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
Weather in December
Temperature
December notes an average high-temperature of a still enjoyable 19°C (66.2°F), subtly differing from November's 17.6°C (63.7°F). In December, the average low-temperature in Portland records at a mild 13.7°C (56.7°F) during the nights.Humidity
The average relative humidity in December is 74%.Rainfall
In Portland, during December, the rain falls for 12.5 days and regularly aggregates up to 34mm (1.34") of precipitation. In Portland, Australia, during the entire year, the rain falls for 182 days and collects up to 532mm (20.94") of precipitation.Sea temperature
In Portland, in December, the average water temperature is 16.3°C (61.3°F).Note: Swimming is not a pleasant activity for most individuals in 16.3°C (61.3°F). Breathing becomes increasingly challenging to control as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
With an average of 14h and 48min of daylight, December has the longest days of the year in Portland, Australia.On the first day of December in Portland, Australia, sunrise is at 6:03 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 9:00 pm AEDT.
Sunshine
In December, the average sunshine is 7.9h.UV index
The months with the highest UV index are January through March and December, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The average daily UV index of 5 in December transforms into the following instructions:
Be vigilant - Suggestions to stave off sun damage are provided. When the Sun is at its strongest around midday, find shade and limit exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Frequently asked questions
What is the temperature in December in Portland?
What is the average humidity in December in Portland?
How many days does it rain in December in Portland?
What is the sea water temperature in December in Portland?
When are the longest days in Portland?
How many hours of daylight does Portland have in December?
When are sunrise and sunset in December in Portland?
How long on average sun shines in December in Portland?
When is the highest UV index in Portland?
What is the UV index reading in December in Portland?
Average temperature in December
Portland, Australia
- Average high temperature in December: 19°C
The warmest month (with the highest average high temperature) is February (20.8°C).
The month with the lowest average high temperature is July (13.1°C).
- Average low temperature in December: 13.7°C
The month with the highest average low temperature is February (15.8°C).
The coldest month (with the lowest average low temperature) is August (9.6°C).
Average pressure in December
Portland, Australia
- Average pressure in December: 1013.2mbar
The month with the highest atmospheric pressure is June (1020.7mbar).
The month with the lowest atmospheric pressure is January (1013.1mbar).
Average wind speed in December
Portland, Australia
- Average wind speed in December: 18.3km/h
The windiest month (with the highest average wind speed) is August (23.6km/h).
The calmest month (with the lowest average wind speed) is April (17.6km/h).
Average humidity in December
Portland, Australia
- Average humidity in December: 74%
The months with the highest relative humidity are June and July (77%).
The month with the lowest relative humidity is January (72%).
Average rainfall in December
Portland, Australia
- Average rainfall in December: 34mm
The wettest month (with the highest rainfall) is August (74mm).
The driest month (with the least rainfall) is February (22mm).
Average rainfall days in December
Portland, Australia
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is August (21.2 days).
The month with the least rainy days is February (8.8 days).
Average sea temperature in December
Portland, Australia
- Average sea temperature in December: 16.3°C
The best months for swimming (with the highest average sea temperature) are January and February (17.3°C).
The coldest month (with the lowest average sea temperature) is September (14.2°C).
Average daylight in December /
Average sunshine in December
Portland, Australia
- Average daylight in December: 14h and 5min
The month with the longest days is December (Average daylight: 14h and 48min).
The month with the shortest days is June (Average daylight: 9h and 30min).
- Average sunshine in December: 7h and 5min
The month with the most sunshine is January (Average sunshine: 8h and 48min).
The month with the least sunshine is May (Average sunshine: 5h and 54min).
Average sunshine days in December
Portland, Australia
- Average sunshine days in December: 16.2 days
The month with the most sunshine days is January (18.1 days).
The month with the least sunshine days is August (6.9 days).
Average UV index in December
Portland, Australia
- Average UV index in December: 5
The months with the highest UV index are January, February, March and December (UV index 5).
The months with the lowest UV index are June, July and August (UV index 3).
Average cloud cover in December
Portland, Australia
- Average cloud cover in December: 38
The months with the most cloud cover are May and August (Cloud cover 54).
The month with the least cloud cover is January (Cloud cover 34).
Average visibility in December
Portland, Australia
- 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).
Portland, Australia
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