Huatulco weather in August
August in Huatulco: sweltering, soaked, with clean air — fine if you can take 25 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#9 of 12 months in Huatulco · #1005 of 1413 destinations to visit in August · comfort 65/100 (tier C)
- Days
- 31°C
- Nights
- 23°C
- Wet days
- 25
- Sun
- 9.7 h
- Humidity
- 85%
- Daylight
- 13 h

Traveller notes on Huatulco in August
Forum posters describe August as squarely within the Pacific coast's wet season, with rain that typically comes and goes quickly - though posters note a full day of steady rain is possible on occasion - and Pacific hurricane season (running into October) a real background factor. Posters describe May through August generally as hot and humid, with rain more commonly falling at night and staying warm rather than cold. Posters report the rainy season actually brings real upsides: lush, green scenery and fewer international visitors, though August itself sees more domestic Mexican vacationers filling the beaches than the quieter months around it. Posters consistently note that while August brings somewhat more rain than July, it rarely interferes with a day's planned activities.
Other months in Huatulco
Regulars are specific the landscape stays visibly green here from the rainy season just ending, humidity itself running a touch higher than December even as this counts as many locals' pick for the nicest month of the year. Our row backs that hot, genuinely wet read, 31.1C reading as a scorching 37C, over 21.1C nights feeling 24C, with a substantial 86.3mm of rain across 15 days and humidity at 83 percent. Regulars are consistent the ocean itself runs calmer by this point with hurricane season now over, warm, comfortable days and evenings the common report despite the real remaining rain. Fewer tourists than peak season remains a genuine practical upside. The sea sits at a bath-warm 29.4C. The record: 10.3 hours of sun, an 8.5 kph wind and AQI 25.
April sits squarely in the dry season here, and regulars are unambiguous: hot, humid, virtually no rain, hotter than March by most accounts. Our row backs that at 19.5mm across 5.3 days, with 32.5C reading as a real 37C at 69 percent humidity. The one thing worth timing around is not weather but the calendar - the town fills for Easter, and once Easter Sunday passes the vacationing crowd almost disappears as Mexican visitors head back to work, leaving a quieter beach that only gets hotter from there. The sea stays warm and inviting throughout at 28.4C, good for fishing as well as swimming. Nights hold 21.8C. The record: 11.4 hours of sun, a 14.4 kph wind and AQI 45.
Regulars call January and February about as close to perfect as this coast gets, and the reason they give for January specifically is what it lacks. It does not rain - the wet season holds off until May - and wind is not the problem here that it is on the Caribbean side in the same weeks, which is the common reason people end up comparing the two coasts at all. Locals asked for the best month say January: the fishing is at its best and the whales are about. By mid-March the humidity climbs and the heat turns oppressive for northern visitors, so this is the cool end of the good run. Our row gives 30.9C days against 19.9C nights, an eleven-degree swing that makes the evenings genuinely cool. The record: 27.9mm across 5.1 days, 10.5 hours of sun, a 10.6 kph wind and a 27.5C sea.
Regulars describe mid to late December as all but guaranteed dry: low 90s Fahrenheit by day, low 70s in the evening, usually a breeze and hardly ever rain. Our row matches closely at 30.8C over 20.1C with 19.4mm across 4.4 precipitation days. The breeze is gentler than the reputation, 9.1 kph, which is part of why the humidity tells: 78 percent turns that 30.8C into a felt 36C. Their booking advice is about the calendar rather than the weather - the month gets busier as it goes and Christmas into New Year is the peak, so early to mid December buys the same conditions at lower prices and with fewer people on the bays. The record: 10.3 hours of sun, a 28.2C sea and AQI 25, among the cleanest air here.
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Huatulco climate normals — August
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Huatulco 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.
Shoulder seasonschool holidays in 3 of the markets that fill it, an ordinary month(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Huatulco'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).
Fair weatherHuatulco's best weather comes in February, March and December — separate windows, not one continuous season.
Best weatherFair weatherToughest weather
What's on in Huatulco in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Hazard
Pacific hurricane season
15 May – 30 NovThe eastern Pacific season opens a fortnight before the Atlantic one. Storms here usually track away from the coast, but the ones that don't come ashore fast on this stretch of Oaxaca, and September is the peak. Source ↗
- Nature
Olive ridley nesting
1 Jul – 15 Dec · usuallyTurtle nestingOlive ridleys nest along the beaches west of the bays through the wet half of the year, and the camps run hatchling releases at dusk from about September. The big arribadas happen further up the coast.
- Season
Wet season
MonsoonRisk25 rainy days and about 299 mm in the month — the real kind of rainy season, not afternoon showers.
from the climate normals
Nearby, and something's on
Within 300 km of Huatulco — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Huatulco?
Huatulco in August — FAQ
- Is August a good time to visit Huatulco?
- August in Huatulco: sweltering, soaked, with clean air — fine if you can take 25 rainy days. It ranks #9 of 12 months for Huatulco on SeasonMap's comfort score (65/100).
- What is the weather like in Huatulco in August?
- In August, Huatulco averages a daily high of 31.4°C and a low of 23°C, with about 298.8 mm of rain over roughly 25.2 rainy days.
- What is the air quality in Huatulco in August?
- Huatulco has a mean US Air Quality Index of about 32 in August.
Within 300 km: Puerto Escondido's Olive ridley arribadas around 1 Jul – 15 Dec, and Oaxaca's Afternoon storm season on 1 Jun – 30 Sep.