Heroica Guaymas weather in August

In August, Heroica Guaymas sees average daytime highs of 35°C and overnight lows near 29°C, with 26 mm of rain across 4.5 wet days and about 13 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 35°C through the month. The sky is clear or mostly clear about 55% of the time in August, and the air most often feels miserable.

Daylight stretches from about 13 h 18 min at the start of August to 12 h 36 min by month's end. Set against the rest of the year, August is Heroica Guaymas's 11th-clearest and 3rd-windiest month. For the whole year in context, see Heroica Guaymas's year-round climate.

Daytime high
35°
1st warmest
Overnight low
29°
12th coldest
Rainfall
26 mm
4.5 wet days
Daylight
13 hours
5:58 AM – 6:58 PM
Cloud cover
39%
11th clearest
Wind
13 km/h
3rd windiest
Solar energy
6.55 kWh/m²
Travel score
3.0
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 August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 35°C through the month.

A typical August day in Heroica Guaymas reaches about 35°C in the afternoon and slips back to 29°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 37°C. Set against its neighbours, August runs on par with July and about 1°C warmer than September.

25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13529
23529
33529
43529
53529
63529
73529
83529
93529
103529
113529
123529
133529
143529
153529
163529
173529
183529
193529
203529
213529
223529
233529
243529
253529
263529
273529
283528
293428
303428
313428

How August really feels in Heroica Guaymas

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

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

Heroica Guaymas weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 2nd-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 August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 55% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 18% of August, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17030
27030
37030
47129
57129
67327
77327
87327
97327
107327
117327
127327
137327
147327
157327
167327
177228
187228
197228
207228
217228
227228
237327
247426
257426
267426
277525
287624
297624
307723
317723

Chance of precipitation in August

Any precipitation

Heroica Guaymas gets around 26 mm of rain over 4.5 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 15% and peaks near 23% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
18
28
38
48
58
69
79
89
910
1010
1111
1211
1312
1413
1514
1614
1715
1816
1917
2017
2118
2219
2319
2420
2520
2621
2721
2822
2922
3023
3123

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the miserable band about 78% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1033265
2023167
3023068
4022969
5022870
6022771
7012673
8012574
9012475
10012376
11012277
12012178
13012079
14012079
15011980
16011980
17011881
18011881
19011782
20011782
21021781
22021682
23121681
24121582
25121582
26121483
27131482
28131383
29131383
30131284
31131284

Wind in August

Winds average 13 km/h in August.

Across August, 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.

051015151015202531
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 August

DaylightNight

Daylight runs from about 13 h 18 min at the start of August to 12 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over August. Sunrise moves from 5:49 AM to 6:05 AM, and sunset from 7:10 PM to 6:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:497:10
213.35:507:09
313.35:517:08
413.35:517:08
513.35:527:07
613.25:527:06
713.25:537:06
813.25:537:05
913.25:547:04
1013.15:547:03
1113.15:557:02
1213.15:557:01
1313.15:567:00
1413.15:577:00
1513.05:576:59
1613.05:586:58
1713.05:586:57
1813.05:596:56
1912.95:596:55
2012.96:006:54
2112.96:006:53
2212.96:016:52
2312.86:016:51
2412.86:026:50
2512.86:026:49
2612.76:036:48
2712.76:036:46
2812.76:046:45
2912.76:046:44
3012.66:056:43
3112.66:056:42

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.55 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 — August's 6.55 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.8Intense
56.8Intense
66.8Intense
76.8Intense
86.7Intense
96.7Intense
106.7Intense
116.7Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.5Intense
176.5Intense
186.5Intense
196.4Intense
206.4Intense
216.4Intense
226.4Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
316.1Intense
Planning a trip in August

Hazard calendar for Heroica Guaymas

In seasonPeak

In August, 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 August a good time to visit Heroica Guaymas?

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

3.0
Sightseeing
12th-best month of the year
6.4
Beach & pool
12th-best month of the year

August is a weaker month for outdoor sightseeing in Heroica Guaymas. The water and warmth also suit a beach or pool day.

What to pack for Heroica Guaymas in August

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

In August, Heroica Guaymas sees daytime highs around 35°C and nights near 29°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

Sea temperature near Heroica Guaymas in August

The nearest coast averages about 30°C in August — 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 August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 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 August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August 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
August 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).