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
December
Weather in December
Temperature
The arrival of December denotes a barely perceptible change in the average high-temperatures to a still comfortable 16.4°C (61.5°F) from November's 18.4°C (65.1°F). In December, Manta Rota temperatures settle at a low of 11.7°C (53.1°F) during the nights, reflecting a minor change from daytime highs.Humidity
In Manta Rota, the average relative humidity in December is 73%.Rainfall
In Manta Rota, Portugal, during December, the rain falls for 5.1 days and regularly aggregates up to 10mm (0.39") of precipitation. In Manta Rota, Portugal, during the entire year, the rain falls for 51.6 days and collects up to 90mm (3.54") of precipitation.Sea temperature
In Manta Rota, in December, the average water temperature is 17°C (62.6°F).Note: For most, swimming in 17°C (62.6°F) is not a pleasant experience. As the temperature falls from 21°C (69.8°F) to 15°C (59°F), controlling one's breathing becomes more difficult.
Daylight
December has the shortest days of the year, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 07:25 and sunset at 17:13. On the last day of December, sunrise is at 07:43 and sunset at 17:22 WET.
Sunshine
In Manta Rota, the average sunshine in December is 6.5h.UV index
January through March, November and December, with an average maximum UV index of 4, 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 rays for ordinary individuals.Note: In December, the average maximum UV index of 4 translates into the following recommendations:
Act with care - The need to guard against sun damage is communicated. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the average humidity in December?
How much does it rain in December?
What is the sea water temperature in December?
What is the month with the shortest days?
What is the average length of the day in December in Manta Rota?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Manta Rota, Portugal
- Average high temperature in December: 16.4°C
The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (14.9°C).
- Average low temperature in December: 11.7°C
The month with the highest average low temperature is August (20.4°C).
The coldest month (with the lowest average low temperature) is February (10.3°C).
Average pressure in December
Manta Rota, Portugal
- Average pressure in December: 1022.5mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The months with the lowest atmospheric pressure are April and August (1015.3mbar).
Average wind speed in December
Manta Rota, Portugal
- Average wind speed in December: 16.9km/h
The windiest month (with the highest average wind speed) is February (18km/h).
The calmest month (with the lowest average wind speed) is September (12.3km/h).
Average humidity in December
Manta Rota, Portugal
- Average humidity in December: 73%
The month with the highest relative humidity is January (74%).
The months with the lowest relative humidity are July and August (60%).
Average rainfall in December
Manta Rota, Portugal
- Average rainfall in December: 10mm
The wettest months (with the highest rainfall) are April and November (15mm).
The driest months (with the least rainfall) are July and August (1mm).
Average rainfall days in December
Manta Rota, Portugal
- Average rainfall days in December: 5.1 days
The month with the highest number of rainy days is April (8.4 days).
The month with the least rainy days is August (0.8 days).
Average sea temperature in December
Manta Rota, Portugal
- Average sea temperature in December: 17°C
The best month for swimming (with the highest average sea temperature) is August (22°C).
The coldest months (with the lowest average sea temperature) are January, February and March (16°C).
Average daylight in December /
Average sunshine in December
Manta Rota, Portugal
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 6h and 3min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).
Average sunshine days in December
Manta Rota, Portugal
- Average sunshine days in December: 24.8 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is April (20 days).
Average UV index in December
Manta Rota, Portugal
- Average UV index in December: 4
The months with the highest UV index are May, June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in December
Manta Rota, Portugal
- Average cloud cover in December: 26
The months with the most cloud cover are January and April (Cloud cover 29).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Manta Rota, 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).
