Temperatures in September
It's cold in September in Heard Island and McDonald Islands with an average temperature of 1°C. Temperatures this month range from a low of 1°C to a high of 2°C. At night, you can expect temperatures between -2°C and 0°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 September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Heard Island and McDonald Islands with very cold temperatures, averaging around 2°C during the day and nights close to 0°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month. Wear a thick winter coat, jumper, long trousers, hat, and gloves.
Mid-September
By mid-September, the average daytime temperature stays the same at 2°C, with nights close to 0°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 September
By the end of September, the average daytime temperature in Heard Island and McDonald Islands will be around 2°C, with nights close to 0°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 September
In September, there is an average of 114 mm of precipitation, spread over 25 days. Of the total precipitation, about 37 cm falls as snow in September. The wind speed is around 7 Bft, mostly coming from the West.
With an average precipitation chance of 83% this month, rainy days are almost inevitable.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September 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 September |
UK | ||
|---|---|---|---|
 Average Temperature |
1°C | 20°C | |
 High Temp |
2°C | 22°C | |
| Low Temp |
1°C | 17°C | |
 Total Precipitation |
114 mm | 44 mm | |
| Rainy Days |
25 days | 8 days | |
 Total Snowfall |
37 cm | 0 cm | |
| Snowy Days |
17 days | 0 days | |
August
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Heard Island and McDonald Islands?
After some sun? Then September isn’t the best time to be in Heard Island and McDonald Islands. There’s too much chance of rain this month.
Temperature records for Heard Island and McDonald Islands in September
With 6°C, Heard Island and McDonald Islands hit the highest temperature in the last 10 years in September 2017. The lowest daytime temperature in this month was -4°C in 2023. The extreme night temperatures ranged from a low of -6°C to a high of 3°C.
Daily Temperature in September in Heard Island and McDonald Islands
This chart shows the average daily temperatures, both day and night, for each day in September 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 September in Heard Island and McDonald Islands
The chart below shows the average daily precipitation in September 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 September, you can expect around 25 days of rain in Heard Island and McDonald Islands.
Daily Snowfall in September in Heard Island and McDonald Islands
This chart shows the average daily snowfall in September 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 September.
Daily UV Index in September in Heard Island and McDonald Islands
This chart shows the average daily UV index in September 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 September in Heard Island and McDonald Islands Over the Years
This chart shows the average temperature in September in Heard Island and McDonald Islands, measured in degrees Celsius, over the past years.
Total Precipitation in September in Heard Island and McDonald Islands Over the Years
This chart shows the average precipitation in September 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 September in Heard Island and McDonald Islands per year
This chart shows the average snowfall in September in Heard Island and McDonald Islands, measured in centimetres, over the past years.
Daily climate in September for Heard Island and McDonald Islands
Click on a specific day in September 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 September in Heard Island and McDonald Islands
The weather in September 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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Temperatures will drop significantly and you may have to move your leisure activities indoors. Too rough for my taste.— This text is automatically translated to English
Have you been to Heard Island and McDonald Islands in September?
Share your weather experience in September 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.
Or check out the climate of Heard Island and McDonald Islands for all months at once
