Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The start of December marks an average high-temperature of an enjoyable 18.7°C (65.7°F), hardly distinguishable from the conditions in November. Recording a slight drop from the daily maximum, Ribeira Brava notes an average low temperature of 17.5°C (63.5°F) in the month of December.Humidity
In Ribeira Brava, the average relative humidity in December is 74%.Rainfall
In Ribeira Brava, in December, it is raining for 13.4 days, with typically 27mm (1.06") of accumulated precipitation. In Ribeira Brava, during the entire year, the rain falls for 116.4 days and collects up to 232mm (9.13") of precipitation.Sea temperature
In Ribeira Brava, in December, the average water temperature is 20°C (68°F).Note: Most people do not find pleasure in swimming when the water temperature is 20°C (68°F). Breathing becomes increasingly difficult to manage as the water temperature drops from 21°C (69.8°F) to 15°C (59°F).
Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 07:52 and sunset at 18:02. On the last day of the month, sunrise is at 08:10 and sunset at 18:12 WET.
Sunshine
January and December, with an average of 7.6h of sunshine, are months with the least sunshine in Ribeira Brava.UV index
The months with the lowest UV index in Ribeira Brava are January through June, November and December, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index, 5 during December, leads to the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What is the average December temperature in Ribeira Brava?
What is the average humidity in December in Ribeira Brava?
How many days does it rain in December in Ribeira Brava?
What is the sea temperature in December in Ribeira Brava?
What is the month with the shortest days in Ribeira Brava?
How many hours of daylight does Ribeira Brava have in December?
When are sunrise and sunset in December in Ribeira Brava?
What is the month with the least sunshine in Ribeira Brava?
How long on average sun shines in December in Ribeira Brava?
What are the months with the lowest UV index in Ribeira Brava?
What is the UV index intensity in December in Ribeira Brava?
Average temperature in December
Ribeira Brava, Portugal
- Average high temperature in December: 18.7°C
The warmest month (with the highest average high temperature) is August (23°C).
The months with the lowest average high temperature are February and March (16.9°C).
- Average low temperature in December: 17.5°C
The month with the highest average low temperature is September (21.7°C).
The coldest month (with the lowest average low temperature) is March (15.1°C).
Average pressure in December
Ribeira Brava, Portugal
- Average pressure in December: 1022.4mbar
The month with the highest atmospheric pressure is January (1024.1mbar).
The month with the lowest atmospheric pressure is October (1017mbar).
Average wind speed in December
Ribeira Brava, Portugal
- Average wind speed in December: 22.3km/h
The windiest month (with the highest average wind speed) is February (23km/h).
The calmest month (with the lowest average wind speed) is September (17.7km/h).
Average humidity in December
Ribeira Brava, Portugal
- Average humidity in December: 74%
The months with the highest relative humidity are June and August (80%).
The month with the lowest relative humidity is February (73%).
Average rainfall in December
Ribeira Brava, Portugal
- Average rainfall in December: 27mm
The wettest month (with the highest rainfall) is October (44mm).
The driest month (with the least rainfall) is August (3mm).
Average rainfall days in December
Ribeira Brava, Portugal
- Average rainfall days in December: 13.4 days
The month with the highest number of rainy days is November (16 days).
The month with the least rainy days is August (3.9 days).
Average sea temperature in December
Ribeira Brava, Portugal
- Average sea temperature in December: 20°C
The best months for swimming (with the highest average sea temperature) are August, September and October (23°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (18°C).
Average daylight in December /
Average sunshine in December
Ribeira Brava, Portugal
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 7h and 4min
The month with the most sunshine is June (Average sunshine: 9h and 12min).
The months with the least sunshine are January and December (Average sunshine: 7h and 36min).
Average sunshine days in December
Ribeira Brava, Portugal
- Average sunshine days in December: 12 days
The month with the most sunshine days is August (20.9 days).
The month with the least sunshine days is November (8.4 days).
Average UV index in December
Ribeira Brava, Portugal
- Average UV index in December: 5
The months with the highest UV index are July, August, September and October (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 5).
Average cloud cover in December
Ribeira Brava, Portugal
- Average cloud cover in December: 39
The month with the most cloud cover is November (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in December
Ribeira Brava, 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).
Ribeira Brava, Portugal
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