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The average annual maximum temperature in Mercedes, Soriano, Uruguay is 24°C (75°F), with daytime highs ranging from 17°C (63°F) in July to 32°C (90°F) in January. This page covers monthly averages, day-night differences, and how Mercedes compares to cities worldwide.
In Mercedes, temperatures can shift dramatically between very warm in summer and mild in winter. Nights follow the same pattern, with lows ranging from 19°C (66°F) in January to 7°C (45°F) in July.
The chart below illustrates the average maximum day and minimum night temperatures in Mercedes by month:
The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. January, the city's warmest month, gets 289 hours of sunshine.
The chart below shows the average temperature throughout the year:
Average high and low temperatures for each day of the month based on long-term records. 50-year average (1976-2025)
Browse day-by-day temperature records for Mercedes spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
The map below shows the annual temperature across Uruguay. You can also select individual months if you want to compare a specific time of year.
Mercedes's average annual maximum temperature is 24°C (75°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.
Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate, hot dry summers and mild wet winters.
Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Mercedes, July is the coolest month, with average highs of 17°C (63°F) and humidity around 77%, considered high. In January, the warmest month, temperatures average 32°C (90°F) with 64% humidity, conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Mercedes's weather, including monthly rainfall, sunshine hours, and humidity, visit our Mercedes climate page.
Pick a month to see the average temperature, rainfall and sunshine in Mercedes - and find the best time to visit.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Mercedes climate overview or explore weather in Uruguay.
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