The climate of Heard Island and McDonald Islands
The current climate in Heard Island and McDonald Islands features temperatures ranging from a high of 5°C to a low of 1°C throughout the year. The average yearly temperature is around 3°C. At night, temperatures in the colder months average around -1°C and in the warmer months around 3°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Heard Island and McDonald Islands.
Temperature records
The highest temperature recorded in Heard Island and McDonald Islands in recent years was 8°C in February 2021. The lowest daytime temperature recorded was -6°C in August 2014.
Precipitation and snowfall
On average, Heard Island and McDonald Islands gets 1380 mm of precipitation each year. Of this, about 251 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Best time to visit Heard Island and McDonald Islands?
If you're after warm and sunny weather, there aren’t really any specific months that are best to visit Heard Island and McDonald Islands. The temperatures are too low throughout the year, or there’s just too much precipitation.
Climate Table of Heard Island and McDonald Islands
The climate table of Heard Island and McDonald Islands shows the average temperatures, rainfall, snow, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 4 | 5 | 5 | 4 | 3 | 3 | 2 | 2 | 1 | 2 | 2 | 3 |
| Temp. min (°C) | 3 | 3 | 3 | 2 | 1 | 1 | 0 | -1 | -1 | 0 | 1 | 2 |
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| Precipitation (mm) | 93 | 124 | 99 | 127 | 126 | 126 | 124 | 131 | 114 | 112 | 104 | 100 |
| Snow (cm) | 6,8 | 3,7 | 3,4 | 7,6 | 24 | 29 | 40 | 40 | 36 | 32 | 18 | 8,8 |
| UV Index | 6 | 5 | 4 | 3 | 2 | 1 | 1 | 2 | 4 | 6 | 6 | 7 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Heard Island and McDonald Islands. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Heard Island and McDonald Islands
Yearly Temperature in Heard Island and McDonald Islands
Precipitation charts
These charts show the average amount of precipitation 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.
Average Precipitation per Month in Heard Island and McDonald Islands
Total Yearly Precipitation in Heard Island and McDonald Islands
Average Snowfall per Month in Heard Island and McDonald Islands
Total Yearly Snowfall in Heard Island and McDonald Islands
UV index chart
This chart shows the average UV index per month in Heard Island and McDonald Islands. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Heard Island and McDonald Islands
Weather experiences in Heard Island and McDonald Islands
The weather in Heard Island and McDonald Islands is rated an average of 0 out of 5 stars by 11 visitors. Have you been to Heard Island and McDonald Islands? Share your weather experience to help other visitors.
Have you been to Heard Island and McDonald Islands?
Share your weather experiences in Heard Island and McDonald Islands.
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.