Tres Arroyos weather in August

In August, Tres Arroyos sees average daytime highs of 15°C and overnight lows near 5°C, with 47 mm of rain across 5.8 wet days and about 10.5 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 14°C in the first days to 16°C by the end. The sky is clear or mostly clear about 36% of the time in August, and the air most often feels dry.

Daylight stretches from about 10 hours at the start of August to 11 h 06 min by month's end. Set against the rest of the year, August is Tres Arroyos's 8th-clearest and 4th-windiest month. For the whole year in context, see Tres Arroyos's year-round climate.

Daytime high
15°
10th warmest
Overnight low
3rd coldest
Rainfall
47 mm
5.8 wet days
Daylight
10 h 30 min
7:50 AM – 6:20 PM
Cloud cover
56%
8th clearest
Wind
16 km/h
4th windiest
Solar energy
3.05 kWh/m²
Travel score
4.9
out of 10

Tres Arroyos is city in Buenos Aires Province, Argentina.

Density
3,139/km²
people per km²
Founded
1884

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 14°C in the first days to 16°C by the end.

A typical August day in Tres Arroyos reaches about 15°C in the afternoon and slips back to 5°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 9°C and 20°C. Set against its neighbours, August runs about 2°C warmer than July and about 2°C cooler than September.

10°20°151015202531
Avg high (°C)Avg low (°C)
1134
2144
3144
4144
5144
6144
7144
8144
9144
10144
11144
12144
13155
14155
15155
16155
17155
18155
19155
20155
21155
22155
23155
24165
25165
26165
27165
28165
29165
30165
31165

How August really feels in Tres Arroyos

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.

Tres Arroyos weather by month

How August compares with the rest of the year at a glance. August is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 15°749.714.46.1
Feb27° / 15°758.313.56.9
Mar25° / 13°768.212.37.4
Apr21° / 10°647.2116.9
May17° / 466.29.95.7
Jun13° / 335.29.44.2
Jul13° / 386.19.63.8
Aug15° / 475.810.54.9
Sep17° / 516.911.75.8
Oct20° / 789.4136.4
Nov23° / 11°839.314.17.1
Dec27° / 14°788.814.66.9

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 13% of August, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
24951
34951
44951
54852
64852
74951
84852
94852
104852
114852
124852
134852
144951
154951
164951
174951
185050
195050
205050
215050
225149
235149
245149
255149
264951
275050
285050
294951
304951
314951

Chance of precipitation in August

Any precipitation

Tres Arroyos gets around 47 mm of rain over 5.8 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 19% and peaks near 20% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
117
217
317
417
518
618
718
818
919
1019
1119
1219
1319
1420
1520
1620
1720
1820
1920
2020
2120
2220
2320
2420
2519
2619
2719
2819
2920
3020
3120

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19910
29910
39910
49910
59910
69910
79910
89910
99910
109910
119910
129910
139910
149910
159910
169910
179910
189910
199910
209910
219910
229910
239910
249910
259910
269820
279820
289820
299820
309820
319721

Wind in August

Winds average 16 km/h in August.

Across August, daily wind ranges from about 16 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 10 hours at the start of August to 11 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over August. Sunrise moves from 8:08 AM to 7:29 AM, and sunset from 6:07 PM to 6:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.08:086:07
210.08:076:08
310.08:066:08
410.18:056:09
510.18:046:10
610.18:026:11
710.28:016:12
810.28:006:13
910.27:596:14
1010.37:586:15
1110.37:576:16
1210.47:556:16
1310.47:546:17
1410.47:536:18
1510.57:526:19
1610.57:506:20
1710.57:496:21
1810.67:486:22
1910.67:466:23
2010.67:456:24
2110.77:436:25
2210.77:426:26
2310.87:416:26
2410.87:396:27
2510.87:386:28
2610.97:366:29
2710.97:356:30
2811.07:336:31
2911.07:326:32
3011.07:306:33
3111.17:296:34

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 3.05 kWh/m².

For context, solar energy here swings from a low near 1.95 kWh/m² to a high of 7.77 kWh/m² in December across the year — August's 3.05 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
12.6Moderate
22.6Moderate
32.6Moderate
42.7Moderate
52.7Moderate
62.7Moderate
72.8Moderate
82.8Moderate
92.8Moderate
102.9Moderate
112.9Moderate
122.9Moderate
133.0Moderate
143.0Moderate
153.0Moderate
163.0Moderate
173.1Moderate
183.1Moderate
193.2Moderate
203.2Moderate
213.2Moderate
223.3Moderate
233.3Moderate
243.3Moderate
253.4Moderate
263.4Moderate
273.5Moderate
283.5Moderate
293.5Moderate
303.6Moderate
313.6Moderate
Planning a trip in August

Is August a good time to visit Tres Arroyos?

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

4.9
Sightseeing
10th-best month of the year
0.2
Beach & pool
10th-best month of the year

August is a reasonable time to visit Tres Arroyos for sightseeing.

What to pack for Tres Arroyos in August

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

In August, Tres Arroyos sees daytime highs around 15°C and nights near 5°C. Worth packing: a warm layer. About 6 days see rain.

a warm layer

Sea temperature near Tres Arroyos in August

The nearest coast averages about 10°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 56 km away) is warmest in February at about 21°C and coldest in August near 10°C.

It's comfortable for a long swim from Jan 8 to Mar 21 — about 2.4 months when the water holds above 20°C.

10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb21Refreshing
Mar20Refreshing
Apr18Cool
May15Cool
Jun12Bracing
Jul10Bracing
Aug10Bracing
Sep11Bracing
Oct13Bracing
Nov16Cool
Dec18Cool

UV index in Tres Arroyos in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tres Arroyos peaks around December 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateModerateVery highExtremeDec 20UV 12Jun 21UV 2
UV index (midday)Level
Jan12Extreme
Feb12Extreme
Mar8Very high
Apr6High
May3Moderate
Jun2Low
Jul2Moderate
Aug3Moderate
Sep5Moderate
Oct7Very high
Nov10Very high
Dec13Extreme
Location & terrain

Where is Tres Arroyos?

Tres Arroyos sits at 38.4°S, 60.3°W, 100 m above sea level, in Argentina. The nearest listed city is Benito Juárez, 89 km away.

Topography around Tres Arroyos

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tres Arroyos.

Within 3 km, the terrain around Tres Arroyos has only modest variations in elevation — a maximum elevation change of 21 m around an average of 109 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 93 m; within 80 km, significant variations in elevation — a maximum elevation change of 268 m.

The land around Tres Arroyos is covered by artificial surfaces (43%) and grassland (41%) within 3 km, cropland (81%) within 16 km, and cropland (61%) and grassland (28%) within 80 km.

3 km
21 m
16 km
93 m
80 km
268 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Benito Juárez 89 km · Coronel Pringles 104 km · Necochea 135 km · Tandil 154 km · Olavarría 165 km · Punta Alta 166 km · Bahía Blanca 177 km · Coronel Suárez 178 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 Tres Arroyos (-38.3769°, -60.2756°, elevation 100 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).