Ushuaia
Argentina
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Ushuaia, Argentina

The first month of the spring, September, is a chilly month in Ushuaia, Argentina, with average temperature fluctuating between 0.5°C (32.9°F) and 8.2°C (46.8°F).

Temperature

In September, the average high-temperature is practically the same as in August - a chilly 8.2°C (46.8°F). In Ushuaia, in September, the average low-temperature is 0.5°C (32.9°F).

Humidity

The average relative humidity in Ushuaia is 76%.

Rainfall

In Ushuaia, in September, it is raining for 12 days, with typically 41.7mm (1.6") of accumulated precipitation. In Ushuaia, during the entire year, the rain falls for 151 days and collects up to 529.7mm (20.9") of precipitation.

Snowfall

January through December are months with snowfall in Ushuaia.

Sea temperature

July through October, with an average sea temperature of 6°C (42.8°F), are months with the coldest seawater in Ushuaia. At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

The average length of the day is 11.7h.

Sunshine

In Ushuaia, the average sunshine is 4.1h.

UV index

In Ushuaia, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to the UV radiation for the average person.
In September, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in September in Ushuaia?

The average high-temperature, in September, in Ushuaia, is 8.2°C (46.8°F), while the average low-temperature is 0.5°C (32.9°F).

What is the average humidity in September in Ushuaia?

In September, the average relative humidity is 76%.

How much does it rain in Ushuaia in September?

In Ushuaia, Argentina, in September, it is raining for 12 days, with typically 41.7mm (1.6") of accumulated precipitation.

How many days does it snow in September in Ushuaia?

In September, in Ushuaia, Argentina, snow falls for 7 days.

What are the months with the coldest sea water in Ushuaia?

July through October, with an average sea temperature of 6°C (42.8°F), are months with the coldest seawater in Ushuaia. At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

What is the sea water temperature in September in Ushuaia?

In September, the average sea temperature in Ushuaia is 6°C (42.8°F). Swimming in 6°C (42.8°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in September in Ushuaia?

The average length of the day in September in Ushuaia, Argentina, is 11.7h.

How many hours of sunshine does Ushuaia have in September?

In Ushuaia, the average sunshine in September is 4.1h.

How high is the UV index in September in Ushuaia?

In September, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation.
Average temperature in September - Ushuaia, Argentina
  • Average high temperature in September: 8.2°C

The warmest month (with the highest average high temperature) is January (13.9°C).
The month with the lowest average high temperature is July (4.2°C).

  • Average low temperature in September: 0.5°C

The month with the highest average low temperature is January (5.4°C).
The coldest month (with the lowest average low temperature) is July (-1.7°C).

Average humidity in September - Ushuaia, Argentina
  • Average humidity in September: 76%

Months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (72%).

Average rainfall in September - Ushuaia, Argentina
  • Average rainfall in September: 41.7mm

The wettest month (with the highest rainfall) is April (56.1mm).
The driest month (with the lowest rainfall) is November (34.6mm).

Average rainfall days in September - Ushuaia, Argentina
  • Average rainfall days in September: 12 days

Months with the highest number of rainy days are January, March and December (14 days).
The month with the lowest number of rainy days is July (11 days).

Average snowfall days in September - Ushuaia, Argentina
  • Average snowfall days in September: 7 days

The month with the highest number of snowfall days is August (9 days).
The month with the lowest number of snowfall days is February (0.1 days).

Average sea temperature in September - Ushuaia, Argentina
  • Average sea temperature in September: 6°C

Best months for swimming (with the highest average sea temperature) are January, February, March and April (8°C).
Coldest months (with the lowest average sea temperature) are July, August, September and October (6°C).

Average daylight in September / Average sunshine in September - Ushuaia, Argentina
  • Average daylight in September: 11.7h

The month with the longest days is December (Average daylight: 17.2h).
The month with shortest days is June (Average daylight: 7.3h).

  • Average sunshine in September: 4.1h

The month with most sunshine is November (Average sunshine: 6h).
The month with least sunshine is June (Average sunshine: 1.4h).

Average UV index in September - Ushuaia, Argentina
  • Average UV index in September: 2

Months with the highest UV index are January and December (UV index 7).
Months with the lowest UV index are June and July (UV index 0).