Heroica Guaymas weather in July

In July, Heroica Guaymas sees average daytime highs of 35°C and overnight lows near 29°C, with 10 mm of rain across 2.4 wet days and about 13.6 hours of daylight. It is the 1st-warmest and 7th-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 57% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 13 h 42 min at the start of July to 13 h 24 min by month's end. Set against the rest of the year, July is Heroica Guaymas's 12th-clearest and 1st-windiest month. For the whole year in context, see Heroica Guaymas's year-round climate.

Daytime high
35°
1st warmest
Overnight low
29°
11th coldest
Rainfall
10 mm
2.4 wet days
Daylight
13 h 36 min
5:41 AM – 7:18 PM
Cloud cover
40%
12th clearest
Wind
14 km/h
1st windiest
Solar energy
7.09 kWh/m²
Travel score
3.2
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 July

Average highAverage lowShaded bands: 10–90% of days

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

A typical July 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 33°C and 37°C. Set against its neighbours, July runs about 1°C warmer than June and on par with August.

25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13528
23528
33528
43528
53528
63528
73528
83528
93528
103528
113528
123528
133529
143529
153529
163529
173529
183529
193529
203529
213529
223529
233529
243529
253529
263529
273529
283529
293529
303529
313529

How July really feels in Heroica Guaymas

Once humidity and wind are folded in, July 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 July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Heroica Guaymas weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 7th-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 July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time in July, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of July, with mostly cloudy or overcast conditions the remaining 26%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18515
28317
38317
48119
58020
68020
77921
87822
97723
107624
117624
127624
137525
147525
157426
167426
177327
187327
197228
207228
217129
227030
236931
246931
256931
266931
276931
286931
296931
306931
316931

Chance of precipitation in July

Any precipitation

Heroica Guaymas gets around 10 mm of rain over 2.4 wet days in July. 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 8% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
14
25
35
46
56
66
77
87
97
107
118
128
138
148
158
168
178
188
198
208
218
228
238
248
258
268
278
288
298
308
318

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 48% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
114106025
21496026
31396027
41395928
51385830
61285831
71285732
81285633
91275535
101275436
111275337
121275139
131265140
141265042
151164943
161154845
170154746
180154747
190144649
200144550
210144451
220144352
230044155
240044056
250044056
260043957
270033859
280033760
290033661
300033562
310033463

Wind in July

Winds average 14 km/h in July, the windiest month of the year.

Across July, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 13 h 42 min at the start of July to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over July. Sunrise moves from 5:34 AM to 5:49 AM, and sunset from 7:19 PM to 7:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:347:19
213.75:357:19
313.75:357:19
413.75:367:19
513.75:367:19
613.75:367:19
713.75:377:19
813.75:377:19
913.75:387:19
1013.75:387:19
1113.75:387:19
1213.75:397:19
1313.65:397:18
1413.65:407:18
1513.65:407:18
1613.65:417:18
1713.65:417:17
1813.65:427:17
1913.65:427:17
2013.65:437:16
2113.55:437:16
2213.55:447:15
2313.55:457:15
2413.55:457:14
2513.55:467:14
2613.55:467:13
2713.45:477:13
2813.45:477:12
2913.45:487:12
3013.45:487:11
3113.45:497:10

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 7.09 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 — July's 7.09 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
17.5Intense
27.5Intense
37.5Intense
47.4Intense
57.4Intense
67.3Intense
77.3Intense
87.3Intense
97.3Intense
107.2Intense
117.2Intense
127.2Intense
137.2Intense
147.1Intense
157.1Intense
167.1Intense
177.1Intense
187.1Intense
197.0Intense
207.0Intense
217.0Intense
227.0Intense
237.0Intense
247.0Intense
256.9Intense
266.9Intense
276.9Intense
286.9Intense
296.9Intense
306.9Intense
316.9Intense
Planning a trip in July

Hazard calendar for Heroica Guaymas

In seasonPeak

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

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

3.2
Sightseeing
11th-best month of the year
6.8
Beach & pool
9th-best month of the year

July 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 July

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

In July, Heroica Guaymas sees daytime highs around 35°C and nights near 29°C. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near Heroica Guaymas in July

The nearest coast averages about 29°C in July — 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 July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 12 (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 July

GoodModeratePoorUnhealthyVery unhealthy

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