UV Index
UV Index
Today's UV index in Port-aux-Français, French Southern and Antarctic Lands 
will be up to 5.3, indicating a moderate level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-05-09
With a UV index reaching up to 5.3 in Port-aux-Français, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
Port-aux-Français typically has a low UV index, usually ranging between 0 and 3, due to its high southern latitude and frequent cloud cover that limits strong sunlight exposure. The UV levels are often at their lowest during the winter months from June to August.
The weather in Port-aux-Français is cold and windy year-round, with temperatures rarely rising above 5°C (41°F). Summers from December to February are cool and slightly more stable, while winters bring harsher winds and more precipitation in the form of rain or snow.
Compared to other places in the Southern Ocean and Antarctica, Port-aux-Français is milder but still colder and windier than most mainland areas. Its climate is less extreme than Antarctica’s interior but colder and more humid than nearby islands like Madagascar or South Africa's southern coast.
See the UV index hour by hour for Port-aux-Français, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.