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Hermosillo Weather in May
Hermosillo in May averages 37°C (99°F) during the day and 19°C (66°F) at night. This is the driest month of the year.
Rainfall in Hermosillo in May
Conditions tend to be dry and settled, making it a good month for outdoor plans. You can expect rain on roughly 0 days based on historical data, averaging 0.7 mm (0.03 in) for the month. Any rain that does arrive is likely to be light drizzle rather than a proper shower.
Temperature in Hermosillo in May
Daytime highs in Hermosillo in May reach 37°C (99°F), with nights around 19°C (66°F). Mornings and evenings are often more comfortable than the peak afternoon hours. With lows of 19°C (66°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Hermosillo in May
With approximately 300 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.May in Hermosillo can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Hermosillo Temperature in May
Min Temperature
19°C (66°F)
Max Temperature
37°C (99°F)
Chance of Rain
1%
Precipitation
0.7 mm (0.03 in)
Rainy days
0 days
Humidity
31%
Sunshine
300 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
49-year average (1976-2025)
Based on our historical records, temperatures in Hermosillo typically rise from around 34°C (93°F) at the start of May to approximately 37°C (99°F) by the end. Nights are pleasant, with lows typically ranging from 17°C (63°F) to 21°C (70°F).
Average temperatures in May
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather records for Hermosillo in May
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 May
Based on weather observations in Hermosillo between 2006 and 2026, these are the recorded extremes during May.
- The warmest day in May was on May 15, 2012, with a maximum of 45°C (113°F).
- The lowest daytime temperature in May was 22°C (72°F), recorded on May 8, 2017.
- Nighttime temperatures dropped to 12°C (54°F) on May 2, 2010, marking the coldest May night on record.
Best Places in Mexico in May
Find out more about the weather in Mexico and which places have the best travel conditions in this month. See all of Mexico in May →
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 May
Get ready for hot weather in May! Lightweight, breathable fabrics are your best friend during this month. Cotton and linen shirts, shorts, sundresses, and sandals will keep you comfortable. Light colors help reflect the heat, avoid wearing black. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Hermosillo in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming10/10 -
Camping10/10
Hermosillo 3-Day Forecast
More climate data for Hermosillo
Temperature Rainfall Sunshine Humidity
See the full Hermosillo climate overview or explore weather in Mexico.
Popular in May
Where to go in May - average daytime high across popular destinations.
San Miguel de Allende
32°C (90°F) Los Cabos
32°C (90°F) Puerto Vallarta30°C (86°F) Playa del Carmen
30°C (86°F) Tulum30°C (86°F) Cancún30°C (86°F) Puerto Peñasco28°C (82°F) Mexico City26°C (79°F) Bucket list
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