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 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
December
Weather in December
Temperature
The arrival of December sees a recorded average high-temperature of a still refreshing 14.9°C (58.8°F), showing little divergence from the previous month's conditions. In December, the average low-temperature is a frosty 9.8°C (49.6°F).Humidity
In Roliça, the average relative humidity in December is 77%.Rainfall
In Roliça, in December, during 9.2 rainfall days, 19mm (0.75") of precipitation is typically accumulated. Throughout the year, there are 101.9 rainfall days, and 170mm (6.69") of precipitation is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 07:37 and sunset at 17:14. On the last day of December, in Roliça, sunrise is at 07:56 and sunset at 17:23 WET.
Sunshine
In December, the average sunshine is 5.7h.UV index
In December, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the maximum UV index of 4 suggests these recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Roliça in December?
What is the average humidity in December?
How much does it rain in Roliça in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
How high is the UV index in December?
Average temperature in December
Roliça, Portugal
- Average high temperature in December: 14.9°C
The warmest month (with the highest average high temperature) is August (25.6°C).
The month with the lowest average high temperature is January (14°C).
- Average low temperature in December: 9.8°C
The month with the highest average low temperature is August (17°C).
The coldest month (with the lowest average low temperature) is February (8.8°C).
Average pressure in December
Roliça, Portugal
- Average pressure in December: 1022.5mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in December
Roliça, Portugal
- Average wind speed in December: 15.9km/h
The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest month (with the lowest average wind speed) is September (13.6km/h).
Average humidity in December
Roliça, Portugal
- Average humidity in December: 77%
The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are September and October (72%).
Average rainfall in December
Roliça, Portugal
- Average rainfall in December: 19mm
The wettest month (with the highest rainfall) is November (34mm).
The driest months (with the least rainfall) are July and August (3mm).
Average rainfall days in December
Roliça, Portugal
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is November (13.7 days).
The month with the least rainy days is August (3 days).
Average daylight in December /
Average sunshine in December
Roliça, Portugal
- Average daylight in December: 9h and 3min
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 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in December
Roliça, Portugal
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is August (25 days).
The month with the least sunshine days is November (13.3 days).
Average UV index in December
Roliça, Portugal
- Average UV index in December: 4
The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in December
Roliça, Portugal
- Average cloud cover in December: 38
The month with the most cloud cover is January (Cloud cover 44).
The months with the least cloud cover are August and September (Cloud cover 21).
Average visibility in December
Roliça, Portugal
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (10km).
The months with the lowest visibility are July and August (9km).
