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 onset of December manifests an average high-temperature of a still refreshing 14.9°C (58.8°F), demonstrating a minor variation from the preceding month. Throughout the month of December, the average temperature dips to a chilly 9.8°C (49.6°F) at night.Humidity
The average relative humidity in December is 77%.Rainfall
In Olho Marinho, in December, it is raining for 9.2 days, with typically 19mm (0.75") of accumulated precipitation. In Olho Marinho, during the entire year, the rain falls for 101.9 days and collects up to 170mm (6.69") of precipitation.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 07:38 and sunset at 17:14. On the last day of December, 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 medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 4 during December translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the average humidity in December?
How much does it rain in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December in Olho Marinho?
How many hours of sunshine does Olho Marinho have in December?
What is the UV index intensity in December?
Average temperature in December
Olho Marinho, 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
Olho Marinho, 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
Olho Marinho, 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
Olho Marinho, 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
Olho Marinho, 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
Olho Marinho, 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
Olho Marinho, 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
Olho Marinho, 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
Olho Marinho, 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
Olho Marinho, 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
Olho Marinho, 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).
