AI-generatedGuaymas at a glance
- Best time
- Mar – Jun, Oct – Nov
- Warmest month
- Aug · 36°
- Warmest sea
- Aug · 30.3°
- Sunshine a year
- 3,350 h
- Rain a year
- 142 mm
- Climate
- Hot desert
- Time zone
- UTC−7
- Elevation
- 18 m
Climate in Guaymas
Guaymas has a hot desert climate with sunshine almost every day and hardly any rain. August is the warmest month with average highs of 36 °C, while January is the coolest at 23 °C. With around 3,350 hours of sunshine a year, Guaymas is very sunny; May is the sunniest month with 11.5 hours a day.
Holiday weather through the year
Best time to visit Guaymas
The best time to visit Guaymas is from March to June and from October to November. For a beach holiday – sea from 21 °C, warm and mostly dry – go from May to November. For sightseeing, day trips and hiking, conditions are most comfortable from November to March. From June to September it can get very hot, with highs of up to 36 °C. The wettest month is September with 59 mm of precipitation.
Guaymas through the seasons
How the weather changes over the seasons, with averages for each.
Guaymas in spring
Mar – May
Excellent
- 26–32 °C by day
- Sea 21 °C
- 10.4 h of sun a day
- 1 rainy day in all
Guaymas in summer
Jun – Aug
Good
- 34–36 °C by day
- Sea 29 °C
- 10.0 h of sun a day
- 7 rainy days in all
Guaymas in autumn
Sep – Nov
Excellent
- 28–34 °C by day
- Sea 27 °C
- 8.5 h of sun a day
- 9 rainy days in all
Guaymas in winter
Dec – Feb
Good
- 23–24 °C by day
- Sea 19 °C
- 7.8 h of sun a day
- 3 rainy days in all
Which month for what?
Beach & swimming
May – Nov
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Nov – Mar
15–28 °C and not too much rain
Peak heat
Jun – Sep
Highs of 33 °C or more
Find your perfect month
Tell us what you like and we rate every month in Guaymas for you.
Your best months: May, October – November
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Excellent
Best time to visit: March – June, October – November
October is in the hurricane season Hurricane season
Where to go in OctoberSea temperature in October
Good forBeach & swimming
Keep in mindStorm season
A typical day in October
- Morning, 08:00: about 25°
- Midday, 13:00: about 32°
- Afternoon, 16:00: about 31°
- Evening, 20:00: about 27°
- Night, 23:00: about 25°
06:2317:55
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 06:08–06:54 · evening 17:24–18:10
- Blue hour
- Morning 05:59–06:08 · 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 Guaymas compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 33° at the start of the month to 30° at the end. The sea cools from 29° to 26°. The days get 0.8 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 33° | 30° |
| Night-time low | 24° | 20° |
| Sea | 29° | 26° |
| Daylight | 11.9 h | 11.2 h |
What is the weather like in Guaymas in October?
In October, Guaymas is hot: daytime highs average 32 °C, and even at night it stays warm at around 22 °C. The sea averages 27.9 °C – lovely and warm for swimming. With around 9.0 hours of sunshine a day, there is plenty of sun. Rain is rare: about 2 days bring 17 mm in total. On about 23 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is an excellent month for a holiday in Guaymas.
More details for October
- Daylight
- 11 h 33 min06:23 – 17:55
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 17 daysdew point 18 °C or moreAll months
- Wind
- 19 km/haverage daily peakAll months
- Cloud cover
- 17 %on averageAll months
- Hot days
- 23 days30 °C or moreAll months
- Time zone
- UTC−7offset from UTC
How the score comes together
- Temperatureweight 35 %87 %
- Seaweight 25 %100 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
Compare two months in Guaymas
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
October and May bring similar holiday weather to Guaymas (score 96 and 96). Daytime highs are about the same. The sea is 4 °C cooler in May. May has 2 fewer rainy days. The sun shines 3 hours longer a day in May.
| Month | October | May |
|---|---|---|
| Holiday weather score | 96 | 96 |
| Daytime high | 32° | 32° |
| Night-time low | 22° | 21° |
| Sea | 27.9° | 23.7° |
| Sunshine | 9.0 h | 11.5 hbetter |
| Rainy days | 2 | 0better |
| Rainfall | 17 mm | 0 mmbetter |
| Muggy days | 17 | 4better |
Based on the climate averages 1996–2025.
Guaymas month by month
The typical weather for every month at a glance.
65January23° · Sea 18° · 7.8 h
In January, Guaymas is warm: daytime highs average 23 °C, and nights cool down to about 13 °C. The sea averages 18.3 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7.8 hours a day. It hardly ever rains. All in all, January is a good month for a holiday in Guaymas.
Guaymas in January69February24° · Sea 18° · 8.1 h
In February, Guaymas is warm: daytime highs average 24 °C, and nights cool down to about 13 °C. The sea averages 18.3 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 8.1 hours a day. It hardly ever rains. All in all, February is a good month for a holiday in Guaymas.
Guaymas in February82March26° · Sea 19° · 9.3 h
In March, Guaymas is warm: daytime highs average 26 °C, and nights cool down to about 15 °C. The sea averages 18.9 °C – bracing, so a wetsuit helps for longer swims. With around 9.3 hours of sunshine a day, there is plenty of sun. It hardly ever rains. All in all, March is an excellent month for a holiday in Guaymas.
Guaymas in March89April29° · Sea 21° · 10.5 h
In April, Guaymas is hot: daytime highs average 29 °C, and nights cool down to about 18 °C. The sea averages 20.8 °C – refreshing for a swim. With around 10.5 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 9 days the thermometer climbs to 30 °C or more. All in all, April is an excellent month for a holiday in Guaymas.
Guaymas in April96May32° · Sea 24° · 11.5 h
In May, Guaymas is hot: daytime highs average 32 °C, and even at night it stays warm at around 21 °C. The sea averages 23.7 °C – pleasant for swimming. With around 11.5 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, May is an excellent month for a holiday in Guaymas.
Guaymas in May84June34° · Sea 27° · 11.2 h
In June, Guaymas is very hot: daytime highs average 34 °C, and even at night it stays warm at around 25 °C. The sea averages 27.0 °C – lovely and warm for swimming. With around 11.2 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, June is an excellent month for a holiday in Guaymas.
Guaymas in June77July36° · Sea 29° · 9.4 h
In July, Guaymas is very hot: daytime highs average 36 °C, and even at night it stays warm at around 28 °C. The sea averages 29.3 °C – almost as warm as a bath. With around 9.4 hours of sunshine a day, there is plenty of sun. Rain is rare: about 2 days bring 9 mm in total. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. All in all, July is a good month for a holiday in Guaymas.
Guaymas in July76August36° · Sea 30° · 9.3 h
In August, Guaymas is very hot: daytime highs average 36 °C, and even at night it stays warm at around 28 °C. The sea averages 30.3 °C – almost as warm as a bath. With around 9.3 hours of sunshine a day, there is plenty of sun. Rain is rare: about 4 days bring 22 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 a good month for a holiday in Guaymas.
Guaymas in August80September34° · Sea 30° · 8.7 h
In September, Guaymas is very hot: daytime highs average 34 °C, and even at night it stays warm at around 26 °C. The sea averages 30.1 °C – almost as warm as a bath. The sun shines for around 8.7 hours a day. Rain falls on about 6 days, adding up to 59 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 an excellent month for a holiday in Guaymas.
Guaymas in September96October32° · Sea 28° · 9.0 h
In October, Guaymas is hot: daytime highs average 32 °C, and even at night it stays warm at around 22 °C. The sea averages 27.9 °C – lovely and warm for swimming. With around 9.0 hours of sunshine a day, there is plenty of sun. Rain is rare: about 2 days bring 17 mm in total. On about 23 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is an excellent month for a holiday in Guaymas.
Guaymas in October94November28° · Sea 23° · 7.9 h
In November, Guaymas is hot: daytime highs average 28 °C, and nights cool down to about 17 °C. The sea averages 23.3 °C – pleasant for swimming. The sun shines for around 7.9 hours a day. It hardly ever rains. On about 6 days the thermometer climbs to 30 °C or more. All in all, November is an excellent month for a holiday in Guaymas.
Guaymas in November71December23° · Sea 20° · 7.4 h
In December, Guaymas is warm: daytime highs average 23 °C, and nights cool down to about 13 °C. The sea averages 19.9 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7.4 hours a day. It hardly ever rains. All in all, December is a good month for a holiday in Guaymas.
Guaymas 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 Guaymas
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)
WarmOctober: nights around 22°. Tropical nights: a fan or air conditioning helps. Muggy on about 17 days (dew point 18 °C or more).
The coolest nights are in January (13°), the warmest in August (28°). Tropical nights of 20 °C and more are the rule from May to October; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) from March to April and in November. It is muggy (dew point 18 °C or more) on about 135 days a year, mostly from June to October.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 65 | 23° | 13° | 18.3° | 7.8 h | 1 | 6 |
| FebruaryFeb | 69 | 24° | 13° | 18.3° | 8.1 h | 1 | 6 |
| MarchMar | 82 | 26° | 15° | 18.9° | 9.3 h | 1 | 4 |
| AprilApr | 89 | 29° | 18° | 20.8° | 10.5 h | 0 | 1 |
| MayMay | 96 | 32° | 21° | 23.7° | 11.5 h | 0 | 0 |
| JuneJun | 84 | 34° | 25° | 27.0° | 11.2 h | 0 | 2 |
| JulyJul | 77 | 36° | 28° | 29.3° | 9.4 h | 2 | 9 |
| AugustAug | 76 | 36° | 28° | 30.3° | 9.3 h | 4 | 22 |
| SeptemberSep | 80 | 34° | 26° | 30.1° | 8.7 h | 6 | 59 |
| OctoberOct | 96 | 32° | 22° | 27.9° | 9.0 h | 2 | 17 |
| NovemberNov | 94 | 28° | 17° | 23.3° | 7.9 h | 1 | 8 |
| DecemberDec | 71 | 23° | 13° | 19.9° | 7.4 h | 1 | 7 |
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
27.92° N, 110.90° W · 18 m · America/Hermosillo
Sea temperature
Sea temperature in Guaymas
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 26.6 – 29.0 °C
Swimming season: Apr – Nov
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Guaymas ranges from 18.3 °C in January to 30.3 °C in August. It is warm enough for a comfortable swim (20 °C and more) from April to November.
The sea temperature varies from year to year: in August, eight out of ten years were between 29.2 and 31.4 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 18.3° | 17.2° | 19.4° | fresh |
| FebruaryFeb | 18.3° | 16.5° | 19.8° | fresh |
| MarchMar | 18.9° | 17.7° | 20.3° | fresh |
| AprilApr | 20.8° | 19.4° | 21.6° | refreshing |
| MayMay | 23.7° | 22.7° | 24.7° | pleasant |
| JuneJun | 27.0° | 25.9° | 28.2° | warm |
| JulyJul | 29.3° | 27.9° | 30.7° | very warm |
| AugustAug | 30.3° | 29.2° | 31.4° | very warm |
| SeptemberSep | 30.1° | 29.3° | 30.9° | very warm |
| OctoberOct | 27.9° | 26.6° | 29.0° | warm |
| NovemberNov | 23.3° | 21.5° | 24.6° | pleasant |
| DecemberDec | 19.9° | 18.3° | 21.4° | fresh |
Sunshine
Sunshine hours in Guaymas
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 9.0 of 11.5 hours of daylight in Guaymas, 78 % 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 Guaymas: 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, Guaymas has about 2 rainy days with 17 mm of rain in total.
UV index
UV index in Guaymas
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 Guaymas
How breezy and how cloudy Guaymas 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 Guaymas typically peaks at 19 km/h during the day: Beaufort 3, gentle breeze.
Breezy months for windsurfing and kiting
From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting: Feb – Sep.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 17 % of the sky over Guaymas: mostly clear, with about 9.0 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 Guaymas
How often the day gets hot in Guaymas (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, Guaymas has about 23 hot days, with an average daytime high of 32 °C: hot and muggy. Plan outdoor activities for the morning and evening, drink a lot and take breaks in the cool.
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 Guaymas
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Guaymas 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.
Guaymas has its best school-holiday weather during October half-term (score 96) and its weakest during the Christmas holidays (score 68).
- 87
Easter holidays
Mar – Apr
Excellent
- 28 °C by day
- Sea 20 °C
- 10.1 h of sun a day
- 0 rainy days a month
- 94
May half-term
May – Jun
Excellent
- 32 °C by day
- Sea 24 °C
- 11.4 h of sun a day
- 0 rainy days a month
Good for: Beach & swimming
Keep in mind: Storm season
- 76
Summer holidays
Jul – Aug
Good
- 36 °C by day
- Sea 30 °C
- 9.3 h of sun a day
- 3 rainy days a month
Good for: Beach & swimming
Keep in mind: Peak heat, Storm season
- 96
October half-term
Oct
ExcellentBest holidays
- 32 °C by day
- Sea 28 °C
- 9.0 h of sun a day
- 2 rainy days a month
Good for: Beach & swimming
Keep in mind: Storm season
- 68
Christmas holidays
Dec – Jan
Good
- 23 °C by day
- Sea 19 °C
- 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 15 min
- Distance
- 8,890 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
Guaymas 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
Guaymas compared
Put Guaymas side by side with another destination.
Guaymas vs San Carlos
In October the holiday weather in Guaymas and San Carlos is about equally good (score 96 vs 95). During the day it is about as warm in San Carlos as in Guaymas. The sea is about equally warm.
| in October | Guaymas | San Carlos |
|---|---|---|
| Holiday weather score | 96 | 95 |
| Daytime high | 32° | 32° |
| Sea | 28° | 28° |
| Sunshine | 9 h | 9 h |
| Rainy days | 2 | 2 |
| Best time | Mar – Jun, Oct – Nov | Mar – Jun, Oct – Nov |
Through the year
Best places in the country
Mexico in October: the best places
In October, Guaymas ranks 10 among the 31 nearest destinations in this country.
- Loreto30°29°100
- 2Puerto Peñasco30°27°100
- 3Todos Santos31°28°100
- 4San Felipe30°27°100
- 5Ensenada24°19°98
- 6Durango26°98
- 7Valle de Guadalupe25°97
- 8Tecate26°97
- 10GuaymasThis page32°28°96
Places nearby
Near Guaymas
Other destinations close by.
Places with a similar climate
Places with a climate like Guaymas
Destinations whose weather through the year is closest to Guaymas's – good alternatives.
Frequently asked questions about Guaymas
When is the best time to visit Guaymas?
The best time to visit Guaymas is from March to June and from October to November. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Guaymas?
The sea temperature in Guaymas ranges from 18.3 °C in January to 30.3 °C in August. It is warm enough for a comfortable swim (20 °C and more) from April to November.
Can you swim in Guaymas in October?
Yes. In October the sea averages 27.9 °C – lovely and warm for swimming.
What is the warmest month in Guaymas?
August is the warmest month, with average highs of 36 °C and nights around 28 °C. January is the coolest month at 23 °C.
When does it rain most in Guaymas?
The wettest month is September with 59 mm of precipitation. The driest month is May with 0 mm.
How many hours of sunshine does Guaymas get?
Guaymas gets around 3,350 hours of sunshine a year. The sunniest month is May with 11.5 hours a day; in December there are 7.4 hours a day.
What time zone is Guaymas in?
Guaymas is on UTC−7 all year.
How long is the flight from London to Guaymas?
A nonstop flight from London to Guaymas takes about 11 h 15 min, for a straight-line distance of about 8,890 km.
When is hurricane season in Guaymas?
Guaymas 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 Guaymas?
Guaymas has its best school-holiday weather during October half-term (score 96) and its weakest during the Christmas holidays (score 68). Holiday ratings (0–100): Easter holidays 87, May half-term 94, summer holidays 76, October half-term 96, Christmas holidays 68.