December weather forecast
Corroios, Portugal

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Weather in December

And finally, the year ends on a noticeable drop to average temperatures between 10.9°C (51.6°F) to 15.7°C (60.3°F). The onset of Winter reflects visible changes in Corroios, Portugal with reduced daylight hours of 9.5 hours and increased cloud coverage to 34%. Winter takes precedent over other seasons, promoting cooler temperatures and higher humidity levels. However, compared to November, rainfall sees a marginal reduction to 8mm (0.31"). December forms the narrative of an idyllic Portuguese winter, concluding the year on a comfortably cool note.

Temperature

Corroios experiences an average high-temperature of a mild 15.7°C (60.3°F) in December, subtly different from November's 17.8°C (64°F). Corroios's nighttime temperature in December consistently rests at a fresh 10.9°C (51.6°F).

Humidity

In Corroios, the average relative humidity in December is 75%.

Rainfall

In December, in Corroios, the rain falls for 5.1 days. Throughout December, 8mm (0.31") of precipitation is accumulated. Throughout the year, there are 54.4 rainfall days, and 62mm (2.44") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature in Corroios is 16.6°C (61.9°F).
Note: For the majority, swimming in 16.6°C (61.9°F) does not offer a pleasant experience. Below 21°C (69.8°F), the difficulty in controlling breathing escalates.

Daylight

The month with the shortest days in Corroios is December, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 07:35 and sunset at 17:15. On the last day of December, in Corroios, sunrise is at 07:54 and sunset at 17:25 WET.

Sunshine

In December, the average sunshine is 5.9h.

UV index

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index, 4 during December, leads to the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Avoiding the Sun during its peak radiation time around midday is a healthy practice. During bright days, sunglasses that offer UVA and UVB defense are recommended.

Frequently asked questions

What is the usual temperature for Corroios in December?

In Corroios, in December, the average high-temperature is 15.7°C (60.3°F), and the average low-temperature is 10.9°C (51.6°F). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, is computed to be 29°C (84.2°F).

What is the average humidity in December in Corroios?

In December, the average relative humidity is 75%.

How much does it rain in Corroios in December?

In Corroios, in December, it is raining for 5.1 days, with typically 8mm (0.31") of accumulated precipitation.

What is the sea water temperature in December in Corroios?

In Corroios, in December, the average water temperature is 16.6°C (61.9°F). For most, swimming in 16.6°C (61.9°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

What is the month with the shortest days in Corroios?

The month with the shortest days in Corroios is December, with an average of 9h and 30min of daylight.

How many hours of daylight does Corroios have in December?

In Corroios, the average day length in December is 9h and 31min.

When are sunrise and sunset in December in Corroios?

In December, on the first day of the month, sunrise is at 07:35 and sunset at 17:15. On the last day of the month, in Corroios, sunrise is at 07:54 and sunset at 17:25 WET.

How many hours of sunshine does Corroios have in December?

The average sunshine duration in December in Corroios is 5.9h.

When is the lowest UV index in Corroios?

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

What is the UV index intensity in December in Corroios?

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
Corroios, Portugal

Average temperature in December - Corroios, Portugal
  • Average high temperature in December: 15.7°C

The warmest month (with the highest average high temperature) is August (27.1°C).
The month with the lowest average high temperature is January (14.9°C).

  • Average low temperature in December: 10.9°C

The month with the highest average low temperature is July (17.9°C).
The coldest month (with the lowest average low temperature) is February (9.8°C).

Average pressure in December
Corroios, Portugal

Average pressure in December - Corroios, Portugal
  • Average pressure in December: 1022.6mbar

The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).

Average wind speed in December
Corroios, Portugal

Average wind speed in December - Corroios, Portugal
  • Average wind speed in December: 15km/h

The windiest month (with the highest average wind speed) is February (16.5km/h).
The calmest month (with the lowest average wind speed) is September (13km/h).

Average humidity in December
Corroios, Portugal

Average humidity in December - Corroios, Portugal
  • Average humidity in December: 75%

The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (68%).

Average rainfall in December
Corroios, Portugal

Average rainfall in December - Corroios, Portugal
  • Average rainfall in December: 8mm

The wettest month (with the highest rainfall) is November (15mm).
The driest months (with the least rainfall) are June, July and August (1mm).

Average rainfall days in December
Corroios, Portugal

Average rainfall days in December - Corroios, Portugal
  • Average rainfall days in December: 5.1 days

The month with the highest number of rainy days is November (9.3 days).
The month with the least rainy days is August (0.8 days).

Average sea temperature in December
Corroios, Portugal

Average sea temperature in December - Corroios, Portugal
  • Average sea temperature in December: 16.6°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).

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

Average daylight in December / Average sunshine in December - Corroios, Portugal
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

Average sunshine days in December
Corroios, Portugal

Average sunshine days in December - Corroios, Portugal
  • Average sunshine days in December: 23.5 days

The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is November (17.7 days).

Average UV index in December
Corroios, Portugal

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

The months with the highest UV index are May, 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).

Average cloud cover in December
Corroios, Portugal

Average cloud cover in December - Corroios, Portugal
  • Average cloud cover in December: 34

The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in December
Corroios, Portugal

Average visibility in December - Corroios, 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).

Corroios, Portugal

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