AI-generatedHermosillo at a glance
- Best time
- Nov – Mar
- Warmest month
- Jun · 40°
- Sunshine a year
- 3,320 h
- Rain a year
- 204 mm
- Climate
- Hot desert
- Time zone
- UTC−7
- Elevation
- 202 m
Climate in Hermosillo
Hermosillo has a hot desert climate with sunshine almost every day and hardly any rain. June is the warmest month with average highs of 40 °C, while December is the coolest at 25 °C. With around 3,320 hours of sunshine a year, Hermosillo is very sunny; May is the sunniest month with 11.6 hours a day.
Holiday weather through the year
Best time to visit Hermosillo
The best time to visit Hermosillo is from November to March. For sightseeing, day trips and hiking, conditions are most comfortable from December to February. From April to October it can get very hot, with highs of up to 40 °C. The wettest month is September with 50 mm of precipitation.
Hermosillo through the seasons
How the weather changes over the seasons, with averages for each.
Hermosillo in spring
Mar – May
Good
- 30–37 °C by day
- 10.5 h of sun a day
- 1 rainy day in all
Hermosillo in summer
Jun – Aug
Fair
- 39–40 °C by day
- 9.7 h of sun a day
- 19 rainy days in all
Hermosillo in autumn
Sep – Nov
Good
- 29–37 °C by day
- 8.4 h of sun a day
- 10 rainy days in all
Hermosillo in winter
Dec – Feb
Excellent
- 25–26 °C by day
- 7.7 h of sun a day
- 4 rainy days in all
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Dec – Feb
15–28 °C and not too much rain
Peak heat
Apr – Oct
Highs of 33 °C or more
Find your perfect month
Tell us what you like and we rate every month in Hermosillo for you.
Your best months: December – February
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Fair
Best time to visit: November – March
October is in the hurricane season Hurricane season
Keep in mindPeak heatStorm season
A typical day in October
- Morning, 08:00: about 24°
- Midday, 13:00: about 34°
- Afternoon, 16:00: about 33°
- Evening, 20:00: about 26°
- Night, 23:00: about 23°
06:2417:55
Warm enough for a T-shirt in the evening.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 06:09–06:56 · evening 17:23–18:10
- Blue hour
- Morning 06:00–06:09 · evening 18:10–18:19
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Hermosillo compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 36° at the start of the month to 32° at the end. The days get 0.8 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 36° | 32° |
| Night-time low | 21° | 16° |
| Daylight | 11.9 h | 11.1 h |
What is the weather like in Hermosillo in October?
In October, Hermosillo is very hot: daytime highs average 34 °C, and nights cool down to about 18 °C. The sun shines for around 8.9 hours a day. Rain is rare: about 2 days bring 20 mm in total. On about 26 days the thermometer climbs to 30 °C or more. All in all, October is a so-so month for a holiday in Hermosillo.
More details for October
- Daylight
- 11 h 31 min06:24 – 17:55
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 4 daysdew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 17 %on averageAll months
- Hot days
- 26 days30 °C or moreAll months
- Time zone
- UTC−7offset from UTC
How the score comes together
- Temperatureweight 50 %9 %
- Sunshineweight 20 %98 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
Compare two months in Hermosillo
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
February has the better holiday weather in Hermosillo: score 97 against 54. In February, days are 8 °C cooler than in October. The sun shines an hour less a day in February.
| Month | October | February |
|---|---|---|
| Holiday weather score | 54 | 97better |
| Daytime high | 34° | 26° |
| Night-time low | 18° | 10° |
| Sunshine | 8.9 hbetter | 8.0 h |
| Rainy days | 2 | 2 |
| Rainfall | 20 mm | 10 mmbetter |
| Muggy days | 4 | 0better |
Based on the climate averages 1996–2025.
Hermosillo month by month
The typical weather for every month at a glance.
96January25° · 7.7 h
In January, Hermosillo is warm: daytime highs average 25 °C, and nights cool down to about 9 °C. The sun shines for around 7.7 hours a day. It hardly ever rains. All in all, January is an excellent month for a holiday in Hermosillo.
Hermosillo in January97February26° · 8.0 h
In February, Hermosillo is warm: daytime highs average 26 °C, and nights cool down to about 10 °C. The sun shines for around 8.0 hours a day. It hardly ever rains. On about 6 days the thermometer climbs to 30 °C or more. All in all, February is an excellent month for a holiday in Hermosillo.
Hermosillo in February83March30° · 9.3 h
In March, Hermosillo is hot: daytime highs average 30 °C, and nights cool down to about 12 °C. With around 9.3 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 16 days the thermometer climbs to 30 °C or more. All in all, March is an excellent month for a holiday in Hermosillo.
Hermosillo in March62April33° · 10.6 h
In April, Hermosillo is very hot: daytime highs average 33 °C, and nights cool down to about 15 °C. With around 10.6 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 24 days the thermometer climbs to 30 °C or more. All in all, April is a good month for a holiday in Hermosillo.
Hermosillo in April50May37° · 11.6 h
In May, Hermosillo is very hot: daytime highs average 37 °C, and nights cool down to about 18 °C. With around 11.6 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 30 days the thermometer climbs to 30 °C or more. All in all, May is a so-so month for a holiday in Hermosillo.
Hermosillo in May50June40° · 11.2 h
In June, Hermosillo is very hot: daytime highs average 40 °C, and even at night it stays warm at around 23 °C. With around 11.2 hours of sunshine a day, there is plenty of sun. It hardly ever rains. The thermometer climbs to 30 °C or more every day. All in all, June is a so-so month for a holiday in Hermosillo.
Hermosillo in June42July40° · 9.0 h
In July, Hermosillo is very hot: daytime highs average 40 °C, and even at night it stays warm at around 26 °C. With around 9.0 hours of sunshine a day, there is plenty of sun. Rain falls on about 8 days, adding up to 40 mm. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. All in all, July is a so-so month for a holiday in Hermosillo.
Hermosillo in July38August39° · 8.8 h
In August, Hermosillo is very hot: daytime highs average 39 °C, and even at night it stays warm at around 26 °C. The sun shines for around 8.8 hours a day. Rain is frequent, with about 10 rainy days and 47 mm in total. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. All in all, August is not an ideal month for a holiday in Hermosillo.
Hermosillo in August42September37° · 8.5 h
In September, Hermosillo is very hot: daytime highs average 37 °C, and even at night it stays warm at around 24 °C. The sun shines for around 8.5 hours a day. Rain falls on about 7 days, adding up to 50 mm. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a so-so month for a holiday in Hermosillo.
Hermosillo in September54October34° · 8.9 h
In October, Hermosillo is very hot: daytime highs average 34 °C, and nights cool down to about 18 °C. The sun shines for around 8.9 hours a day. Rain is rare: about 2 days bring 20 mm in total. On about 26 days the thermometer climbs to 30 °C or more. All in all, October is a so-so month for a holiday in Hermosillo.
Hermosillo in October83November29° · 7.9 h
In November, Hermosillo is hot: daytime highs average 29 °C, and nights cool down to about 13 °C. The sun shines for around 7.9 hours a day. It hardly ever rains. On about 13 days the thermometer climbs to 30 °C or more. All in all, November is an excellent month for a holiday in Hermosillo.
Hermosillo in November95December25° · 7.4 h
In December, Hermosillo is warm: daytime highs average 25 °C, and nights cool down to about 9 °C. The sun shines for around 7.4 hours a day. It hardly ever rains. All in all, December is an excellent month for a holiday in Hermosillo.
Hermosillo in DecemberClimate in detail
Year & climate table
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Hermosillo
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cool 8–15°
- Pleasant 15–20°
- Warm 20–24°
- Hot 24° and more
- muggy month (15+ muggy days)
PleasantOctober: nights around 18°. Ideal for sleeping, often with the window open. Muggy on about 4 days (dew point 18 °C or more).
The coolest nights are in January (9°), the warmest in July (26°). Tropical nights of 20 °C and more are the rule from June to September; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) from April to May and in October. It is muggy (dew point 18 °C or more) on about 76 days a year, mostly from July to September.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 96 | 25° | 9° | 7.7 h | 1 | 8 |
| FebruaryFeb | 97 | 26° | 10° | 8.0 h | 2 | 10 |
| MarchMar | 83 | 30° | 12° | 9.3 h | 1 | 5 |
| AprilApr | 62 | 33° | 15° | 10.6 h | 0 | 1 |
| MayMay | 50 | 37° | 18° | 11.6 h | 0 | 0 |
| JuneJun | 50 | 40° | 23° | 11.2 h | 2 | 4 |
| JulyJul | 42 | 40° | 26° | 9.0 h | 8 | 40 |
| AugustAug | 38 | 39° | 26° | 8.8 h | 10 | 47 |
| SeptemberSep | 42 | 37° | 24° | 8.5 h | 7 | 50 |
| OctoberOct | 54 | 34° | 18° | 8.9 h | 2 | 20 |
| NovemberNov | 83 | 29° | 13° | 7.9 h | 1 | 8 |
| DecemberDec | 95 | 25° | 9° | 7.4 h | 2 | 10 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
29.09° N, 110.97° W · 202 m · America/Hermosillo
Sunshine
Sunshine hours in Hermosillo
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 8.9 of 11.5 hours of daylight in Hermosillo, 77 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain
Rain in Hermosillo: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Hermosillo has about 2 rainy days with 20 mm of rain in total.
UV index
UV index in Hermosillo
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 7 · highSeek shade around midday; sunscreen SPF 30+, hat and sunglasses.
The sun is strongest in June (UV 12).
Minutes until sunburn in October
- Very fair skin
- about 20 min
- Fair skin
- about 25 min
- Light brown skin
- about 35 min
- Olive skin
- about 45 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind & clouds
Wind and clouds in Hermosillo
How breezy and how cloudy Hermosillo is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Hermosillo typically peaks at 15 km/h during the day: Beaufort 3, gentle breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 17 % of the sky over Hermosillo: mostly clear, with about 8.9 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat & humidity
Heat and humidity in Hermosillo
How often the day gets hot in Hermosillo (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Hermosillo has about 26 hot days, with an average daytime high of 34 °C: often hot. Avoid the midday sun, look for shade and drink plenty.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Planning a trip to Hermosillo
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Hermosillo in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Hermosillo has its best school-holiday weather during the Christmas holidays (score 96) and its weakest during the summer holidays (score 39).
- 68
Easter holidays
Mar – Apr
Good
- 32 °C by day
- 10.2 h of sun a day
- 0 rainy days a month
Keep in mind: Peak heat
- 50
May half-term
May – Jun
Fair
- 37 °C by day
- 11.5 h of sun a day
- 0 rainy days a month
Keep in mind: Peak heat, Storm season
- 39
Summer holidays
Jul – Aug
Poor
- 39 °C by day
- 8.9 h of sun a day
- 9 rainy days a month
Keep in mind: Peak heat, Storm season
- 54
October half-term
Oct
Fair
- 34 °C by day
- 8.9 h of sun a day
- 2 rainy days a month
Keep in mind: Peak heat, Storm season
- 96
Christmas holidays
Dec – Jan
ExcellentBest holidays
- 25 °C by day
- 7.6 h of sun a day
- 1 rainy day a month
Good for: Sightseeing & walks
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 11 h 5 min
- Distance
- 8,790 km
- Time zone
- UTC−7
- Jet lag
- About 5 days (8 h west)
Rule of thumb for flying west: for a few days before, stay up a little later, and get afternoon and evening light at your destination.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Good to know: Mexico
- Currency
- Mexican Peso (MXN)
- Language
- Spanish
- Sockets
- Type A, B · 127 V
- Traffic
- Drives on the right
- Dialling code
- +52
- Emergency number
- 911
UK plugs need a travel adapter
Only 127 V: chargers marked 100–240 V work, other devices need a voltage converter.
Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.
Storm season
Hermosillo lies in an area that Eastern Pacific hurricanes can reach. The hurricane season runs from May to November, with most storms from August to September. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January
- February
- March
- April
- May: Season
- June: Season
- July: Season
- August: Peak
- September: Peak
- October: Season
- November: Season
- December
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM, Fiji Meteorological Service); not a forecast.
Compare & alternatives
Compare with another place
Hermosillo compared
Put Hermosillo side by side with another destination.
Hermosillo vs San Carlos
In October San Carlos has the better holiday weather (score 69 vs 54). During the day San Carlos is 2 °C cooler than Hermosillo.
| in October | Hermosillo | San Carlos |
|---|---|---|
| Holiday weather score | 54 | 69 |
| Daytime high | 34° | 32° |
| Sea | no sea nearby | 28° |
| Sunshine | 9 h | 9 h |
| Rainy days | 2 | 2 |
| Best time | Nov – Mar | Mar – Jun, Oct – Nov |
Through the year
Best places in the country
Mexico in October: the best places
In October, Hermosillo ranks 27 among the 31 nearest destinations in this country.
- Loreto30°29°100
- 2Puerto Peñasco30°27°100
- 3San Felipe30°27°100
- 4Todos Santos31°28°100
- 5Ensenada24°19°98
- 6Durango26°98
- 7Valle de Guadalupe25°97
- 8Tecate26°97
- 27HermosilloThis page34°54
Places nearby
Near Hermosillo
Other destinations close by.
Places with a similar climate
Places with a climate like Hermosillo
Destinations whose weather through the year is closest to Hermosillo's – good alternatives.
Frequently asked questions about Hermosillo
When is the best time to visit Hermosillo?
The best time to visit Hermosillo is from November to March. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Hermosillo?
June is the warmest month, with average highs of 40 °C and nights around 23 °C. December is the coolest month at 25 °C.
When does it rain most in Hermosillo?
The wettest month is September with 50 mm of precipitation. The driest month is May with 0 mm.
How many hours of sunshine does Hermosillo get?
Hermosillo gets around 3,320 hours of sunshine a year. The sunniest month is May with 11.6 hours a day; in December there are 7.4 hours a day.
What time zone is Hermosillo in?
Hermosillo is on UTC−7 all year.
How long is the flight from London to Hermosillo?
A nonstop flight from London to Hermosillo takes about 11 h 5 min, for a straight-line distance of about 8,790 km.
When is hurricane season in Hermosillo?
Hermosillo lies in an area that Eastern Pacific hurricanes can reach. The hurricane season runs from May to November, with most storms from August to September. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for Hermosillo?
Hermosillo has its best school-holiday weather during the Christmas holidays (score 96) and its weakest during the summer holidays (score 39). Holiday ratings (0–100): Easter holidays 68, May half-term 50, summer holidays 39, October half-term 54, Christmas holidays 96.