Heroica Guaymas weather in October

In October, Heroica Guaymas sees average daytime highs of 32°C and overnight lows near 23°C, with 17 mm of rain across 2.2 wet days and about 11.3 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 33°C in the first days to 30°C by the end. The sky is clear or mostly clear about 82% of the time in October, and the air most often feels muggy.

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 Heroica Guaymas's 3rd-clearest and 12th-windiest month. For the whole year in context, see Heroica Guaymas's year-round climate.

Daytime high
32°
5th warmest
Overnight low
23°
8th coldest
Rainfall
17 mm
2.2 wet days
Daylight
11 h 18 min
6:29 AM – 5:48 PM
Cloud cover
18%
3rd clearest
Wind
11 km/h
12th windiest
Solar energy
5.37 kWh/m²
Travel score
5.5
out of 10

Heroica Guaymas is municipal seat of Guaymas, State of Sonora, Mexico.

Founded
1701

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 33°C in the first days to 30°C by the end.

A typical October day in Heroica Guaymas reaches about 32°C in the afternoon and slips back to 23°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 35°C. Set against its neighbours, October runs about 2°C cooler than September and about 5°C warmer than November.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13326
23325
33325
43325
53325
63325
73325
83324
93324
103324
113224
123224
133223
143223
153223
163223
173223
183122
193122
203122
213122
223122
233121
243121
253021
263021
273020
283020
293020
303020
312920

How October really feels in Heroica Guaymas

Once humidity and wind are folded in, October averages 20 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
20
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.

Heroica Guaymas weather by month

How October compares with the rest of the year at a glance. October is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 12°81.310.48.7
Feb24° / 13°111.5118.7
Mar26° / 15°50.511.88.8
Apr28° / 18°10.212.68.0
May31° / 21°00.113.46.1
Jun34° / 25°10.213.74.4
Jul35° / 29°102.413.63.2
Aug35° / 29°264.5133.0
Sep34° / 27°595.512.23.7
Oct32° / 23°172.211.35.5
Nov27° / 17°121.310.68.2
Dec23° / 13°131.510.38.7

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 82% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 5% of October, with mostly cloudy or overcast conditions the remaining 13%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
19010
29010
39010
49010
59010
69010
78911
88911
98911
108911
118812
128812
138812
148812
158713
168713
178713
188713
198614
208713
218713
228713
238713
248614
258614
268614
278515
288416
298317
308317
318218

Chance of precipitation in October

Any precipitation

Heroica Guaymas gets around 17 mm of rain over 2.2 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 7% and peaks near 11% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
111
211
310
410
510
610
710
89
99
109
118
128
137
147
157
166
176
186
195
205
215
225
235
244
254
264
274
284
294
304
314

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the muggy band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 59% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1139233035
21310252932
31411262929
41412272927
52413282824
62515292821
73516302719
83618312617
93719322514
103720332412
114821332311
12482334229
13492434218
144102534207
154102534206
165112634196
175122734185
185132733175
195142733164
206152833154
216162833143
227172832143
237182832132
248192931122
259202930112
2610212929101
271121302791
281222302681
291323312571
301523312460
311624322360

Wind in October

Winds average 11 km/h in October, the calmest month.

Across October, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

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 6:20 AM to 6:39 AM, and sunset from 6:05 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:206:05
211.76:216:04
311.76:226:02
411.76:226:01
511.66:236:00
611.66:235:59
711.66:245:58
811.56:245:57
911.56:255:56
1011.56:255:55
1111.56:265:53
1211.46:275:52
1311.46:275:51
1411.46:285:50
1511.36:285:49
1611.36:295:48
1711.36:305:47
1811.36:305:46
1911.26:315:45
2011.26:325:44
2111.26:325:43
2211.26:335:43
2311.16:335:42
2411.16:345:41
2511.16:355:40
2611.16:365:39
2711.06:365:38
2811.06:375:38
2911.06:385:37
3011.06:385:36
3110.96:395:35

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.37 kWh/m².

For context, solar energy here swings from a low near 3.9 kWh/m² to a high of 8.14 kWh/m² in May across the year — October's 5.37 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
175.4Bright
185.3Bright
195.3Bright
205.3Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.1Bright
265.1Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
314.9Bright
Planning a trip in October

Hazard calendar for Heroica Guaymas

In seasonPeak

In October, Heroica Guaymas sits inside its pacific hurricane season. The full year is below, with each hazard's peak months called out.

Heroica Guaymas sits in the eastern Pacific hurricane zone; the season peaks August–September.

Pacific hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is October a good time to visit Heroica Guaymas?

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

5.5
Sightseeing
8th-best month of the year
8.4
Beach & pool
4th-best month of the year

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

What to pack for Heroica Guaymas in October

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

In October, Heroica Guaymas sees daytime highs around 32°C and nights near 23°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Heroica Guaymas in October

The nearest coast averages about 28°C in October — 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 30°C and coldest in January near 18°C.

It's comfortable for a long swim from Apr 6 to Dec 15 — about 8.4 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan18Cool
Feb18Cool
Mar19Cool
Apr21Refreshing
May24Refreshing
Jun27Warm
Jul29Tropical
Aug30Tropical
Sep30Tropical
Oct28Warm
Nov23Refreshing
Dec20Cool

UV index in Heroica Guaymas 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 Heroica Guaymas peaks around July 14 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 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 14UV 12Dec 19UV 4
UV index (midday)Level
Jan5Moderate
Feb6High
Mar8Very high
Apr10Extreme
May10Extreme
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep10Very high
Oct7Very high
Nov6High
Dec4Moderate

Air quality in Heroica Guaymas in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Heroica Guaymas is worst in July — around 18 µg/m³ PM2.5 (moderate), about 3.9× the cleanest month (January, 5 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1917 µg/m³Jan 115 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb5Good
Mar5Good
Apr6Good
May5Good
Jun8Good
Jul18Moderate
Aug13Moderate
Sep8Good
Oct5Good
Nov5Good
Dec5Good
Location & terrain

Where is Heroica Guaymas?

Heroica Guaymas sits at 27.9°N, 110.9°W, 18 m above sea level, in Mexico. The nearest listed city is Empalme, 10 km away.

Topography around Heroica Guaymas

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

Within 3 km, the terrain around Heroica Guaymas has significant variations in elevation — a maximum elevation change of 469 m around an average of 58 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 469 m; within 80 km, large variations in elevation — a maximum elevation change of 1,146 m.

The land around Heroica Guaymas is covered by shrubs (40%) and artificial surfaces (33%) within 3 km, water (51%) and shrubs (34%) within 16 km, and shrubs (50%) and water (38%) within 80 km.

3 km
469 m
16 km
469 m
80 km
1,146 m
treesshrubscroplandartificial surfacesbare terrainwatermangroves
October weather nearby: Empalme 10 km · San Carlos 15 km · Esperanza 102 km · Ciudad Obregón 106 km · Miguel Alemán (La Doce) 117 km · Hermosillo 130 km · Navojoa 172 km · Huatabampo 174 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 Heroica Guaymas (27.9199°, -110.8989°, elevation 18 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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. 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).