Tenango de Arista weather in September

In September, Tenango de Arista sees average daytime highs of 22°C and overnight lows near 12°C, with 357 mm of rain across 27.5 wet days and about 12.1 hours of daylight. It is the 9th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 5% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 12 h 24 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Tenango de Arista's 12th-clearest and 9th-windiest month. For the whole year in context, see Tenango de Arista's year-round climate.

Daytime high: 22°; 9th warmest
Overnight low: 12°; 11th coldest
Rainfall: 357 mm; 27.5 wet days
Daylight: 12 h 06 min; 6:29 AM – 6:36 PM
Cloud cover: 80%; 12th clearest
Wind: 5 km/h; 9th windiest
Solar energy: 5.18 kWh/m²
Travel score: 3.8; out of 10

Tenango de Arista is municipal seat of Tenango del Valle, State of México, Mexico.

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

← August Tenango de Arista 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 22°C through the month.

A typical September day in Tenango de Arista reaches about 22°C in the afternoon and slips back to 12°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 24°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)	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22
Avg low (°C)	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12

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

Tenango de Arista weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 2nd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	20° / 6°	17	2.9	11	7.8
Feb	22° / 7°	20	3.7	11.4	8.2
Mar	24° / 9°	27	5.6	11.9	8.1
Apr	25° / 10°	54	8.7	12.4	7.2
May	25° / 11°	205	19.9	12.9	5.5
Jun	23° / 12°	364	26.6	13.1	4.0
Jul	22° / 12°	306	28.7	13	3.8
Aug	22° / 12°	346	29.1	12.6	3.7
Sep	22° / 12°	357	27.5	12.1	3.8
Oct	22° / 11°	161	19.5	11.6	5.2
Nov	22° / 8°	43	8	11.1	7.2
Dec	21° / 6°	11	2.6	10.9	7.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 84%.

	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 (%)	14	14	14	14	14	14	14	14	14	14	14	15	16	16	16	16	16	16	16	17	17	17	17	17	19	20	20	21	22	23
Cloudier (%)	86	86	86	86	86	86	86	86	86	86	86	85	84	84	84	84	84	84	84	83	83	83	83	83	81	80	80	79	78	77

	Clearer (%)	Cloudier (%)
1	14	86
2	14	86
3	14	86
4	14	86
5	14	86
6	14	86
7	14	86
8	14	86
9	14	86
10	14	86
11	14	86
12	15	85
13	16	84
14	16	84
15	16	84
16	16	84
17	16	84
18	16	84
19	16	84
20	17	83
21	17	83
22	17	83
23	17	83
24	17	83
25	19	81
26	20	80
27	20	80
28	21	79
29	22	78
30	23	77

Chance of precipitation in September

Any precipitation

Tenango de Arista gets around 357 mm of rain over 27.5 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 91% and peaks near 97% 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 (%)	97	96	96	96	96	95	95	94	94	94	93	93	93	92	92	91	91	90	90	90	89	89	88	87	86	86	85	84	83	82

	Rain chance (%)
1	97
2	96
3	96
4	96
5	96
6	95
7	95
8	94
9	94
10	94
11	93
12	93
13	93
14	92
15	92
16	91
17	91
18	90
19	90
20	90
21	89
22	89
23	88
24	87
25	86
26	86
27	85
28	84
29	83
30	82

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 58% 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 (%)	38	38	38	38	38	38	38	39	39	39	40	40	40	40	41	41	40	40	41	41	41	42	43	44	46	47	49	50	52	53
Comfortable (%)	62	62	62	62	62	62	62	61	61	61	60	60	60	60	59	59	60	60	59	59	59	58	57	56	54	53	51	50	48	47

	Dry (%)	Comfortable (%)
1	38	62
2	38	62
3	38	62
4	38	62
5	38	62
6	38	62
7	38	62
8	39	61
9	39	61
10	39	61
11	40	60
12	40	60
13	40	60
14	40	60
15	41	59
16	41	59
17	40	60
18	40	60
19	41	59
20	41	59
21	41	59
22	42	58
23	43	57
24	44	56
25	46	54
26	47	53
27	49	51
28	50	50
29	52	48
30	53	47

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 4 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)	4	4	4	4	4	4	4	4	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	4	calm
2	4	calm
3	4	calm
4	4	calm
5	4	calm
6	4	calm
7	4	calm
8	4	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 12 h 24 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over September. Sunrise moves from 6:27 AM to 6:32 AM, and sunset from 6:50 PM to 6:23 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)	12.4	12.4	12.3	12.3	12.3	12.3	12.3	12.3	12.2	12.2	12.2	12.2	12.2	12.1	12.1	12.1	12.1	12.1	12.1	12.0	12.0	12.0	12.0	12.0	11.9	11.9	11.9	11.9	11.9	11.8
Sunrise (AM)	6:27	6:27	6:27	6:27	6:27	6:28	6:28	6:28	6:28	6:28	6:29	6:29	6:29	6:29	6:29	6:29	6:30	6:30	6:30	6:30	6:30	6:31	6:31	6:31	6:31	6:31	6:32	6:32	6:32	6:32
Sunset (PM)	6:50	6:49	6:48	6:47	6:46	6:45	6:44	6:43	6:42	6:41	6:41	6:40	6:39	6:38	6:37	6:36	6:35	6:34	6:33	6:32	6:31	6:30	6:29	6:28	6:28	6:27	6:26	6:25	6:24	6:23

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.4	6:27	6:50
2	12.4	6:27	6:49
3	12.3	6:27	6:48
4	12.3	6:27	6:47
5	12.3	6:27	6:46
6	12.3	6:28	6:45
7	12.3	6:28	6:44
8	12.3	6:28	6:43
9	12.2	6:28	6:42
10	12.2	6:28	6:41
11	12.2	6:29	6:41
12	12.2	6:29	6:40
13	12.2	6:29	6:39
14	12.1	6:29	6:38
15	12.1	6:29	6:37
16	12.1	6:29	6:36
17	12.1	6:30	6:35
18	12.1	6:30	6:34
19	12.1	6:30	6:33
20	12.0	6:30	6:32
21	12.0	6:30	6:31
22	12.0	6:31	6:30
23	12.0	6:31	6:29
24	12.0	6:31	6:28
25	11.9	6:31	6:28
26	11.9	6:31	6:27
27	11.9	6:32	6:26
28	11.9	6:32	6:25
29	11.9	6:32	6:24
30	11.8	6:32	6:23

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.18 kWh/m².

For context, solar energy here swings from a low near 4.99 kWh/m² to a high of 7.23 kWh/m² in April across the year — September's 5.18 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)	5.4	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.1	5.1	5.1	5.1	5.1
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	5.4	Bright
2	5.3	Bright
3	5.3	Bright
4	5.3	Bright
5	5.3	Bright
6	5.3	Bright
7	5.3	Bright
8	5.3	Bright
9	5.3	Bright
10	5.3	Bright
11	5.3	Bright
12	5.3	Bright
13	5.2	Bright
14	5.2	Bright
15	5.2	Bright
16	5.2	Bright
17	5.2	Bright
18	5.2	Bright
19	5.2	Bright
20	5.2	Bright
21	5.2	Bright
22	5.2	Bright
23	5.2	Bright
24	5.2	Bright
25	5.2	Bright
26	5.1	Bright
27	5.1	Bright
28	5.1	Bright
29	5.1	Bright
30	5.1	Bright

Planning a trip in September

Hazard calendar for Tenango de Arista

In seasonPeak

In September, Tenango de Arista sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Tenango de Arista's monsoon runs May–September, when most of the year's rain falls.

Monsoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Tenango de Arista?

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

3.8

Sightseeing

10th-best month of the year

2.6

Beach & pool

12th-best month of the year

September is a weaker month for outdoor sightseeing in Tenango de Arista.

What to pack for Tenango de Arista in September

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

In September, Tenango de Arista sees daytime highs around 22°C and nights near 12°C. Pack rain gear. Worth having: sun protection. About 28 days see rain.

rain gearsun protection

UV index in Tenango de Arista in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tenango de Arista peaks around March 23 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 8 (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)	10	12	15	14	12	15	12	13	11	11	9	8
Level	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	10	Very high
Feb	12	Extreme
Mar	15	Extreme
Apr	14	Extreme
May	12	Extreme
Jun	15	Extreme
Jul	12	Extreme
Aug	13	Extreme
Sep	11	Extreme
Oct	11	Extreme
Nov	9	Very high
Dec	8	Very high

Air quality in Tenango de Arista 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 Tenango de Arista is worst in November — around 50 µg/m³ PM2.5 (poor), about 2.1× the cleanest month (March, 24 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)	38	30	24	30	42	33	34	36	43	49	50	47
Level	Poor	Moderate	Moderate	Moderate	Poor	Moderate	Moderate	Poor	Poor	Poor	Poor	Poor

	PM2.5 (µg/m³)	Level
Jan	38	Poor
Feb	30	Moderate
Mar	24	Moderate
Apr	30	Moderate
May	42	Poor
Jun	33	Moderate
Jul	34	Moderate
Aug	36	Poor
Sep	43	Poor
Oct	49	Poor
Nov	50	Poor
Dec	47	Poor

Location & terrain

Where is Tenango de Arista?

Tenango de Arista sits at 19.1°N, 99.6°W, 2,610 m above sea level, in Mexico. The nearest listed city is Santiago Tlacotepec, 16 km away.

Topography around Tenango de Arista

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

Within 3 km, the terrain around Tenango de Arista has significant variations in elevation — a maximum elevation change of 448 m around an average of 2,661 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,341 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,973 m.

The land around Tenango de Arista is covered by cropland (46%) and trees (23%) within 3 km, trees (41%) and cropland (34%) within 16 km, and trees (46%) within 80 km.

3 km

448 m

cropland 46%

16 km

2,341 m

trees 41%

80 km

3,973 m

trees 46%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwater

← August Tenango de Arista year-round climate October →Best places to visit in September

September weather nearby: Santiago Tlacotepec 16 km · Capulhuac de Mirafuentes 16 km · San Jorge Pueblo Nuevo 17 km · Metepec 17 km · San Salvador Tizatlalli 17 km · San Francisco Cuaxusco 18 km · San Mateo Atenco 19 km · San Jerónimo 20 km

Mexico travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type A / B; 120 / 127 V · 60 Hz
Prices: ≈ 54% of US; price level, 2025
GDP per capita: $13,889; 2025
Happiness: 7.0 / 10; World Happiness, 2025
Safe drinking water: 43%; of population, 2024
Homicide rate: 24.9; per 100k, 2023
Road deaths: 12.8; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: Very low; EF EPI 440
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 Tenango de Arista (19.1045°, -99.5898°, elevation 2,610 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	22	12
2	22	12
3	22	12
4	22	12
5	22	12
6	22	12
7	22	12
8	22	12
9	22	12
10	22	12
11	22	12
12	22	12
13	22	12
14	22	12
15	22	12
16	22	12
17	22	12
18	22	12
19	22	12
20	22	12
21	22	12
22	22	12
23	22	12
24	22	12
25	22	12
26	22	12
27	22	12
28	22	12
29	22	12
30	22	12

	Clearer (%)	Cloudier (%)
1	14	86
2	14	86
3	14	86
4	14	86
5	14	86
6	14	86
7	14	86
8	14	86
9	14	86
10	14	86
11	14	86
12	15	85
13	16	84
14	16	84
15	16	84
16	16	84
17	16	84
18	16	84
19	16	84
20	17	83
21	17	83
22	17	83
23	17	83
24	17	83
25	19	81
26	20	80
27	20	80
28	21	79
29	22	78
30	23	77

	Rain chance (%)
1	97
2	96
3	96
4	96
5	96
6	95
7	95
8	94
9	94
10	94
11	93
12	93
13	93
14	92
15	92
16	91
17	91
18	90
19	90
20	90
21	89
22	89
23	88
24	87
25	86
26	86
27	85
28	84
29	83
30	82

	Dry (%)	Comfortable (%)
1	38	62
2	38	62
3	38	62
4	38	62
5	38	62
6	38	62
7	38	62
8	39	61
9	39	61
10	39	61
11	40	60
12	40	60
13	40	60
14	40	60
15	41	59
16	41	59
17	40	60
18	40	60
19	41	59
20	41	59
21	41	59
22	42	58
23	43	57
24	44	56
25	46	54
26	47	53
27	49	51
28	50	50
29	52	48
30	53	47

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

	Clearer (%)	Cloudier (%)
1	14	86
2	14	86
3	14	86
4	14	86
5	14	86
6	14	86
7	14	86
8	14	86
9	14	86
10	14	86
11	14	86
12	15	85
13	16	84
14	16	84
15	16	84
16	16	84
17	16	84
18	16	84
19	16	84
20	17	83
21	17	83
22	17	83
23	17	83
24	17	83
25	19	81
26	20	80
27	20	80
28	21	79
29	22	78
30	23	77

	Rain chance (%)
1	97
2	96
3	96
4	96
5	96
6	95
7	95
8	94
9	94
10	94
11	93
12	93
13	93
14	92
15	92
16	91
17	91
18	90
19	90
20	90
21	89
22	89
23	88
24	87
25	86
26	86
27	85
28	84
29	83
30	82

	Dry (%)	Comfortable (%)
1	38	62
2	38	62
3	38	62
4	38	62
5	38	62
6	38	62
7	38	62
8	39	61
9	39	61
10	39	61
11	40	60
12	40	60
13	40	60
14	40	60
15	41	59
16	41	59
17	40	60
18	40	60
19	41	59
20	41	59
21	41	59
22	42	58
23	43	57
24	44	56
25	46	54
26	47	53
27	49	51
28	50	50
29	52	48
30	53	47

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

	Clearer (%)	Cloudier (%)
1	14	86
2	14	86
3	14	86
4	14	86
5	14	86
6	14	86
7	14	86
8	14	86
9	14	86
10	14	86
11	14	86
12	15	85
13	16	84
14	16	84
15	16	84
16	16	84
17	16	84
18	16	84
19	16	84
20	17	83
21	17	83
22	17	83
23	17	83
24	17	83
25	19	81
26	20	80
27	20	80
28	21	79
29	22	78
30	23	77

	Rain chance (%)
1	97
2	96
3	96
4	96
5	96
6	95
7	95
8	94
9	94
10	94
11	93
12	93
13	93
14	92
15	92
16	91
17	91
18	90
19	90
20	90
21	89
22	89
23	88
24	87
25	86
26	86
27	85
28	84
29	83
30	82

	Dry (%)	Comfortable (%)
1	38	62
2	38	62
3	38	62
4	38	62
5	38	62
6	38	62
7	38	62
8	39	61
9	39	61
10	39	61
11	40	60
12	40	60
13	40	60
14	40	60
15	41	59
16	41	59
17	40	60
18	40	60
19	41	59
20	41	59
21	41	59
22	42	58
23	43	57
24	44	56
25	46	54
26	47	53
27	49	51
28	50	50
29	52	48
30	53	47