Sayulita (Riviera Nayarit) weather in September
September in Sayulita: sweltering, soaked, with clean air — a gamble, with 26 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#12 of 12 months in Sayulita · #1070 of 1413 destinations to visit in September · comfort 64/100 (tier C)
- Days
- 31°C
- Nights
- 26°C
- Wet days
- 26
- Sun
- 8.8 h
- Humidity
- 82%
- Daylight
- 12 h
Traveller notes on Sayulita in September
Other months in Sayulita
Sayulita's forum draws a real distinction between the two halves of October: the first couple of weeks are still properly rainy season, with high heat, humidity and torrential downpours mostly overnight, while the back half of the month sees the heavy rain largely wind down even though it's still genuinely hot and humid. Posters pointed to late October into early November as a real sweet spot, once the worst of the humidity has broken. Warm, swimmable ocean water year-round is a constant regardless of which half of the month you catch.
Forum posters describe early April as one of the driest, most pleasant stretches of the year - mid-80sF days, mid-to-low-60sF nights, with no rain since the previous October and mosquito numbers correspondingly at their lowest. A cooling ocean breeze in the afternoon means posters recommend packing a light sweatshirt or pants even on an otherwise hot day. Posters contrast April favorably with February, noting shorts and short sleeves work fine in April versus needing light long sleeves and trousers earlier in the dry season. The one clear scheduling warning: Sayulita gets genuinely overwhelmed with domestic tourists during Semana Santa (Easter Holy Week), and posters consistently suggest avoiding that specific week if a quieter April visit is the goal.
Add your own note from Sayulita's card on the map.
Sayulita climate normals — September
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Sayulita in September
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 2 of the markets that fill it, one of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Sayulita'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 weatherSayulita's weather peaks March–May, best around April.
September coincides with Pacific hurricane season.
Best weatherFair weatherToughest weather
What's on in Sayulita in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Hazard
Pacific hurricane season
15 May – 30 NovBanderas Bay is sheltered by the headlands and usually gets swell and rain rather than a landfall, but September storms have taken the beach and the river mouth out before. The bay's shape is not a guarantee. Source ↗
- Nature
Turtle nesting and releases
15 Jul – 15 Dec · usuallyOlive ridleys come ashore on the beaches either side of the point through the second half of the year, and the local camps run hatchling releases at dusk. Peak nesting is late summer, releases run into December.
- Season
Wet season
MonsoonRisk26 rainy days and about 246 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 Sayulita — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Sayulita?
Sayulita in September — FAQ
- Is September a good time to visit Sayulita?
- September in Sayulita: sweltering, soaked, with clean air — a gamble, with 26 rainy days. It ranks #12 of 12 months for Sayulita on SeasonMap's comfort score (64/100).
- What is the weather like in Sayulita in September?
- In September, Sayulita averages a daily high of 30.6°C and a low of 26°C, with about 245.9 mm of rain over roughly 25.7 rainy days.
- What is the air quality in Sayulita in September?
- Sayulita has a mean US Air Quality Index of about 34 in September.
Within 300 km: Puerto Vallarta's Rainy season on 15 Jun – 15 Oct.