September weather forecastMendoza, Uruguay
September
Weather in September
September, the first month of the spring in Mendoza, is a comfortable month, with an average temperature varying between 16.3°C (61.3°F) and 10.6°C (51.1°F).Temperature
Mendoza's weather, upon September's arrival, documents an average high-temperature of an enjoyable 16.3°C (61.3°F), nearly identical to the prior month. In the month of September, the average temperature dips to a fresh 10.6°C (51.1°F) during the night.Humidity
The months with the highest humidity are July through September, with an average relative humidity of 79%.Rainfall
In Mendoza, in September, during 9.7 rainfall days, 63mm (2.48") of precipitation is typically accumulated. Throughout the year, there are 131.6 rainfall days, and 707mm (27.83") of precipitation is accumulated.Daylight
In September, the average length of the day in Mendoza is 11h and 54min.On the first day of the month, sunrise is at 07:02 and sunset at 18:27. On the last day of September, sunrise is at 06:21 and sunset at 18:47 -03.
Sunshine
The average sunshine in September is 7.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mendoza, Uruguay
- Average high temperature in September: 16.3°C
The warmest month (with the highest average high temperature) is January (27.8°C).
The month with the lowest average high temperature is July (13.3°C).
- Average low temperature in September: 10.6°C
The month with the highest average low temperature is February (19.9°C).
The coldest month (with the lowest average low temperature) is July (8.7°C).
Average pressure in September
Mendoza, Uruguay
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is July (1018.9mbar).
The month with the lowest atmospheric pressure is December (1011.2mbar).
Average wind speed in September
Mendoza, Uruguay
- Average wind speed in September: 19.2km/h
The windiest month (with the highest average wind speed) is September (19.2km/h).
The calmest month (with the lowest average wind speed) is May (16.7km/h).
Average humidity in September
Mendoza, Uruguay
- Average humidity in September: 79%
The months with the highest relative humidity are July, August and September (79%).
The month with the lowest relative humidity is January (64%).
Average rainfall in September
Mendoza, Uruguay
- Average rainfall in September: 63mm
The wettest months (with the highest rainfall) are July and November (68mm).
The driest month (with the least rainfall) is January (46mm).
Average rainfall days in September
Mendoza, Uruguay
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is March (12.2 days).
The month with the least rainy days is January (9.4 days).
Average daylight in September /
Average sunshine in September
Mendoza, 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 30min
The months with the most sunshine are January and December (Average sunshine: 10h and 54min).
The month with the least sunshine is July (Average sunshine: 5h and 42min).
Average sunshine days in September
Mendoza, Uruguay
- Average sunshine days in September: 17.6 days
The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is October (15.2 days).
Average UV index in September
Mendoza, Uruguay
- Average UV index in September: 4
The months with the highest UV index are January, February, March and December (UV index 6).
The months with the lowest UV index are May, July and August (UV index 3).
Average cloud cover in September
Mendoza, Uruguay
- Average cloud cover in September: 36
The month with the most cloud cover is July (Cloud cover 40).
The month with the least cloud cover is January (Cloud cover 19).
Average visibility in September
Mendoza, 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).





