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Monthly climate in Port-aux-Francais, French Southern Territories

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Port-aux-Francais features a ice cap climate ET). Temperatures typically range between 2 °C (35 °F) and 8 °C (46 °F) through the year, but rarely can drop to -6 °C (21 °F) or can rise to as high as 16 °C (60 °F). The average annual precipitation amounts to about 1001 mm (39.4 inches) and receives 179 rainy days on the 1 mm (0.04 inches) threshold annually. Port-aux-Francais enjoys an average of 3116 hours of sunshine throughout the year, and daylight varies from 8 hours 13 minutes to 16 hours 9 minutes per day.

Monthly average temperatures in Port-aux-Francais, French Southern Territories

The warmest months in Port-aux-Francais are January, February and March, with daily mean temperatures ranging from 7 to 8 °C (45 - 46 °F) throughout the day. The coldest temperatures usually occur in July, August and September, when daily mean temperatures range from 2 to 2 °C (35 - 36 °F) throughout the day. On average each year, Port-aux-Francais experiences 0 days above 25 °C (77.0 °F) and 70 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Port-aux-Francais. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum16°C
(60°F)		15°C
(58°F)		15°C
(60°F)		13°C
(55°F)		11°C
(52°F)		10°C
(50°F)		8°C
(47°F)		9°C
(48°F)		10°C
(50°F)		11°C
(53°F)		12°C
(55°F)		14°C
(58°F)
Mean maximum14°C
(58°F)		14°C
(57°F)		14°C
(58°F)		12°C
(53°F)		10°C
(50°F)		9°C
(49°F)		8°C
(47°F)		8°C
(47°F)		8°C
(47°F)		10°C
(51°F)		11°C
(53°F)		13°C
(56°F)
Average high10°C
(49°F)		10°C
(51°F)		9°C
(49°F)		8°C
(46°F)		6°C
(42°F)		5°C
(41°F)		4°C
(40°F)		4°C
(40°F)		4°C
(39°F)		5°C
(42°F)		7°C
(45°F)		9°C
(48°F)
Daily mean7°C
(45°F)		8°C
(46°F)		7°C
(45°F)		5°C
(42°F)		3°C
(39°F)		3°C
(37°F)		2°C
(36°F)		2°C
(36°F)		2°C
(35°F)		3°C
(38°F)		5°C
(41°F)		6°C
(43°F)
Average low4°C
(40°F)		5°C
(41°F)		4°C
(40°F)		3°C
(38°F)		1°C
(35°F)		1°C
(33°F)		-0°C
(32°F)		-0°C
(32°F)		-0°C
(31°F)		1°C
(33°F)		2°C
(36°F)		3°C
(38°F)
Mean minimum1°C
(35°F)		3°C
(37°F)		1°C
(34°F)		0°C
(32°F)		-3°C
(28°F)		-2°C
(29°F)		-4°C
(26°F)		-4°C
(25°F)		-4°C
(25°F)		-2°C
(28°F)		-1°C
(31°F)		1°C
(34°F)
Minimum1°C
(34°F)		2°C
(36°F)		1°C
(33°F)		-1°C
(30°F)		-5°C
(22°F)		-4°C
(26°F)		-5°C
(23°F)		-6°C
(21°F)		-6°C
(21°F)		-3°C
(27°F)		-3°C
(28°F)		1°C
(34°F)

Compare climate in Port-aux-Francais with other places

Compare temperature, precipitation, sunshine, UV index in Port-aux-Francais, French Southern Territories with other places around the world.

Monthly average precipitation in Port-aux-Francais, French Southern Territories

Port-aux-Francais usually has the most precipitation in April, July and August, with an average of 17 rainy days and 102 mm (4.0 inches) of precipitation per month. The driest months in Port-aux-Francais are January, February and June. On average, 66 mm (2.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Port-aux-Francais. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)60 (2.4)63 (2.5)75 (3.0)106 (4.2)95 (3.7)74 (2.9)98 (3.8)102 (4.0)84 (3.3)81 (3.2)81 (3.2)82 (3.2)
Average precipitation days (≥ 1 mm)121014161515191615171515

Monthly sunshine hours in Port-aux-Francais, French Southern Territories

The sunniest months in Port-aux-Francais are October, November and December, when the sun shines an average of 11 hours 4 minutes a day. Least sunny months in Port-aux-Francais: May, June and July receive an average of 5 hours 39 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Port-aux-Francais. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours287298280219186164170230258306333378
Mean daily daylight hours15h 41m14h 12m12h 23m10h 33m9h 0m8h 13m8h 38m10h 0m11h 44m13h 34m15h 15m16h 9m

Solar UV radiation in Port-aux-Francais, French Southern Territories

Port-aux-Francais experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 9 - 12, which corresponds to the Very High / Extreme category of sun exposure. May, June and July are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Port-aux-Francais UV Index data.

Average daily maximum UV levels by month for Port-aux-Francais. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)11974211357912