September weather forecast and climate
Rosario de la Frontera, Argentina

• Average high temperature in September: 23.2°C

The warmest month (with the highest average high temperature) is December (28.3°C).
The month with the lowest average high temperature is July (17.5°C).

• Average low temperature in September: 11.5°C

The month with the highest average low temperature is January (17.5°C).
The coldest month (with the lowest average low temperature) is July (7°C).

• Average humidity in September: 56%

The month with the highest relative humidity is April (83%).
The month with the lowest relative humidity is August (54%).

• Average rainfall in September: 15mm

The wettest month (with the highest rainfall) is January (199mm).
The driest month (with the lowest rainfall) is August (4mm).

• Average rainfall days in September: 8 days

The month with the highest number of rainy days is January (23.6 days).
The month with the lowest number of rainy days is August (3.3 days).

• Average snowfall in September: 0mm

The month with the highest snowfall is July (8mm).
Months with the lowest snowfall are January, February, March, April, May, June, August, September, October, November and December (0mm).

• Average snowfall days in September: 0.2 days

The month with the highest number of snowfall days is July (0.5 days).
Months with the lowest number of snowfall days are January, February, March, April, May, June, October, November and December (0 days).

• Average daylight in September: 12h

The month with the longest days is December (Average daylight: 13.7h).
The month with shortest days is June (Average daylight: 10.5h).

• Average sunshine in September: 9h

The month with most sunshine is August (Average sunshine: 9.6h).
The month with least sunshine is April (Average sunshine: 6.9h).

• Average UV index in September: 5

Months with the highest UV index are January, October and December (UV index 6).
Months with the lowest UV index are April, May, June and July (UV index 4).