Treinta y Tres in Winter
In winter (June, July and August), Treinta y Tres sees average daytime highs around 17°C and overnight lows near 8°C, with 282 mm of rain over about 24 wet days across the season. It is the coldest season of the year and the 3rd-wettest season.
Across winter, daytime highs hold fairly steady around 17°C. The sky is clear or mostly clear about 30% of the time across winter, and the air most often feels dry.
Winter is Treinta y Tres's weakest season of the year to visit on our travel score. For the whole year in context, see Treinta y Tres's year-round climate.
- Avg daytime high
- 17°C
- coldest season of the year
- Avg overnight low
- 8°C
- Rainfall
- 282 mm
- 24 wet days
- Avg wind
- 13 km/h
- Travel score
- 5.6
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Treinta y Tres in Winter
Across winter, daytime highs hold fairly steady around 17°C.
A typical winter day in Treinta y Tres reaches about 17°C and drops to 8°C overnight. The warmest of the three months is August, the coolest July.
Treinta y Tres weather by month
How the three winter months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 29° / 18° | 83 | 8.5 | 13.9 | 5.8 |
| Feb | 28° / 18° | 94 | 8.9 | 13.2 | 6.1 |
| Mar | 27° / 16° | 82 | 8.7 | 12.3 | 6.8 |
| Apr | 23° / 14° | 108 | 8.7 | 11.2 | 7.0 |
| May | 19° / 10° | 97 | 7 | 10.3 | 6.6 |
| Jun | 17° / 8° | 91 | 8.1 | 9.8 | 5.5 |
| Jul | 16° / 7° | 89 | 8 | 10 | 5.3 |
| Aug | 18° / 8° | 103 | 8.2 | 10.8 | 6.1 |
| Sep | 19° / 9° | 99 | 8.6 | 11.8 | 6.3 |
| Oct | 22° / 12° | 112 | 10 | 12.8 | 6.6 |
| Nov | 25° / 14° | 92 | 8.1 | 13.7 | 7.2 |
| Dec | 28° / 16° | 87 | 8.4 | 14.2 | 6.6 |
Cloud cover in Winter
The sky is clear or mostly clear about 30% of the time across winter.
Chance of precipitation in Winter
Treinta y Tres gets around 282 mm of rain over 24 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 13 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 hours in early June to 11 h 12 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 2.6 kWh/m².
Is winter a good time to visit Treinta y Tres?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit Treinta y Tres for sightseeing.
What to pack for Treinta y Tres in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Treinta y Tres sees daytime highs around 17°C and nights near 8°C. Worth packing: a warm layer and rain gear. About 24 days see rain.
UV index in Treinta y Tres in Winter
Clear-sky midday UV across winter averages around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Treinta y Tres peaks around January 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 13 | 12 | 10 | 6 | 4 | 3 | 3 | 4 | 6 | 8 | 11 | 12 |
| Level | Extreme | Extreme | Very high | High | Moderate | Moderate | Moderate | Moderate | High | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 12 | Extreme |
| Mar | 10 | Very high |
| Apr | 6 | High |
| May | 4 | Moderate |
| Jun | 3 | Moderate |
| Jul | 3 | Moderate |
| Aug | 4 | Moderate |
| Sep | 6 | High |
| Oct | 8 | Very high |
| Nov | 11 | Extreme |
| Dec | 12 | Extreme |
Where is Treinta y Tres?
Treinta y Tres sits at 33.2°S, 54.4°W, 55 m above sea level, in Uruguay. The nearest listed city is Melo, 98 km away.
Topography around Treinta y Tres
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Treinta y Tres.
Within 3 km, the terrain around Treinta y Tres has only modest variations in elevation — a maximum elevation change of 44 m around an average of 40 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 144 m; within 80 km, significant variations in elevation — a maximum elevation change of 375 m.
The land around Treinta y Tres is covered by grassland (38%), trees (35%) and artificial surfaces (24%) within 3 km, grassland (72%) within 16 km, and grassland (69%) within 80 km.
Uruguay travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F / I / L
- 230 V · 50 Hz
- Prices
- ≈ 66% of US
- price level, 2025
- GDP per capita
- $25,216
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Homicide rate
- 11.2
- per 100k, 2023
- Road deaths
- 14.8
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 542
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Treinta y Tres (-33.231°, -54.3858°, elevation 55 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.