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In Salto, December brings very high daytime temperatures around 31°C (88°F), with nights cooling to 18°C (64°F). Expect quite a bit of rainfall this month.
If you prefer dry days with pleasant temperatures, August and September typically offer 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.
Pick a month to see the average temperature, rainfall and sunshine in Salto - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Salto typically stay consistent throughout December, with daily highs averaging around 31°C (88°F). Nights are pleasant, with lows typically ranging from 17°C (63°F) to 20°C (68°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Salto spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
According to our 49 years of weather records for Salto, the following extremes were recorded between 1976 and 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 December →
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 December 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. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Salto climate overview or explore weather in Uruguay.
Where to go in December - average daytime high across popular destinations.
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