September weather forecastRosario, Uruguay

September

Weather in September

The first month of the spring, September, is still a refreshing month in Rosario, Uruguay, with an average temperature varying between 11.5°C (52.7°F) and 15.9°C (60.6°F).

Temperature

The shift into September records an average high-temperature of a still moderate 15.9°C (60.6°F), subtly varied from August's 14.4°C (57.9°F). In Rosario, the month of September records an average minimum temperature of 11.5°C (52.7°F), a slight dip from the daily highs.

Humidity

September is the most humid month, with an average relative humidity of 78%.

Rainfall

In Rosario, in September, during 9 rainfall days, 51mm (2.01") of precipitation is typically accumulated. In Rosario, during the entire year, the rain falls for 114.7 days and collects up to 678mm (26.69") of precipitation.

Daylight

In September, the average length of the day in Rosario is 11h and 54min.
On the first day of September, sunrise is at 07:06 and sunset at 18:31. On the last day of the month, sunrise is at 06:26 and sunset at 18:51 -03.

Sunshine

In September, the average sunshine is 7.6h.

UV index

The average daily maximum UV index in September in Rosario is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 4 during September translates into these guidelines:
Undertake precautions - It is suggested to shield oneself from sunburn. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.

Frequently asked questions

The high-temperature, in September, in Rosario, records 15.9°C (60.6°F), while the low-temperature is 11.5°C (52.7°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in January is evaluated at 29°C (84.2°F).

With an average relative humidity of 78%, September is the most humid month.

In Rosario, the average relative humidity in September is 78%.

In Rosario, in September, it is raining for 9 days, with typically 51mm (2.01") of accumulated precipitation.

The average day length in September is 11h and 54min.

In September, on the first day of the month, sunrise is at 07:06 and sunset at 18:31. On the last day of the month, sunrise is at 06:26 and sunset at 18:51 -03.

In September, the average sunshine duration is 7.6h.

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Rosario, Uruguay

  • Average high temperature in September: 15.9°C

The warmest month (with the highest average high temperature) is January (27.2°C).
The month with the lowest average high temperature is July (13.1°C).

  • Average low temperature in September: 11.5°C

The month with the highest average low temperature is January (21.3°C).
The coldest month (with the lowest average low temperature) is July (9.6°C).

Average pressure in September
Rosario, Uruguay

  • Average pressure in September: 1017.9mbar

The month with the highest atmospheric pressure is July (1019.1mbar).
The month with the lowest atmospheric pressure is December (1011.1mbar).

Average wind speed in September
Rosario, Uruguay

  • Average wind speed in September: 21.1km/h

The windiest month (with the highest average wind speed) is September (21.1km/h).
The calmest month (with the lowest average wind speed) is December (18.1km/h).

Average humidity in September
Rosario, Uruguay

  • Average humidity in September: 78%

The month with the highest relative humidity is September (78%).
The month with the lowest relative humidity is January (66%).

Average rainfall in September
Rosario, Uruguay

  • Average rainfall in September: 51mm

The wettest month (with the highest rainfall) is November (69mm).
The driest month (with the least rainfall) is May (43mm).

Average rainfall days in September
Rosario, Uruguay

  • Average rainfall days in September: 9 days

The month with the highest number of rainy days is March (11 days).
The month with the least rainy days is June (8.2 days).

Average daylight in September /
Average sunshine in September
Rosario, Uruguay

  • Average daylight in September: 11h and 54min

The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).

  • Average sunshine in September: 7h and 36min

The month with the most sunshine is December (Average sunshine: 11h and 6min).
The month with the least sunshine is June (Average sunshine: 6h and 0min).

Average sunshine days in September
Rosario, Uruguay

  • Average sunshine days in September: 19.4 days

The month with the most sunshine days is August (21.3 days).
The month with the least sunshine days is February (16.6 days).

Average UV index in September
Rosario, Uruguay

  • Average UV index in September: 4

The months with the highest UV index are January, February, March, November and December (UV index 6).
The month with the lowest UV index is July (UV index 3).

Average cloud cover in September
Rosario, Uruguay

  • Average cloud cover in September: 34

The month with the most cloud cover is July (Cloud cover 38).
The month with the least cloud cover is January (Cloud cover 17).

Average visibility in September
Rosario, Uruguay

  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).