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
December's onset brings an average high-temperature of a still mild 13.6°C (56.5°F), showing a minute difference from November's 15.3°C (59.5°F). Massarelos nights in December witness a mild cool down to an average temperature of 8.8°C (47.8°F).Humidity
In December, the average relative humidity is 79%.Rainfall
In Massarelos, in December, during 13.8 rainfall days, 113mm (4.45") of precipitation is typically accumulated. In Massarelos, during the entire year, the rain falls for 136.5 days and collects up to 810mm (31.89") of precipitation.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 07:40 and sunset at 17:06. On the last day of December, sunrise is at 07:59 and sunset at 17:15 WET.
Sunshine
In Massarelos, Portugal, the average sunshine in December is 5.5h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 3 during December translates into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Massarelos?
What is the average humidity in December in Massarelos?
How many days does it rain in December in Massarelos?
What is the month with the shortest days in Massarelos?
How many hours of daylight does Massarelos have in December?
When are sunrise and sunset in December in Massarelos?
How long on average sun shines in December in Massarelos?
What are the months with the lowest UV index in Massarelos?
How high is the UV index in December in Massarelos?
Average temperature in December
Massarelos, Portugal
- Average high temperature in December: 13.6°C
The warmest month (with the highest average high temperature) is August (25.1°C).
The month with the lowest average high temperature is January (12.8°C).
- Average low temperature in December: 8.8°C
The months with the highest average low temperature are July and August (15.8°C).
The coldest month (with the lowest average low temperature) is February (7.6°C).
Average pressure in December
Massarelos, 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 (1015.3mbar).
Average wind speed in December
Massarelos, Portugal
- Average wind speed in December: 11.9km/h
The windiest month (with the highest average wind speed) is February (12.8km/h).
The calmest month (with the lowest average wind speed) is September (9.5km/h).
Average humidity in December
Massarelos, Portugal
- Average humidity in December: 79%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are August and September (69%).
Average rainfall in December
Massarelos, Portugal
- Average rainfall in December: 113mm
The wettest month (with the highest rainfall) is November (126mm).
The driest month (with the least rainfall) is July (9mm).
Average rainfall days in December
Massarelos, Portugal
- Average rainfall days in December: 13.8 days
The month with the highest number of rainy days is November (16.1 days).
The month with the least rainy days is August (4.7 days).
Average daylight in December /
Average sunshine in December
Massarelos, Portugal
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in December
Massarelos, Portugal
- Average sunshine days in December: 16.4 days
The month with the most sunshine days is August (24.8 days).
The month with the least sunshine days is November (11.9 days).
Average UV index in December
Massarelos, Portugal
- Average UV index in December: 3
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Massarelos, Portugal
- Average cloud cover in December: 41
The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 18).
Average visibility in December
Massarelos, 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).
