Mercedes Weather in September

With daytime temperatures of 23°C (73°F) and nighttime lows of 11°C (52°F), September in Mercedes brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 91 mm (3.6 in) falls on average.

Rainfall in Mercedes in September

The climate data from previous years indicates about of rain, averaging 91 mm (3.6 in) for the month.

Temperature in Mercedes in September

Mercedes in September has perfect weather. Days reach 23°C (73°F) and nights cool to 11°C (52°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights drop to around 11°C (52°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Mercedes in September

The month enjoys around 217 hours of sunshine, creating mostly sunny days with good weather conditions.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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For a detailed overview over the year and the best time to visit Argentina, check out our Mercedes's climate page.

Mercedes Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 23°C (73°F)  

Precipitation 91 mm (3.6 in)  

Humidity 74%  

Sunshine 217 hours  

Percentage Sunshine  

Historical weather for Mercedes in September

Browse day-by-day weather records for Mercedes spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Mercedes historical weather extremes in September

Based on weather observations in Mercedes between 2006 and 2025, these are the recorded extremes during September.

• On September 30, 2019, temperatures climbed to 37°C (99°F), marking the warmest September day on record.
• The lowest daytime temperature in September was 9°C (48°F), recorded on September 3, 2016.
• The lowest overnight temperature recorded in September was 0°C (32°F) (September 5, 2006).

What to Wear in Mercedes in September

For Mercedes in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Mercedes in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Argentina, check out our Mercedes's climate page.

More climate data for Mercedes

Temperature Rainfall Sunshine Humidity

See the full Mercedes climate overview or explore weather in Argentina.