Bacalar (Laguna Bacalar) weather in September

September in Bacalar: sweltering, soaked, with clean air — a gamble, with 25 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Bacalar🇲🇽 Mexico · Yucatán & Belize · City57
  1. 79Jan
  2. 80Feb
  3. 76Mar
  4. 72Apr
  5. 66May
  6. 53Jun
  7. 63Jul
  8. 59Aug
  9. 57Sep
  10. 61Oct
  11. 71Nov
  12. 77Dec

#11 of 12 months in Bacalar · #1177 of 1413 destinations to visit in September · comfort 57/100 (tier D)

Days
33°C
Nights
25°C
Wet days
25
Sun
10.3 h
Humidity
86%
Daylight
12 h
Bacalar, Mexico
Photo: Carlos Bedoy · Pexels

Traveller notes on Bacalar in September

Notes from nearby Caye Caulker (111 km away)

Bacalar doesn't have its own notes for September yet — these are about Caye Caulker, close enough to share the season.

Forum posters are direct that September sits within Belize's wet and hurricane season, with one of the higher rainfall totals of the year, though actual year-to-year experience varies. Posters consistently describe rain here as coming mostly overnight or as a brief afternoon shower, with days staying sunny and clear rather than washed out - one detailed week-long September stay reported rain only at night or early morning, with nighttime thunderstorms over the ocean described as a genuine visual highlight rather than a nuisance. Posters are consistent that despite hurricane-season nerves, September is actually one of the more beautiful times of year here, with real crowd relief given how much quieter the island runs, though posters note some businesses do close for the season.
Tripadvisor community · September · 1 month ago · about Caye Caulker · Read more on Tripadvisor ↗

Other months in Bacalar

Yucatán coast forum threads describe July as hot and humid with daytime highs around 33C, right around when the 'canícula' - the year's hottest, driest stretch - typically begins in mid-month. It's technically wet season, but posters were consistent that forecasts predicting daily storms don't match reality; when rain does show up it's usually overnight or a brief afternoon shower rather than an all-day event. Hurricane risk in July specifically stays low, picking up more in the following months.
LagoonOfSevenColorsRegular · July · 1 month ago · Read more on Tripadvisor ↗
Forum posters place January inside the more pleasant November-April stretch here - less humid and hot than summer, and correspondingly fewer mosquitoes around the famous Lagoon of Seven Colors. Days are typically sunny and warm, with pleasantly cool nights, though posters note a passing cold front can occasionally bring a properly chilly night and grey, drizzly skies - February sees this more often than January, but it's not ruled out either month. Hurricane risk, a real consideration in the surrounding region from June through November, is essentially off the table by January, one more reason posters favor this month for lagoon swimming and boat trips.
Tripadvisor community · January · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Bacalar's card on the map.

Bacalar climate normals — September

Daytime high33°C / 92°F🔥 sweltering
Nighttime low25°C / 77°F
Feels like (high)40°C / 104°F
Sea temperature32°C / 89°F♨️ bath-warm
Rainfall160 mm / 6.3 in⛈ soaked
Rainy days25 days
Humidity86%💦 very humid
Dew point25°C / 77°F
Sunshine10.3 h/day
Daylight12.2 h
Wind11 km/h / 7 mph
Air quality (US AQI)24🍃 good

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

Crowds in Bacalar 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)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Bacalar'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 weatherBacalar's weather peaks December–February.

September coincides with Atlantic hurricane season.

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Best weatherFair weatherToughest weather

What's on in Bacalar in September

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

  • Hazard

    Atlantic hurricane season

    1 Jun – 30 Nov

    Southern Quintana Roo sits on the western Caribbean track and September is the busiest fortnight of it. Inland on the lagoon you get the rain and the wind rather than the surge, but the road to Chetumal floods. Source ↗

What's on around the world in September →

Nearby, and something's on

Within 300 km of Bacalar — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Bacalar?

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Bacalar in September — FAQ

Is September a good time to visit Bacalar?
September in Bacalar: sweltering, soaked, with clean air — a gamble, with 25 rainy days. It ranks #11 of 12 months for Bacalar on SeasonMap's comfort score (57/100).
What is the weather like in Bacalar in September?
In September, Bacalar averages a daily high of 33.4°C and a low of 24.9°C, with about 160.4 mm of rain over roughly 25 rainy days.
What is the air quality in Bacalar in September?
Bacalar has a mean US Air Quality Index of about 24 in September.

Within 300 km: Caye Caulker's Lobster season opens on 15 Jun – 14 Feb, and Tulum's Sea turtle nesting on 1 May – 31 Oct.