Aguas Calientes weather in September

In September, Aguas Calientes sees average daytime highs of 13°C and overnight lows near 4°C, with 89 mm of rain across 26.1 wet days and about 11.9 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 13°C through the month. The sky is clear or mostly clear about 5% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Aguas Calientes's 5th-clearest and 2nd-windiest month. For the whole year in context, see Aguas Calientes's year-round climate.

Daytime high: 13°; 9th warmest
Overnight low: 4°; 4th coldest
Rainfall: 89 mm; 26.1 wet days
Daylight: 11 h 54 min; 5:47 AM – 5:42 PM
Cloud cover: 70%; 5th clearest
Wind: 3 km/h; 2nd windiest
Solar energy: 5.67 kWh/m²
Travel score: 2.2; out of 10

Aguas Calientes is town in Cusco, Peru.

Founded: 1901

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

← August Aguas Calientes 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

Day-to-day highs hold fairly steady near 13°C through the month.

A typical September day in Aguas Calientes reaches about 13°C in the afternoon and slips back to 4°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 15°C. Set against its neighbours, September runs on par with August and on par with 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)	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13
Avg low (°C)	3	3	3	3	3	3	3	3	3	3	3	3	3	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4

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

Aguas Calientes weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	14° / 6°	268	30.9	0.1	12.7	1.9
Feb	13° / 6°	246	27.9	0.1	12.4	1.9
Mar	14° / 6°	239	30.9	0	12.1	1.9
Apr	14° / 5°	142	28.1	0	11.7	2.2
May	13° / 4°	61	19.5	0	11.4	3.0
Jun	13° / 3°	37	13.2	0	11.2	3.3
Jul	12° / 2°	39	13.2	0.5	11.3	3.2
Aug	13° / 2°	57	19.3	0.4	11.6	2.8
Sep	13° / 4°	89	26.1	0	11.9	2.2
Oct	14° / 5°	149	30.3	0	12.3	2.1
Nov	14° / 6°	174	29.2	0.1	12.6	2.1
Dec	14° / 6°	240	30.7	0.1	12.8	2.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 25% of September, with mostly cloudy or overcast conditions the remaining 69%. Skies tend to cloud over 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 (%)	52	50	50	47	46	43	41	39	37	36	34	32	30	29	28	26	25	24	23	22	22	22	21	21	20	20	19	19	18	18
Cloudier (%)	48	50	50	53	54	57	59	61	63	64	66	68	70	71	72	74	75	76	77	78	78	78	79	79	80	80	81	81	82	82

	Clearer (%)	Cloudier (%)
1	52	48
2	50	50
3	50	50
4	47	53
5	46	54
6	43	57
7	41	59
8	39	61
9	37	63
10	36	64
11	34	66
12	32	68
13	30	70
14	29	71
15	28	72
16	26	74
17	25	75
18	24	76
19	23	77
20	22	78
21	22	78
22	22	78
23	21	79
24	21	79
25	20	80
26	20	80
27	19	81
28	19	81
29	18	82
30	18	82

Chance of precipitation in September

Any precipitation

Aguas Calientes gets around 89 mm of rain over 26.1 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 87% and peaks near 95% on the wettest days. The odds climb 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 (%)	77	78	78	79	79	80	81	82	83	84	85	85	86	87	88	89	90	90	91	91	92	92	92	92	93	93	93	94	94	95

	Rain chance (%)
1	77
2	78
3	78
4	79
5	79
6	80
7	81
8	82
9	83
10	84
11	85
12	85
13	86
14	87
15	88
16	89
17	90
18	90
19	91
20	91
21	92
22	92
23	92
24	92
25	93
26	93
27	93
28	94
29	94
30	95

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 3 km/h in September.

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 42 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over September. Sunrise moves from 5:58 AM to 5:36 AM, and sunset from 5:42 PM to 5:43 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)	11.7	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.1	12.1	12.1	12.1	12.1
Sunrise (AM)	5:58	5:57	5:56	5:55	5:55	5:54	5:53	5:53	5:52	5:51	5:50	5:50	5:49	5:48	5:47	5:47	5:46	5:45	5:44	5:44	5:43	5:42	5:41	5:41	5:40	5:39	5:38	5:38	5:37	5:36
Sunset (PM)	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:42	5:43

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.7	5:58	5:42
2	11.8	5:57	5:42
3	11.8	5:56	5:42
4	11.8	5:55	5:42
5	11.8	5:55	5:42
6	11.8	5:54	5:42
7	11.8	5:53	5:42
8	11.8	5:53	5:42
9	11.8	5:52	5:42
10	11.9	5:51	5:42
11	11.9	5:50	5:42
12	11.9	5:50	5:42
13	11.9	5:49	5:42
14	11.9	5:48	5:42
15	11.9	5:47	5:42
16	11.9	5:47	5:42
17	11.9	5:46	5:42
18	12.0	5:45	5:42
19	12.0	5:44	5:42
20	12.0	5:44	5:42
21	12.0	5:43	5:42
22	12.0	5:42	5:42
23	12.0	5:41	5:42
24	12.0	5:41	5:42
25	12.0	5:40	5:42
26	12.1	5:39	5:42
27	12.1	5:38	5:42
28	12.1	5:38	5:42
29	12.1	5:37	5:42
30	12.1	5:36	5:43

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.67 kWh/m².

For context, solar energy here swings from a low near 4.56 kWh/m² to a high of 5.71 kWh/m² in October across the year — September's 5.67 kWh/m² sits near the top of that range.

	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)	5.5	5.6	5.6	5.6	5.6	5.6	5.6	5.6	5.6	5.7	5.7	5.7	5.7	5.7	5.7	5.7	5.7	5.7	5.7	5.7	5.7	5.7	5.7	5.7	5.7	5.8	5.8	5.8	5.8	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	5.5	Bright
2	5.6	Bright
3	5.6	Bright
4	5.6	Bright
5	5.6	Bright
6	5.6	Bright
7	5.6	Bright
8	5.6	Bright
9	5.6	Bright
10	5.7	Bright
11	5.7	Bright
12	5.7	Bright
13	5.7	Bright
14	5.7	Bright
15	5.7	Bright
16	5.7	Bright
17	5.7	Bright
18	5.7	Bright
19	5.7	Bright
20	5.7	Bright
21	5.7	Bright
22	5.7	Bright
23	5.7	Bright
24	5.7	Bright
25	5.7	Bright
26	5.8	Bright
27	5.8	Bright
28	5.8	Bright
29	5.8	Bright
30	5.8	Bright

Planning a trip in September

Hazard calendar for Aguas Calientes

In seasonPeak

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

Aguas Calientes's rainy season runs October–April, 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 Aguas Calientes?

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

2.2

Sightseeing

5th-best month of the year

—

Beach & pool

never really warm enough

September is a weaker month for outdoor sightseeing in Aguas Calientes.

What to pack for Aguas Calientes in September

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

In September, Aguas Calientes sees daytime highs around 13°C and nights near 4°C. Pack rain gear. Worth having: a warm layer and sun protection. About 26 days see rain.

rain geara warm layersun protection

UV index in Aguas Calientes in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Aguas Calientes peaks around January 23 at about 18 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 9 at about 10 (very high).

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)	19	18	17	15	12	10	10	13	13	16	16	16
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	19	Extreme
Feb	18	Extreme
Mar	17	Extreme
Apr	15	Extreme
May	12	Extreme
Jun	10	Very high
Jul	10	Very high
Aug	13	Extreme
Sep	13	Extreme
Oct	16	Extreme
Nov	16	Extreme
Dec	16	Extreme

Air quality in Aguas Calientes 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 Aguas Calientes is worst in September — around 16 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (January, 6 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)	6	7	8	7	7	6	8	13	16	13	11	6
Level	Good	Good	Good	Good	Good	Good	Good	Moderate	Moderate	Moderate	Good	Good

	PM2.5 (µg/m³)	Level
Jan	6	Good
Feb	7	Good
Mar	8	Good
Apr	7	Good
May	7	Good
Jun	6	Good
Jul	8	Good
Aug	13	Moderate
Sep	16	Moderate
Oct	13	Moderate
Nov	11	Good
Dec	6	Good

Location & terrain

Where is Aguas Calientes?

Aguas Calientes sits at 13.2°S, 72.5°W, 0 m above sea level, in Peru. The nearest listed city is Machu Picchu, 0.0 km away.

Topography around Aguas Calientes

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

Within 3 km, the terrain around Aguas Calientes has very significant variations in elevation — a maximum elevation change of 2,013 m around an average of 2,604 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 4,049 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,623 m.

The land around Aguas Calientes is covered by trees (93%) within 3 km, trees (61%) and grassland (31%) within 16 km, and grassland (50%) and trees (44%) within 80 km.

3 km

2,013 m

trees 93%

16 km

4,049 m

trees 61%

80 km

5,623 m

grassland 50%

treesshrubsgrasslandcroplandbare terrainsnow and ice

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

September weather nearby: Machu Picchu 0.0 km · Quillabamba 37 km · Santa Ana 38 km · Abancay 66 km · Santiago 71 km · Wanchaq 73 km · Cusco 73 km · Andahuaylas 109 km

Peru travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type A / B / C; 220 V · 60 Hz
Prices: ≈ 51% of US; price level, 2025
GDP per capita: $9,684; 2025
Happiness: 6.0 / 10; World Happiness, 2025
Safe drinking water: 49%; of population, 2024
Homicide rate: 8.6; per 100k, 2021
Road deaths: 13.6; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: Moderate; EF EPI 519
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 Aguas Calientes (-13.1552°, -72.5226°, 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. 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	13	3
2	13	3
3	13	3
4	13	3
5	13	3
6	13	3
7	13	3
8	13	3
9	13	3
10	13	3
11	13	3
12	13	3
13	13	3
14	13	4
15	13	4
16	13	4
17	13	4
18	13	4
19	13	4
20	13	4
21	13	4
22	13	4
23	13	4
24	13	4
25	13	4
26	13	4
27	13	4
28	13	4
29	13	4
30	13	4

	Clearer (%)	Cloudier (%)
1	52	48
2	50	50
3	50	50
4	47	53
5	46	54
6	43	57
7	41	59
8	39	61
9	37	63
10	36	64
11	34	66
12	32	68
13	30	70
14	29	71
15	28	72
16	26	74
17	25	75
18	24	76
19	23	77
20	22	78
21	22	78
22	22	78
23	21	79
24	21	79
25	20	80
26	20	80
27	19	81
28	19	81
29	18	82
30	18	82

	Rain chance (%)
1	77
2	78
3	78
4	79
5	79
6	80
7	81
8	82
9	83
10	84
11	85
12	85
13	86
14	87
15	88
16	89
17	90
18	90
19	91
20	91
21	92
22	92
23	92
24	92
25	93
26	93
27	93
28	94
29	94
30	95

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

	Clearer (%)	Cloudier (%)
1	52	48
2	50	50
3	50	50
4	47	53
5	46	54
6	43	57
7	41	59
8	39	61
9	37	63
10	36	64
11	34	66
12	32	68
13	30	70
14	29	71
15	28	72
16	26	74
17	25	75
18	24	76
19	23	77
20	22	78
21	22	78
22	22	78
23	21	79
24	21	79
25	20	80
26	20	80
27	19	81
28	19	81
29	18	82
30	18	82

	Rain chance (%)
1	77
2	78
3	78
4	79
5	79
6	80
7	81
8	82
9	83
10	84
11	85
12	85
13	86
14	87
15	88
16	89
17	90
18	90
19	91
20	91
21	92
22	92
23	92
24	92
25	93
26	93
27	93
28	94
29	94
30	95

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

	Clearer (%)	Cloudier (%)
1	52	48
2	50	50
3	50	50
4	47	53
5	46	54
6	43	57
7	41	59
8	39	61
9	37	63
10	36	64
11	34	66
12	32	68
13	30	70
14	29	71
15	28	72
16	26	74
17	25	75
18	24	76
19	23	77
20	22	78
21	22	78
22	22	78
23	21	79
24	21	79
25	20	80
26	20	80
27	19	81
28	19	81
29	18	82
30	18	82

	Rain chance (%)
1	77
2	78
3	78
4	79
5	79
6	80
7	81
8	82
9	83
10	84
11	85
12	85
13	86
14	87
15	88
16	89
17	90
18	90
19	91
20	91
21	92
22	92
23	92
24	92
25	93
26	93
27	93
28	94
29	94
30	95

	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