Rosario
Argentina
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Rosario, Argentina

The first month of the spring, September, is a pleasant month in Rosario, Argentina, with temperature in the range of an average low of 9.7°C (49.5°F) and an average high of 20.6°C (69.1°F).

Temperature

In Rosario, Argentina, the average high-temperature in September is essentially the same as in August - a pleasant 20.6°C (69.1°F). In Rosario, the average low-temperature is 9.7°C (49.5°F).

Humidity

In Rosario, the average relative humidity is 71%.

Rainfall

In Rosario, it is raining for 7.5 days, with typically 34mm (1.34") of accumulated precipitation. In Rosario, during the entire year, the rain falls for 89.9 days and collects up to 475mm (18.7") of precipitation.

Daylight

The average length of the day in September is 11.9h.

Sunshine

In Rosario, the average sunshine is 8h.

UV index

Months with the lowest UV index in Rosario are April through September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Rosario?

In Rosario, in September, the average high-temperature is 20.6°C (69.1°F), and the average low-temperature is 9.7°C (49.5°F).

What is the average humidity in September in Rosario?

In September, the average relative humidity in Rosario is 71%.

How many days does it rain in September in Rosario?

In Rosario, Argentina, in September, during 7.5 rainfall days, 34mm (1.34") of precipitation is typically accumulated.

How many hours of daylight does Rosario have in September?

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

How many hours of sunshine does Rosario have in September?

In September, the average sunshine is 8h.

What are the months with the lowest UV index in Rosario?

Months with the lowest UV index are April through September, with an average maximum UV index of 4.

What is the UV index intensity in September in Rosario?

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.
Average temperature in September - Rosario, Argentina
  • Average high temperature in September: 20.6°C

The warmest month (with the highest average high temperature) is January (33.4°C).
The month with the lowest average high temperature is July (15.7°C).

  • Average low temperature in September: 9.7°C

The month with the highest average low temperature is January (18.8°C).
The coldest month (with the lowest average low temperature) is July (7.5°C).

Average humidity in September - Rosario, Argentina
  • Average humidity in September: 71%

The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is January (52%).

Average rainfall in September - Rosario, Argentina
  • Average rainfall in September: 34mm

The wettest month (with the highest rainfall) is December (72mm).
The driest month (with the least rainfall) is June (16mm).

Average rainfall days in September - Rosario, Argentina
  • Average rainfall days in September: 7.5 days

The month with the highest number of rainy days is October (10 days).
The month with the least rainy days is June (4.8 days).

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

The month with the longest days is December (Average daylight: 14.3h).
The month with the shortest days is June (Average daylight: 10h).

  • Average sunshine in September: 8h

The month with the most sunshine is December (Average sunshine: 11.1h).
The month with the least sunshine is May (Average sunshine: 7.4h).

Average UV index in September - Rosario, Argentina
  • Average UV index in September: 4

The month with the highest UV index is January (UV index 7).
Months with the lowest UV index are April, May, June, July, August and September (UV index 4).