Santa Rosa in Winter
In winter (June, July and August), Santa Rosa sees average daytime highs around 22°C and overnight lows near 10°C, with 78 mm of rain over about 17 wet days across the season. It is the coldest season of the year and the driest season of the year.
Over the season highs climb from about 20°C in early June to 27°C by late August. The sky is clear or mostly clear about 51% of the time across winter, and the air most often feels dry.
Winter is Santa Rosa's best season of the year to visit on our travel score. For the whole year in context, see Santa Rosa's year-round climate.
- Avg daytime high
- 22°C
- coldest season of the year
- Avg overnight low
- 10°C
- Rainfall
- 78 mm
- 17 wet days
- Avg wind
- 6 km/h
- Travel score
- 7.5
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Santa Rosa in Winter
Over the season highs climb from about 20°C in early June to 27°C by late August.
A typical winter day in Santa Rosa reaches about 22°C and drops to 10°C overnight. The warmest of the three months is August, the coolest July.
How winter really feels in Santa Rosa
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
winter sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Santa Rosa 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 | 31° / 22° | 224 | 16.5 | 13.3 | 3.7 |
| Feb | 30° / 21° | 228 | 16.2 | 12.8 | 4.1 |
| Mar | 28° / 20° | 249 | 18.1 | 12.2 | 4.8 |
| Apr | 25° / 17° | 162 | 15.3 | 11.5 | 5.9 |
| May | 22° / 14° | 79 | 11.9 | 10.9 | 6.3 |
| Jun | 20° / 11° | 38 | 7.9 | 10.6 | 6.6 |
| Jul | 21° / 9° | 23 | 5.1 | 10.7 | 7.5 |
| Aug | 25° / 11° | 16 | 3.6 | 11.2 | 8.3 |
| Sep | 28° / 15° | 22 | 4.3 | 11.9 | 7.1 |
| Oct | 30° / 18° | 81 | 9.5 | 12.5 | 5.0 |
| Nov | 31° / 20° | 126 | 11.9 | 13.1 | 4.3 |
| Dec | 31° / 21° | 218 | 15.4 | 13.4 | 3.7 |
Cloud cover in Winter
The sky is clear or mostly clear about 51% of the time across winter.
Chance of precipitation in Winter
Santa Rosa gets around 78 mm of rain over 17 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 6 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 42 min in early June to 11 h 30 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 3.7 kWh/m².
Hazard calendar for Santa Rosa
None of Santa Rosa's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Santa Rosa's monsoon runs November–April, when most of the year's rain falls.
Is winter a good time to visit Santa Rosa?
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 one of the better times to visit Santa Rosa for general sightseeing.
What to pack for Santa Rosa in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Santa Rosa sees daytime highs around 22°C and nights near 10°C. Worth packing: light clothes and sun protection. About 17 days see rain.
UV index in Santa Rosa in Winter
Clear-sky midday UV across winter averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Santa Rosa peaks around January 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 5 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 15 | 14 | 13 | 9 | 7 | 6 | 5 | 8 | 10 | 8 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | High | Very high | Very high | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 14 | Extreme |
| Mar | 13 | Extreme |
| Apr | 9 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 5 | High |
| Aug | 8 | Very high |
| Sep | 10 | Very high |
| Oct | 8 | Very high |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Air quality in Santa Rosa in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Santa Rosa is worst in September — around 36 µg/m³ PM2.5 (poor), about 8.2× the cleanest month (May, 4 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 8 | 7 | 5 | 4 | 7 | 8 | 15 | 36 | 32 | 27 | 17 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Poor | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 8 | Good |
| Mar | 7 | Good |
| Apr | 5 | Good |
| May | 4 | Good |
| Jun | 7 | Good |
| Jul | 8 | Good |
| Aug | 15 | Moderate |
| Sep | 36 | Poor |
| Oct | 32 | Moderate |
| Nov | 27 | Moderate |
| Dec | 17 | Moderate |
Where is Santa Rosa?
Santa Rosa sits at 23.4°S, 64.4°W, 341 m above sea level, in Argentina. The nearest listed city is Pichanal, 23 km away.
Topography around Santa Rosa
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Santa Rosa.
Within 3 km, the terrain around Santa Rosa has only modest variations in elevation — a maximum elevation change of 78 m around an average of 352 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 433 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,850 m.
The land around Santa Rosa is covered by cropland (43%) and trees (31%) within 3 km, trees (62%) and cropland (31%) within 16 km, and trees (64%) within 80 km.
Argentina travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / I
- 220 V · 50 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $14,898
- 2025
- Happiness
- 6.4 / 10
- World Happiness, 2025
- Homicide rate
- 4.5
- per 100k, 2023
- Road deaths
- 14.1
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- High
- EF EPI 575
- 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 Santa Rosa (-23.3943°, -64.4251°, elevation 341 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.