Port-aux-Français climate
Port-aux-Français (French Southern Territories) has a tundra climate (Köppen ET). The average temperature over the year is 4 °C39 °F, and about 698 mm27 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Port-aux-Français climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 948 | 440 | 644 | 542.1 | 0 |
| Feb | 948 | 540 | 744 | 461.8 | 0 |
| Mar | 847 | 440 | 643 | 562.2 | 0 |
| Apr | 744 | 338 | 541 | 682.7 | 0 |
| May | 440 | 134 | 337 | 682.7 | 9 |
| Jun | 338 | 033 | 235 | 632.5 | 17 |
| Jul | 337 | 031 | 134 | 652.6 | 24 |
| Aug | 337 | 031 | 134 | 622.4 | 22 |
| Sep | 338 | 032 | 235 | 532.1 | 21 |
| Oct | 440 | 133 | 337 | 481.9 | 15 |
| Nov | 642 | 236 | 439 | 572.2 | 5 |
| Dec | 846 | 338 | 542 | 582.3 | 0 |
| Year | 948 | 031 | 439 | 69827 | 113 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 81% | 83% | 5.4 | 15:48 |
| Feb | 83% | 81% | 4.5 | 14:19 |
| Mar | 84% | 80% | 3.2 | 12:37 |
| Apr | 86% | 81% | 1.9 | 10:42 |
| May | 87% | 80% | 1.1 | 9:05 |
| Jun | 88% | 81% | 0.7 | 8:12 |
| Jul | 87% | 83% | 0.9 | 8:34 |
| Aug | 86% | 82% | 1.5 | 9:58 |
| Sep | 83% | 82% | 2.7 | 11:50 |
| Oct | 82% | 84% | 4.0 | 13:41 |
| Nov | 82% | 84% | 5.1 | 15:23 |
| Dec | 81% | 83% | 5.8 | 16:14 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Port-aux-Français is like
The warmest month is February, with an average high of 9 °C48 °F and a low of 5 °C40 °F. The coldest is July, when highs average 3 °C37 °F and lows 0 °C31 °F. Seasonal differences are small — just 5.7 °C10.3 °F between the warmest and the coolest month.
Annual precipitation is moderate at about 698 mm27 in. Rain is spread fairly evenly through the year. The wettest month is May (68 mm2.7 in), the driest is February (46 mm1.8 in).
Relative humidity ranges from 81% in December to 88% in June. The clearest skies (lowest average cloud amount, 80%) are typical of March. Average wind speed near the ground ranges from 30 km/h (19 mph) in June to 35 km/h (22 mph) in October. Daylight lasts from about 8.2 hours in June to 16.2 hours in December.
A lasting snow cover is typical in May–October, when the average snow depth in the reanalysis exceeds 10 cm (deepest in July, about 17 cm).
Best time to visit Port-aux-Français
No month comes close to our comfort ideal here. The least demanding months are January, February and March (average highs 9 °C48 °F, 9 °C48 °F and 8 °C47 °F).
The most challenging month is July, which is cold, with average highs of 3 °C37 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Port-aux-Français
- Summer (December–February) — highs 846 to 9 °C48 °F, lows 338 to 5 °C40 °F, about 53 mm2.1 in of precipitation a month. Pack a warm coat, layers and closed shoes.
- Autumn (March–May) — highs 440 to 8 °C47 °F, lows 134 to 4 °C40 °F, about 64 mm2.5 in of precipitation a month. Pack a warm coat, layers and closed shoes.
- Winter (June–August) — highs around 3 °C37 °F, lows around 0 °C31 °F, about 64 mm2.5 in of precipitation a month. Pack a winter coat, hat, gloves and warm, non-slip boots and shoes with good grip, as frost is common.
- Spring (September–November) — highs 338 to 6 °C42 °F, lows 032 to 2 °C36 °F, about 52 mm2.1 in of precipitation a month. Pack a warm coat, layers and closed shoes.
How Port-aux-Français compares
Places in other countries with the most similar temperature and rainfall pattern: Punta Arenas (Chile, ET), Stanley (Falkland Islands, Cfc) and Grytviken (South Georgia and the South Sandwich Islands, ET).
Nearby places
Frequently asked questions
What is the warmest month in Port-aux-Français?
February is the warmest month in Port-aux-Français, with an average high of 9 °C (48 °F) and an average low of 5 °C (40 °F).
What is the coldest month in Port-aux-Français?
July is the coldest month, with an average high of 3 °C (37 °F) and an average low of 0 °C (31 °F).
When does it rain the most in Port-aux-Français?
May is the wettest month with about 68 mm (2.7 in) of precipitation; February is the driest with about 46 mm (1.8 in).
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 119 m, while Port-aux-Français lies at about 11 m. Temperatures on this page were therefore adjusted by +0.7 °C1.3 °F using the standard lapse rate of 6.5 °C per 1,000 m.