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
#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

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.
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.
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Mazatlán climate normals — August
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)
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.
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 NovThe 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
MonsoonRisk21 rainy days and about 210 mm in the month — the real kind of rainy season, not afternoon showers.
from the climate normals
Where is Mazatlán?
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.