Hermosillo weather in October

In October, Hermosillo sees average daytime highs of 34°C and overnight lows near 19°C, with 19 mm of rain across 2.1 wet days and about 11.3 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 36°C in the first days to 31°C by the end. The sky is clear or mostly clear about 81% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of October to 10 h 54 min by month's end. Set against the rest of the year, October is Hermosillo's 3rd-clearest and 9th-windiest month. For the whole year in context, see Hermosillo's year-round climate.

Daytime high
34°
6th warmest
Overnight low
19°
8th coldest
Rainfall
19 mm
2.1 wet days
Daylight
11 h 18 min
6:30 AM – 5:48 PM
Cloud cover
19%
3rd clearest
Wind
8 km/h
9th windiest
Solar energy
5.36 kWh/m²
Travel score
4.1
out of 10

Hermosillo is city in Mexico, Sonora state capital.

Founded
1700

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 36°C in the first days to 31°C by the end.

A typical October day in Hermosillo reaches about 34°C in the afternoon and slips back to 19°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 38°C. Set against its neighbours, October runs about 3°C cooler than September and about 5°C warmer than November.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
13622
23622
33622
43622
53622
63521
73521
83521
93521
103520
113520
123520
133420
143420
153419
163419
173419
183419
193318
203318
213318
223318
233318
243217
253217
263217
273217
283216
293216
303116
313116

How October really feels in Hermosillo

Once humidity and wind are folded in, October averages 26 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
26
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Hermosillo weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 121.610.38.9
Feb26° / 10°152118.4
Mar29° / 12°70.911.87.3
Apr32° / 15°10.412.75.3
May36° / 18°00.113.43.0
Jun39° / 24°31.113.80.7
Jul39° / 27°407.613.70.8
Aug38° / 27°519.8131.2
Sep37° / 25°527.112.22.0
Oct34° / 19°192.111.34.1
Nov28° / 13°131.510.57.4
Dec24° / 191.910.28.7

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 81% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 7% of October, with mostly cloudy or overcast conditions the remaining 12%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
19010
2919
3919
49010
59010
69010
79010
89010
98911
108911
118911
128911
138911
148812
158812
168812
178812
188812
198812
208812
218812
228713
238713
248713
258713
268515
278515
288515
298416
308416
318416

Chance of precipitation in October

Any precipitation

Hermosillo gets around 19 mm of rain over 2.1 wet days in October. 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 12% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
112
211
311
410
510
69
79
88
98
107
117
127
136
146
155
165
175
185
195
205
215
225
235
245
254
264
274
284
294
304
314

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 17% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
123171427163
225181427142
327181426132
429191425111
531201424101
63420142391
73620152180
83821152070
94021151860
104222141750
114422141540
124622141430
134823141330
144923141220
155023141120
165123141020
17532314910
18532314910
19542314810
20552314710
21562313710
22572313610
23602212500
24612212500
25632211400
26652110400
27662010400
2868209300
2969199300
3072188200
3173178200

Wind in October

Winds average 8 km/h in October.

Across October, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 42 min at the start of October to 10 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over October. Sunrise moves from 6:21 AM to 6:41 AM, and sunset from 6:05 PM to 5:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:216:05
211.76:226:03
311.76:226:02
411.66:236:01
511.66:236:00
611.66:245:59
711.56:255:57
811.56:255:56
911.56:265:55
1011.56:265:54
1111.46:275:53
1211.46:285:52
1311.46:285:51
1411.36:295:50
1511.36:305:49
1611.36:305:48
1711.36:315:46
1811.26:325:45
1911.26:325:44
2011.26:335:44
2111.16:345:43
2211.16:345:42
2311.16:355:41
2411.16:365:40
2511.06:365:39
2611.06:375:38
2711.06:385:37
2811.06:395:36
2910.96:395:36
3010.96:405:35
3110.96:415:34

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.36 kWh/m².

For context, solar energy here swings from a low near 3.81 kWh/m² to a high of 8.27 kWh/m² in May across the year — October's 5.36 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.6Bright
85.6Bright
95.6Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.4Bright
155.4Bright
165.4Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.2Bright
225.2Bright
235.2Bright
245.1Bright
255.1Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
304.9Bright
314.9Bright
Planning a trip in October

Is October a good time to visit Hermosillo?

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

4.1
Sightseeing
7th-best month of the year
7.5
Beach & pool
5th-best month of the year

October is a reasonable time to visit Hermosillo for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Hermosillo in October

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

In October, Hermosillo sees daytime highs around 34°C and nights near 19°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Hermosillo in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hermosillo peaks around July 11 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighModerateJul 11UV 12Dec 18UV 4
UV index (midday)Level
Jan5Moderate
Feb6High
Mar8Very high
Apr10Extreme
May10Extreme
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep10Very high
Oct7High
Nov5High
Dec4Moderate
Location & terrain

Where is Hermosillo?

Hermosillo sits at 29.1°N, 111.0°W, 202 m above sea level, in Mexico. The nearest listed city is Miguel Alemán (La Doce), 57 km away.

EsperanzaCiudad ObregónHeroica Caborca

Topography around Hermosillo

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

Within 3 km, the terrain around Hermosillo has only modest variations in elevation — a maximum elevation change of 142 m around an average of 213 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 530 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,508 m.

The land around Hermosillo is covered by artificial surfaces (89%) within 3 km, shrubs (63%) within 16 km, and shrubs (85%) within 80 km.

3 km
142 m
16 km
530 m
80 km
1,508 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
October weather nearby: Miguel Alemán (La Doce) 57 km · San Carlos 126 km · Empalme 126 km · Heroica Guaymas 130 km · Magdalena de Kino 171 km · Esperanza 196 km · Ciudad Obregón 205 km · Heroica Caborca 215 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 Hermosillo (29.0887°, -110.9668°, elevation 202 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).