San Pedro weather in May

In May, San Pedro sees average daytime highs of 36°C and overnight lows near 21°C, with 7 mm of rain across 1.9 wet days and about 13.2 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 35°C in the first days to 36°C by the end. The sky is clear or mostly clear about 75% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 hours at the start of May to 13 h 30 min by month's end. Set against the rest of the year, May is San Pedro's 1st-clearest and 5th-windiest month. For the whole year in context, see San Pedro's year-round climate.

Daytime high
36°
2nd warmest
Overnight low
21°
9th coldest
Rainfall
7 mm
1.9 wet days
Daylight
13 h 18 min
6:11 AM – 7:26 PM
Cloud cover
27%
1st clearest
Wind
13 km/h
5th windiest
Solar energy
7.96 kWh/m²
Travel score
2.9
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.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 35°C in the first days to 36°C by the end.

A typical May day in San Pedro reaches about 36°C in the afternoon and slips back to 21°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 39°C. Set against its neighbours, May runs about 3°C warmer than April and on par with June.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13420
23420
33520
43520
53520
63520
73521
83521
93521
103521
113521
123521
133521
143521
153521
163621
173622
183622
193622
203622
213622
223622
233622
243622
253622
263622
273623
283623
293623
303623
313723

How May really feels in San Pedro

Once humidity and wind are folded in, May averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

San Pedro weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan22° / 91.510.68.4
Feb26° / 11°5111.18.5
Mar29° / 14°81.411.87.1
Apr33° / 18°30.912.64.7
May36° / 21°71.913.22.9
Jun36° / 23°14313.62.4
Jul35° / 24°244.413.42.9
Aug35° / 23°183.312.93.2
Sep33° / 21°285.112.24.3
Oct30° / 18°152.211.46.2
Nov26° / 13°91.610.78.6
Dec22° / 71.510.48.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 75% of the time in May, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of May, with mostly cloudy or overcast conditions the remaining 12%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18119
28119
38119
48218
58317
68317
78317
88416
98416
108515
118416
128515
138515
148614
158713
168812
178911
188911
198911
209010
21919
22919
23919
24928
25937
26937
27937
28937
29937
30937
31937

Chance of precipitation in May

Any precipitation

San Pedro gets around 7 mm of rain over 1.9 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 6% and peaks near 7% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
14
24
34
44
54
64
74
84
95
105
115
126
136
146
157
167
177
187
197
207
217
227
237
247
257
267
277
287
297
307
317

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 78% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1901000
2901000
3891100
4881110
5881110
6871210
7871210
8861310
9861310
10851410
11851410
12831520
13821620
14821620
15811720
16791830
17781930
18772030
19762130
20742240
21732340
22722440
23712540
24702550
25692650
26692650
27672760
28662761
29642871
30632881
31632881

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 hours at the start of May to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over May. Sunrise moves from 6:20 AM to 6:05 AM, and sunset from 7:18 PM to 7:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:207:18
213.06:207:18
313.06:197:19
413.06:187:19
513.06:177:20
613.16:177:20
713.16:167:21
813.16:157:22
913.16:157:22
1013.16:147:23
1113.26:137:23
1213.26:137:24
1313.26:127:24
1413.26:127:25
1513.26:117:25
1613.36:117:26
1713.36:107:26
1813.36:107:27
1913.36:097:27
2013.36:097:28
2113.36:087:29
2213.46:087:29
2313.46:077:30
2413.46:077:30
2513.46:077:31
2613.46:067:31
2713.46:067:32
2813.46:067:32
2913.56:067:33
3013.56:057:33
3113.56:057:34

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.96 kWh/m² — the sunniest month for solar.

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 — May's 7.96 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.8Intense
27.8Intense
37.8Intense
47.9Intense
57.9Intense
67.9Intense
77.9Intense
87.9Intense
97.9Intense
107.9Intense
117.9Intense
128.0Intense
138.0Intense
148.0Intense
158.0Intense
168.0Intense
178.0Intense
188.0Intense
198.0Intense
208.0Intense
218.0Intense
228.0Intense
238.0Intense
248.0Intense
258.0Intense
268.0Intense
278.0Intense
288.0Intense
298.0Intense
308.0Intense
318.0Intense
Planning a trip in May

Is May a good time to visit San Pedro?

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

2.9
Sightseeing
10th-best month of the year
6.5
Beach & pool
8th-best month of the year

May is a weaker month for outdoor sightseeing in San Pedro. The water and warmth also suit a beach or pool day.

What to pack for San Pedro in May

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

In May, San Pedro sees daytime highs around 36°C and nights near 21°C. Pack light clothes and sun protection.

light clothessun protection

UV index in San Pedro in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJul 11UV 13Dec 19UV 6
UV index (midday)Level
Jan6High
Feb9Very high
Mar11Extreme
Apr12Extreme
May13Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct9Very high
Nov7High
Dec6High
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.

Guadalupe Victoria

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
16 km
383 m
80 km
2,276 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May 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
Catholic 78%no religion 11%other Evangelical Churches 8%Jehovah Witness 1%

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).