The climate in Montevideo during September can be summarized as mild and reasonably dry.
September is in the spring in Montevideo and is typically the 4th coldest month of the year. Daytime maximum temperatures average around 18°C (64°F), whilst at night 9°C (48°F) is normal.
|Daytime temperature||17.8°C 64°F|
|Nightly temperature||8.9°C 47.9°F|
|Average temperature||13.3°C 55.9°F|
|Daily sunshine||6.7 hrs|
|Avg rainfall||75 mm 2.9 ins|
|Rainy days||9 days|
|Sea temperature||12.3°C 54.1°F|
|Windspeed||17.3kph 11 mph|
On average September is the 6th driest month of the year in Montevideo with around 75mm 2.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.7 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in September 2020.
|Hottest month:||January||27.9°C 82.2°F|
|Driest month:||December||62mm 2.4ins|
|Coldest month:||July||14.7°C 58.5°F|
|Wettest month:||October||88mm 3.5ins|