Santiago Tulantepec weather in September

In September, Santiago Tulantepec sees average daytime highs of 20°C and overnight lows near 12°C, with 260 mm of rain across 25.7 wet days and about 12.1 hours of daylight. It is the 7th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 20°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 Santiago Tulantepec's 12th-clearest and 8th-windiest month. For the whole year in context, see Santiago Tulantepec's year-round climate.

Daytime high: 20°; 7th warmest
Overnight low: 12°; 11th coldest
Rainfall: 260 mm; 25.7 wet days
Daylight: 12 h 06 min; 6:24 AM – 6:31 PM
Cloud cover: 80%; 12th clearest
Wind: 6 km/h; 8th windiest
Solar energy: 4.87 kWh/m²
Travel score: 3.8; out of 10

Santiago Tulantepec is human settlement in Mexico.

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

← August Santiago Tulantepec 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 20°C through the month.

A typical September day in Santiago Tulantepec reaches about 20°C in the afternoon and slips back to 12°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 22°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)	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	19	19	19
Avg low (°C)	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	11	11	11	11	11	11	11	11	11

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

Santiago Tulantepec weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 1st-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	17° / 5°	42	9.6	10.9	5.5
Feb	19° / 6°	42	9.6	11.3	6.1
Mar	20° / 8°	63	14.6	11.9	5.9
Apr	22° / 10°	100	18.8	12.4	5.3
May	22° / 11°	111	20.3	12.9	5.2
Jun	21° / 12°	227	23.2	13.2	4.4
Jul	20° / 11°	220	28.1	13.1	3.7
Aug	20° / 12°	223	27.5	12.7	3.8
Sep	20° / 12°	260	25.7	12.1	3.8
Oct	19° / 10°	185	19	11.5	4.8
Nov	18° / 7°	82	13	11.1	5.4
Dec	17° / 6°	35	9.1	10.8	5.7

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 83%.

	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 (%)	17	16	17	16	16	15	15	15	15	15	16	15	15	16	16	16	17	17	17	17	18	18	18	19	20	20	20	20	21	21
Cloudier (%)	83	84	83	84	84	85	85	85	85	85	84	85	85	84	84	84	83	83	83	83	82	82	82	81	80	80	80	80	79	79

	Clearer (%)	Cloudier (%)
1	17	83
2	16	84
3	17	83
4	16	84
5	16	84
6	15	85
7	15	85
8	15	85
9	15	85
10	15	85
11	16	84
12	15	85
13	15	85
14	16	84
15	16	84
16	16	84
17	17	83
18	17	83
19	17	83
20	17	83
21	18	82
22	18	82
23	18	82
24	19	81
25	20	80
26	20	80
27	20	80
28	20	80
29	21	79
30	21	79

Chance of precipitation in September

Any precipitation

Santiago Tulantepec gets around 260 mm of rain over 25.7 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 85% and peaks near 90% 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 (%)	90	90	90	90	89	89	89	89	89	89	89	88	88	87	87	87	86	85	85	84	83	82	81	80	79	77	76	76	75	74

	Rain chance (%)
1	90
2	90
3	90
4	90
5	89
6	89
7	89
8	89
9	89
10	89
11	89
12	88
13	88
14	87
15	87
16	87
17	86
18	85
19	85
20	84
21	83
22	82
23	81
24	80
25	79
26	77
27	76
28	76
29	75
30	74

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 51% 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 (%)	43	43	42	42	42	42	42	42	42	43	43	44	44	45	46	46	47	48	49	50	52	53	55	57	59	60	62	63	64	65
Comfortable (%)	57	57	58	58	58	58	58	58	58	57	57	56	56	55	54	54	53	52	51	50	48	47	45	43	41	40	38	37	36	35

	Dry (%)	Comfortable (%)
1	43	57
2	43	57
3	42	58
4	42	58
5	42	58
6	42	58
7	42	58
8	42	58
9	42	58
10	43	57
11	43	57
12	44	56
13	44	56
14	45	55
15	46	54
16	46	54
17	47	53
18	48	52
19	49	51
20	50	50
21	52	48
22	53	47
23	55	45
24	57	43
25	59	41
26	60	40
27	62	38
28	63	37
29	64	36
30	65	35

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 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)	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6
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	6	calm
2	6	calm
3	6	calm
4	6	calm
5	6	calm
6	6	calm
7	6	calm
8	6	calm
9	6	calm
10	6	calm
11	6	calm
12	6	calm
13	6	calm
14	6	calm
15	6	calm
16	6	calm
17	6	calm
18	6	calm
19	6	calm
20	6	calm
21	6	calm
22	6	calm
23	6	calm
24	6	calm
25	6	calm
26	6	calm
27	6	calm
28	6	calm
29	6	calm
30	6	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 6:21 AM to 6:28 AM, and sunset from 6:45 PM to 6:18 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	12.4	12.3	12.3	12.3	12.3	12.3	12.2	12.2	12.2	12.2	12.2	12.2	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)	6:21	6:21	6:22	6:22	6:22	6:22	6:22	6:23	6:23	6:23	6:23	6:24	6:24	6:24	6:24	6:24	6:25	6:25	6:25	6:25	6:25	6:26	6:26	6:26	6:26	6:27	6:27	6:27	6:27	6:28
Sunset (PM)	6:45	6:44	6:43	6:42	6:42	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	6:27	6:26	6:25	6:24	6:23	6:23	6:22	6:21	6:20	6:19	6:18

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

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.87 kWh/m².

For context, solar energy here swings from a low near 4.3 kWh/m² to a high of 6.57 kWh/m² in May across the year — September's 4.87 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)	5.2	5.2	5.2	5.1	5.1	5.1	5.1	5.0	5.0	5.0	5.0	5.0	5.0	4.9	4.9	4.9	4.9	4.9	4.9	4.8	4.8	4.8	4.8	4.8	4.8	4.7	4.7	4.7	4.7	4.7
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	5.2	Bright
2	5.2	Bright
3	5.2	Bright
4	5.1	Bright
5	5.1	Bright
6	5.1	Bright
7	5.1	Bright
8	5.0	Bright
9	5.0	Bright
10	5.0	Bright
11	5.0	Bright
12	5.0	Bright
13	5.0	Bright
14	4.9	Bright
15	4.9	Bright
16	4.9	Bright
17	4.9	Bright
18	4.9	Bright
19	4.9	Bright
20	4.8	Bright
21	4.8	Bright
22	4.8	Bright
23	4.8	Bright
24	4.8	Bright
25	4.8	Bright
26	4.7	Bright
27	4.7	Bright
28	4.7	Bright
29	4.7	Bright
30	4.7	Bright

Planning a trip in September

Hazard calendar for Santiago Tulantepec

In seasonPeak

In September, Santiago Tulantepec sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Santiago Tulantepec's rainy season runs June–October, 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 Santiago Tulantepec?

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

2.0

Beach & pool

9th-best month of the year

September is a weaker month for outdoor sightseeing in Santiago Tulantepec.

What to pack for Santiago Tulantepec in September

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

In September, Santiago Tulantepec sees daytime highs around 20°C and nights near 12°C. Pack rain gear. Worth having: sun protection. About 26 days see rain.

rain gearsun protection

UV index in Santiago Tulantepec 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 Santiago Tulantepec peaks around June 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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)	9	11	13	14	11	14	13	14	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	9	Very high
Feb	11	Extreme
Mar	13	Extreme
Apr	14	Extreme
May	11	Extreme
Jun	14	Extreme
Jul	13	Extreme
Aug	14	Extreme
Sep	11	Extreme
Oct	11	Extreme
Nov	9	Very high
Dec	8	Very high

Air quality in Santiago Tulantepec 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 Santiago Tulantepec is worst in December — around 95 µg/m³ PM2.5 (unhealthy), about 2.0× the cleanest month (September, 49 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)	88	89	85	90	85	59	56	52	49	52	70	95
Level	Unhealthy	Unhealthy	Unhealthy	Unhealthy	Unhealthy	Unhealthy	Unhealthy	Poor	Poor	Poor	Unhealthy	Unhealthy

	PM2.5 (µg/m³)	Level
Jan	88	Unhealthy
Feb	89	Unhealthy
Mar	85	Unhealthy
Apr	90	Unhealthy
May	85	Unhealthy
Jun	59	Unhealthy
Jul	56	Unhealthy
Aug	52	Poor
Sep	49	Poor
Oct	52	Poor
Nov	70	Unhealthy
Dec	95	Unhealthy

Location & terrain

Where is Santiago Tulantepec?

Santiago Tulantepec sits at 20.0°N, 98.4°W, 2,196 m above sea level, in Mexico. The nearest listed city is Cuautepec de Hinojosa, 5.0 km away.

Topography around Santiago Tulantepec

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

Within 3 km, the terrain around Santiago Tulantepec has significant variations in elevation — a maximum elevation change of 308 m around an average of 2,226 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 939 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,004 m.

The land around Santiago Tulantepec is covered by cropland (31%) and grassland (26%) within 3 km, cropland (38%) and trees (30%) within 16 km, and trees (46%) and cropland (23%) within 80 km.

3 km

308 m

cropland 31%

16 km

939 m

cropland 38%

80 km

4,004 m

trees 46%

treesshrubsgrasslandcroplandartificial surfaces

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

September weather nearby: Cuautepec de Hinojosa 5.0 km · Tulancingo 5.0 km · Tepeapulco 34 km · Huauchinango 35 km · Ciudad Sahagun 37 km · Apan 37 km · La Providencia Siglo XXI 38 km · Chignahuapan 40 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 Santiago Tulantepec (20.0362°, -98.3556°, elevation 2,196 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	20	12
2	20	12
3	20	12
4	20	12
5	20	12
6	20	12
7	20	12
8	20	12
9	20	12
10	20	12
11	20	12
12	20	12
13	20	12
14	20	12
15	20	12
16	20	12
17	20	12
18	20	12
19	20	12
20	20	12
21	20	12
22	20	11
23	20	11
24	20	11
25	20	11
26	20	11
27	20	11
28	19	11
29	19	11
30	19	11

	Clearer (%)	Cloudier (%)
1	17	83
2	16	84
3	17	83
4	16	84
5	16	84
6	15	85
7	15	85
8	15	85
9	15	85
10	15	85
11	16	84
12	15	85
13	15	85
14	16	84
15	16	84
16	16	84
17	17	83
18	17	83
19	17	83
20	17	83
21	18	82
22	18	82
23	18	82
24	19	81
25	20	80
26	20	80
27	20	80
28	20	80
29	21	79
30	21	79

	Rain chance (%)
1	90
2	90
3	90
4	90
5	89
6	89
7	89
8	89
9	89
10	89
11	89
12	88
13	88
14	87
15	87
16	87
17	86
18	85
19	85
20	84
21	83
22	82
23	81
24	80
25	79
26	77
27	76
28	76
29	75
30	74

	Dry (%)	Comfortable (%)
1	43	57
2	43	57
3	42	58
4	42	58
5	42	58
6	42	58
7	42	58
8	42	58
9	42	58
10	43	57
11	43	57
12	44	56
13	44	56
14	45	55
15	46	54
16	46	54
17	47	53
18	48	52
19	49	51
20	50	50
21	52	48
22	53	47
23	55	45
24	57	43
25	59	41
26	60	40
27	62	38
28	63	37
29	64	36
30	65	35

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

	Clearer (%)	Cloudier (%)
1	17	83
2	16	84
3	17	83
4	16	84
5	16	84
6	15	85
7	15	85
8	15	85
9	15	85
10	15	85
11	16	84
12	15	85
13	15	85
14	16	84
15	16	84
16	16	84
17	17	83
18	17	83
19	17	83
20	17	83
21	18	82
22	18	82
23	18	82
24	19	81
25	20	80
26	20	80
27	20	80
28	20	80
29	21	79
30	21	79

	Rain chance (%)
1	90
2	90
3	90
4	90
5	89
6	89
7	89
8	89
9	89
10	89
11	89
12	88
13	88
14	87
15	87
16	87
17	86
18	85
19	85
20	84
21	83
22	82
23	81
24	80
25	79
26	77
27	76
28	76
29	75
30	74

	Dry (%)	Comfortable (%)
1	43	57
2	43	57
3	42	58
4	42	58
5	42	58
6	42	58
7	42	58
8	42	58
9	42	58
10	43	57
11	43	57
12	44	56
13	44	56
14	45	55
15	46	54
16	46	54
17	47	53
18	48	52
19	49	51
20	50	50
21	52	48
22	53	47
23	55	45
24	57	43
25	59	41
26	60	40
27	62	38
28	63	37
29	64	36
30	65	35

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

	Clearer (%)	Cloudier (%)
1	17	83
2	16	84
3	17	83
4	16	84
5	16	84
6	15	85
7	15	85
8	15	85
9	15	85
10	15	85
11	16	84
12	15	85
13	15	85
14	16	84
15	16	84
16	16	84
17	17	83
18	17	83
19	17	83
20	17	83
21	18	82
22	18	82
23	18	82
24	19	81
25	20	80
26	20	80
27	20	80
28	20	80
29	21	79
30	21	79

	Rain chance (%)
1	90
2	90
3	90
4	90
5	89
6	89
7	89
8	89
9	89
10	89
11	89
12	88
13	88
14	87
15	87
16	87
17	86
18	85
19	85
20	84
21	83
22	82
23	81
24	80
25	79
26	77
27	76
28	76
29	75
30	74

	Dry (%)	Comfortable (%)
1	43	57
2	43	57
3	42	58
4	42	58
5	42	58
6	42	58
7	42	58
8	42	58
9	42	58
10	43	57
11	43	57
12	44	56
13	44	56
14	45	55
15	46	54
16	46	54
17	47	53
18	48	52
19	49	51
20	50	50
21	52	48
22	53	47
23	55	45
24	57	43
25	59	41
26	60	40
27	62	38
28	63	37
29	64	36
30	65	35