Hermosillo Weather in December
December in Hermosillo typically sees daytime highs of 25°C (77°F) and nighttime lows of 9°C (48°F). Expect some rainfall during the month. It falls within the winter season.
Rainfall in Hermosillo in December
Typically around 2 days of rainfall are expected, averaging 21 mm (0.8 in) for the month. The rain this month typically falls in concentrated bursts rather than all-day showers. Expect a few heavier spells rather than constant grey skies.
Temperature in Hermosillo in December
December in Hermosillo is generally perfect, with days reaching 25°C (77°F) and nights settling around 9°C (48°F). The month of December belongs to the winter season. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet. This month stands out for its mildest temperatures but still delivers warm days.
Sunshine in Hermosillo in December
The month enjoys around 199 hours of sunshine, creating mostly sunny days with good weather conditions.So this is a great month to visit if you prefer dry days with pleasant temperatures.
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 December
Min Temperature
9°C (48°F)
Max Temperature
25°C (77°F)
Chance of Rain
7%
Precipitation
21 mm (0.8 in)
Rainy days
2 days
Humidity
48%
Sunshine
199 hours
Percentage Sunshine
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Hermosillo typically stay consistent throughout December, with daily highs averaging around 25°C (77°F). Nights are cool, with lows typically ranging from 8°C (46°F) to 11°C (52°F).
Average temperatures in December
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 December
Historical weather for Hermosillo in December
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 December
Based on weather observations in Hermosillo between 2006 and 2025, these are the recorded extremes during December.
- The warmest day in December was on December 14, 2016, with a maximum of 34°C (93°F).
- Hermosillo experienced its chilliest December day on December 20, 2013, reaching only 16°C (61°F).
- Hermosillo registered its coldest December night on December 30, 2018, with temperatures dropping to 0°C (32°F).
Best Places in Mexico in December
Find out more about the weather in Mexico and which places have the best travel conditions in this month. See all of Mexico in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Hermosillo in December
For Hermosillo in December, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Some rain is possible, so pack something to handle light showers. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Hermosillo in December
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.
