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
Ilhavo's shift into December sets the average high-temperature at a still moderate 14.3°C (57.7°F), a figure that deviates only slightly from November's 15.8°C (60.4°F). Throughout the month of December, Ilhavo expects an average low of 8.6°C (47.5°F).Humidity
In Ilhavo, Portugal, the average relative humidity in December is 79%.Rainfall
In Ilhavo, Portugal, during December, the rain falls for 12.1 days and regularly aggregates up to 84mm (3.31") of precipitation. Throughout the year, in Ilhavo, there are 125.4 rainfall days, and 619mm (24.37") of precipitation is accumulated.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 07:39 and sunset at 17:08. On the last day of December, in Ilhavo, sunrise is at 07:58 and sunset at 17:17 WET.
Sunshine
In Ilhavo, the average sunshine in December is 5.7h.UV index
The months with the lowest UV index in Ilhavo are January, February, November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: During December, 3 as the daily maximum UV index converts into the following advice:
Be vigilant - Preventing sunburn is recommended. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Ilhavo in December?
What is the average humidity in December in Ilhavo?
How much does it rain in Ilhavo in December?
What is the month with the shortest days in Ilhavo?
What is the average length of the day in December in Ilhavo?
When are sunrise and sunset in December in Ilhavo?
How long on average sun shines in December in Ilhavo?
What are the months with the lowest UV index in Ilhavo?
How high is the UV index in December in Ilhavo?
Average temperature in December
Ilhavo, Portugal
- Average high temperature in December: 14.3°C
The warmest month (with the highest average high temperature) is August (25.4°C).
The month with the lowest average high temperature is January (13.3°C).
- Average low temperature in December: 8.6°C
The month with the highest average low temperature is August (15.9°C).
The coldest month (with the lowest average low temperature) is February (7.6°C).
Average pressure in December
Ilhavo, Portugal
- Average pressure in December: 1022.6mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in December
Ilhavo, Portugal
- Average wind speed in December: 12km/h
The windiest month (with the highest average wind speed) is February (12.9km/h).
The calmest month (with the lowest average wind speed) is September (9.8km/h).
Average humidity in December
Ilhavo, Portugal
- Average humidity in December: 79%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is September (70%).
Average rainfall in December
Ilhavo, Portugal
- Average rainfall in December: 84mm
The wettest month (with the highest rainfall) is November (94mm).
The driest month (with the least rainfall) is July (6mm).
Average rainfall days in December
Ilhavo, Portugal
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is November (14.9 days).
The month with the least rainy days is August (3.3 days).
Average daylight in December /
Average sunshine in December
Ilhavo, Portugal
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 5h and 4min
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 12min).
Average sunshine days in December
Ilhavo, Portugal
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is November (12.9 days).
Average UV index in December
Ilhavo, Portugal
- Average UV index in December: 3
The months with the highest UV index are May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Ilhavo, Portugal
- Average cloud cover in December: 39
The month with the most cloud cover is January (Cloud cover 43).
The months with the least cloud cover are July, August and September (Cloud cover 19).
Average visibility in December
Ilhavo, Portugal
- Average visibility in December: 10km
The months with the highest visibility are February, June and December (10km).
The months with the lowest visibility are January, March, April, May, July, August, September, October and November (9km).
