Puerto Peñasco weather in September

In September, Puerto Peñasco sees average daytime highs of 32°C and overnight lows near 28°C, with 9 mm of rain across 1.4 wet days and about 12.2 hours of daylight. It is the 2nd-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 89% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 42 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Puerto Peñasco's 2nd-clearest and 8th-windiest month. For the whole year in context, see Puerto Peñasco's year-round climate.

Daytime high
32°
2nd warmest
Overnight low
28°
10th coldest
Rainfall
9 mm
1.4 wet days
Daylight
12 h 12 min
6:23 AM – 6:34 PM
Cloud cover
12%
2nd clearest
Wind
16 km/h
8th windiest
Solar energy
6.29 kWh/m²
Travel score
5.7
out of 10

Puerto Peñasco is municipal seat of Puerto Peñasco, State of Sonora, Mexico.

Founded
1927

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical September day in Puerto Peñasco reaches about 32°C in the afternoon and slips back to 28°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 33°C. Set against its neighbours, September runs on par with August and about 3°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13229
23229
33229
43229
53229
63229
73229
83229
93229
103229
113229
123229
133229
143228
153228
163228
173228
183128
193128
203128
213128
223128
233127
243127
253127
263127
273127
283127
293127
303126

How September really feels in Puerto Peñasco

Once humidity and wind are folded in, September averages 30 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
30
1 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

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

Puerto Peñasco weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan18° / 13°81.610.27.7
Feb19° / 14°112.110.97.7
Mar21° / 16°81.511.88.3
Apr23° / 19°30.612.79.2
May26° / 22°10.113.69.3
Jun29° / 25°10148.0
Jul31° / 29°20.413.85.7
Aug32° / 30°7113.15.2
Sep32° / 28°91.412.25.7
Oct28° / 24°8111.27.9
Nov23° / 18°81.110.48.9
Dec19° / 14°142.1107.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 89% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 4% of September, with mostly cloudy or overcast conditions the remaining 7%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1928
2928
3928
4928
5937
6937
7946
8946
9946
10946
11946
12946
13946
14946
15946
16946
17937
18937
19937
20937
21937
22937
23928
24928
25928
26937
27937
28937
29928
30928

Chance of precipitation in September

Any precipitation

Puerto Peñasco gets around 9 mm of rain over 1.4 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 5% and peaks near 6% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
16
26
36
45
55
65
75
85
95
105
115
125
135
145
155
165
175
185
195
205
215
225
235
245
255
265
275
285
294
304

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 42% of days. Sticky, muggy-or-worse air turns up on roughly 88% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100172171
200182170
300182269
400192268
5002102365
6002112463
7002112562
8103122658
9103132756
10114142852
11114152950
12115162949
13115173046
14116173144
15216183141
16217193239
17228193237
18228203335
19329203333
20329213331
213310213329
223311213328
234312223326
244412223325
255413223323
265514233321
276514233219
287615243118
297716243016
308816252914

Wind in September

Winds average 16 km/h in September.

Across September, daily wind ranges from about 15 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze

Sunrise & sunset in September

DaylightNight

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

Days shrink by about 60 minutes over September. Sunrise moves from 6:14 AM to 6:32 AM, and sunset from 6:54 PM to 6:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.76:146:54
212.66:146:53
312.66:156:51
412.66:166:50
512.56:166:49
612.56:176:47
712.56:176:46
812.46:186:45
912.46:196:44
1012.46:196:42
1112.46:206:41
1212.36:206:40
1312.36:216:38
1412.36:226:37
1512.26:226:35
1612.26:236:34
1712.26:236:33
1812.16:246:31
1912.16:256:30
2012.16:256:29
2112.06:266:27
2212.06:276:26
2312.06:276:25
2411.96:286:23
2511.96:286:22
2611.96:296:21
2711.86:306:19
2811.86:306:18
2911.86:316:17
3011.76:326:15

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.29 kWh/m².

For context, solar energy here swings from a low near 3.5 kWh/m² to a high of 8.36 kWh/m² in June across the year — September's 6.29 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.7Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.5Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
116.4Intense
126.4Intense
136.4Intense
146.4Intense
156.3Intense
166.3Intense
176.3Intense
186.2Intense
196.2Intense
206.2Intense
216.1Intense
226.1Intense
236.1Intense
246.0Intense
256.0Intense
266.0Bright
275.9Bright
285.9Bright
295.9Bright
305.8Bright
Planning a trip in September

Is September a good time to visit Puerto Peñasco?

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

5.7
Sightseeing
10th-best month of the year
8.6
Beach & pool
4th-best month of the year

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

What to pack for Puerto Peñasco in September

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

In September, Puerto Peñasco sees daytime highs around 32°C and nights near 28°C. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near Puerto Peñasco in September

The nearest coast averages about 30°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 31°C and coldest in January near 17°C.

It's comfortable for a long swim from Apr 7 to Dec 7 — about 8.1 months when the water holds above 20°C.

15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan17Cool
Feb17Cool
Mar19Cool
Apr21Refreshing
May23Refreshing
Jun26Warm
Jul29Tropical
Aug31Tropical
Sep30Tropical
Oct27Warm
Nov23Refreshing
Dec19Cool

UV index in Puerto Peñasco in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Puerto Peñasco peaks around July 17 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 17UV 11Dec 18UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar6High
Apr9Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep9Very high
Oct7High
Nov5Moderate
Dec3Moderate
Location & terrain

Where is Puerto Peñasco?

Puerto Peñasco sits at 31.3°N, 113.5°W, 11 m above sea level, in Mexico. The nearest listed city is San Felipe, 128 km away.

San LuisSomertonCiudad Guadalupe VictoriaYuma

Topography around Puerto Peñasco

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

Within 3 km, the terrain around Puerto Peñasco has only modest variations in elevation — a maximum elevation change of 55 m around an average of 7 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 122 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,234 m.

The land around Puerto Peñasco is covered by artificial surfaces (40%), bare terrain (33%) and water (21%) within 3 km, water (53%) and bare terrain (42%) within 16 km, and bare terrain (52%) and water (35%) within 80 km.

3 km
55 m
16 km
122 m
80 km
1,234 m
shrubsgrasslandartificial surfacesbare terrainwaterwetland
September weather nearby: San Felipe 128 km · Heroica Caborca 147 km · Fortuna Foothills 170 km · San Luis Río Colorado 172 km · San Luis 175 km · Somerton 180 km · Ciudad Guadalupe Victoria 183 km · Yuma 187 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 Puerto Peñasco (31.3172°, -113.538°, elevation 11 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).