December weather forecastHermosillo, Mexico

The intricate design of the mighty Assumption Cathedral Church building located in Hermosillo, Mexico

December

Weather in December

December in Hermosillo ushers in the winter with much cooler temperatures compared to November. With average highs of 22.7°C (72.9°F) and lows hovering around 12.3°C (54.1°F), December marks the onset of cooler and shorter days. The relatively low humidity levels coupled with shorter daylight hours offer a distinct winter charm. Despite a slight increase in rainfall, December mostly features clear, sunny days, creating an ideal climate for sightseeing. The holiday-time festivity in the cool winter air makes December a delightful time to visit Hermosillo.

Temperature

In Hermosillo, December is the month with the lowest recorded average temperatures, measuring a high of 22.7°C (72.9°F) and a low of 12.3°C (54.1°F).

Humidity

In Hermosillo, the average relative humidity in December is 40%.

Rainfall

In Hermosillo, during December, the rain falls for 2.8 days and regularly aggregates up to 8mm (0.31") of precipitation. In Hermosillo, during the entire year, the rain falls for 69.5 days and collects up to 262mm (10.31") of precipitation.

Daylight

With an average of 10h and 18min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:00 am and sunset at 5:25 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:36 pm MST.

Sunshine

With an average of 7h of sunshine, December has the least sunshine of the year.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: An average maximum UV index of 5 in December leads to these recommendations:
Ensure safety - Recommendations to avert sunburn are presented. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.

Updated: Feb 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Hermosillo's temperature records reveal December as the coldest month, marked by average highs of 22.7°C (72.9°F) and lows of 12.3°C (54.1°F).

In December, in Hermosillo, the average high-temperature is 22.7°C (72.9°F), and the average low-temperature is 12.3°C (54.1°F). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 42°C (107.6°F).

In December, the average relative humidity in Hermosillo, Mexico, is 40%.

In Hermosillo, in December, it is raining for 2.8 days, with typically 8mm (0.31") of accumulated precipitation.

The month with the shortest days in Hermosillo, Mexico, is December, with an average of 10h and 18min of daylight.

In December, the average day length in Hermosillo, Mexico, is 10h and 19min.

In December, on the first day of the month, sunrise is at 7:00 am and sunset at 5:25 pm. On the last day of the month, in Hermosillo, Mexico, sunrise is at 7:17 am and sunset at 5:36 pm MST.

The month with the least sunshine in Hermosillo is December, with an average of 7h of sunshine.

The average sunshine duration in December is 7h.

January, February, November and December, with an average maximum UV index of 5, are months with the lowest UV index in Hermosillo.

In Hermosillo, the average daily maximum UV index in December is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

27.6°C

22.7°C

23.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10.3km/h

10km/h

9.9km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

26.9

27.4

28.4

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Hermosillo, Mexico

Average high temperature in December: 22.7°C

The warmest month (with the highest average high temperature) is June (38.8°C).
The month with the lowest average high temperature is December (22.7°C).

Average low temperature in December: 12.3°C

The month with the highest average low temperature is July (28.7°C).
The coldest month (with the lowest average low temperature) is January (11.8°C).

Average pressure in December
Hermosillo, Mexico

Average pressure in December: 1016mbar

The month with the highest atmospheric pressure is January (1016.6mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).

Average wind speed in December
Hermosillo, Mexico

Average wind speed in December: 8.9km/h

The windiest month (with the highest average wind speed) is June (13.8km/h).
The calmest month (with the lowest average wind speed) is January (8.8km/h).

Average humidity in December
Hermosillo, Mexico

Average humidity in December: 40%

The month with the highest relative humidity is August (50%).
The month with the lowest relative humidity is May (22%).

Average rainfall in December
Hermosillo, Mexico

Average rainfall in December: 8mm

The wettest month (with the highest rainfall) is August (67mm).
The driest month (with the least rainfall) is May (0mm).

Average rainfall days in December
Hermosillo, Mexico

Average rainfall days in December: 2.8 days

The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is May (0.7 days).

Average daylight in December /
Average sunshine in December
Hermosillo, Mexico

Average daylight in December: 10h and 18min

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

Average sunshine in December: 7h and 0min

The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

Average sunshine days in December
Hermosillo, Mexico

Average sunshine days in December: 27.4 days

The month with the most sunshine days is May (30.2 days).
The month with the least sunshine days is July (9 days).

Average UV index in December
Hermosillo, Mexico

Average UV index in December: 5

The months with the highest UV index are May, June, July, August and September (UV index 8).
The months with the lowest UV index are January, February, November and December (UV index 5).

Average cloud cover in December
Hermosillo, Mexico

Average cloud cover in December: 16

The month with the most cloud cover is July (Cloud cover 24).
The month with the least cloud cover is May (Cloud cover 5).

Average visibility in December
Hermosillo, Mexico

Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).