The weather in December in Heard Island and McDonald Islands
It's cold in December in Heard Island and McDonald Islands with an average temperature of 3°C. Temperatures this month range from a low of 2°C to a high of 4°C. At night, you can expect temperatures between 1°C and 3°C.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in December for Heard Island and McDonald Islands. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 7°C in 2020, Heard Island and McDonald Islands reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was -1°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of -2°C to a highest value of 4°C.
Precipitation and snowfall
In December, there is an average of 99 mm of precipitation, spread over 12 days. Of the total precipitation, about 8,7 cm falls as snow in December. The wind speed is around 7 Bft, mostly coming from the West.
Daily weather in December for Heard Island and McDonald Islands
Click on any day in December to get detailed info about the usual weather on that day in Heard Island and McDonald Islands. Check out the historical temperatures and precipitation over the past 10 years on this day.
December weather comparison
| Heard Island and McDonald Islands | New York | |
|---|---|---|
| Average temperature | 3°C | 9°C |
| Max. temperature | 4°C | 12°C |
| Min. temperature | 1°C | -5°C |
| Total precipitation | 99 mm | 133 mm |
| Rainy days | 12 days | 17 days |
| Total snowfall | 8,7 cm | 9,7 cm |
| Snowy days | 4 days | 3 days |
Start of December
The month of December starts in Heard Island and McDonald Islands with really cold temps, averaging around 3°C during the day and nights dipping to about 2°C.
Mid December
By mid-December, daytime temps rise to around 4°C, with nights around 2°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of December
By the end of December, the average daytime temperature in Heard Island and McDonald Islands is around 4°C, while nighttime temps are about 3°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Temperature charts
These charts show the average temperatures in December in Heard Island and McDonald Islands. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in December in Heard Island and McDonald Islands
Temperature in December in Heard Island and McDonald Islands over the years
Precipitation charts
These charts show the average amount of precipitation in December in Heard Island and McDonald Islands. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in December in Heard Island and McDonald Islands
Total precipitation in December in Heard Island and McDonald Islands over the years
Daily Snowfall in December in Heard Island and McDonald Islands
Snowfall in December in Heard Island and McDonald Islands per year
Daily UV index in December in Heard Island and McDonald Islands
This chart shows the average daily UV index in December in Heard Island and McDonald Islands, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in December in Heard Island and McDonald Islands
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Average weather in Heard Island and McDonald Islands by month
Click on a month below to see detailed weather info for Heard Island and McDonald Islands. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.