San Pedro weather in September

In September, San Pedro sees average daytime highs of 33°C and overnight lows near 21°C, with 28 mm of rain across 5.1 wet days and about 12.2 hours of daylight. It is the 6th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 58% of the time in September, and the air most often feels humid.

Daylight stretches from about 12 h 30 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is San Pedro's 12th-clearest and 4th-windiest month. For the whole year in context, see San Pedro's year-round climate.

Daytime high: 33°; 6th warmest
Overnight low: 21°; 8th coldest
Rainfall: 28 mm; 5.1 wet days
Daylight: 12 h 06 min; 6:42 AM – 6:51 PM
Cloud cover: 40%; 12th clearest
Wind: 13 km/h; 4th windiest
Solar energy: 6.12 kWh/m²
Travel score: 4.3; out of 10

San Pedro is municipal seat of San Pedro, State of Coahuila, Mexico.

Density: 3,047/km²; people per km²
Founded: 1870

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

← August San Pedro 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 33°C through the month.

A typical September day in San Pedro reaches about 33°C in the afternoon and slips back to 21°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 36°C. Set against its neighbours, September runs about 2°C cooler than August and about 2°C warmer 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)	34	33	33	33	33	33	33	33	33	33	33	33	33	33	33	33	33	32	32	32	32	32	32	32	32	32	32	32	32	32
Avg low (°C)	22	22	22	22	22	22	22	22	22	22	22	22	22	21	21	21	21	21	21	21	21	21	21	20	20	20	20	20	20	20

	Avg high (°C)	Avg low (°C)
1	34	22
2	33	22
3	33	22
4	33	22
5	33	22
6	33	22
7	33	22
8	33	22
9	33	22
10	33	22
11	33	22
12	33	22
13	33	22
14	33	21
15	33	21
16	33	21
17	33	21
18	32	21
19	32	21
20	32	21
21	32	21
22	32	21
23	32	21
24	32	20
25	32	20
26	32	20
27	32	20
28	32	20
29	32	20
30	32	20

How September really feels in San Pedro

Once humidity and wind are folded in, September averages 27 days that feel above 32°C and 0 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 heat — humidity pushes the afternoon "feels like" well above the raw temperature.

San Pedro weather by month

How September compares with the rest of the year at a glance. September is the 6th-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	22° / 9°	9	1.5	10.6	8.4
Feb	26° / 11°	5	1	11.1	8.5
Mar	29° / 14°	8	1.4	11.8	7.1
Apr	33° / 18°	3	0.9	12.6	4.7
May	36° / 21°	7	1.9	13.2	2.9
Jun	36° / 23°	14	3	13.6	2.4
Jul	35° / 24°	24	4.4	13.4	2.9
Aug	35° / 23°	18	3.3	12.9	3.2
Sep	33° / 21°	28	5.1	12.2	4.3
Oct	30° / 18°	15	2.2	11.4	6.2
Nov	26° / 13°	9	1.6	10.7	8.6
Dec	22° / 9°	7	1.5	10.4	8.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 58% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to open up 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 (%)	73	73	72	72	72	71	71	71	71	71	70	70	70	71	70	70	70	70	71	71	72	72	73	74	75	76	78	78	80	80
Cloudier (%)	27	27	28	28	28	29	29	29	29	29	30	30	30	29	30	30	30	30	29	29	28	28	27	26	25	24	22	22	20	20

	Clearer (%)	Cloudier (%)
1	73	27
2	73	27
3	72	28
4	72	28
5	72	28
6	71	29
7	71	29
8	71	29
9	71	29
10	71	29
11	70	30
12	70	30
13	70	30
14	71	29
15	70	30
16	70	30
17	70	30
18	70	30
19	71	29
20	71	29
21	72	28
22	72	28
23	73	27
24	74	26
25	75	25
26	76	24
27	78	22
28	78	22
29	80	20
30	80	20

Chance of precipitation in September

Any precipitation

San Pedro gets around 28 mm of rain over 5.1 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 16% 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 (%)	16	17	17	18	18	18	19	19	19	19	19	19	18	18	18	18	18	17	17	17	16	15	14	14	13	12	11	10	9	9

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

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 34% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

	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 (%)	17	17	17	17	17	17	17	17	17	17	18	18	18	19	20	20	21	23	24	26	28	30	33	35	37	39	41	43	44	46
Comfortable (%)	37	36	35	34	34	33	33	33	33	33	33	34	34	34	35	35	35	34	34	33	33	32	31	31	30	29	29	29	28	28
Humid (%)	36	37	38	38	39	40	40	40	40	40	40	39	39	38	38	37	36	35	34	33	32	30	29	28	27	25	24	23	23	22
Muggy (%)	10	10	10	10	10	10	10	10	10	10	9	9	9	9	8	8	8	8	8	8	7	7	7	7	7	6	6	5	5	4

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	17	37	36	10
2	17	36	37	10
3	17	35	38	10
4	17	34	38	10
5	17	34	39	10
6	17	33	40	10
7	17	33	40	10
8	17	33	40	10
9	17	33	40	10
10	17	33	40	10
11	18	33	40	9
12	18	34	39	9
13	18	34	39	9
14	19	34	38	9
15	20	35	38	8
16	20	35	37	8
17	21	35	36	8
18	23	34	35	8
19	24	34	34	8
20	26	33	33	8
21	28	33	32	7
22	30	32	30	7
23	33	31	29	7
24	35	31	28	7
25	37	30	27	7
26	39	29	25	6
27	41	29	24	6
28	43	29	23	5
29	44	28	23	5
30	46	28	22	4

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 14 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)	14	14	14	14	14	14	14	14	14	14	14	14	14	14	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (km/h)	Feels
1	14	light breeze
2	14	light breeze
3	14	light breeze
4	14	light breeze
5	14	light breeze
6	14	light breeze
7	14	light breeze
8	14	light breeze
9	14	light breeze
10	14	light breeze
11	14	light breeze
12	14	light breeze
13	14	light breeze
14	14	light breeze
15	13	light breeze
16	13	light breeze
17	13	light breeze
18	13	light breeze
19	13	light breeze
20	13	light breeze
21	13	light breeze
22	13	light breeze
23	13	light breeze
24	13	light breeze
25	13	light breeze
26	13	light breeze
27	13	light breeze
28	13	light breeze
29	13	light breeze
30	13	light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 30 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 42 minutes over September. Sunrise moves from 6:36 AM to 6:48 AM, and sunset from 7:08 PM to 6:35 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)	12.5	12.5	12.5	12.5	12.4	12.4	12.4	12.4	12.3	12.3	12.3	12.3	12.2	12.2	12.2	12.1	12.1	12.1	12.1	12.0	12.0	12.0	12.0	11.9	11.9	11.9	11.9	11.8	11.8	11.8
Sunrise (AM)	6:36	6:36	6:37	6:37	6:37	6:38	6:38	6:39	6:39	6:39	6:40	6:40	6:41	6:41	6:41	6:42	6:42	6:43	6:43	6:43	6:44	6:44	6:45	6:45	6:45	6:46	6:46	6:47	6:47	6:48
Sunset (PM)	7:08	7:07	7:05	7:04	7:03	7:02	7:01	7:00	6:59	6:58	6:56	6:55	6:54	6:53	6:52	6:51	6:50	6:48	6:47	6:46	6:45	6:44	6:43	6:42	6:40	6:39	6:38	6:37	6:36	6:35

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.5	6:36	7:08
2	12.5	6:36	7:07
3	12.5	6:37	7:05
4	12.5	6:37	7:04
5	12.4	6:37	7:03
6	12.4	6:38	7:02
7	12.4	6:38	7:01
8	12.4	6:39	7:00
9	12.3	6:39	6:59
10	12.3	6:39	6:58
11	12.3	6:40	6:56
12	12.3	6:40	6:55
13	12.2	6:41	6:54
14	12.2	6:41	6:53
15	12.2	6:41	6:52
16	12.1	6:42	6:51
17	12.1	6:42	6:50
18	12.1	6:43	6:48
19	12.1	6:43	6:47
20	12.0	6:43	6:46
21	12.0	6:44	6:45
22	12.0	6:44	6:44
23	12.0	6:45	6:43
24	11.9	6:45	6:42
25	11.9	6:45	6:40
26	11.9	6:46	6:39
27	11.9	6:46	6:38
28	11.8	6:47	6:37
29	11.8	6:47	6:36
30	11.8	6:48	6:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.12 kWh/m².

For context, solar energy here swings from a low near 4.17 kWh/m² to a high of 7.96 kWh/m² in May across the year — September's 6.12 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)	6.5	6.5	6.5	6.4	6.4	6.4	6.3	6.3	6.3	6.3	6.2	6.2	6.2	6.2	6.1	6.1	6.1	6.1	6.1	6.0	6.0	6.0	6.0	6.0	6.0	6.0	6.0	6.0	6.0	5.9
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	6.5	Intense
2	6.5	Intense
3	6.5	Intense
4	6.4	Intense
5	6.4	Intense
6	6.4	Intense
7	6.3	Intense
8	6.3	Intense
9	6.3	Intense
10	6.3	Intense
11	6.2	Intense
12	6.2	Intense
13	6.2	Intense
14	6.2	Intense
15	6.1	Intense
16	6.1	Intense
17	6.1	Intense
18	6.1	Intense
19	6.1	Intense
20	6.0	Intense
21	6.0	Intense
22	6.0	Intense
23	6.0	Intense
24	6.0	Intense
25	6.0	Bright
26	6.0	Bright
27	6.0	Bright
28	6.0	Bright
29	6.0	Bright
30	5.9	Bright

Planning a trip in September

Is September a good time to visit San Pedro?

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

4.3

Sightseeing

8th-best month of the year

7.3

Beach & pool

6th-best month of the year

September is a reasonable time to visit San Pedro for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for San Pedro in September

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

In September, San Pedro sees daytime highs around 33°C and nights near 21°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in San Pedro 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 San Pedro peaks around July 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 6 (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)	6	9	11	12	13	13	13	13	11	9	7	6
Level	High	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	High	High

	UV index (midday)	Level
Jan	6	High
Feb	9	Very high
Mar	11	Extreme
Apr	12	Extreme
May	13	Extreme
Jun	13	Extreme
Jul	13	Extreme
Aug	13	Extreme
Sep	11	Extreme
Oct	9	Very high
Nov	7	High
Dec	6	High

Location & terrain

Where is San Pedro?

San Pedro sits at 25.8°N, 103.0°W, 1,101 m above sea level, in Mexico. The nearest listed city is Francisco I. Madero, 29 km away.

Topography around San Pedro

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

Within 3 km, the terrain around San Pedro has only modest variations in elevation — a maximum elevation change of 12 m around an average of 1,099 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 383 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,276 m.

The land around San Pedro is covered by shrubs (39%) and artificial surfaces (26%) within 3 km, shrubs (42%) and bare terrain (29%) within 16 km, and shrubs (57%) and bare terrain (32%) within 80 km.

3 km

12 m

shrubs 39%

16 km

383 m

shrubs 42%

80 km

2,276 m

shrubs 57%

treesshrubsgrasslandcroplandartificial surfacesbare terrain

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

September weather nearby: Francisco I. Madero 29 km · Matamoros 35 km · Torreón 50 km · Gómez Palacio 56 km · Lerdo 59 km · Parras de la Fuente 88 km · Juan Aldama 168 km · Guadalupe Victoria 185 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 San Pedro (25.756°, -102.9839°, elevation 1,101 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	34	22
2	33	22
3	33	22
4	33	22
5	33	22
6	33	22
7	33	22
8	33	22
9	33	22
10	33	22
11	33	22
12	33	22
13	33	22
14	33	21
15	33	21
16	33	21
17	33	21
18	32	21
19	32	21
20	32	21
21	32	21
22	32	21
23	32	21
24	32	20
25	32	20
26	32	20
27	32	20
28	32	20
29	32	20
30	32	20

	Clearer (%)	Cloudier (%)
1	73	27
2	73	27
3	72	28
4	72	28
5	72	28
6	71	29
7	71	29
8	71	29
9	71	29
10	71	29
11	70	30
12	70	30
13	70	30
14	71	29
15	70	30
16	70	30
17	70	30
18	70	30
19	71	29
20	71	29
21	72	28
22	72	28
23	73	27
24	74	26
25	75	25
26	76	24
27	78	22
28	78	22
29	80	20
30	80	20

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

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	17	37	36	10
2	17	36	37	10
3	17	35	38	10
4	17	34	38	10
5	17	34	39	10
6	17	33	40	10
7	17	33	40	10
8	17	33	40	10
9	17	33	40	10
10	17	33	40	10
11	18	33	40	9
12	18	34	39	9
13	18	34	39	9
14	19	34	38	9
15	20	35	38	8
16	20	35	37	8
17	21	35	36	8
18	23	34	35	8
19	24	34	34	8
20	26	33	33	8
21	28	33	32	7
22	30	32	30	7
23	33	31	29	7
24	35	31	28	7
25	37	30	27	7
26	39	29	25	6
27	41	29	24	6
28	43	29	23	5
29	44	28	23	5
30	46	28	22	4

	Avg high (°C)	Avg low (°C)
1	34	22
2	33	22
3	33	22
4	33	22
5	33	22
6	33	22
7	33	22
8	33	22
9	33	22
10	33	22
11	33	22
12	33	22
13	33	22
14	33	21
15	33	21
16	33	21
17	33	21
18	32	21
19	32	21
20	32	21
21	32	21
22	32	21
23	32	21
24	32	20
25	32	20
26	32	20
27	32	20
28	32	20
29	32	20
30	32	20

	Clearer (%)	Cloudier (%)
1	73	27
2	73	27
3	72	28
4	72	28
5	72	28
6	71	29
7	71	29
8	71	29
9	71	29
10	71	29
11	70	30
12	70	30
13	70	30
14	71	29
15	70	30
16	70	30
17	70	30
18	70	30
19	71	29
20	71	29
21	72	28
22	72	28
23	73	27
24	74	26
25	75	25
26	76	24
27	78	22
28	78	22
29	80	20
30	80	20

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

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	17	37	36	10
2	17	36	37	10
3	17	35	38	10
4	17	34	38	10
5	17	34	39	10
6	17	33	40	10
7	17	33	40	10
8	17	33	40	10
9	17	33	40	10
10	17	33	40	10
11	18	33	40	9
12	18	34	39	9
13	18	34	39	9
14	19	34	38	9
15	20	35	38	8
16	20	35	37	8
17	21	35	36	8
18	23	34	35	8
19	24	34	34	8
20	26	33	33	8
21	28	33	32	7
22	30	32	30	7
23	33	31	29	7
24	35	31	28	7
25	37	30	27	7
26	39	29	25	6
27	41	29	24	6
28	43	29	23	5
29	44	28	23	5
30	46	28	22	4

	Avg high (°C)	Avg low (°C)
1	34	22
2	33	22
3	33	22
4	33	22
5	33	22
6	33	22
7	33	22
8	33	22
9	33	22
10	33	22
11	33	22
12	33	22
13	33	22
14	33	21
15	33	21
16	33	21
17	33	21
18	32	21
19	32	21
20	32	21
21	32	21
22	32	21
23	32	21
24	32	20
25	32	20
26	32	20
27	32	20
28	32	20
29	32	20
30	32	20

	Clearer (%)	Cloudier (%)
1	73	27
2	73	27
3	72	28
4	72	28
5	72	28
6	71	29
7	71	29
8	71	29
9	71	29
10	71	29
11	70	30
12	70	30
13	70	30
14	71	29
15	70	30
16	70	30
17	70	30
18	70	30
19	71	29
20	71	29
21	72	28
22	72	28
23	73	27
24	74	26
25	75	25
26	76	24
27	78	22
28	78	22
29	80	20
30	80	20

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

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	17	37	36	10
2	17	36	37	10
3	17	35	38	10
4	17	34	38	10
5	17	34	39	10
6	17	33	40	10
7	17	33	40	10
8	17	33	40	10
9	17	33	40	10
10	17	33	40	10
11	18	33	40	9
12	18	34	39	9
13	18	34	39	9
14	19	34	38	9
15	20	35	38	8
16	20	35	37	8
17	21	35	36	8
18	23	34	35	8
19	24	34	34	8
20	26	33	33	8
21	28	33	32	7
22	30	32	30	7
23	33	31	29	7
24	35	31	28	7
25	37	30	27	7
26	39	29	25	6
27	41	29	24	6
28	43	29	23	5
29	44	28	23	5
30	46	28	22	4