San Juan weather in June

In June, San Juan sees average daytime highs of 18°C and overnight lows near 3°C, with 8 mm of precipitation across 2 wet days and about 10 hours of daylight. It is the 11th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 18°C through the month. The sky is clear or mostly clear about 63% of the time in June, and the air most often feels dry.

Daylight stretches from about 10 h 06 min at the start of June to 10 hours by month's end. Set against the rest of the year, June is San Juan's 9th-clearest and 9th-windiest month. For the whole year in context, see San Juan's year-round climate.

Daytime high: 18°; 11th warmest
Overnight low: 3°; 2nd coldest
Precipitation: 8 mm; 2 wet days
Daylight: 10 hours; 8:36 AM – 6:33 PM
Cloud cover: 33%; 9th clearest
Wind: 8 km/h; 9th windiest
Solar energy: 3.26 kWh/m²
Travel score: 7.2; out of 10

San Juan is capital of San Juan Province, Argentina.

Density: 3,637/km²; people per km²
Founded: 1562

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

← May San Juan year-round climate July →Best places to visit in June

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 18°C through the month.

A typical June day in San Juan reaches about 18°C in the afternoon and slips back to 3°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 23°C. Set against its neighbours, June runs about 3°C cooler than May and on par with July.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	19	19	18	18	18	18	18	18	18	18	18	18	18	18	18	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17
Avg low (°C)	5	5	4	4	4	4	4	4	4	4	4	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	2	2

	Avg high (°C)	Avg low (°C)
1	19	5
2	19	5
3	18	4
4	18	4
5	18	4
6	18	4
7	18	4
8	18	4
9	18	4
10	18	4
11	18	4
12	18	3
13	18	3
14	18	3
15	18	3
16	17	3
17	17	3
18	17	3
19	17	3
20	17	3
21	17	3
22	17	3
23	17	3
24	17	3
25	17	3
26	17	3
27	17	3
28	17	3
29	17	2
30	17	2

How June really feels in San Juan

Once humidity and wind are folded in, June averages 0 days that feel above 32°C and 2 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in June is cold — wind chill drags the overnight "feels like" below the raw low.

San Juan weather by month

How June compares with the rest of the year at a glance. June is the 11th-warmest and 12th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	33° / 19°	17	3.2	13.8	4.6
Feb	31° / 18°	20	3.4	13.2	5.3
Mar	29° / 16°	24	3.9	12.2	6.9
Apr	24° / 11°	18	3.3	11.3	8.4
May	20° / 7°	11	2.6	10.4	7.8
Jun	18° / 3°	8	2	10	7.2
Jul	17° / 2°	8	2.2	10.2	7.0
Aug	20° / 5°	10	2.3	10.8	8.1
Sep	23° / 9°	18	3.3	11.8	8.5
Oct	26° / 12°	21	3.5	12.8	8.2
Nov	29° / 15°	16	3.2	13.6	6.7
Dec	32° / 18°	22	3.3	14	5.2

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 63% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 13% of June, with mostly cloudy or overcast conditions the remaining 23%. Skies tend to open up as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	76	76	76	76	77	77	77	77	77	76	76	76	76	75	75	75	75	75	76	76	76	77	77	77	77	78	78	79	79	79
Cloudier (%)	24	24	24	24	23	23	23	23	23	24	24	24	24	25	25	25	25	25	24	24	24	23	23	23	23	22	22	21	21	21

	Clearer (%)	Cloudier (%)
1	76	24
2	76	24
3	76	24
4	76	24
5	77	23
6	77	23
7	77	23
8	77	23
9	77	23
10	76	24
11	76	24
12	76	24
13	76	24
14	75	25
15	75	25
16	75	25
17	75	25
18	75	25
19	76	24
20	76	24
21	76	24
22	77	23
23	77	23
24	77	23
25	77	23
26	78	22
27	78	22
28	79	21
29	79	21
30	79	21

Chance of precipitation in June

Any precipitation

San Juan gets around 8 mm of rain and snow over 2 wet days in June, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 7% and peaks near 8% on the wettest days, and about 0 day brings snow.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	7	7	7	6	6	6	6	6	6	7	7	7	7	7	8	8	8	8	8	8	8	8	8	8	7	7	7	7	7	7

	Rain chance (%)
1	7
2	7
3	7
4	6
5	6
6	6
7	6
8	6
9	6
10	7
11	7
12	7
13	7
14	7
15	8
16	8
17	8
18	8
19	8
20	8
21	8
22	8
23	8
24	8
25	7
26	7
27	7
28	7
29	7
30	7

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

Wind in June

Winds average 8 km/h in June.

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

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	8	calm
2	8	calm
3	8	calm
4	8	calm
5	8	calm
6	8	calm
7	8	calm
8	8	calm
9	8	calm
10	8	calm
11	8	calm
12	8	calm
13	8	calm
14	8	calm
15	8	calm
16	8	calm
17	8	calm
18	8	calm
19	8	calm
20	8	calm
21	8	calm
22	8	calm
23	8	calm
24	8	calm
25	8	calm
26	8	calm
27	8	calm
28	8	calm
29	8	calm
30	8	calm

Sunrise & sunset in June

DaylightNight

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

Days shrink by about 6 minutes over June. Sunrise moves from 8:29 AM to 8:38 AM, and sunset from 6:35 PM to 6:36 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	10.1	10.1	10.1	10.1	10.0	10.0	10.0	10.0	10.0	10.0	10.0	10.0	10.0	10.0	10.0	10.0	10.0	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	10.0	10.0	10.0
Sunrise (AM)	8:29	8:29	8:30	8:30	8:31	8:31	8:32	8:32	8:33	8:33	8:34	8:34	8:35	8:35	8:35	8:36	8:36	8:36	8:37	8:37	8:37	8:37	8:38	8:38	8:38	8:38	8:38	8:38	8:38	8:38
Sunset (PM)	6:35	6:34	6:34	6:34	6:34	6:34	6:33	6:33	6:33	6:33	6:33	6:33	6:33	6:33	6:33	6:33	6:33	6:33	6:33	6:34	6:34	6:34	6:34	6:34	6:35	6:35	6:35	6:35	6:36	6:36

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.1	8:29	6:35
2	10.1	8:29	6:34
3	10.1	8:30	6:34
4	10.1	8:30	6:34
5	10.0	8:31	6:34
6	10.0	8:31	6:34
7	10.0	8:32	6:33
8	10.0	8:32	6:33
9	10.0	8:33	6:33
10	10.0	8:33	6:33
11	10.0	8:34	6:33
12	10.0	8:34	6:33
13	10.0	8:35	6:33
14	10.0	8:35	6:33
15	10.0	8:35	6:33
16	10.0	8:36	6:33
17	10.0	8:36	6:33
18	9.9	8:36	6:33
19	9.9	8:37	6:33
20	9.9	8:37	6:34
21	9.9	8:37	6:34
22	9.9	8:37	6:34
23	9.9	8:38	6:34
24	9.9	8:38	6:34
25	9.9	8:38	6:35
26	9.9	8:38	6:35
27	9.9	8:38	6:35
28	10.0	8:38	6:35
29	10.0	8:38	6:36
30	10.0	8:38	6:36

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 3.26 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.26 kWh/m² to a high of 8.04 kWh/m² in December across the year — June's 3.26 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	3.4	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.2	3.2	3.2	3.2	3.2	3.2	3.2	3.2	3.2	3.2	3.2	3.3	3.3	3.3	3.3	3.3	3.3
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	3.4	Moderate
2	3.3	Moderate
3	3.3	Moderate
4	3.3	Moderate
5	3.3	Moderate
6	3.3	Moderate
7	3.3	Moderate
8	3.3	Moderate
9	3.3	Moderate
10	3.3	Moderate
11	3.3	Moderate
12	3.3	Moderate
13	3.3	Moderate
14	3.2	Moderate
15	3.2	Moderate
16	3.2	Moderate
17	3.2	Moderate
18	3.2	Moderate
19	3.2	Moderate
20	3.2	Moderate
21	3.2	Moderate
22	3.2	Moderate
23	3.2	Moderate
24	3.2	Moderate
25	3.3	Moderate
26	3.3	Moderate
27	3.3	Moderate
28	3.3	Moderate
29	3.3	Moderate
30	3.3	Moderate

Planning a trip in June

Is June a good time to visit San Juan?

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

7.2

Sightseeing

6th-best month of the year

2.2

Beach & pool

11th-best month of the year

June is one of the better times to visit San Juan for general sightseeing.

What to pack for San Juan in June

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

In June, San Juan sees daytime highs around 18°C and nights near 3°C. Worth packing: a warm layer.

a warm layer

UV index in San Juan in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks 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 San Juan peaks around January 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).

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)	14	13	11	6	4	3	4	5	7	11	12	13
Level	Extreme	Extreme	Extreme	High	Moderate	Moderate	Moderate	Moderate	High	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	14	Extreme
Feb	13	Extreme
Mar	11	Extreme
Apr	6	High
May	4	Moderate
Jun	3	Moderate
Jul	4	Moderate
Aug	5	Moderate
Sep	7	High
Oct	11	Extreme
Nov	12	Extreme
Dec	13	Extreme

Location & terrain

Where is San Juan?

San Juan sits at 31.5°S, 68.5°W, 646 m above sea level, in Argentina. The nearest listed city is Santa Lucía, 3.0 km away.

Topography around San Juan

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

Within 3 km, the terrain around San Juan has only modest variations in elevation — a maximum elevation change of 55 m around an average of 636 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 744 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,836 m.

The land around San Juan is covered by artificial surfaces (87%) within 3 km, bare terrain (26%) and shrubs (25%) within 16 km, and shrubs (39%), bare terrain (36%) and grassland (21%) within 80 km.

3 km

55 m

artificial surfaces 87%

16 km

744 m

bare terrain 26%

80 km

3,836 m

shrubs 39%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwater

← May San Juan year-round climate July →Best places to visit in June

June weather nearby: Santa Lucía 3.0 km · Chimbas 5.0 km · Villa Paula de Sarmiento 5.0 km · Rawson 5.0 km · Villa General San Martín 11 km · Albardón 11 km · Pocito 17 km · Caucete 26 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 San Juan (-31.5373°, -68.5257°, elevation 646 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).

	Avg high (°C)	Avg low (°C)
1	19	5
2	19	5
3	18	4
4	18	4
5	18	4
6	18	4
7	18	4
8	18	4
9	18	4
10	18	4
11	18	4
12	18	3
13	18	3
14	18	3
15	18	3
16	17	3
17	17	3
18	17	3
19	17	3
20	17	3
21	17	3
22	17	3
23	17	3
24	17	3
25	17	3
26	17	3
27	17	3
28	17	3
29	17	2
30	17	2

	Clearer (%)	Cloudier (%)
1	76	24
2	76	24
3	76	24
4	76	24
5	77	23
6	77	23
7	77	23
8	77	23
9	77	23
10	76	24
11	76	24
12	76	24
13	76	24
14	75	25
15	75	25
16	75	25
17	75	25
18	75	25
19	76	24
20	76	24
21	76	24
22	77	23
23	77	23
24	77	23
25	77	23
26	78	22
27	78	22
28	79	21
29	79	21
30	79	21

	Rain chance (%)
1	7
2	7
3	7
4	6
5	6
6	6
7	6
8	6
9	6
10	7
11	7
12	7
13	7
14	7
15	8
16	8
17	8
18	8
19	8
20	8
21	8
22	8
23	8
24	8
25	7
26	7
27	7
28	7
29	7
30	7

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

	Avg high (°C)	Avg low (°C)
1	19	5
2	19	5
3	18	4
4	18	4
5	18	4
6	18	4
7	18	4
8	18	4
9	18	4
10	18	4
11	18	4
12	18	3
13	18	3
14	18	3
15	18	3
16	17	3
17	17	3
18	17	3
19	17	3
20	17	3
21	17	3
22	17	3
23	17	3
24	17	3
25	17	3
26	17	3
27	17	3
28	17	3
29	17	2
30	17	2

	Clearer (%)	Cloudier (%)
1	76	24
2	76	24
3	76	24
4	76	24
5	77	23
6	77	23
7	77	23
8	77	23
9	77	23
10	76	24
11	76	24
12	76	24
13	76	24
14	75	25
15	75	25
16	75	25
17	75	25
18	75	25
19	76	24
20	76	24
21	76	24
22	77	23
23	77	23
24	77	23
25	77	23
26	78	22
27	78	22
28	79	21
29	79	21
30	79	21

	Rain chance (%)
1	7
2	7
3	7
4	6
5	6
6	6
7	6
8	6
9	6
10	7
11	7
12	7
13	7
14	7
15	8
16	8
17	8
18	8
19	8
20	8
21	8
22	8
23	8
24	8
25	7
26	7
27	7
28	7
29	7
30	7

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

	Avg high (°C)	Avg low (°C)
1	19	5
2	19	5
3	18	4
4	18	4
5	18	4
6	18	4
7	18	4
8	18	4
9	18	4
10	18	4
11	18	4
12	18	3
13	18	3
14	18	3
15	18	3
16	17	3
17	17	3
18	17	3
19	17	3
20	17	3
21	17	3
22	17	3
23	17	3
24	17	3
25	17	3
26	17	3
27	17	3
28	17	3
29	17	2
30	17	2

	Clearer (%)	Cloudier (%)
1	76	24
2	76	24
3	76	24
4	76	24
5	77	23
6	77	23
7	77	23
8	77	23
9	77	23
10	76	24
11	76	24
12	76	24
13	76	24
14	75	25
15	75	25
16	75	25
17	75	25
18	75	25
19	76	24
20	76	24
21	76	24
22	77	23
23	77	23
24	77	23
25	77	23
26	78	22
27	78	22
28	79	21
29	79	21
30	79	21

	Rain chance (%)
1	7
2	7
3	7
4	6
5	6
6	6
7	6
8	6
9	6
10	7
11	7
12	7
13	7
14	7
15	8
16	8
17	8
18	8
19	8
20	8
21	8
22	8
23	8
24	8
25	7
26	7
27	7
28	7
29	7
30	7

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100