September weather forecast
Port-aux-Français, French Southern and Antarctic Lands

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Weather in September

September nudges Port-aux-Français towards a warmer clime. The city starts witnessing increased daylight hours and sunshine, hinting at the advent of a less chilly atmosphere. Rainfall persists much in line with the trends set in August. However, snow day counts takes a dip, indicating that winter is taking its leave. Consequently, September brings respite from the bleak winters.

Temperature

The onset of September manifests an average high-temperature of a still cold 5.3°C (41.5°F), demonstrating a minor variation from the preceding month. Port-aux-Français records an average nighttime low-temperature of -0.7°C (30.7°F) throughout September.

Rainfall

In Port-aux-Français, in September, it is raining for 12 days, with typically 65mm (2.56") of accumulated precipitation. In Port-aux-Français, during the entire year, the rain falls for 169 days and collects up to 708mm (27.87") of precipitation.

Snowfall

Months with snowfall are January, March through December. In September, in Port-aux-Français, snow falls for 12 days. Throughout the year, there are 79 snowfall days.

Sea temperature

July through October, with an average sea temperature of 2°C (35.6°F), are months with the coldest seawater.
Note: In swimming situations, the extreme cold and danger can lead to fatality. Without the protection of insulated waterproof gear, hypothermia takes effect quickly.

Daylight

In September, the average length of the day is 11h and 44min.
On the first day of September, sunrise is at 06:51 and sunset at 17:46. On the last day of the month, sunrise is at 05:49 and sunset at 18:28 +05.

Sunshine

In September, the average sunshine is 4.2h.

UV index

The average daily maximum UV index in September is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 2 during September leads to these instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.

Frequently asked questions

How cold does it get in Port-aux-Français in September?

September temperatures vary between a high-temperature of 5.3°C (41.5°F) and a low-temperature of -0.7°C (30.7°F).

How many days does it rain in September?

In Port-aux-Français, during September, the rain falls for 12 days and regularly aggregates up to 65mm (2.56") of precipitation.

How many days does it snow in September?

In Port-aux-Français, during September, snow falls for 12 days.

What are the months with the coldest sea water in Port-aux-Français?

July through October, with an average sea temperature of 2°C (35.6°F), are months with the coldest seawater.

What is the sea temperature in September?

In September, the average sea temperature is 2°C (35.6°F). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

How many hours of daylight does Port-aux-Français have in September?

In Port-aux-Français, the average day length in September is 11h and 44min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 06:51 and sunset at 17:46. On the last day of the month, sunrise is at 05:49 and sunset at 18:28 +05.

How long on average sun shines in September?

In September, the average sunshine duration is 4.2h.

What is the UV index reading in September?

In September, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to Sun's UV rays.
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Port-aux-Français, French Southern and Antarctic Lands

Average temperature in September - Port-aux-Français, French Southern and Antarctic Lands
  • Average high temperature in September: 5.3°C

The warmest month (with the highest average high temperature) is February (11.5°C).
The month with the lowest average high temperature is July (4.8°C).

  • Average low temperature in September: -0.7°C

The month with the highest average low temperature is February (4.3°C).
The coldest months (with the lowest average low temperature) are July and August (-0.8°C).

Average rainfall in September
Port-aux-Français, French Southern and Antarctic Lands

Average rainfall in September - Port-aux-Français, French Southern and Antarctic Lands
  • Average rainfall in September: 65.3mm

The wettest month (with the highest rainfall) is May (69mm).
The driest month (with the least rainfall) is February (45.5mm).

Average rainfall days in September
Port-aux-Français, French Southern and Antarctic Lands

Average rainfall days in September - Port-aux-Français, French Southern and Antarctic Lands
  • Average rainfall days in September: 12 days

The months with the highest number of rainy days are January, March, April and December (16 days).
The month with the least rainy days is September (12 days).

Average snowfall days in September
Port-aux-Français, French Southern and Antarctic Lands

Average snowfall days in September - Port-aux-Français, French Southern and Antarctic Lands
  • Average snowfall days in September: 12 days

The month with the highest number of snowfall days is August (13 days).
The month with the least snowfall days is February (0 days).

Average sea temperature in September
Port-aux-Français, French Southern and Antarctic Lands

Average sea temperature in September - Port-aux-Français, French Southern and Antarctic Lands
  • Average sea temperature in September: 2°C

The best months for swimming (with the highest average sea temperature) are February and March (5°C).
The coldest months (with the lowest average sea temperature) are July, August, September and October (2°C).

Average daylight in September /
Average sunshine in September
Port-aux-Français, French Southern and Antarctic Lands

Average daylight in September / Average sunshine in September - Port-aux-Français, French Southern and Antarctic Lands
  • Average daylight in September: 11h and 4min

The month with the longest days is December (Average daylight: 16h and 12min).
The month with the shortest days is June (Average daylight: 8h and 12min).

  • Average sunshine in September: 4h and 1min

The month with the most sunshine is January (Average sunshine: 6h and 6min).
The month with the least sunshine is June (Average sunshine: 2h and 24min).

Average UV index in September
Port-aux-Français, French Southern and Antarctic Lands

Average UV index in September - Port-aux-Français, French Southern and Antarctic Lands
  • Average UV index in September: 2

The months with the highest UV index are January and December (UV index 8).
The months with the lowest UV index are May, June, July and August (UV index 1).

Port-aux-Français, French Southern and Antarctic Lands

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