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San Gregorio de Polanco Weather in September
During September, San Gregorio de Polanco experiences pleasant daytime temperatures of 21°C (70°F) and cooler nights around 10°C (50°F). Expect quite a bit of rainfall. Around 120 mm (4.7 in) is typical.
Rainfall in San Gregorio de Polanco in September
Climate statistics over the past 30 years suggest around 10 days of rain, with 120 mm (4.7 in) average for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in San Gregorio de Polanco in September
Expect highs of 21°C (70°F) in San Gregorio de Polanco in September, with nights dropping to around 10°C (50°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. At 10°C (50°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in San Gregorio de Polanco in September
Expect a lot of sunshine this month, with about 193 hours of sun. These sunny conditions add to the overall experience.If your ideal day consists of dry skies and pleasant temperatures, March typically offers the best circumstances for San Gregorio de Polanco.
San Gregorio de Polanco Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
21°C (70°F)
Chance of Rain
32%
Precipitation
120 mm (4.7 in)
Rainy days
10 days
Humidity
73% *
Sunshine
193 hours *
Percentage Sunshine
*
* Data from: Paso de los Toros, Uruguay (67 KM, 41 Miles).
San Gregorio de Polanco Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Gregorio de Polanco - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in San Gregorio de Polanco typically stay consistent throughout September, with daily highs averaging around 21°C (70°F). Nights are cool, with lows typically ranging from 8°C (46°F) to 11°C (52°F).
Average temperatures in September
Historical weather records for San Gregorio de Polanco in September
Browse day-by-day weather records for San Gregorio de Polanco spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Gregorio de Polanco historical weather extremes in September
Based on 45 years of weather observations (1981-2026), these are the most extreme conditions recorded in San Gregorio de Polanco.
- The warmest day in September was on September 11, 2013, with a maximum of 35°C (95°F).
- The lowest daytime temperature in September was 7°C (45°F), recorded on September 16, 1986.
- Nighttime temperatures dropped to -1°C (30°F) on September 2, 1990, marking the coldest September night on record.
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 San Gregorio de Polanco in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in San Gregorio de Polanco 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
San Gregorio de Polanco 3-Day Forecast
More climate data for San Gregorio de Polanco
Temperature Rainfall Sunshine Humidity
See the full San Gregorio de Polanco 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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