Temperatures in December
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.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Heard Island and McDonald Islands in December. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of December
The month of December starts in Heard Island and McDonald Islands with very cold temperatures, averaging around 3°C during the day and nights close to 2°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry. Wear a thick winter coat, jumper, long trousers, hat, and gloves.
Mid-December
By mid-December, the average daytime temperature rises to around 4°C, with nights close to 2°C. There might be a few showers during this period, but plenty of dry days with sunshine too. Wear a thick winter coat, jumper, long trousers, hat, and gloves.
End of December
By the end of December, the average daytime temperature in Heard Island and McDonald Islands will be around 4°C, with nights close to 3°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days. Wear a thick winter coat, jumper, long trousers, hat, and gloves.
Precipitation in December
In December, there is an average of 99 mm of precipitation, spread over 21 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.
The average precipitation chance this month is 69% per day. Though that seems frequent, there are also a few days with lower precipitation chances.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in December for Heard Island and McDonald Islands. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Heard Island and McDonald Islands in December |
UK | ||
|---|---|---|---|
 Average Temperature |
3°C | 9°C | |
 High Temp |
4°C | 11°C | |
| Low Temp |
2°C | 8°C | |
 Total Precipitation |
99 mm | 67 mm | |
| Rainy Days |
21 days | 10 days | |
 Total Snowfall |
8,7 cm | 1,2 cm | |
| Snowy Days |
4 days | 1 day | |
November
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 records for Heard Island and McDonald Islands in December
With 7°C, Heard Island and McDonald Islands hit the highest temperature in the last 10 years in December 2020. The lowest daytime temperature in this month was -1°C in 2022. The extreme night temperatures ranged from a low of -2°C to a high of 4°C.
Daily Temperature in December in Heard Island and McDonald Islands
This chart shows the average daily temperatures, both day and night, for each day in December in Heard Island and McDonald Islands, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in December in Heard Island and McDonald Islands
The chart below shows the average daily precipitation in December for Heard Island and McDonald Islands, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for December, you can expect around 21 days of rain in Heard Island and McDonald Islands.
Daily Snowfall in December in Heard Island and McDonald Islands
This chart shows the average daily snowfall in December in Heard Island and McDonald Islands, measured in centimetres. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in December.
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.
Temperature in December in Heard Island and McDonald Islands Over the Years
This chart shows the average temperature in December in Heard Island and McDonald Islands, measured in degrees Celsius, over the past years.
Total Precipitation in December in Heard Island and McDonald Islands Over the Years
This chart shows the average precipitation in December in Heard Island and McDonald Islands, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Snowfall in December in Heard Island and McDonald Islands per year
This chart shows the average snowfall in December in Heard Island and McDonald Islands, measured in centimetres, over the past years.
Daily climate in December for Heard Island and McDonald Islands
Click on a specific day in December for detailed info on the typical 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.
Weather experiences in December in Heard Island and McDonald Islands
The weather in December in Heard Island and McDonald Islands is rated 1 out of 5 stars by 1 visitor. Have you been to Heard Island and McDonald Islands? Share your weather experience to help other visitors.
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December is probably not the best time to visit the Heard and McDonald Islands. Severe frosts of minus 20 degrees and persistent snowstorms made outdoor recreation almost impossible. Next time, I will go to a warmer place.— This text is automatically translated to English
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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.
Or check out the climate of Heard Island and McDonald Islands for all months at once
