Port-aux-Français in Summer
In summer (December, January and February), Port-aux-Français sees average daytime highs around 9°C and overnight lows near 4°C, with 202 mm of precipitation over about 41 wet days across the season. It is the warmest season of the year and the driest season of the year.
Across summer, daytime highs hold fairly steady around 9°C. The sky is clear or mostly clear about 4% of the time across summer, and the air most often feels dry.
Summer is Port-aux-Français's best season of the year to visit on our travel score. For the whole year in context, see Port-aux-Français's year-round climate.
- Avg daytime high
- 9°C
- warmest season of the year
- Avg overnight low
- 4°C
- Precipitation
- 202 mm
- 41 wet days
- Avg wind
- 26 km/h
- Travel score
- 1.6
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Port-aux-Français in Summer
Across summer, daytime highs hold fairly steady around 9°C.
A typical summer day in Port-aux-Français reaches about 9°C and drops to 4°C overnight. The warmest of the three months is February, the coolest December.
How summer really feels in Port-aux-Français
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 90 that feel at or below 0°C.
The story in summer is cold — wind chill drags the overnight "feels like" below the raw low.
Port-aux-Français weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 9° / 4° | 68 | 13.5 | 0.6 | 15.6 | 1.8 |
| Feb | 10° / 4° | 58 | 11.6 | 0.2 | 14.2 | 1.9 |
| Mar | 9° / 4° | 71 | 13.1 | 0.5 | 12.5 | 1.6 |
| Apr | 7° / 3° | 76 | 13.3 | 1.5 | 10.6 | 1.0 |
| May | 5° / 1° | 79 | 14.6 | 3.6 | 8.9 | 0.2 |
| Jun | 4° / 0° | 77 | 14.4 | 5.5 | 8 | 0.0 |
| Jul | 4° / -1° | 88 | 15.9 | 7.5 | 8.4 | 0.0 |
| Aug | 4° / -1° | 78 | 14.1 | 6.4 | 9.8 | 0.0 |
| Sep | 4° / -1° | 78 | 14.5 | 7.2 | 11.6 | 0.0 |
| Oct | 5° / 0° | 69 | 14.3 | 4.5 | 13.5 | 0.1 |
| Nov | 7° / 2° | 72 | 15.5 | 2.8 | 15.1 | 0.6 |
| Dec | 8° / 3° | 77 | 15.6 | 0.8 | 16 | 1.2 |
Cloud cover in Summer
The sky is clear or mostly clear about 4% of the time across summer.
Chance of precipitation in Summer
Port-aux-Français gets around 202 mm of rain and snow over 41 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 26 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 15 h 42 min in early December to 13 h 24 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.3 kWh/m².
Is summer a good time to visit Port-aux-Français?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Port-aux-Français.
What to pack for Port-aux-Français in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Port-aux-Français sees daytime highs around 9°C and nights near 4°C. Pack a warm layer and rain gear. Worth having: sun protection and a windbreaker. About 41 days see rain.
Sea temperature near Port-aux-Français in Summer
The nearest coast averages about 6°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in March at about 7°C and coldest in September near 3°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 6 | 6 | 7 | 6 | 5 | 4 | 3 | 3 | 3 | 3 | 4 | 5 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 6 | Bracing |
| Feb | 6 | Bracing |
| Mar | 7 | Bracing |
| Apr | 6 | Bracing |
| May | 5 | Bracing |
| Jun | 4 | Bracing |
| Jul | 3 | Bracing |
| Aug | 3 | Bracing |
| Sep | 3 | Bracing |
| Oct | 3 | Bracing |
| Nov | 4 | Bracing |
| Dec | 5 | Bracing |
UV index in Port-aux-Français in Summer
Clear-sky midday UV across summer averages around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Port-aux-Français peaks around January 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 9 | 8 | 5 | 2 | 1 | 1 | 1 | 2 | 3 | 5 | 7 | 8 |
| Level | Very high | Very high | Moderate | Moderate | Low | Low | Low | Low | Moderate | Moderate | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 8 | Very high |
| Mar | 5 | Moderate |
| Apr | 2 | Moderate |
| May | 1 | Low |
| Jun | 1 | Low |
| Jul | 1 | Low |
| Aug | 2 | Low |
| Sep | 3 | Moderate |
| Oct | 5 | Moderate |
| Nov | 7 | Very high |
| Dec | 8 | Very high |
Where is Port-aux-Français?
Port-aux-Français sits at 49.3°S, 70.2°E, 11 m above sea level, in French Southern Territories. The nearest listed city is Saint-Joseph, 3,367 km away.
Topography around Port-aux-Français
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Port-aux-Français.
Within 3 km, the terrain around Port-aux-Français has only modest variations in elevation — a maximum elevation change of 68 m around an average of 20 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 854 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,652 m.
The land around Port-aux-Français is covered by grassland (42%), water (36%) and bare terrain (20%) within 3 km, water (41%) and grassland (37%) within 16 km, and water (69%) within 80 km.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Port-aux-Français (-49.3492°, 70.2194°, elevation 11 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.