La Plata weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: September – May
What is the weather like in La Plata in September?
In September, La Plata is mild: daytime highs average 17 °C, and nights cool down to about 10 °C. Expect around 6 hours of sunshine a day. Rain falls on about 6 days, adding up to 68 mm. All in all, September is an excellent month for a holiday in La Plata.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 72 | 81 | 83 |
| Day | 15° | 17° | 20° |
| Night | 9° | 10° | 13° |
| Sun | 6 h | 6 h | 7 h |
| Rain days | 6 | 6 | 9 |
More details for September
- Daylight
- 11 h 49 min06:52 – 18:42
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 21 km/haverage daily peakAll months
- Cloud cover
- 52 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC−3America/Argentina/Buenos_Aires
How the score comes together
- Temperatureweight 50 %91 %
- Sunshineweight 20 %53 %
- Few rainy daysweight 30 %84 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
La Plata in September: quick answers
Is La Plata hot in September?
No. In September, La Plata is mild: daytime highs average 17 °C and nights drop to about 10 °C.
Does it rain much in La Plata in September?
Rain falls on about 6 days, adding up to 68 mm.
La Plata month by month
The whole year in La PlataAll destinations: ArgentinaWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences