Hermosillo weather in May

In May, Hermosillo sees average daytime highs of 36°C and overnight lows near 18°C, with 0 mm of rain across 0.1 wet days and about 13.4 hours of daylight. It is the 5th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 34°C in the first days to 37°C by the end. The sky is clear or mostly clear about 84% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of May to 13 h 42 min by month's end. Set against the rest of the year, May is Hermosillo's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Hermosillo's year-round climate.

Daytime high: 36°; 5th warmest
Overnight low: 18°; 7th coldest
Rainfall: 0 mm; 0.1 wet days
Daylight: 13 h 24 min; 5:37 AM – 7:04 PM
Cloud cover: 16%; 2nd clearest
Wind: 10 km/h; 2nd windiest
Solar energy: 8.27 kWh/m²
Travel score: 3.0; 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.

← April Hermosillo year-round climate June →Best places to visit in May

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 34°C in the first days to 37°C by the end.

A typical May day in Hermosillo reaches about 36°C in the afternoon and slips back to 18°C overnight — a 17°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 39°C. Set against its neighbours, May runs about 4°C warmer than April and about 3°C cooler than June.

	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)	34	34	34	34	35	35	35	35	35	35	35	35	35	35	35	36	36	36	36	36	36	36	36	36	36	37	37	37	37	37	37
Avg low (°C)	17	17	17	17	17	17	17	18	18	18	18	18	18	18	18	18	18	19	19	19	19	19	19	19	19	20	20	20	20	20	20

	Avg high (°C)	Avg low (°C)
1	34	17
2	34	17
3	34	17
4	34	17
5	35	17
6	35	17
7	35	17
8	35	18
9	35	18
10	35	18
11	35	18
12	35	18
13	35	18
14	35	18
15	35	18
16	36	18
17	36	18
18	36	19
19	36	19
20	36	19
21	36	19
22	36	19
23	36	19
24	36	19
25	36	19
26	37	20
27	37	20
28	37	20
29	37	20
30	37	20
31	37	20

How May really feels in Hermosillo

Once humidity and wind are folded in, May averages 31 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

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Hermosillo weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 12th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 84% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 6% of May, with mostly cloudy or overcast conditions the remaining 10%.

	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 (%)	87	88	88	89	89	89	89	89	90	90	90	90	90	90	90	90	90	90	90	90	90	90	91	91	91	91	91	91	91	92	92
Cloudier (%)	13	12	12	11	11	11	11	11	10	10	10	10	10	10	10	10	10	10	10	10	10	10	9	9	9	9	9	9	9	8	8

	Clearer (%)	Cloudier (%)
1	87	13
2	88	12
3	88	12
4	89	11
5	89	11
6	89	11
7	89	11
8	89	11
9	90	10
10	90	10
11	90	10
12	90	10
13	90	10
14	90	10
15	90	10
16	90	10
17	90	10
18	90	10
19	90	10
20	90	10
21	90	10
22	90	10
23	91	9
24	91	9
25	91	9
26	91	9
27	91	9
28	91	9
29	91	9
30	92	8
31	92	8

Chance of precipitation in May

Any precipitation

Hermosillo gets around 0 mm of rain over 0.1 wet days in May, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 0% and peaks near 1% 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 (%)	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1

	Rain chance (%)
1	1
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	1
24	1
25	1
26	1
27	1
28	1
29	1
30	1
31	1

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 93% 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 (%)	99	99	99	99	98	98	98	98	98	98	96	96	96	96	95	95	95	93	93	93	92	92	91	90	88	88	86	85	83	82	80
Comfortable (%)	1	1	1	1	2	2	2	2	2	2	3	3	3	3	4	4	4	5	5	5	6	6	7	8	9	9	10	11	12	13	14
Humid (%)	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	2	2	2	2	2	2	2	3	3	3	3	4	4	5
Muggy (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	99	1	0	0
2	99	1	0	0
3	99	1	0	0
4	99	1	0	0
5	98	2	0	0
6	98	2	0	0
7	98	2	0	0
8	98	2	0	0
9	98	2	0	0
10	98	2	0	0
11	96	3	1	0
12	96	3	1	0
13	96	3	1	0
14	96	3	1	0
15	95	4	1	0
16	95	4	1	0
17	95	4	1	0
18	93	5	2	0
19	93	5	2	0
20	93	5	2	0
21	92	6	2	0
22	92	6	2	0
23	91	7	2	0
24	90	8	2	0
25	88	9	3	0
26	88	9	3	0
27	86	10	3	1
28	85	11	3	1
29	83	12	4	1
30	82	13	4	1
31	80	14	5	1

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 11 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)	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	11	11	11	11
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	10	calm
2	10	calm
3	10	calm
4	10	calm
5	10	calm
6	10	calm
7	10	calm
8	10	calm
9	10	calm
10	10	calm
11	10	calm
12	10	calm
13	10	calm
14	10	calm
15	10	calm
16	10	calm
17	10	calm
18	10	calm
19	10	calm
20	10	calm
21	10	calm
22	10	calm
23	10	calm
24	10	calm
25	10	calm
26	10	calm
27	10	calm
28	11	calm
29	11	calm
30	11	calm
31	11	calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 06 min at the start of May to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over May. Sunrise moves from 5:48 AM to 5:30 AM, and sunset from 6:54 PM to 7:12 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)	13.1	13.1	13.2	13.2	13.2	13.2	13.3	13.3	13.3	13.3	13.3	13.4	13.4	13.4	13.4	13.4	13.5	13.5	13.5	13.5	13.5	13.6	13.6	13.6	13.6	13.6	13.6	13.7	13.7	13.7	13.7
Sunrise (AM)	5:48	5:47	5:46	5:45	5:45	5:44	5:43	5:42	5:41	5:41	5:40	5:39	5:39	5:38	5:37	5:37	5:36	5:35	5:35	5:34	5:34	5:33	5:33	5:33	5:32	5:32	5:31	5:31	5:31	5:30	5:30
Sunset (PM)	6:54	6:55	6:55	6:56	6:57	6:57	6:58	6:59	6:59	7:00	7:00	7:01	7:02	7:02	7:03	7:04	7:04	7:05	7:05	7:06	7:07	7:07	7:08	7:08	7:09	7:10	7:10	7:11	7:11	7:12	7:12

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.1	5:48	6:54
2	13.1	5:47	6:55
3	13.2	5:46	6:55
4	13.2	5:45	6:56
5	13.2	5:45	6:57
6	13.2	5:44	6:57
7	13.3	5:43	6:58
8	13.3	5:42	6:59
9	13.3	5:41	6:59
10	13.3	5:41	7:00
11	13.3	5:40	7:00
12	13.4	5:39	7:01
13	13.4	5:39	7:02
14	13.4	5:38	7:02
15	13.4	5:37	7:03
16	13.4	5:37	7:04
17	13.5	5:36	7:04
18	13.5	5:35	7:05
19	13.5	5:35	7:05
20	13.5	5:34	7:06
21	13.5	5:34	7:07
22	13.6	5:33	7:07
23	13.6	5:33	7:08
24	13.6	5:33	7:08
25	13.6	5:32	7:09
26	13.6	5:32	7:10
27	13.6	5:31	7:10
28	13.7	5:31	7:11
29	13.7	5:31	7:11
30	13.7	5:30	7:12
31	13.7	5:30	7:12

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 8.27 kWh/m² — the sunniest month for solar.

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 — May's 8.27 kWh/m² sits near the top of that range.

	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)	8.1	8.1	8.1	8.1	8.1	8.2	8.2	8.2	8.2	8.2	8.2	8.2	8.2	8.2	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
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	8.1	Intense
2	8.1	Intense
3	8.1	Intense
4	8.1	Intense
5	8.1	Intense
6	8.2	Intense
7	8.2	Intense
8	8.2	Intense
9	8.2	Intense
10	8.2	Intense
11	8.2	Intense
12	8.2	Intense
13	8.2	Intense
14	8.2	Intense
15	8.3	Intense
16	8.3	Intense
17	8.3	Intense
18	8.3	Intense
19	8.3	Intense
20	8.3	Intense
21	8.3	Intense
22	8.3	Intense
23	8.3	Intense
24	8.3	Intense
25	8.3	Intense
26	8.3	Intense
27	8.3	Intense
28	8.3	Intense
29	8.3	Intense
30	8.3	Intense
31	8.3	Intense

Planning a trip in May

Is May a good time to visit Hermosillo?

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

3.0

Sightseeing

8th-best month of the year

6.8

Beach & pool

8th-best month of the year

May is a weaker month for outdoor sightseeing in Hermosillo. The water and warmth also suit a beach or pool day.

What to pack for Hermosillo in May

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

In May, Hermosillo sees daytime highs around 36°C and nights near 18°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Hermosillo in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). 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

← April Hermosillo year-round climate June →Best places to visit in May

May 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	34	17
2	34	17
3	34	17
4	34	17
5	35	17
6	35	17
7	35	17
8	35	18
9	35	18
10	35	18
11	35	18
12	35	18
13	35	18
14	35	18
15	35	18
16	36	18
17	36	18
18	36	19
19	36	19
20	36	19
21	36	19
22	36	19
23	36	19
24	36	19
25	36	19
26	37	20
27	37	20
28	37	20
29	37	20
30	37	20
31	37	20

	Clearer (%)	Cloudier (%)
1	87	13
2	88	12
3	88	12
4	89	11
5	89	11
6	89	11
7	89	11
8	89	11
9	90	10
10	90	10
11	90	10
12	90	10
13	90	10
14	90	10
15	90	10
16	90	10
17	90	10
18	90	10
19	90	10
20	90	10
21	90	10
22	90	10
23	91	9
24	91	9
25	91	9
26	91	9
27	91	9
28	91	9
29	91	9
30	92	8
31	92	8

	Rain chance (%)
1	1
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	1
24	1
25	1
26	1
27	1
28	1
29	1
30	1
31	1

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	99	1	0	0
2	99	1	0	0
3	99	1	0	0
4	99	1	0	0
5	98	2	0	0
6	98	2	0	0
7	98	2	0	0
8	98	2	0	0
9	98	2	0	0
10	98	2	0	0
11	96	3	1	0
12	96	3	1	0
13	96	3	1	0
14	96	3	1	0
15	95	4	1	0
16	95	4	1	0
17	95	4	1	0
18	93	5	2	0
19	93	5	2	0
20	93	5	2	0
21	92	6	2	0
22	92	6	2	0
23	91	7	2	0
24	90	8	2	0
25	88	9	3	0
26	88	9	3	0
27	86	10	3	1
28	85	11	3	1
29	83	12	4	1
30	82	13	4	1
31	80	14	5	1

	Avg high (°C)	Avg low (°C)
1	34	17
2	34	17
3	34	17
4	34	17
5	35	17
6	35	17
7	35	17
8	35	18
9	35	18
10	35	18
11	35	18
12	35	18
13	35	18
14	35	18
15	35	18
16	36	18
17	36	18
18	36	19
19	36	19
20	36	19
21	36	19
22	36	19
23	36	19
24	36	19
25	36	19
26	37	20
27	37	20
28	37	20
29	37	20
30	37	20
31	37	20

	Clearer (%)	Cloudier (%)
1	87	13
2	88	12
3	88	12
4	89	11
5	89	11
6	89	11
7	89	11
8	89	11
9	90	10
10	90	10
11	90	10
12	90	10
13	90	10
14	90	10
15	90	10
16	90	10
17	90	10
18	90	10
19	90	10
20	90	10
21	90	10
22	90	10
23	91	9
24	91	9
25	91	9
26	91	9
27	91	9
28	91	9
29	91	9
30	92	8
31	92	8

	Rain chance (%)
1	1
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	1
24	1
25	1
26	1
27	1
28	1
29	1
30	1
31	1

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	99	1	0	0
2	99	1	0	0
3	99	1	0	0
4	99	1	0	0
5	98	2	0	0
6	98	2	0	0
7	98	2	0	0
8	98	2	0	0
9	98	2	0	0
10	98	2	0	0
11	96	3	1	0
12	96	3	1	0
13	96	3	1	0
14	96	3	1	0
15	95	4	1	0
16	95	4	1	0
17	95	4	1	0
18	93	5	2	0
19	93	5	2	0
20	93	5	2	0
21	92	6	2	0
22	92	6	2	0
23	91	7	2	0
24	90	8	2	0
25	88	9	3	0
26	88	9	3	0
27	86	10	3	1
28	85	11	3	1
29	83	12	4	1
30	82	13	4	1
31	80	14	5	1

	Avg high (°C)	Avg low (°C)
1	34	17
2	34	17
3	34	17
4	34	17
5	35	17
6	35	17
7	35	17
8	35	18
9	35	18
10	35	18
11	35	18
12	35	18
13	35	18
14	35	18
15	35	18
16	36	18
17	36	18
18	36	19
19	36	19
20	36	19
21	36	19
22	36	19
23	36	19
24	36	19
25	36	19
26	37	20
27	37	20
28	37	20
29	37	20
30	37	20
31	37	20

	Clearer (%)	Cloudier (%)
1	87	13
2	88	12
3	88	12
4	89	11
5	89	11
6	89	11
7	89	11
8	89	11
9	90	10
10	90	10
11	90	10
12	90	10
13	90	10
14	90	10
15	90	10
16	90	10
17	90	10
18	90	10
19	90	10
20	90	10
21	90	10
22	90	10
23	91	9
24	91	9
25	91	9
26	91	9
27	91	9
28	91	9
29	91	9
30	92	8
31	92	8

	Rain chance (%)
1	1
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	1
24	1
25	1
26	1
27	1
28	1
29	1
30	1
31	1

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	99	1	0	0
2	99	1	0	0
3	99	1	0	0
4	99	1	0	0
5	98	2	0	0
6	98	2	0	0
7	98	2	0	0
8	98	2	0	0
9	98	2	0	0
10	98	2	0	0
11	96	3	1	0
12	96	3	1	0
13	96	3	1	0
14	96	3	1	0
15	95	4	1	0
16	95	4	1	0
17	95	4	1	0
18	93	5	2	0
19	93	5	2	0
20	93	5	2	0
21	92	6	2	0
22	92	6	2	0
23	91	7	2	0
24	90	8	2	0
25	88	9	3	0
26	88	9	3	0
27	86	10	3	1
28	85	11	3	1
29	83	12	4	1
30	82	13	4	1
31	80	14	5	1