Puerto Aysén weather in September

In September, Puerto Aysén sees average daytime highs of 6°C and overnight lows near 0°C, with 264 mm of precipitation across 21.1 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 5°C in the first days to 7°C by the end. The sky is clear or mostly clear about 8% of the time in September, and the air most often feels dry.

Daylight stretches from about 10 h 54 min at the start of September to 12 h 24 min by month's end. Set against the rest of the year, September is Puerto Aysén's 8th-clearest and 8th-windiest month. For the whole year in context, see Puerto Aysén's year-round climate.

Daytime high: 6°; 9th warmest
Overnight low: 0°; 4th coldest
Precipitation: 264 mm; 21.1 wet days
Daylight: 11 h 42 min; 7:54 AM – 7:36 PM
Cloud cover: 82%; 8th clearest
Wind: 5 km/h; 8th windiest
Solar energy: 2.82 kWh/m²
Travel score: 0.4; out of 10

Puerto Aysén is place in Aysén, Aysén.

Density: 1,985/km²; people per km²

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

← August Puerto Aysén 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 7°C by the end.

A typical September day in Puerto Aysén reaches about 6°C in the afternoon and slips back to 0°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 9°C. Set against its neighbours, September runs about 2°C warmer than August and about 2°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	6	6	6	6	6	6	6	6	6	6	6	6	6	6	7	7	7	7	7	7	7	7	7	7	8	8	8
Avg low (°C)	-1	-1	-1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1

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

How September really feels in Puerto Aysén

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.

Puerto Aysén weather by month

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

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	15° / 7°	245	19.7	0.7	15.1	3.4
Feb	15° / 7°	185	15.3	0.4	13.9	3.8
Mar	13° / 6°	244	19	0.9	12.4	2.9
Apr	10° / 3°	292	19.5	4.4	10.8	1.7
May	7° / 1°	333	21.3	8.5	9.3	0.5
Jun	3° / -1°	364	21.7	16.3	8.6	0.0
Jul	3° / -2°	336	21.5	17.6	8.9	0.0
Aug	4° / -1°	366	22.9	18.9	10.1	0.0
Sep	6° / 0°	264	21.1	13.7	11.7	0.4
Oct	8° / 1°	302	21	10.7	13.3	1.1
Nov	11° / 3°	291	20.1	5.4	14.7	1.9
Dec	13° / 5°	290	21.4	2.3	15.4	2.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 7% of September, with mostly cloudy or overcast conditions the remaining 85%.

	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 (%)	15	15	15	15	16	16	16	15	15	15	14	13	13	13	13	13	13	13	14	14	14	14	15	16	16	16	17	17	18	18
Cloudier (%)	85	85	85	85	84	84	84	85	85	85	86	87	87	87	87	87	87	87	86	86	86	86	85	84	84	84	83	83	82	82

	Clearer (%)	Cloudier (%)
1	15	85
2	15	85
3	15	85
4	15	85
5	16	84
6	16	84
7	16	84
8	15	85
9	15	85
10	15	85
11	14	86
12	13	87
13	13	87
14	13	87
15	13	87
16	13	87
17	13	87
18	13	87
19	14	86
20	14	86
21	14	86
22	14	86
23	15	85
24	16	84
25	16	84
26	16	84
27	17	83
28	17	83
29	18	82
30	18	82

Chance of precipitation in September

Any precipitationSnow

Puerto Aysén gets around 264 mm of rain and snow over 21.1 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 71% and peaks near 74% on the wettest days, and about 14 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 (%)	74	74	74	74	73	73	73	73	73	73	73	73	73	72	72	72	71	70	70	69	69	68	68	67	67	66	66	66	66	66
Snow chance (%)	55	54	54	53	52	52	51	51	50	50	50	50	49	49	48	48	47	46	45	44	43	42	42	41	40	39	38	37	37	36

	Rain chance (%)	Snow chance (%)
1	74	55
2	74	54
3	74	54
4	74	53
5	73	52
6	73	52
7	73	51
8	73	51
9	73	50
10	73	50
11	73	50
12	73	50
13	73	49
14	72	49
15	72	48
16	72	48
17	71	47
18	70	46
19	70	45
20	69	44
21	69	43
22	68	42
23	68	42
24	67	41
25	67	40
26	66	39
27	66	38
28	66	37
29	66	37
30	66	36

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 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 5 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)	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5
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	5	calm
2	5	calm
3	5	calm
4	5	calm
5	5	calm
6	5	calm
7	5	calm
8	5	calm
9	5	calm
10	5	calm
11	5	calm
12	5	calm
13	5	calm
14	5	calm
15	5	calm
16	5	calm
17	5	calm
18	5	calm
19	5	calm
20	5	calm
21	5	calm
22	5	calm
23	5	calm
24	5	calm
25	5	calm
26	5	calm
27	5	calm
28	5	calm
29	5	calm
30	5	calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 10 h 54 min 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 90 minutes over September. Sunrise moves from 8:24 AM to 7:27 AM, and sunset from 7:17 PM to 7:54 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)	10.9	10.9	11.0	11.0	11.1	11.1	11.2	11.3	11.3	11.4	11.4	11.5	11.5	11.6	11.6	11.7	11.7	11.8	11.8	11.9	12.0	12.0	12.1	12.1	12.2	12.2	12.3	12.3	12.4	12.4
Sunrise (AM)	8:24	8:22	8:20	8:18	8:16	8:14	8:12	8:10	8:08	8:06	8:04	8:02	8:01	7:59	7:56	7:54	7:52	7:50	7:48	7:46	7:44	7:42	7:40	7:38	7:36	7:34	7:33	7:31	7:29	7:27
Sunset (PM)	7:17	7:18	7:19	7:21	7:22	7:23	7:24	7:26	7:27	7:28	7:29	7:31	7:32	7:33	7:34	7:36	7:37	7:38	7:39	7:41	7:42	7:43	7:45	7:46	7:47	7:48	7:50	7:51	7:52	7:54

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.9	8:24	7:17
2	10.9	8:22	7:18
3	11.0	8:20	7:19
4	11.0	8:18	7:21
5	11.1	8:16	7:22
6	11.1	8:14	7:23
7	11.2	8:12	7:24
8	11.3	8:10	7:26
9	11.3	8:08	7:27
10	11.4	8:06	7:28
11	11.4	8:04	7:29
12	11.5	8:02	7:31
13	11.5	8:01	7:32
14	11.6	7:59	7:33
15	11.6	7:56	7:34
16	11.7	7:54	7:36
17	11.7	7:52	7:37
18	11.8	7:50	7:38
19	11.8	7:48	7:39
20	11.9	7:46	7:41
21	12.0	7:44	7:42
22	12.0	7:42	7:43
23	12.1	7:40	7:45
24	12.1	7:38	7:46
25	12.2	7:36	7:47
26	12.2	7:34	7:48
27	12.3	7:33	7:50
28	12.3	7:31	7:51
29	12.4	7:29	7:52
30	12.4	7:27	7:54

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.82 kWh/m².

For context, solar energy here swings from a low near 0.89 kWh/m² to a high of 5 kWh/m² in December across the year — September's 2.82 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)	2.3	2.3	2.4	2.4	2.4	2.5	2.5	2.5	2.6	2.6	2.6	2.7	2.7	2.7	2.8	2.8	2.8	2.9	2.9	3.0	3.0	3.1	3.1	3.2	3.2	3.3	3.3	3.4	3.4	3.5
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	2.3	Moderate
2	2.3	Moderate
3	2.4	Moderate
4	2.4	Moderate
5	2.4	Moderate
6	2.5	Moderate
7	2.5	Moderate
8	2.5	Moderate
9	2.6	Moderate
10	2.6	Moderate
11	2.6	Moderate
12	2.7	Moderate
13	2.7	Moderate
14	2.7	Moderate
15	2.8	Moderate
16	2.8	Moderate
17	2.8	Moderate
18	2.9	Moderate
19	2.9	Moderate
20	3.0	Moderate
21	3.0	Moderate
22	3.1	Moderate
23	3.1	Moderate
24	3.2	Moderate
25	3.2	Moderate
26	3.3	Moderate
27	3.3	Moderate
28	3.4	Moderate
29	3.4	Moderate
30	3.5	Moderate

Planning a trip in September

Is September a good time to visit Puerto Aysén?

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

0.4

Sightseeing

9th-best month of the year

—

Beach & pool

never really warm enough

September is a weaker month for outdoor sightseeing in Puerto Aysén.

What to pack for Puerto Aysén in September

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

In September, Puerto Aysén sees daytime highs around 6°C and nights near 0°C. Pack a warm layer and rain gear. Worth having: a heavy coat. About 21 days see rain.

a warm layerrain geara heavy coat

UV index in Puerto Aysén in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Puerto Aysén peaks around January 12 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 1 (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)	11	10	6	4	2	1	2	2	4	7	8	11
Level	Extreme	Extreme	High	Moderate	Moderate	Low	Low	Moderate	Moderate	Very high	Very high	Extreme

	UV index (midday)	Level
Jan	11	Extreme
Feb	10	Extreme
Mar	6	High
Apr	4	Moderate
May	2	Moderate
Jun	1	Low
Jul	2	Low
Aug	2	Moderate
Sep	4	Moderate
Oct	7	Very high
Nov	8	Very high
Dec	11	Extreme

Location & terrain

Where is Puerto Aysén?

Puerto Aysén sits at 45.4°S, 72.7°W, 9 m above sea level, in Chile. The nearest listed city is Coyhaique, 52 km away.

Topography around Puerto Aysén

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

Within 3 km, the terrain around Puerto Aysén has large variations in elevation — a maximum elevation change of 892 m around an average of 47 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,610 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,254 m.

The land around Puerto Aysén is covered by trees (48%) and grassland (35%) within 3 km, trees (73%) within 16 km, and trees (61%) within 80 km.

3 km

892 m

trees 48%

16 km

1,610 m

trees 73%

80 km

2,254 m

trees 61%

treesgrasslandartificial surfacesbare terrainsnow and icewater

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

September weather nearby: Coyhaique 52 km · Quellón 265 km · Esquel 298 km · Las Heras 317 km · Castro 337 km · El Bolsón 394 km · Pico Truncado 397 km · Ancud 403 km

Chile travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type C / F / L; 220 V · 50 Hz
Prices: ≈ 48% of US; price level, 2025
GDP per capita: $17,995; 2025
Happiness: 6.3 / 10; World Happiness, 2025
Safe drinking water: 98%; of population, 2024
Homicide rate: 6.3; per 100k, 2023
Road deaths: 14.9; per 100k/yr, 2019
Income group: High; World Bank
English: Moderate; EF EPI 517
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 Puerto Aysén (-45.403°, -72.6918°, elevation 9 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	-1
2	5	-1
3	5	-1
4	6	0
5	6	0
6	6	0
7	6	0
8	6	0
9	6	0
10	6	0
11	6	0
12	6	0
13	6	0
14	6	0
15	6	0
16	6	0
17	6	0
18	7	0
19	7	0
20	7	0
21	7	0
22	7	0
23	7	0
24	7	0
25	7	0
26	7	0
27	7	0
28	8	0
29	8	0
30	8	1

	Clearer (%)	Cloudier (%)
1	15	85
2	15	85
3	15	85
4	15	85
5	16	84
6	16	84
7	16	84
8	15	85
9	15	85
10	15	85
11	14	86
12	13	87
13	13	87
14	13	87
15	13	87
16	13	87
17	13	87
18	13	87
19	14	86
20	14	86
21	14	86
22	14	86
23	15	85
24	16	84
25	16	84
26	16	84
27	17	83
28	17	83
29	18	82
30	18	82

	Rain chance (%)	Snow chance (%)
1	74	55
2	74	54
3	74	54
4	74	53
5	73	52
6	73	52
7	73	51
8	73	51
9	73	50
10	73	50
11	73	50
12	73	50
13	73	49
14	72	49
15	72	48
16	72	48
17	71	47
18	70	46
19	70	45
20	69	44
21	69	43
22	68	42
23	68	42
24	67	41
25	67	40
26	66	39
27	66	38
28	66	37
29	66	37
30	66	36

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

	Clearer (%)	Cloudier (%)
1	15	85
2	15	85
3	15	85
4	15	85
5	16	84
6	16	84
7	16	84
8	15	85
9	15	85
10	15	85
11	14	86
12	13	87
13	13	87
14	13	87
15	13	87
16	13	87
17	13	87
18	13	87
19	14	86
20	14	86
21	14	86
22	14	86
23	15	85
24	16	84
25	16	84
26	16	84
27	17	83
28	17	83
29	18	82
30	18	82

	Rain chance (%)	Snow chance (%)
1	74	55
2	74	54
3	74	54
4	74	53
5	73	52
6	73	52
7	73	51
8	73	51
9	73	50
10	73	50
11	73	50
12	73	50
13	73	49
14	72	49
15	72	48
16	72	48
17	71	47
18	70	46
19	70	45
20	69	44
21	69	43
22	68	42
23	68	42
24	67	41
25	67	40
26	66	39
27	66	38
28	66	37
29	66	37
30	66	36

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

	Clearer (%)	Cloudier (%)
1	15	85
2	15	85
3	15	85
4	15	85
5	16	84
6	16	84
7	16	84
8	15	85
9	15	85
10	15	85
11	14	86
12	13	87
13	13	87
14	13	87
15	13	87
16	13	87
17	13	87
18	13	87
19	14	86
20	14	86
21	14	86
22	14	86
23	15	85
24	16	84
25	16	84
26	16	84
27	17	83
28	17	83
29	18	82
30	18	82

	Rain chance (%)	Snow chance (%)
1	74	55
2	74	54
3	74	54
4	74	53
5	73	52
6	73	52
7	73	51
8	73	51
9	73	50
10	73	50
11	73	50
12	73	50
13	73	49
14	72	49
15	72	48
16	72	48
17	71	47
18	70	46
19	70	45
20	69	44
21	69	43
22	68	42
23	68	42
24	67	41
25	67	40
26	66	39
27	66	38
28	66	37
29	66	37
30	66	36

	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