La Plata Weather in September
What's the weather like in La Plata (Buenos Aires) in September 2025?
The climate in La Plata during September can be summarized as mild and a little damp.
September is in the spring in La Plata and is typically the 4th coldest month of the year. Daytime maximum temperatures average around 18°C (64°F), whilst at night 8°C (47°F) is normal.
| Daytime temperature | 17.9°C 64.2°F |
|---|---|
| Nightly temperature | 8.1°C 46.6°F |
| Average temperature | 13°C 55.4°F |
| Daily sunshine | 6.3 hrs |
| Avg rainfall | 84 mm 3.3 ins |
| Rainy days | 7 days |
| Sea temperature | 12.5°C 54.6°F |
| Humidity | 76% |
| Windspeed | 17.3kph 11 mph |
On average September is the 6th driest month of the year in La Plata with around 84mm 3.3 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.3 hours of sunshine per day.
September temperatures in La Plata
September rainfall
September hourly sunshine
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 La Plata in September 2025.
Other monthly averages
Best places to visit in September
La Plata weather stats
| Hottest month: | January | 28.4°C 83.1°F |
|---|---|---|
| Driest month: | July | 60mm 2.4ins |
| Sunniest month: | February | 8.8hrs |
| Coldest month: | July | 14.2°C 57.6°F |
| Wettest month: | March | 121mm 4.8ins |
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