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Aiguá Weather in September
September in Aiguá brings pleasant temperatures around 19°C (66°F) during the day, dropping to 8°C (46°F) at night, with quite a bit of rainfall expected, averaging around 100 mm (3.9 in) for the month.
Rainfall in Aiguá in September
Typically around 10 days of rainfall are expected, averaging 100 mm (3.9 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Aiguá in September
In September, expect pleasant temperatures in Aiguá, with highs of 19°C (66°F) and lows of 8°C (46°F) at night. Conditions are often most pleasant around the middle of the day. Nights fall to 8°C (46°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Aiguá in September
The city usually sees around 182 hours of sunlight, indicating a moderately sunny period.Should you favor a climate that's both dry and comfortably warm, January and December typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Aiguá Temperature in September
Min Temperature
8°C (46°F)
Max Temperature
19°C (66°F)
Chance of Rain
34%
Precipitation
100 mm (3.9 in)
Rainy days
10 days
Humidity
79% *
Sunshine
182 hours *
Percentage Sunshine
*
* Data from: Rocha, Uruguay (49 KM, 30 Miles).
Aiguá Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Aiguá - and find the best time to visit.
Daily Historical Temperatures
47-year average (1979-2025)
Based on our historical records, temperatures in Aiguá typically stay consistent throughout September, with daily highs averaging around 19°C (66°F). Nights are cool, with lows typically ranging from 7°C (45°F) to 10°C (50°F).
Average temperatures in September
Daily Historical Precipitation
47-year average (1979-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Aiguá in September
Browse day-by-day weather records for Aiguá spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Aiguá historical weather extremes in September
Based on 44 years of weather observations in Aiguá between 1981 and 2025, these are the recorded extremes.
- The warmest day in September was on September 10, 2013, with a maximum of 32°C (90°F).
- On September 5, 2008, Aiguá saw its coldest September day with temperatures maxing out at 9°C (48°F).
- Aiguá registered its coldest September night on September 4, 1988, with temperatures dropping to -3°C (27°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
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Aiguá in September
For Aiguá 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. Sunglasses could come in handy during the sunnier parts of your trip.
What To Do in Aiguá in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling9/10 -
Walking9/10 -
Camping3/10 -
Outdoor sports9/10
Aiguá 3-Day Forecast
More climate data for Aiguá
Temperature Rainfall Sunshine Humidity
See the full Aiguá climate overview or explore weather in Uruguay.
Popular in September
Where to go in September - average daytime high across popular destinations.
Colonia del Sacramento
18°C (64°F) Montevideo18°C (64°F) La Pedrera17°C (63°F) José Ignacio
17°C (63°F) Piriápolis17°C (63°F) La Paloma16°C (61°F) Punta Del Diablo17°C (63°F) Punta del Este16°C (61°F) Bucket list
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