Climate zone: Moderate zone of the southern hemisphere
It won't be really warm here and you won't need your bathing togs. Due to the warmer temperatures the best time for traveling is from January to February. Nearly unattractive for tourists are the cold months from May to October.
› Duration of daylight and sunshine in French Southern and Antarctic Lands
hours of sunshine per day rainy days per month Precipitation in mm/day Relative humidity in % Absolute humidity in g/m³ (approx.)
Temperature records of the last 66 years
The hottest temperature measured from 1954 to October 2020 was reported by the Ile Amsterdam weather station. In February 2015 the record temperature of 26.2 °C was reported here. The hottest summer from July to September was recorded in 1993 with an average temperature of 12.9 °C. This average temperature will normally be measured every 4 to 6 hours, thus also including the nights. Normally, this value is 11.4 degrees Celsius. The average maximum daily temperature at that time was 14.2 °C.
The coldest day in these 66 years was reported by the weather station Ile Amsterdam. Here the temperature dropped to 2.7 °C in August 2019. Ile Amsterdam lies at an altitude of 29 meters above sea level. The coldest winter (January to March) was in 1967 with an average temperature of 15.1 °C. In French Antarctic Lands, it is usual to have about 1.8 degrees more at 16.9 °C for this three-month period.
Long-term development of temperatures from 1991 - 2019
In contrast to single record values, a long-term development cannot simply be brought about by all weather stations in the country. Both the number and the locations are constantly changing. A simply calculated average value would give a falsified result. If several measuring stations in particularly cold mountain or coastal regions are added in one year, the average would already decrease as a result of this alone. If a station fails during the summer or winter months, it does not provide any values and falsifies the average again. The subsequent long-term development was therefore reduced to only 1 measuring points in order to have actually comparable data over as long a period as possible.
In the years 1991 to 2019 there were only these 1 weather stations in the whole country, which reported continuous temperature values (Port Aux Francais Kerguelen). From these weather reports we have created a long-term development that shows the monthly average temperatures. The hottest month in this entire period was 2002 with 9.7 °C. 2014 was the coldest month with an average temperature of -0.3 °C.
The average annual temperature was about 4.8 °C in the years after 1991 and about 5.3 °C in the last years before 2019. It has therefore increased only slightly by about 0.5 °C over the past 29 years. This trend only applies to the selected 1 weather stations in French Southern and Antarctic Lands. A considerably more comprehensive evaluation of the global warming
has been provided separately.
More detailed information on global warming with a view by continent can also be found on our topic page on climate change
. Data basis: German Weather Service, individual values averaged and supplemented by own elements.