December weather forecastComporta, Portugal

December

Weather in December

December, the first month of the winter in Comporta, is also a moderate month, with temperature in the range of an average high of 15.6°C (60.1°F) and an average low of 10.3°C (50.5°F).

Temperature

The average high-temperature is a moderate 15.6°C (60.1°F) in December, hardly different from the 17.9°C (64.2°F) recorded in November. Comporta observes an average low-temperature of 10.3°C (50.5°F) during December.

Humidity

In December, the average relative humidity in Comporta is 76%.

Rainfall

In Comporta, during December, the rain falls for 9.7 days and regularly aggregates up to 47mm (1.85") of precipitation. In Comporta, during the entire year, the rain falls for 101 days and collects up to 340mm (13.39") of precipitation.

Daylight

The month with the shortest days is December, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 07:33 and sunset at 17:14. On the last day of December, in Comporta, sunrise is at 07:52 and sunset at 17:24 WET.

Sunshine

In December, the average sunshine is 5.9h.

UV index

January through April, 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 medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In December, the maximum UV index of 4 suggests this advice:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.

Frequently asked questions

The high-temperature, in December, in Comporta, is 15.6°C (60.1°F), while the low-temperature averages to 10.3°C (50.5°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 31°C (87.8°F).

In December, the average relative humidity in Comporta is 76%.

In December, the rain falls for 9.7 days. Throughout December, 47mm (1.85") of precipitation is accumulated.

With an average of 9h and 30min of daylight, December has the shortest days of the year.

In Comporta, Portugal, the average day length in December is 9h and 33min.

In December, on the first day of the month, sunrise is at 07:33 and sunset at 17:14. On the last day of the month, sunrise is at 07:52 and sunset at 17:24 WET.

In Comporta, the average sunshine duration in December is 5.9h.

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

In December, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Comporta, Portugal

  • Average high temperature in December: 15.6°C

The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (14.8°C).

  • Average low temperature in December: 10.3°C

The month with the highest average low temperature is July (17.3°C).
The coldest month (with the lowest average low temperature) is February (9.1°C).

Average pressure in December
Comporta, 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 (1015.6mbar).

Average wind speed in December
Comporta, Portugal

  • Average wind speed in December: 13.6km/h

The windiest month (with the highest average wind speed) is February (14.8km/h).
The calmest month (with the lowest average wind speed) is September (11.7km/h).

Average humidity in December
Comporta, Portugal

  • Average humidity in December: 76%

The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (64%).

Average rainfall in December
Comporta, Portugal

  • Average rainfall in December: 47mm

The wettest month (with the highest rainfall) is November (55mm).
The driest months (with the least rainfall) are July and August (2mm).

Average rainfall days in December
Comporta, Portugal

  • Average rainfall days in December: 9.7 days

The month with the highest number of rainy days is November (13.3 days).
The month with the least rainy days is August (1.7 days).

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

  • Average daylight in December: 9h and 30min

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 54min

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
Comporta, Portugal

  • Average sunshine days in December: 19.5 days

The month with the most sunshine days is August (28 days).
The month with the least sunshine days is November (14.9 days).

Average UV index in December
Comporta, 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, April, November and December (UV index 4).

Average cloud cover in December
Comporta, Portugal

  • Average cloud cover in December: 35

The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 12).

Average visibility in December
Comporta, 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).