Hermosillo
Weather by month
Current –

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.

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

Hermosillo Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Hermosillo - and find the best time to visit.

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 records 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 2026.

  • 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
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

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.

  • Swimming
    10/10
  • Camping
    7/10

Hermosillo 3-Day Forecast

More climate data for Hermosillo

Popular in August

Where to go in August - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.