December weather forecastBucelas, Portugal

December

Weather in December

December, the first month of the winter in Bucelas, is also a moderate month, with an average temperature varying between 8.5°C (47.3°F) and 15.3°C (59.5°F).

Temperature

Bucelas's entry into December measures an average high-temperature of a moderate 15.3°C (59.5°F), closely parallel to the preceding month. Bucelas witnesses a consistent average low-temperature of 8.5°C (47.3°F) throughout December.

Humidity

The average relative humidity in December is 78%.

Rainfall

In December, in Bucelas, the rain falls for 9.5 days. Throughout December, 39mm (1.54") of precipitation is accumulated. Throughout the year, in Bucelas, there are 97 rainfall days, and 309mm (12.17") of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 07:36 and sunset at 17:14. On the last day of December, in Bucelas, sunrise is at 07:54 and sunset at 17:24 WET.

Sunshine

The average sunshine in December is 5.6h.

UV index

January, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: A daily high UV index of 3 in December leads to these guidelines:
Guard yourself - Precautionary measures against sun damage are advocated. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.

Frequently asked questions

During December, Bucelas experiences an average high-temperature of 15.3°C (59.5°F) and a low-temperature of 8.5°C (47.3°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in September is evaluated at 30°C (86°F).

The average relative humidity in December is 78%.

In Bucelas, in December, during 9.5 rainfall days, 39mm (1.54") of precipitation is typically accumulated.

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

The average day length in December is 9h and 29min.

In December, on the first day of the month, sunrise is at 07:36 and sunset at 17:14. On the last day of the month, sunrise is at 07:54 and sunset at 17:24 WET.

In Bucelas, Portugal, the average sunshine duration in December is 5.6h.

January, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Bucelas, Portugal.

In Bucelas, Portugal, the average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
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
Bucelas, Portugal

  • Average high temperature in December: 15.3°C

The warmest month (with the highest average high temperature) is August (30.1°C).
The month with the lowest average high temperature is January (14.6°C).

  • Average low temperature in December: 8.5°C

The month with the highest average low temperature is July (16.5°C).
The coldest month (with the lowest average low temperature) is February (7.7°C).

Average pressure in December
Bucelas, 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
Bucelas, Portugal

  • Average wind speed in December: 11.7km/h

The windiest month (with the highest average wind speed) is July (14.2km/h).
The calmest month (with the lowest average wind speed) is October (11km/h).

Average humidity in December
Bucelas, Portugal

  • Average humidity in December: 78%

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (64%).

Average rainfall in December
Bucelas, Portugal

  • Average rainfall in December: 39mm

The wettest month (with the highest rainfall) is November (56mm).
The driest month (with the least rainfall) is July (2mm).

Average rainfall days in December
Bucelas, Portugal

  • Average rainfall days in December: 9.5 days

The month with the highest number of rainy days is April (12.8 days).
The month with the least rainy days is July (2.2 days).

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

  • Average daylight in December: 9h and 30min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 36min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).

Average sunshine days in December
Bucelas, Portugal

  • Average sunshine days in December: 20.2 days

The month with the most sunshine days is July (28.4 days).
The month with the least sunshine days is April (15.8 days).

Average UV index in December
Bucelas, Portugal

  • Average UV index in December: 3

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, November and December (UV index 3).

Average cloud cover in December
Bucelas, Portugal

  • Average cloud cover in December: 39

The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 18).

Average visibility in December
Bucelas, Portugal

  • Average visibility in December: 9km

The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).