average high temperature in December: 16.4°C

The warmest month (with the highest average high temperature) is August (24.8°C).
The month with the lowest average high temperature is February (15.1°C).

  • Average low temperature in December: 13.4°C

The month with the highest average low temperature is August (19.9°C).
The coldest month (with the lowest average low temperature) is February (11.8°C).

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Average pressure in December
Lagos, Portugal

Average pressure in December - Lagos, Portugal
  • Average pressure in December: 1022.5mbar

The months with the highest atmospheric pressure are January and December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).

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Average wind speed in December
Lagos, Portugal

Average wind speed in December - Lagos, Portugal
  • Average wind speed in December: 18.6km/h

The windiest month (with the highest average wind speed) is February (20.3km/h).
The calmest month (with the lowest average wind speed) is September (14.6km/h).

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Average humidity in December
Lagos, Portugal

Average humidity in December - Lagos, Portugal
  • Average humidity in December: 74%

The month with the highest relative humidity is April (76%).
The month with the lowest relative humidity is August (71%).

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Average rainfall in December
Lagos, Portugal

Average rainfall in December - Lagos, Portugal
  • Average rainfall in December: 12mm

The wettest month (with the highest rainfall) is November (19mm).
The driest months (with the least rainfall) are July and August (1mm).

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Average rainfall days in December
Lagos, Portugal

Average rainfall days in December - Lagos, Portugal
  • Average rainfall days in December: 7.1 days

The month with the highest number of rainy days is November (11 days).
The month with the least rainy days is August (1.1 days).

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Average sea temperature in December
Lagos, Portugal

Average sea temperature in December - Lagos, Portugal
  • Average sea temperature in December: 17.4°C

The best month for swimming (with the highest average sea temperature) is September (21.2°C).
The coldest month (with the lowest average sea temperature) is March (16°C).

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Average daylight in December /
Average sunshine in December
Lagos, Portugal

Average daylight in December / Average sunshine in December - Lagos, Portugal
  • Average daylight in December: 9h and 40min

The month with the longest days is June (Average daylight: 14h and 40min).
The month with the shortest days is December (Average daylight: 9h and 40min).

  • Average sunshine in December: 6.4h

The month with the most sunshine is July (Average sunshine: 11.8h).
The month with the least sunshine is January (Average sunshine: 6h).

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Average sunshine days in December
Lagos, Portugal

Average sunshine days in December - Lagos, Portugal
  • Average sunshine days in December: 20.7 days

The month with the most sunshine days is July (29.6 days).
The month with the least sunshine days is November (16.4 days).

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Average UV index in December
Lagos, Portugal

Average UV index in December - Lagos, Portugal
  • Average UV index in December: 4

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in December
Lagos, Portugal

Average cloud cover in December - Lagos, Portugal
  • Average cloud cover in December: 29

The month with the most cloud cover is January (Cloud cover 33).
The months with the least cloud cover are July and August (Cloud cover 7).

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Average visibility in December
Lagos, Portugal

Average visibility in December - Lagos, Portugal
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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