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January in Mercedes averages 32°C (90°F) during the day and 19°C (66°F) at night. Quite a bit of rainfall is typical this month, with around 103 mm (4.1 in) on average. An umbrella is a good idea.
If you prefer dry days with pleasant temperatures, January may not be the ideal month to visit Mercedes. Our weather planner can help you explore destinations with more pleasant weather conditions.
Pick a month to see the average temperature, rainfall and sunshine in Mercedes - and find the best time to visit.
51-year average (1976-2026)
Based on our historical records, temperatures in Mercedes typically stay consistent throughout January, with daily highs averaging around 32°C (90°F). Nights are pleasant, with lows around 19°C (66°F).
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Mercedes spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
The extremes listed below come from historical weather data collected in Mercedes from 1976 through 2025.
Find out more about the weather in Uruguay and which places have the best travel conditions in this month. See all of Uruguay in January →
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).
Warm temperatures in January make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Mercedes climate overview or explore weather in Uruguay.
Where to go in January - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
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