Bariloche weather in September

In September, Bariloche sees average daytime highs of 7°C and overnight lows near -1°C, with 68 mm of precipitation across 10.3 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 5°C in the first days to 8°C by the end. The sky is clear or mostly clear about 21% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 hours at the start of September to 12 h 24 min by month's end. Set against the rest of the year, September is Bariloche's 8th-clearest and 9th-windiest month. For the whole year in context, see Bariloche's year-round climate.

Daytime high: 7°; 9th warmest
Overnight low: -1°; 4th coldest
Precipitation: 68 mm; 10.3 wet days
Daylight: 11 h 42 min; 7:48 AM – 7:31 PM
Cloud cover: 65%; 8th clearest
Wind: 8 km/h; 9th windiest
Solar energy: 4.35 kWh/m²
Travel score: 0.7; out of 10

Bariloche is city in the province of Río Negro in Argentina.

Density: 433/km²; people per km²
Founded: 1902

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

← August Bariloche year-round climate October →Best places to visit in September

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 5°C in the first days to 8°C by the end.

A typical September day in Bariloche reaches about 7°C in the afternoon and slips back to -1°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 3°C and 11°C. Set against its neighbours, September runs about 3°C warmer than August and about 3°C cooler than October.

	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)	5	5	5	5	5	6	6	6	6	6	6	6	6	6	7	7	7	7	7	7	7	7	8	8	8	8	8	8	8	8
Avg low (°C)	-2	-2	-2	-2	-2	-2	-2	-2	-2	-2	-2	-2	-2	-2	-1	-1	-1	-1	-1	-1	-1	-1	-1	-1	-1	-1	0	0	0	0

	Avg high (°C)	Avg low (°C)
1	5	-2
2	5	-2
3	5	-2
4	5	-2
5	5	-2
6	6	-2
7	6	-2
8	6	-2
9	6	-2
10	6	-2
11	6	-2
12	6	-2
13	6	-2
14	6	-2
15	7	-1
16	7	-1
17	7	-1
18	7	-1
19	7	-1
20	7	-1
21	7	-1
22	7	-1
23	8	-1
24	8	-1
25	8	-1
26	8	-1
27	8	0
28	8	0
29	8	0
30	8	0

How September really feels in Bariloche

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 30 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 September is cold — wind chill drags the overnight "feels like" below the raw low.

Bariloche weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 7th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	19° / 7°	31	5.2	0.4	14.6	7.2
Feb	19° / 7°	33	5	0.2	13.6	7.2
Mar	16° / 5°	41	7	0.5	12.3	5.7
Apr	11° / 2°	74	8.7	2.6	10.9	2.9
May	7° / 0°	119	13	6.2	9.7	0.8
Jun	4° / -2°	172	16	13.3	9.1	0.0
Jul	3° / -3°	140	14.5	13.7	9.3	0.0
Aug	4° / -3°	131	14.5	12.8	10.4	0.0
Sep	7° / -1°	68	10.3	7.8	11.7	0.7
Oct	10° / 0°	70	10.2	5.9	13.1	2.2
Nov	13° / 2°	52	8.3	2.6	14.3	4.0
Dec	17° / 5°	47	6.8	1.1	14.9	6.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 63%.

	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 (%)	31	32	33	34	35	35	36	37	37	37	37	37	37	37	38	39	39	39	39	39	40	39	39	39	39	39	38	38	38	38
Cloudier (%)	69	68	67	66	65	65	64	63	63	63	63	63	63	63	62	61	61	61	61	61	60	61	61	61	61	61	62	62	62	62

	Clearer (%)	Cloudier (%)
1	31	69
2	32	68
3	33	67
4	34	66
5	35	65
6	35	65
7	36	64
8	37	63
9	37	63
10	37	63
11	37	63
12	37	63
13	37	63
14	37	63
15	38	62
16	39	61
17	39	61
18	39	61
19	39	61
20	39	61
21	40	60
22	39	61
23	39	61
24	39	61
25	39	61
26	39	61
27	38	62
28	38	62
29	38	62
30	38	62

Chance of precipitation in September

Any precipitationSnow

Bariloche gets around 68 mm of rain and snow over 10.3 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 35% and peaks near 43% on the wettest days, and about 8 days bring snow. The odds ease toward the end of the month.

	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 (%)	43	42	41	40	39	38	38	37	37	36	36	36	35	35	34	34	34	33	33	33	32	32	32	32	32	32	32	32	32	32
Snow chance (%)	35	35	34	34	33	32	32	32	31	31	31	30	30	29	28	27	26	25	25	24	23	22	21	20	20	19	19	18	18	18

	Rain chance (%)	Snow chance (%)
1	43	35
2	42	35
3	41	34
4	40	34
5	39	33
6	38	32
7	38	32
8	37	32
9	37	31
10	36	31
11	36	31
12	36	30
13	35	30
14	35	29
15	34	28
16	34	27
17	34	26
18	33	25
19	33	25
20	33	24
21	32	23
22	32	22
23	32	21
24	32	20
25	32	20
26	32	19
27	32	19
28	32	18
29	32	18
30	32	18

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September 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 September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 9 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	9	9
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	9	calm
30	9	calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 hours at the start of September to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 84 minutes over September. Sunrise moves from 8:14 AM to 7:23 AM, and sunset from 7:16 PM to 7:46 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)	11.0	11.1	11.1	11.2	11.2	11.3	11.3	11.4	11.4	11.4	11.5	11.5	11.6	11.6	11.7	11.7	11.8	11.8	11.9	11.9	12.0	12.0	12.1	12.1	12.2	12.2	12.2	12.3	12.3	12.4
Sunrise (AM)	8:14	8:12	8:10	8:09	8:07	8:05	8:04	8:02	8:00	7:58	7:57	7:55	7:53	7:51	7:49	7:48	7:46	7:44	7:42	7:41	7:39	7:37	7:35	7:33	7:32	7:30	7:28	7:26	7:25	7:23
Sunset (PM)	7:16	7:17	7:18	7:19	7:20	7:21	7:22	7:23	7:24	7:25	7:26	7:27	7:28	7:29	7:30	7:31	7:32	7:34	7:35	7:36	7:37	7:38	7:39	7:40	7:41	7:42	7:43	7:44	7:45	7:46

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.0	8:14	7:16
2	11.1	8:12	7:17
3	11.1	8:10	7:18
4	11.2	8:09	7:19
5	11.2	8:07	7:20
6	11.3	8:05	7:21
7	11.3	8:04	7:22
8	11.4	8:02	7:23
9	11.4	8:00	7:24
10	11.4	7:58	7:25
11	11.5	7:57	7:26
12	11.5	7:55	7:27
13	11.6	7:53	7:28
14	11.6	7:51	7:29
15	11.7	7:49	7:30
16	11.7	7:48	7:31
17	11.8	7:46	7:32
18	11.8	7:44	7:34
19	11.9	7:42	7:35
20	11.9	7:41	7:36
21	12.0	7:39	7:37
22	12.0	7:37	7:38
23	12.1	7:35	7:39
24	12.1	7:33	7:40
25	12.2	7:32	7:41
26	12.2	7:30	7:42
27	12.2	7:28	7:43
28	12.3	7:26	7:44
29	12.3	7:25	7:45
30	12.4	7:23	7:46

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.35 kWh/m².

For context, solar energy here swings from a low near 1.54 kWh/m² to a high of 7.97 kWh/m² in December across the year — September's 4.35 kWh/m² falls in the middle.

	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)	3.5	3.6	3.6	3.7	3.8	3.8	3.9	3.9	4.0	4.0	4.1	4.1	4.2	4.3	4.3	4.4	4.4	4.5	4.5	4.6	4.6	4.7	4.7	4.8	4.8	4.9	4.9	5.0	5.0	5.1
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	3.5	Moderate
2	3.6	Moderate
3	3.6	Moderate
4	3.7	Moderate
5	3.8	Moderate
6	3.8	Moderate
7	3.9	Moderate
8	3.9	Moderate
9	4.0	Moderate
10	4.0	Bright
11	4.1	Bright
12	4.1	Bright
13	4.2	Bright
14	4.3	Bright
15	4.3	Bright
16	4.4	Bright
17	4.4	Bright
18	4.5	Bright
19	4.5	Bright
20	4.6	Bright
21	4.6	Bright
22	4.7	Bright
23	4.7	Bright
24	4.8	Bright
25	4.8	Bright
26	4.9	Bright
27	4.9	Bright
28	5.0	Bright
29	5.0	Bright
30	5.1	Bright

Planning a trip in September

Hazard calendar for Bariloche

In seasonPeak

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

Bariloche's rainy season runs May–August, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Bariloche?

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

0.7

Sightseeing

9th-best month of the year

0.0

Beach & pool

7th-best month of the year

September is a weaker month for outdoor sightseeing in Bariloche.

What to pack for Bariloche in September

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

In September, Bariloche sees daytime highs around 7°C and nights near -1°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

UV index in Bariloche in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bariloche peaks around December 20 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	12	12	8	5	3	2	2	3	5	8	10	13
Level	Extreme	Extreme	Very high	Moderate	Moderate	Low	Moderate	Moderate	High	Very high	Very high	Extreme

	UV index (midday)	Level
Jan	12	Extreme
Feb	12	Extreme
Mar	8	Very high
Apr	5	Moderate
May	3	Moderate
Jun	2	Low
Jul	2	Moderate
Aug	3	Moderate
Sep	5	High
Oct	8	Very high
Nov	10	Very high
Dec	13	Extreme

Location & terrain

Where is Bariloche?

Bariloche sits at 41.1°S, 71.3°W, 839 m above sea level, in Argentina. The nearest listed city is El Bolsón, 93 km away.

Topography around Bariloche

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

Within 3 km, the terrain around Bariloche has significant variations in elevation — a maximum elevation change of 427 m around an average of 865 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,452 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,290 m.

The land around Bariloche is covered by artificial surfaces (40%) and trees (23%) within 3 km, grassland (36%), trees (30%) and water (22%) within 16 km, and grassland (44%) and trees (37%) within 80 km.

3 km

427 m

artificial surfaces 40%

16 km

1,452 m

grassland 36%

80 km

3,290 m

grassland 44%

treesshrubsgrasslandartificial surfacesbare terrainwater

← August Bariloche year-round climate October →Best places to visit in September

September weather nearby: El Bolsón 93 km · San Martín de los Andes 110 km · Puerto Montt 141 km · Puerto Varas 142 km · Llanquihue 143 km · Frutillar 147 km · Purranque 157 km · Río Bueno 165 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 Bariloche (-41.1456°, -71.3082°, elevation 839 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	5	-2
2	5	-2
3	5	-2
4	5	-2
5	5	-2
6	6	-2
7	6	-2
8	6	-2
9	6	-2
10	6	-2
11	6	-2
12	6	-2
13	6	-2
14	6	-2
15	7	-1
16	7	-1
17	7	-1
18	7	-1
19	7	-1
20	7	-1
21	7	-1
22	7	-1
23	8	-1
24	8	-1
25	8	-1
26	8	-1
27	8	0
28	8	0
29	8	0
30	8	0

	Clearer (%)	Cloudier (%)
1	31	69
2	32	68
3	33	67
4	34	66
5	35	65
6	35	65
7	36	64
8	37	63
9	37	63
10	37	63
11	37	63
12	37	63
13	37	63
14	37	63
15	38	62
16	39	61
17	39	61
18	39	61
19	39	61
20	39	61
21	40	60
22	39	61
23	39	61
24	39	61
25	39	61
26	39	61
27	38	62
28	38	62
29	38	62
30	38	62

	Rain chance (%)	Snow chance (%)
1	43	35
2	42	35
3	41	34
4	40	34
5	39	33
6	38	32
7	38	32
8	37	32
9	37	31
10	36	31
11	36	31
12	36	30
13	35	30
14	35	29
15	34	28
16	34	27
17	34	26
18	33	25
19	33	25
20	33	24
21	32	23
22	32	22
23	32	21
24	32	20
25	32	20
26	32	19
27	32	19
28	32	18
29	32	18
30	32	18

	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	5	-2
2	5	-2
3	5	-2
4	5	-2
5	5	-2
6	6	-2
7	6	-2
8	6	-2
9	6	-2
10	6	-2
11	6	-2
12	6	-2
13	6	-2
14	6	-2
15	7	-1
16	7	-1
17	7	-1
18	7	-1
19	7	-1
20	7	-1
21	7	-1
22	7	-1
23	8	-1
24	8	-1
25	8	-1
26	8	-1
27	8	0
28	8	0
29	8	0
30	8	0

	Clearer (%)	Cloudier (%)
1	31	69
2	32	68
3	33	67
4	34	66
5	35	65
6	35	65
7	36	64
8	37	63
9	37	63
10	37	63
11	37	63
12	37	63
13	37	63
14	37	63
15	38	62
16	39	61
17	39	61
18	39	61
19	39	61
20	39	61
21	40	60
22	39	61
23	39	61
24	39	61
25	39	61
26	39	61
27	38	62
28	38	62
29	38	62
30	38	62

	Rain chance (%)	Snow chance (%)
1	43	35
2	42	35
3	41	34
4	40	34
5	39	33
6	38	32
7	38	32
8	37	32
9	37	31
10	36	31
11	36	31
12	36	30
13	35	30
14	35	29
15	34	28
16	34	27
17	34	26
18	33	25
19	33	25
20	33	24
21	32	23
22	32	22
23	32	21
24	32	20
25	32	20
26	32	19
27	32	19
28	32	18
29	32	18
30	32	18

	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	5	-2
2	5	-2
3	5	-2
4	5	-2
5	5	-2
6	6	-2
7	6	-2
8	6	-2
9	6	-2
10	6	-2
11	6	-2
12	6	-2
13	6	-2
14	6	-2
15	7	-1
16	7	-1
17	7	-1
18	7	-1
19	7	-1
20	7	-1
21	7	-1
22	7	-1
23	8	-1
24	8	-1
25	8	-1
26	8	-1
27	8	0
28	8	0
29	8	0
30	8	0

	Clearer (%)	Cloudier (%)
1	31	69
2	32	68
3	33	67
4	34	66
5	35	65
6	35	65
7	36	64
8	37	63
9	37	63
10	37	63
11	37	63
12	37	63
13	37	63
14	37	63
15	38	62
16	39	61
17	39	61
18	39	61
19	39	61
20	39	61
21	40	60
22	39	61
23	39	61
24	39	61
25	39	61
26	39	61
27	38	62
28	38	62
29	38	62
30	38	62

	Rain chance (%)	Snow chance (%)
1	43	35
2	42	35
3	41	34
4	40	34
5	39	33
6	38	32
7	38	32
8	37	32
9	37	31
10	36	31
11	36	31
12	36	30
13	35	30
14	35	29
15	34	28
16	34	27
17	34	26
18	33	25
19	33	25
20	33	24
21	32	23
22	32	22
23	32	21
24	32	20
25	32	20
26	32	19
27	32	19
28	32	18
29	32	18
30	32	18

	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