Mazatlán weather in August

August in Mazatlán: sweltering, soaked, with clean air — fine if you can take 21 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Mazatlán🇲🇽 Mexico · Baja & Northern Mexico · Beach71
  1. 91Jan
  2. 90Feb
  3. 94Mar
  4. 96Apr
  5. 95May
  6. 88Jun
  7. 80Jul
  8. 71Aug
  9. 74Sep
  10. 83Oct
  11. 93Nov
  12. 92Dec

#12 of 12 months in Mazatlán · #919 of 1413 destinations to visit in August · comfort 71/100 (tier B)

Days
34°C
Nights
26°C
Wet days
21
Sun
10 h
Humidity
84%
Daylight
13 h
Mazatlán, Mexico
Photo: Ernesto FC · Pexels

Traveller notes on Mazatlán in August

Other months in Mazatlán

Forum posters consistently rate November as one of Mazatlan's best months, some rating it even nicer than February, with warm days, warm evenings and humidity finally easing off after running high most of the year. Posters do flag that hurricane season technically extends into November, recommending keeping an eye on tropical weather updates and having travel insurance in place just in case. Posters cite the eight-month dry stretch from November through June as averaging only about 4.4 inches of rain total, underscoring how reliably dry this window runs. Posters generally rate November as close to perfect for Mazatlan, pairing great weather with lower crowds and a town gearing up for the holiday season.
Tripadvisor community · November · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe early May as close to ideal - daytime temperatures typically 80-90F, clear skies, essentially no rain and few bugs, with evenings called genuinely perfect. Posters note February through May counts as an almost completely rain-free stretch (barely a tenth of an inch of precipitation a month), and locals reportedly run an informal betting pool each year on which day the rainy season's first real storm lands - nobody who actually lives in Mazatlan picks a date before mid-June. Beyond the weather, posters call May a noticeably quiet month for foreign tourists specifically, though weekend visitor numbers from elsewhere in Mexico have picked up in recent years thanks to improved highway access.
Tripadvisor community · May · 1 month ago · Read more on Tripadvisor ↗

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Mazatlán climate normals — August

Daytime high34°C / 93°F🔥 sweltering
Nighttime low26°C / 79°F
Feels like (high)41°C / 106°F
Sea temperature32°C / 89°F♨️ bath-warm
Rainfall210 mm / 8.2 in⛈ soaked
Rainy days21 days
Humidity84%💦 very humid
Dew point25°C / 77°F
Sunshine10 h/day
Daylight12.9 h
Wind11 km/h / 7 mph
Air quality (US AQI)36🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Mazatlán in August

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Quietschool holidays in 3 of the markets that fill it, one of its worst months for weather(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Mazatlán's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Toughest weatherMazatlán's weather peaks March–May, best around April.

August coincides with Pacific hurricane season.

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Best weatherFair weatherToughest weather

What's on in Mazatlán in August

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Hazard

    Pacific hurricane season

    15 May – 30 Nov

    The eastern Pacific season runs from mid-May, and the storms that matter here come up from the south in September and October. Most years the city gets rain and swell rather than a landfall. Source ↗

  • Season

    Wet season

    MonsoonRisk

    21 rainy days and about 210 mm in the month — the real kind of rainy season, not afternoon showers.

    from the climate normals

What's on around the world in August →

Where is Mazatlán?

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Mazatlán in August — FAQ

Is August a good time to visit Mazatlán?
August in Mazatlán: sweltering, soaked, with clean air — fine if you can take 21 rainy days. It ranks #12 of 12 months for Mazatlán on SeasonMap's comfort score (71/100).
What is the weather like in Mazatlán in August?
In August, Mazatlán averages a daily high of 33.9°C and a low of 25.9°C, with about 209.5 mm of rain over roughly 21.4 rainy days.
What is the air quality in Mazatlán in August?
Mazatlán has a mean US Air Quality Index of about 36 in August.