San Isidro weather in August

In August, San Isidro sees average daytime highs of 19°C and overnight lows near 5°C, with 17 mm of precipitation across 3.3 wet days and about 11 hours of daylight. It is the 9th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 20°C by the end. The sky is clear or mostly clear about 68% of the time in August, and the air most often feels dry.

Daylight stretches from about 10 h 36 min at the start of August to 11 h 24 min by month's end. Set against the rest of the year, August is San Isidro's 1st-clearest and 5th-windiest month. For the whole year in context, see San Isidro's year-round climate.

Daytime high
19°
9th warmest
Overnight low
3rd coldest
Precipitation
17 mm
3.3 wet days
Daylight
11 hours
7:58 AM – 6:56 PM
Cloud cover
28%
1st clearest
Wind
7 km/h
5th windiest
Solar energy
4.66 kWh/m²
Travel score
7.6
out of 10

San Isidro is city in Valle Viejo Department, Catamarca Province, Argentina.

Founded
1698

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 17°C in the first days to 20°C by the end.

A typical August day in San Isidro reaches about 19°C in the afternoon and slips back to 5°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 26°C. Set against its neighbours, August runs about 3°C warmer than July and about 2°C cooler than September.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1173
2173
3173
4183
5183
6184
7184
8184
9184
10184
11184
12194
13194
14194
15194
16195
17195
18195
19195
20195
21205
22205
23205
24206
25206
26206
27206
28206
29206
30206
31206

San Isidro weather by month

How August compares with the rest of the year at a glance. August is the 9th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan26° / 17°16716.7013.65.7
Feb25° / 16°11713.70136.1
Mar23° / 15°10913.2012.26.4
Apr21° / 11°659.70.211.36.6
May18° / 376.90.210.66.5
Jun17° / 204.10.410.26.3
Jul16° / 153.30.910.46.5
Aug19° / 173.30.4117.6
Sep21° / 325.40.411.87.6
Oct23° / 11°6510012.77.2
Nov24° / 14°9812.9013.46.6
Dec26° / 16°12915.4013.86.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 68% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 11% of August, with mostly cloudy or overcast conditions the remaining 21%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18119
28020
37921
47921
57921
67921
77822
87822
97921
107921
117921
127921
137921
148020
158020
168020
178020
188020
198020
208119
218020
228020
238020
248020
257921
267921
277822
287822
297822
307723
317723

Chance of precipitation in August

Any precipitationSnow

San Isidro gets around 17 mm of rain and snow over 3.3 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 11% and peaks near 13% on the wettest days, and about 0 day brings snow.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
1102
2102
3102
4102
5102
6102
7101
8111
9111
10111
11111
12111
13111
14111
15111
16111
17111
18101
19101
20101
21101
22101
23111
24111
25112
26122
27122
28122
29122
30132
31132

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
27991
28991
29991
30991
31991

Wind in August

Winds average 7 km/h in August.

Across August, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 10 h 36 min at the start of August to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over August. Sunrise moves from 8:10 AM to 7:42 AM, and sunset from 6:48 PM to 7:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.68:106:48
210.68:096:48
310.78:096:49
410.78:086:50
510.78:076:50
610.78:066:51
710.88:066:51
810.88:056:52
910.88:046:52
1010.88:036:53
1110.98:026:53
1210.98:016:54
1310.98:016:55
1410.98:006:55
1511.07:596:56
1611.07:586:56
1711.07:576:57
1811.07:566:57
1911.17:556:58
2011.17:546:58
2111.17:536:59
2211.17:527:00
2311.27:517:00
2411.27:507:01
2511.27:487:01
2611.27:477:02
2711.37:467:02
2811.37:457:03
2911.37:447:03
3011.37:437:04
3111.47:427:04

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.66 kWh/m².

For context, solar energy here swings from a low near 3.4 kWh/m² to a high of 6.6 kWh/m² in December across the year — August's 4.66 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.4Bright
94.4Bright
104.4Bright
114.5Bright
124.5Bright
134.5Bright
144.6Bright
154.6Bright
164.7Bright
174.7Bright
184.7Bright
194.8Bright
204.8Bright
214.8Bright
224.9Bright
234.9Bright
244.9Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in August

Hazard calendar for San Isidro

In seasonPeak

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

San Isidro's rainy season runs November–March, when most of the year's rain falls.

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

Is August a good time to visit San Isidro?

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

7.6
Sightseeing
1st-best month of the year
3.2
Beach & pool
9th-best month of the year

August is one of the better times to visit San Isidro for general sightseeing.

What to pack for San Isidro in August

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

In August, San Isidro sees daytime highs around 19°C and nights near 5°C. Worth packing: a warm layer and sun protection. About 3 days see rain.

a warm layersun protection

UV index in San Isidro in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks 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 San Isidro peaks around January 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeHighModerateHighVery highExtremeJan 18UV 15Jun 22UV 4
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr7Very high
May5High
Jun4Moderate
Jul4Moderate
Aug6High
Sep8Very high
Oct12Extreme
Nov13Extreme
Dec14Extreme
Location & terrain

Where is San Isidro?

San Isidro sits at 28.5°S, 65.7°W, 518 m above sea level, in Argentina. The nearest listed city is Catamarca, 6.0 km away.

Topography around San Isidro

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

Within 3 km, the terrain around San Isidro has only modest variations in elevation — a maximum elevation change of 134 m around an average of 522 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,541 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,232 m.

The land around San Isidro is covered by artificial surfaces (33%), trees (24%) and shrubs (21%) within 3 km, trees (40%) and shrubs (38%) within 16 km, and shrubs (44%) and trees (24%) within 80 km.

3 km
134 m
16 km
1,541 m
80 km
4,232 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
August weather nearby: Catamarca 6.0 km · Aimogasta 106 km · Aguilares 115 km · Termas de Río Hondo 137 km · Monteros 145 km · La Rioja 153 km · Belén 156 km · Famaillá 159 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 San Isidro (-28.4578°, -65.725°, elevation 518 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).