Pichilemu weather in September

In September, Pichilemu sees average daytime highs of 16°C and overnight lows near 8°C, with 36 mm of rain across 3.6 wet days and about 11.8 hours of daylight. It is the 9th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 15°C in the first days to 17°C by the end. The sky is clear or mostly clear about 43% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 12 min at the start of September to 12 h 18 min by month's end. Set against the rest of the year, September is Pichilemu's 8th-clearest and 6th-windiest month. For the whole year in context, see Pichilemu's year-round climate.

Daytime high: 16°; 9th warmest
Overnight low: 8°; 4th coldest
Rainfall: 36 mm; 3.6 wet days
Daylight: 11 h 48 min; 7:49 AM – 7:36 PM
Cloud cover: 50%; 8th clearest
Wind: 11 km/h; 6th windiest
Solar energy: 5.02 kWh/m²
Travel score: 6.0; out of 10

Pichilemu is city in Chile.

Density: 1,382/km²; people per km²
Founded: 1544

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

← August Pichilemu 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 15°C in the first days to 17°C by the end.

A typical September day in Pichilemu reaches about 16°C in the afternoon and slips back to 8°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 19°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)	15	15	16	16	16	16	16	16	16	16	16	16	16	16	16	16	16	17	17	17	17	17	17	17	17	17	17	17	17	17
Avg low (°C)	7	7	7	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

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

Pichilemu weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 5th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	25° / 13°	1	0.2	14	9.5
Feb	24° / 13°	2	0.4	13.3	9.4
Mar	23° / 12°	5	0.8	12.3	9.1
Apr	20° / 10°	19	2.3	11.2	7.7
May	16° / 9°	68	5.3	10.2	5.7
Jun	14° / 7°	133	8.5	9.7	4.2
Jul	13° / 6°	87	7.5	9.9	4.1
Aug	15° / 7°	72	6.3	10.7	4.7
Sep	16° / 8°	36	3.6	11.8	6.0
Oct	19° / 9°	21	2.7	12.9	7.3
Nov	21° / 11°	6	1	13.8	8.5
Dec	23° / 12°	3	0.5	14.3	9.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 43%.

	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 (%)	52	53	53	54	55	55	56	57	58	58	59	59	59	59	58	58	58	58	58	58	57	57	57	57	56	56	56	57	57	57
Cloudier (%)	48	47	47	46	45	45	44	43	42	42	41	41	41	41	42	42	42	42	42	42	43	43	43	43	44	44	44	43	43	43

	Clearer (%)	Cloudier (%)
1	52	48
2	53	47
3	53	47
4	54	46
5	55	45
6	55	45
7	56	44
8	57	43
9	58	42
10	58	42
11	59	41
12	59	41
13	59	41
14	59	41
15	58	42
16	58	42
17	58	42
18	58	42
19	58	42
20	58	42
21	57	43
22	57	43
23	57	43
24	57	43
25	56	44
26	56	44
27	56	44
28	57	43
29	57	43
30	57	43

Chance of precipitation in September

Any precipitation

Pichilemu gets around 36 mm of rain over 3.6 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 13% and peaks near 19% on the wettest days. 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 (%)	19	19	18	18	17	16	16	15	15	14	14	13	13	12	11	11	10	10	10	9	9	9	9	9	9	10	10	10	10	11

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

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 99% 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 (%)	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	100	100	100	100	100	100	100	100	100	100	100	100	100
Comfortable (%)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0

Wind in September

Winds average 11 km/h in September.

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 12 min at the start of September to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over September. Sunrise moves from 8:10 AM to 7:28 AM, and sunset from 7:25 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)	11.2	11.3	11.3	11.4	11.4	11.4	11.5	11.5	11.5	11.6	11.6	11.6	11.7	11.7	11.8	11.8	11.8	11.9	11.9	11.9	12.0	12.0	12.0	12.1	12.1	12.2	12.2	12.2	12.3	12.3
Sunrise (AM)	8:10	8:09	8:08	8:06	8:05	8:03	8:02	8:00	7:59	7:57	7:56	7:55	7:53	7:52	7:50	7:49	7:47	7:46	7:44	7:43	7:41	7:40	7:38	7:37	7:35	7:34	7:33	7:31	7:30	7:28
Sunset (PM)	7:25	7:26	7:27	7:27	7:28	7:29	7:29	7:30	7:31	7:32	7:32	7:33	7:34	7:35	7:35	7:36	7:37	7:37	7:38	7:39	7:40	7:40	7:41	7:42	7:43	7:43	7:44	7:45	7:46	7:46

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.2	8:10	7:25
2	11.3	8:09	7:26
3	11.3	8:08	7:27
4	11.4	8:06	7:27
5	11.4	8:05	7:28
6	11.4	8:03	7:29
7	11.5	8:02	7:29
8	11.5	8:00	7:30
9	11.5	7:59	7:31
10	11.6	7:57	7:32
11	11.6	7:56	7:32
12	11.6	7:55	7:33
13	11.7	7:53	7:34
14	11.7	7:52	7:35
15	11.8	7:50	7:35
16	11.8	7:49	7:36
17	11.8	7:47	7:37
18	11.9	7:46	7:37
19	11.9	7:44	7:38
20	11.9	7:43	7:39
21	12.0	7:41	7:40
22	12.0	7:40	7:40
23	12.0	7:38	7:41
24	12.1	7:37	7:42
25	12.1	7:35	7:43
26	12.2	7:34	7:43
27	12.2	7:33	7:44
28	12.2	7:31	7:45
29	12.3	7:30	7:46
30	12.3	7:28	7:46

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.02 kWh/m².

For context, solar energy here swings from a low near 2.21 kWh/m² to a high of 8.82 kWh/m² in December across the year — September's 5.02 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)	4.2	4.3	4.3	4.4	4.4	4.5	4.5	4.6	4.7	4.7	4.8	4.8	4.9	5.0	5.0	5.1	5.1	5.2	5.2	5.3	5.3	5.4	5.4	5.5	5.5	5.6	5.6	5.7	5.7	5.8
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	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	4.2	Bright
2	4.3	Bright
3	4.3	Bright
4	4.4	Bright
5	4.4	Bright
6	4.5	Bright
7	4.5	Bright
8	4.6	Bright
9	4.7	Bright
10	4.7	Bright
11	4.8	Bright
12	4.8	Bright
13	4.9	Bright
14	5.0	Bright
15	5.0	Bright
16	5.1	Bright
17	5.1	Bright
18	5.2	Bright
19	5.2	Bright
20	5.3	Bright
21	5.3	Bright
22	5.4	Bright
23	5.4	Bright
24	5.5	Bright
25	5.5	Bright
26	5.6	Bright
27	5.6	Bright
28	5.7	Bright
29	5.7	Bright
30	5.8	Bright

Planning a trip in September

Is September a good time to visit Pichilemu?

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

6.0

Sightseeing

8th-best month of the year

1.0

Beach & pool

9th-best month of the year

September is a reasonable time to visit Pichilemu for sightseeing.

What to pack for Pichilemu in September

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

In September, Pichilemu sees daytime highs around 16°C and nights near 8°C. Worth packing: a warm layer and sun protection. About 4 days see rain.

a warm layersun protection

Sea temperature near Pichilemu in September

The nearest coast averages about 13°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in February at about 16°C and coldest in August near 13°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	16	16	16	15	14	14	13	13	13	13	14	15
Comfort	Cool	Cool	Cool	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Cool

	Sea temperature (°C)	Comfort
Jan	16	Cool
Feb	16	Cool
Mar	16	Cool
Apr	15	Bracing
May	14	Bracing
Jun	14	Bracing
Jul	13	Bracing
Aug	13	Bracing
Sep	13	Bracing
Oct	13	Bracing
Nov	14	Bracing
Dec	15	Cool

UV index in Pichilemu in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Pichilemu peaks around January 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 16 at about 3 (moderate).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	13	12	10	5	3	3	3	4	6	9	11	12
Level	Extreme	Extreme	Very high	High	Moderate	Moderate	Moderate	Moderate	High	Very high	Extreme	Extreme

	UV index (midday)	Level
Jan	13	Extreme
Feb	12	Extreme
Mar	10	Very high
Apr	5	High
May	3	Moderate
Jun	3	Moderate
Jul	3	Moderate
Aug	4	Moderate
Sep	6	High
Oct	9	Very high
Nov	11	Extreme
Dec	12	Extreme

Air quality in Pichilemu in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Pichilemu is worst in January — around 25 µg/m³ PM2.5 (moderate), about 5.7× the cleanest month (March, 4 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	25	12	4	7	10	10	6	6	7	5	5	8
Level	Moderate	Good	Good	Good	Good	Good	Good	Good	Good	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	25	Moderate
Feb	12	Good
Mar	4	Good
Apr	7	Good
May	10	Good
Jun	10	Good
Jul	6	Good
Aug	6	Good
Sep	7	Good
Oct	5	Good
Nov	5	Good
Dec	8	Good

Location & terrain

Where is Pichilemu?

Pichilemu sits at 34.4°S, 72.0°W, 0 m above sea level, in Chile. The nearest listed city is Santa Cruz, 65 km away.

Topography around Pichilemu

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

Within 3 km, the terrain around Pichilemu has only modest variations in elevation — a maximum elevation change of 131 m around an average of 19 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 609 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,305 m.

The land around Pichilemu is covered by water (43%) and trees (23%) within 3 km, water (49%) and trees (35%) within 16 km, and water (33%), grassland (26%) and trees (25%) within 80 km.

3 km

131 m

water 43%

16 km

609 m

water 49%

80 km

1,305 m

water 33%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwater

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

September weather nearby: Santa Cruz 65 km · San Vicente 84 km · San Vicente de Tagua Tagua 85 km · Sagrada Familia 89 km · San Antonio 95 km · Chimbarongo 95 km · Curicó 96 km · Cartagena 99 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 Pichilemu (-34.3833°, -72°, elevation 0 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. 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	15	7
2	15	7
3	16	7
4	16	8
5	16	8
6	16	8
7	16	8
8	16	8
9	16	8
10	16	8
11	16	8
12	16	8
13	16	8
14	16	8
15	16	8
16	16	8
17	16	8
18	17	8
19	17	8
20	17	8
21	17	8
22	17	8
23	17	8
24	17	8
25	17	8
26	17	8
27	17	8
28	17	8
29	17	9
30	17	9

	Clearer (%)	Cloudier (%)
1	52	48
2	53	47
3	53	47
4	54	46
5	55	45
6	55	45
7	56	44
8	57	43
9	58	42
10	58	42
11	59	41
12	59	41
13	59	41
14	59	41
15	58	42
16	58	42
17	58	42
18	58	42
19	58	42
20	58	42
21	57	43
22	57	43
23	57	43
24	57	43
25	56	44
26	56	44
27	56	44
28	57	43
29	57	43
30	57	43

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

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0

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

	Clearer (%)	Cloudier (%)
1	52	48
2	53	47
3	53	47
4	54	46
5	55	45
6	55	45
7	56	44
8	57	43
9	58	42
10	58	42
11	59	41
12	59	41
13	59	41
14	59	41
15	58	42
16	58	42
17	58	42
18	58	42
19	58	42
20	58	42
21	57	43
22	57	43
23	57	43
24	57	43
25	56	44
26	56	44
27	56	44
28	57	43
29	57	43
30	57	43

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

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0

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

	Clearer (%)	Cloudier (%)
1	52	48
2	53	47
3	53	47
4	54	46
5	55	45
6	55	45
7	56	44
8	57	43
9	58	42
10	58	42
11	59	41
12	59	41
13	59	41
14	59	41
15	58	42
16	58	42
17	58	42
18	58	42
19	58	42
20	58	42
21	57	43
22	57	43
23	57	43
24	57	43
25	56	44
26	56	44
27	56	44
28	57	43
29	57	43
30	57	43

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

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0