Riachuelo Weather in September
With daytime temperatures of 19°C (66°F) and nighttime lows of 11°C (52°F), September in Riachuelo brings pleasant temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 86 mm (3.4 in) falls on average.
Rainfall in Riachuelo in September
You can expect rain on around 8 days based on historical patterns, with 86 mm (3.4 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Riachuelo in September
September in Riachuelo brings typical temperatures with highs around 19°C (66°F) and lows of 11°C (52°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 11°C (52°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.If you prefer dry days with pleasant temperatures, January and December typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Uruguay, check out our Riachuelo's climate page.
Riachuelo Temperature in September
Min Temperature
11°C (52°F)
Max Temperature
19°C (66°F)
Chance of Rain
27%
Precipitation
86 mm (3.4 in)
Rainy days
8 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Riachuelo typically stay consistent throughout September, with daily highs averaging around 19°C (66°F). Nights are cool, with lows typically ranging from 9°C (48°F) to 12°C (54°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Riachuelo in September
Browse day-by-day weather records for Riachuelo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Riachuelo historical weather extremes in September
According to our 49 years of weather records for Riachuelo, the following extremes were recorded between 1976 and 2025.
- On September 10, 2013, temperatures climbed to 32°C (90°F), marking the warmest September day on record.
- The coldest September day was on September 6, 2008, with a maximum of 8°C (46°F).
- Riachuelo registered its coldest September night on September 8, 1983, with temperatures dropping to 1°C (34°F).
Best Places in Uruguay in September
Find out more about the weather in Uruguay and which places have the best travel conditions in this month. See all of Uruguay in September →
perfect weather
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tolerable
unpleasant
poor
What to Wear in Riachuelo in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes.What To Do in Riachuelo in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Uruguay, check out our Riachuelo's climate page.
See the full Riachuelo climate overview or explore weather in Uruguay.
