Hermosillo Weather in August
August in Hermosillo brings extremely high temperatures, with highs of 39°C (102°F) and nights dropping to 27°C (81°F). It's the rainiest month of the year, so come prepared with waterproof gear.
Rainfall in Hermosillo in August
It's the month with the heaviest rainfall, so an umbrella is a must to navigate the wet weather. Records from the past 30 years suggest around 8 days of rain, with 60 mm (2.4 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Hermosillo in August
In August, expect extremely high temperatures in Hermosillo, with highs of 39°C (102°F) and lows of 27°C (81°F) at night. It's usually most comfortable outside during the morning and later in the day. Nights remain warm at around 27°C (81°F). For a more comfortable sleep, a cold shower before bed and a fan or air conditioning can make a big difference.
Sunshine in Hermosillo in August
There are approximately 282 hours of sunshine this month, resulting in mostly clear days.August in Hermosillo has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mexico, check out our Hermosillo's climate page.
Hermosillo Temperature in August
Min Temperature
27°C (81°F)
Max Temperature
39°C (102°F)
Chance of Rain
28%
Precipitation
60 mm (2.4 in)
Rainy days
8 days
Humidity
54%
Sunshine
282 hours
Percentage Sunshine
Daily Historical Temperatures
46-year average (1976-2025)
Based on our historical records, temperatures in Hermosillo typically stay consistent throughout August, with daily highs averaging around 39°C (102°F). Nights are warm, with lows around 27°C (81°F).
Average temperatures in August
Daily Historical Precipitation
46-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Hermosillo in August
Browse day-by-day weather records for Hermosillo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Hermosillo historical weather extremes in August
The extremes listed below come from historical weather data collected in Hermosillo from 2006 through 2025.
- The hottest August day on record in Hermosillo reached 47°C (117°F) (August 2, 2011).
- Hermosillo experienced its chilliest August day on August 26, 2008, reaching only 28°C (82°F).
- Nighttime temperatures dropped to 23°C (73°F) on August 5, 2007, marking the coldest August night on record.
Best Places in Mexico in August
Find out more about the weather in Mexico and which places have the best travel conditions in this month. See all of Mexico in August →
perfect weather
pleasant
tolerable
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What to Wear in Hermosillo in August
Hot weather in August means keeping cool is the priority. Loose-fitting clothes in natural fabrics work best. Pack plenty of shorts, tank tops, and breathable shirts. Don't forget a hat, swimwear, and comfortable sandals. Rain gear is recommended, you can expect wet weather on multiple days. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Hermosillo in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mexico, check out our Hermosillo's climate page.
Temperature Rainfall Sunshine Humidity
See the full Hermosillo climate overview or explore weather in Mexico.
