Bahía Blanca
Argentina
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Bahía Blanca, Argentina

September, the first month of the spring, in Bahía Blanca, is a comfortable month, with average temperature varying between 18.4°C (65.1°F) and 5.3°C (41.5°F).

Temperature

In Bahía Blanca, the average high-temperature in September is almost the same as in August - an enjoyable 18.4°C (65.1°F). In September, in Bahía Blanca, the average low-temperature is 5.3°C (41.5°F).

Humidity

In Bahía Blanca, the average relative humidity in September is 64%.

Rainfall

In Bahía Blanca, in September, it is raining for 6 days, with typically 45.3mm (1.8") of accumulated precipitation. Throughout the year, there are 79 rainfall days, and 645.4mm (25.4") of precipitation is accumulated.

Sea temperature

August and September, with an average sea temperature of 12°C (53.6°F), are months with the coldest seawater in Bahía Blanca. Swimming in 12°C (53.6°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In September, the average length of the day is 11.9h.

Sunshine

In Bahía Blanca, the average sunshine is 5.2h.

UV index

In September, the average daily maximum UV index in Bahía Blanca is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to the UV radiation for ordinary individuals.
In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Bahía Blanca?

In Bahía Blanca, Argentina, in September, the average high-temperature is 18.4°C (65.1°F), and the average low-temperature is 5.3°C (41.5°F).

What is the average humidity in September in Bahía Blanca?

In September, the average relative humidity in Bahía Blanca, Argentina, is 64%.

How many days does it rain in September in Bahía Blanca?

In Bahía Blanca, Argentina, in September, it is raining for 6 days, with typically 45.3mm (1.8") of accumulated precipitation.

When is the sea coldest in Bahía Blanca?

August and September, with an average sea temperature of 12°C (53.6°F), are months with the coldest seawater. 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 water temperature in September in Bahía Blanca?

In Bahía Blanca, the average seawater temperature in September is 12°C (53.6°F). 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.

How many hours of daylight does Bahía Blanca have in September?

In September, the average length of the day in Bahía Blanca, Argentina, is 11.9h.

How long on average sun shines in September in Bahía Blanca?

In September, the average sunshine in Bahía Blanca is 5.2h.

What is the UV index reading in September in Bahía Blanca?

In September, the average daily maximum UV index in Bahía Blanca, Argentina, is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.
Average temperature in September - Bahía Blanca, Argentina
  • Average high temperature in September: 18.4°C

The warmest month (with the highest average high temperature) is January (30.6°C).
The month with the lowest average high temperature is July (13.7°C).

  • Average low temperature in September: 5.3°C

The month with the highest average low temperature is January (15.7°C).
The coldest month (with the lowest average low temperature) is July (3°C).

Average humidity in September - Bahía Blanca, Argentina
  • Average humidity in September: 64%

Months with the highest relative humidity are June and July (74%).
The month with the lowest relative humidity is January (52%).

Average rainfall in September - Bahía Blanca, Argentina
  • Average rainfall in September: 45.3mm

The wettest month (with the highest rainfall) is March (89.6mm).
The driest month (with the lowest rainfall) is June (25.5mm).

Average rainfall days in September - Bahía Blanca, Argentina
  • Average rainfall days in September: 6 days

The month with the highest number of rainy days is October (9 days).
Months with the lowest number of rainy days are June and August (5 days).

Average sea temperature in September - Bahía Blanca, Argentina
  • Average sea temperature in September: 12°C

Best months for swimming (with the highest average sea temperature) are February and March (21°C).
Coldest months (with the lowest average sea temperature) are August and September (12°C).

Average daylight in September / Average sunshine in September - Bahía Blanca, Argentina
  • Average daylight in September: 11.9h

The month with the longest days is December (Average daylight: 14.8h).
The month with shortest days is June (Average daylight: 9.5h).

  • Average sunshine in September: 5.2h

The month with most sunshine is January (Average sunshine: 9.7h).
The month with least sunshine is July (Average sunshine: 3.6h).

Average UV index in September - Bahía Blanca, Argentina
  • Average UV index in September: 5

The month with the highest UV index is January (UV index 12).
Months with the lowest UV index are June and July (UV index 2).