Ciudad de la Costa Weather in September
September in Ciudad de la Costa sees daytime temperatures around 18°C (64°F) and lows of 10°C (50°F) at night. With around 95 mm (3.7 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Ciudad de la Costa in September
Records from the past 30 years suggest around 9 days of rain, with 95 mm (3.7 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 Ciudad de la Costa in September
September in Ciudad de la Costa brings typical temperatures with highs around 18°C (64°F) and lows of 10°C (50°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights cool down to 10°C (50°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Ciudad de la Costa in September
The area enjoys a moderate level of sunlight, with around 183 hours. It's a good balance between sunny and cloudy days.
Wind Speed in Ciudad de la Costa in September
Average wind conditions reach 6 m/s (12 knots) in September. This creates notably windy weather that is clearly felt and can influence daily activities. Keep in mind this is an average. Some days are less intense, while others can be quite gusty.
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.For Ciudad de la Costa itself, January, March, November and December generally stand out with 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 Ciudad de la Costa's climate page.
Ciudad de la Costa Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
18°C (64°F)
Water Temperature
13°C (55°F) *
Chance of Rain
30%
Precipitation
95 mm (3.7 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 Ciudad de la Costa 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 Ciudad de la Costa in September
Browse day-by-day weather records for Ciudad de la Costa spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ciudad de la Costa historical weather extremes in September
Our historical data for Ciudad de la Costa spans 1976 to 2025, revealing these weather extremes.
- Ciudad de la Costa recorded its highest September temperature of 33°C (91°F) on September 30, 2024.
- The lowest daytime temperature in September was 9°C (48°F), recorded on September 17, 2013.
- Ciudad de la Costa registered its coldest September night on September 2, 1990, with temperatures dropping to -2°C (28°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
What to Wear in Ciudad de la Costa 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. Expect water temperatures of around 13°C (55°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Ciudad de la Costa 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 Ciudad de la Costa's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Ciudad de la Costa climate overview or explore weather in Uruguay.
