Hermosillo weather in December

In December, Hermosillo sees average daytime highs of 24°C and overnight lows near 9°C, with 19 mm of rain across 1.9 wet days and about 10.2 hours of daylight. It is the 12th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 23°C by the end. The sky is clear or mostly clear about 65% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 18 min at the start of December to 10 h 12 min by month's end. Set against the rest of the year, December is Hermosillo's 9th-clearest and 7th-windiest month. For the whole year in context, see Hermosillo's year-round climate.

Daytime high: 24°; 12th warmest
Overnight low: 9°; 2nd coldest
Rainfall: 19 mm; 1.9 wet days
Daylight: 10 h 12 min; 7:16 AM – 5:25 PM
Cloud cover: 32%; 9th clearest
Wind: 9 km/h; 7th windiest
Solar energy: 3.81 kWh/m²
Travel score: 8.7; out of 10

Hermosillo is city in Mexico, Sonora state capital.

Founded: 1700

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← November Hermosillo year-round climate January →Best places to visit in December

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 25°C in the first days to 23°C by the end.

A typical December day in Hermosillo reaches about 24°C in the afternoon and slips back to 9°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 28°C. Set against its neighbours, December runs about 5°C cooler than November and on par with January.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	25	25	25	25	25	25	25	24	24	24	24	24	24	24	24	24	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23
Avg low (°C)	11	10	10	10	10	10	10	10	10	10	10	9	9	9	9	9	9	9	9	9	9	8	8	8	8	8	8	8	8	8	8

	Avg high (°C)	Avg low (°C)
1	25	11
2	25	10
3	25	10
4	25	10
5	25	10
6	25	10
7	25	10
8	24	10
9	24	10
10	24	10
11	24	10
12	24	9
13	24	9
14	24	9
15	24	9
16	24	9
17	23	9
18	23	9
19	23	9
20	23	9
21	23	9
22	23	8
23	23	8
24	23	8
25	23	8
26	23	8
27	23	8
28	23	8
29	23	8
30	23	8
31	23	8

How December really feels in Hermosillo

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Hermosillo weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 5th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	24° / 9°	12	1.6	10.3	8.9
Feb	26° / 10°	15	2	11	8.4
Mar	29° / 12°	7	0.9	11.8	7.3
Apr	32° / 15°	1	0.4	12.7	5.3
May	36° / 18°	0	0.1	13.4	3.0
Jun	39° / 24°	3	1.1	13.8	0.7
Jul	39° / 27°	40	7.6	13.7	0.8
Aug	38° / 27°	51	9.8	13	1.2
Sep	37° / 25°	52	7.1	12.2	2.0
Oct	34° / 19°	19	2.1	11.3	4.1
Nov	28° / 13°	13	1.5	10.5	7.4
Dec	24° / 9°	19	1.9	10.2	8.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 65% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 10% of December, with mostly cloudy or overcast conditions the remaining 25%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	72	72	72	73	73	73	73	74	75	75	76	76	76	77	77	77	78	78	77	77	77	76	75	75	74	74	74	74	74	74	74
Cloudier (%)	28	28	28	27	27	27	27	26	25	25	24	24	24	23	23	23	22	22	23	23	23	24	25	25	26	26	26	26	26	26	26

	Clearer (%)	Cloudier (%)
1	72	28
2	72	28
3	72	28
4	73	27
5	73	27
6	73	27
7	73	27
8	74	26
9	75	25
10	75	25
11	76	24
12	76	24
13	76	24
14	77	23
15	77	23
16	77	23
17	78	22
18	78	22
19	77	23
20	77	23
21	77	23
22	76	24
23	75	25
24	75	25
25	74	26
26	74	26
27	74	26
28	74	26
29	74	26
30	74	26
31	74	26

Chance of precipitation in December

Any precipitation

Hermosillo gets around 19 mm of rain over 1.9 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 6% and peaks near 7% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	6	6	6	6	6	6	6	6	6	6	5	5	5	5

	Rain chance (%)
1	7
2	7
3	7
4	7
5	7
6	7
7	7
8	7
9	7
10	7
11	7
12	7
13	7
14	7
15	7
16	7
17	7
18	6
19	6
20	6
21	6
22	6
23	6
24	6
25	6
26	6
27	6
28	5
29	5
30	5
31	5

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 96% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	94	93	93	94	94	94	94	94	94	94	95	95	95	96	96	96	97	97	97	97	97	97	97	97	97	97	97	97	97	97	96
Comfortable (%)	5	6	6	5	5	5	5	5	5	5	4	4	4	3	3	3	2	2	2	2	2	2	2	2	2	3	3	3	3	3	4
Humid (%)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0

	Dry (%)	Comfortable (%)	Humid (%)
1	94	5	1
2	93	6	1
3	93	6	1
4	94	5	1
5	94	5	1
6	94	5	1
7	94	5	1
8	94	5	1
9	94	5	1
10	94	5	1
11	95	4	1
12	95	4	1
13	95	4	1
14	96	3	1
15	96	3	1
16	96	3	1
17	97	2	1
18	97	2	1
19	97	2	1
20	97	2	1
21	97	2	1
22	97	2	1
23	97	2	1
24	97	2	1
25	97	2	1
26	97	3	0
27	97	3	0
28	97	3	0
29	97	3	0
30	97	3	0
31	96	4	0

Wind in December

Winds average 9 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	9	calm
2	9	calm
3	9	calm
4	9	calm
5	9	calm
6	9	calm
7	9	calm
8	9	calm
9	9	calm
10	9	calm
11	9	calm
12	9	calm
13	9	calm
14	9	calm
15	9	calm
16	9	calm
17	9	calm
18	9	calm
19	9	calm
20	9	calm
21	9	calm
22	9	calm
23	9	calm
24	9	calm
25	9	calm
26	9	calm
27	9	calm
28	9	calm
29	9	calm
30	9	calm
31	9	calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 18 min at the start of December to 10 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 7:05 AM to 7:22 AM, and sunset from 5:22 PM to 5:32 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	10.3	10.3	10.3	10.2	10.2	10.2	10.2	10.2	10.2	10.2	10.2	10.2	10.2	10.2	10.2	10.2	10.1	10.1	10.1	10.1	10.1	10.1	10.1	10.1	10.1	10.1	10.1	10.2	10.2	10.2	10.2
Sunrise (AM)	7:05	7:06	7:07	7:08	7:08	7:09	7:10	7:10	7:11	7:12	7:12	7:13	7:14	7:14	7:15	7:16	7:16	7:17	7:17	7:18	7:18	7:19	7:19	7:20	7:20	7:20	7:21	7:21	7:21	7:22	7:22
Sunset (PM)	5:22	5:22	5:22	5:22	5:22	5:22	5:22	5:22	5:23	5:23	5:23	5:23	5:24	5:24	5:24	5:25	5:25	5:25	5:26	5:26	5:27	5:27	5:27	5:28	5:29	5:29	5:30	5:30	5:31	5:31	5:32

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.3	7:05	5:22
2	10.3	7:06	5:22
3	10.3	7:07	5:22
4	10.2	7:08	5:22
5	10.2	7:08	5:22
6	10.2	7:09	5:22
7	10.2	7:10	5:22
8	10.2	7:10	5:22
9	10.2	7:11	5:23
10	10.2	7:12	5:23
11	10.2	7:12	5:23
12	10.2	7:13	5:23
13	10.2	7:14	5:24
14	10.2	7:14	5:24
15	10.2	7:15	5:24
16	10.2	7:16	5:25
17	10.1	7:16	5:25
18	10.1	7:17	5:25
19	10.1	7:17	5:26
20	10.1	7:18	5:26
21	10.1	7:18	5:27
22	10.1	7:19	5:27
23	10.1	7:19	5:27
24	10.1	7:20	5:28
25	10.1	7:20	5:29
26	10.1	7:20	5:29
27	10.1	7:21	5:30
28	10.2	7:21	5:30
29	10.2	7:21	5:31
30	10.2	7:22	5:31
31	10.2	7:22	5:32

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.81 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.81 kWh/m² to a high of 8.27 kWh/m² in May across the year — December's 3.81 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	3.9	3.9	3.9	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.9	3.9	3.9	3.9	3.9	3.9
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	3.9	Moderate
2	3.9	Moderate
3	3.9	Moderate
4	3.8	Moderate
5	3.8	Moderate
6	3.8	Moderate
7	3.8	Moderate
8	3.8	Moderate
9	3.8	Moderate
10	3.8	Moderate
11	3.8	Moderate
12	3.8	Moderate
13	3.8	Moderate
14	3.8	Moderate
15	3.8	Moderate
16	3.8	Moderate
17	3.8	Moderate
18	3.8	Moderate
19	3.8	Moderate
20	3.8	Moderate
21	3.8	Moderate
22	3.8	Moderate
23	3.8	Moderate
24	3.8	Moderate
25	3.8	Moderate
26	3.9	Moderate
27	3.9	Moderate
28	3.9	Moderate
29	3.9	Moderate
30	3.9	Moderate
31	3.9	Moderate

Planning a trip in December

Is December a good time to visit Hermosillo?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

8.7

Sightseeing

2nd-best month of the year

7.2

Beach & pool

7th-best month of the year

December is one of the better times to visit Hermosillo for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Hermosillo in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Hermosillo sees daytime highs around 24°C and nights near 9°C. Worth packing: light clothes.

light clothes

UV index in Hermosillo in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hermosillo peaks around July 11 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	5	6	8	10	10	12	12	11	10	7	5	4
Level	Moderate	High	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	High	High	Moderate

	UV index (midday)	Level
Jan	5	Moderate
Feb	6	High
Mar	8	Very high
Apr	10	Extreme
May	10	Extreme
Jun	12	Extreme
Jul	12	Extreme
Aug	11	Extreme
Sep	10	Very high
Oct	7	High
Nov	5	High
Dec	4	Moderate

Location & terrain

Where is Hermosillo?

Hermosillo sits at 29.1°N, 111.0°W, 202 m above sea level, in Mexico. The nearest listed city is Miguel Alemán (La Doce), 57 km away.

Topography around Hermosillo

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Hermosillo.

Within 3 km, the terrain around Hermosillo has only modest variations in elevation — a maximum elevation change of 142 m around an average of 213 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 530 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,508 m.

The land around Hermosillo is covered by artificial surfaces (89%) within 3 km, shrubs (63%) within 16 km, and shrubs (85%) within 80 km.

3 km

142 m

artificial surfaces 89%

16 km

530 m

shrubs 63%

80 km

1,508 m

shrubs 85%

treesshrubsgrasslandcroplandartificial surfacesbare terrain

← November Hermosillo year-round climate January →Best places to visit in December

December weather nearby: Miguel Alemán (La Doce) 57 km · San Carlos 126 km · Empalme 126 km · Heroica Guaymas 130 km · Magdalena de Kino 171 km · Esperanza 196 km · Ciudad Obregón 205 km · Heroica Caborca 215 km

Mexico travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type A / B; 120 / 127 V · 60 Hz
Prices: ≈ 54% of US; price level, 2025
GDP per capita: $13,889; 2025
Happiness: 7.0 / 10; World Happiness, 2025
Safe drinking water: 43%; of population, 2024
Homicide rate: 24.9; per 100k, 2023
Road deaths: 12.8; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: Very low; EF EPI 440
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Hermosillo (29.0887°, -110.9668°, elevation 202 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	25	11
2	25	10
3	25	10
4	25	10
5	25	10
6	25	10
7	25	10
8	24	10
9	24	10
10	24	10
11	24	10
12	24	9
13	24	9
14	24	9
15	24	9
16	24	9
17	23	9
18	23	9
19	23	9
20	23	9
21	23	9
22	23	8
23	23	8
24	23	8
25	23	8
26	23	8
27	23	8
28	23	8
29	23	8
30	23	8
31	23	8

	Clearer (%)	Cloudier (%)
1	72	28
2	72	28
3	72	28
4	73	27
5	73	27
6	73	27
7	73	27
8	74	26
9	75	25
10	75	25
11	76	24
12	76	24
13	76	24
14	77	23
15	77	23
16	77	23
17	78	22
18	78	22
19	77	23
20	77	23
21	77	23
22	76	24
23	75	25
24	75	25
25	74	26
26	74	26
27	74	26
28	74	26
29	74	26
30	74	26
31	74	26

	Rain chance (%)
1	7
2	7
3	7
4	7
5	7
6	7
7	7
8	7
9	7
10	7
11	7
12	7
13	7
14	7
15	7
16	7
17	7
18	6
19	6
20	6
21	6
22	6
23	6
24	6
25	6
26	6
27	6
28	5
29	5
30	5
31	5

	Dry (%)	Comfortable (%)	Humid (%)
1	94	5	1
2	93	6	1
3	93	6	1
4	94	5	1
5	94	5	1
6	94	5	1
7	94	5	1
8	94	5	1
9	94	5	1
10	94	5	1
11	95	4	1
12	95	4	1
13	95	4	1
14	96	3	1
15	96	3	1
16	96	3	1
17	97	2	1
18	97	2	1
19	97	2	1
20	97	2	1
21	97	2	1
22	97	2	1
23	97	2	1
24	97	2	1
25	97	2	1
26	97	3	0
27	97	3	0
28	97	3	0
29	97	3	0
30	97	3	0
31	96	4	0

	Avg high (°C)	Avg low (°C)
1	25	11
2	25	10
3	25	10
4	25	10
5	25	10
6	25	10
7	25	10
8	24	10
9	24	10
10	24	10
11	24	10
12	24	9
13	24	9
14	24	9
15	24	9
16	24	9
17	23	9
18	23	9
19	23	9
20	23	9
21	23	9
22	23	8
23	23	8
24	23	8
25	23	8
26	23	8
27	23	8
28	23	8
29	23	8
30	23	8
31	23	8

	Clearer (%)	Cloudier (%)
1	72	28
2	72	28
3	72	28
4	73	27
5	73	27
6	73	27
7	73	27
8	74	26
9	75	25
10	75	25
11	76	24
12	76	24
13	76	24
14	77	23
15	77	23
16	77	23
17	78	22
18	78	22
19	77	23
20	77	23
21	77	23
22	76	24
23	75	25
24	75	25
25	74	26
26	74	26
27	74	26
28	74	26
29	74	26
30	74	26
31	74	26

	Rain chance (%)
1	7
2	7
3	7
4	7
5	7
6	7
7	7
8	7
9	7
10	7
11	7
12	7
13	7
14	7
15	7
16	7
17	7
18	6
19	6
20	6
21	6
22	6
23	6
24	6
25	6
26	6
27	6
28	5
29	5
30	5
31	5

	Dry (%)	Comfortable (%)	Humid (%)
1	94	5	1
2	93	6	1
3	93	6	1
4	94	5	1
5	94	5	1
6	94	5	1
7	94	5	1
8	94	5	1
9	94	5	1
10	94	5	1
11	95	4	1
12	95	4	1
13	95	4	1
14	96	3	1
15	96	3	1
16	96	3	1
17	97	2	1
18	97	2	1
19	97	2	1
20	97	2	1
21	97	2	1
22	97	2	1
23	97	2	1
24	97	2	1
25	97	2	1
26	97	3	0
27	97	3	0
28	97	3	0
29	97	3	0
30	97	3	0
31	96	4	0

	Avg high (°C)	Avg low (°C)
1	25	11
2	25	10
3	25	10
4	25	10
5	25	10
6	25	10
7	25	10
8	24	10
9	24	10
10	24	10
11	24	10
12	24	9
13	24	9
14	24	9
15	24	9
16	24	9
17	23	9
18	23	9
19	23	9
20	23	9
21	23	9
22	23	8
23	23	8
24	23	8
25	23	8
26	23	8
27	23	8
28	23	8
29	23	8
30	23	8
31	23	8

	Clearer (%)	Cloudier (%)
1	72	28
2	72	28
3	72	28
4	73	27
5	73	27
6	73	27
7	73	27
8	74	26
9	75	25
10	75	25
11	76	24
12	76	24
13	76	24
14	77	23
15	77	23
16	77	23
17	78	22
18	78	22
19	77	23
20	77	23
21	77	23
22	76	24
23	75	25
24	75	25
25	74	26
26	74	26
27	74	26
28	74	26
29	74	26
30	74	26
31	74	26

	Rain chance (%)
1	7
2	7
3	7
4	7
5	7
6	7
7	7
8	7
9	7
10	7
11	7
12	7
13	7
14	7
15	7
16	7
17	7
18	6
19	6
20	6
21	6
22	6
23	6
24	6
25	6
26	6
27	6
28	5
29	5
30	5
31	5

	Dry (%)	Comfortable (%)	Humid (%)
1	94	5	1
2	93	6	1
3	93	6	1
4	94	5	1
5	94	5	1
6	94	5	1
7	94	5	1
8	94	5	1
9	94	5	1
10	94	5	1
11	95	4	1
12	95	4	1
13	95	4	1
14	96	3	1
15	96	3	1
16	96	3	1
17	97	2	1
18	97	2	1
19	97	2	1
20	97	2	1
21	97	2	1
22	97	2	1
23	97	2	1
24	97	2	1
25	97	2	1
26	97	3	0
27	97	3	0
28	97	3	0
29	97	3	0
30	97	3	0
31	96	4	0