Atlántida Weather in September
September in Atlántida brings pleasant temperatures, with daytime highs of 18°C (64°F) and nights around 10°C (50°F). Quite a bit of rainfall is expected, around 96 mm (3.8 in), so pack an umbrella.
Rainfall in Atlántida in September
Based on our climate data of the past 30 years, about 9 days of rain are anticipated, with 96 mm (3.8 in) on average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Atlántida in September
If you're visiting Atlántida in September, expect highs of 18°C (64°F) and overnight lows around 10°C (50°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights drop to 10°C (50°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Atlántida in September
With about 183 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.
Wind Speed in Atlántida in September
Wind speeds average 6 m/s (12 knots) during September. At this speed, expect strong winds that make large branches move and create some resistance when walking. Since this is an average, some days have fresh winds while others have strong breezes that can make umbrellas tricky to control.
Average water temperature in September
With water at 13°C (55°F), it's on the cooler side. Keen swimmers won't be put off, but those who prefer warm water may find it less enjoyable.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, March, November and December typically offer the best weather for Atlántida.
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 Atlántida's climate page.
Atlántida Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
18°C (64°F)
Water Temperature
13°C (55°F) *
Chance of Rain
31%
Precipitation
96 mm (3.8 in)
Rainy days
9 days
Humidity
76% *
Windspeed
6 m/s (12 knots) *
Sunshine
183 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Atlántida typically stay consistent throughout September, with daily highs averaging around 18°C (64°F). Nights are cool, with lows typically ranging from 8°C (46°F) to 10°C (50°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 Atlántida in September
Browse day-by-day weather records for Atlántida spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Atlántida historical weather extremes in September
Based on 49 years of weather observations in Atlántida between 1976 and 2025, these are the recorded extremes.
- Atlántida recorded its highest September temperature of 32°C (90°F) on September 30, 2024.
- The lowest daytime temperature in September was 9°C (48°F), recorded on September 5, 2008.
- Nighttime temperatures dropped to -2°C (28°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
What to Wear in Atlántida in September
For Atlántida 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. With water temperatures around 13°C (55°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Atlántida 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 Atlántida's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Atlántida climate overview or explore weather in Uruguay.
