Santa Rosa weather in August

In August, Santa Rosa sees average daytime highs of 25°C and overnight lows near 11°C, with 16 mm of rain across 3.6 wet days and about 11.2 hours of daylight. It is the 9th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 23°C in the first days to 27°C by the end. The sky is clear or mostly clear about 63% of the time in August, and the air most often feels dry.

Daylight stretches from about 10 h 54 min at the start of August to 11 h 30 min by month's end. Set against the rest of the year, August is Santa Rosa's 1st-clearest and 4th-windiest month. For the whole year in context, see Santa Rosa's year-round climate.

Daytime high
25°
9th warmest
Overnight low
11°
3rd coldest
Rainfall
16 mm
3.6 wet days
Daylight
11 h 12 min
7:46 AM – 6:57 PM
Cloud cover
34%
1st clearest
Wind
6 km/h
4th windiest
Solar energy
4.57 kWh/m²
Travel score
8.3
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 23°C in the first days to 27°C by the end.

A typical August day in Santa Rosa reaches about 25°C in the afternoon and slips back to 11°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 32°C. Set against its neighbours, August runs about 4°C warmer than July and about 3°C cooler than September.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12210
22310
32310
42310
52310
62310
72310
82310
92410
102411
112411
122411
132411
142411
152511
162511
172511
182511
192512
202512
212612
222612
232612
242612
252612
262612
272613
282613
292713
302713
312713

How August really feels in Santa Rosa

Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

August 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 August compares with the rest of the year at a glance. August is the 9th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 22°22416.513.33.7
Feb30° / 21°22816.212.84.1
Mar28° / 20°24918.112.24.8
Apr25° / 17°16215.311.55.9
May22° / 14°7911.910.96.3
Jun20° / 11°387.910.66.6
Jul21° / 235.110.77.5
Aug25° / 11°163.611.28.3
Sep28° / 15°224.311.97.1
Oct30° / 18°819.512.55.0
Nov31° / 20°12611.913.14.3
Dec31° / 21°21815.413.43.7

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 63% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 10% of August, with mostly cloudy or overcast conditions the remaining 28%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17228
27129
37129
47129
57129
67129
77129
87129
97030
107129
117129
127030
137030
147129
157129
167228
177228
187327
197327
207327
217327
227426
237426
247426
257525
267426
277426
287525
297426
307426
317426

Chance of precipitation in August

Any precipitation

Santa Rosa gets around 16 mm of rain over 3.6 wet days in August, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 12% and peaks near 14% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
113
214
314
414
514
614
714
814
913
1013
1113
1213
1312
1412
1512
1612
1711
1811
1910
2010
2110
2210
2310
2410
2510
2610
2711
2811
2911
3011
3112

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the dry band about 79% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
183116
283116
382126
482126
582126
681136
782135
881145
981145
1081154
1181154
1281154
1380164
1480164
1580164
1679174
1779174
1879174
1979174
2078184
2178184
2277185
2377185
2477185
2577185
2676186
2776186
2875187
2975187
3075187
3175178

Wind in August

Winds average 6 km/h in August.

Across August, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 10 h 54 min at the start of August to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over August. Sunrise moves from 7:57 AM to 7:33 AM, and sunset from 6:51 PM to 7:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.97:576:51
210.97:566:51
310.97:556:52
411.07:556:52
511.07:546:53
611.07:546:53
711.07:536:54
811.07:526:54
911.07:526:54
1011.17:516:55
1111.17:506:55
1211.17:496:56
1311.17:496:56
1411.17:486:56
1511.27:476:57
1611.27:466:57
1711.27:456:58
1811.27:456:58
1911.27:446:58
2011.37:436:59
2111.37:426:59
2211.37:417:00
2311.37:407:00
2411.37:397:00
2511.47:387:01
2611.47:387:01
2711.47:377:01
2811.47:367:02
2911.57:357:02
3011.57:347:02
3111.57:337:03

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.57 kWh/m².

For context, solar energy here swings from a low near 2.94 kWh/m² to a high of 5.68 kWh/m² in December across the year — August's 4.57 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.2Bright
54.2Bright
64.2Bright
74.2Bright
84.3Bright
94.3Bright
104.3Bright
114.4Bright
124.4Bright
134.5Bright
144.5Bright
154.5Bright
164.6Bright
174.6Bright
184.7Bright
194.7Bright
204.7Bright
214.8Bright
224.8Bright
234.8Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in August

Hazard calendar for Santa Rosa

In seasonPeak

None of Santa Rosa's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Santa Rosa's monsoon runs November–April, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Santa Rosa?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

8.3
Sightseeing
1st-best month of the year
7.2
Beach & pool
2nd-best month of the year

August is one of the better times to visit Santa Rosa for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Santa Rosa in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Santa Rosa sees daytime highs around 25°C and nights near 11°C. Worth packing: light clothes and sun protection. About 4 days see rain.

light clothessun protection

UV index in Santa Rosa in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 — 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 18UV 15Jul 11UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar13Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep10Very high
Oct8Very high
Nov13Extreme
Dec14Extreme

Air quality in Santa Rosa in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August 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).

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateSep 2135 µg/m³May 135 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar7Good
Apr5Good
May4Good
Jun7Good
Jul8Good
Aug15Moderate
Sep36Poor
Oct32Moderate
Nov27Moderate
Dec17Moderate
Location & terrain

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.

3 km
78 m
16 km
433 m
80 km
4,850 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Pichanal 23 km · San Ramón de la Nueva Orán 30 km · Embarcación 39 km · Libertador General San Martín 60 km · Bermejo 74 km · San Pedro de Jujuy 103 km · General Mosconi 109 km · Tartagal 116 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
Roman Catholic 63%none 19%Evangelical 15%Jehovah's Witness and Church of Jesus Christ 1%

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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).