Bacalar (Laguna Bacalar) weather in May

May in Bacalar: sweltering, a little rain, with clean air — fine if you can take 38°C afternoons.

Updated September 2026 · climate normals from ERA5 reanalysis

Bacalar🇲🇽 Mexico · Yucatán & Belize · City66
  1. 79Jan
  2. 80Feb
  3. 76Mar
  4. 72Apr
  5. 66May
  6. 53Jun
  7. 63Jul
  8. 59Aug
  9. 57Sep
  10. 61Oct
  11. 71Nov
  12. 77Dec

#7 of 12 months in Bacalar · #1086 of 1413 destinations to visit in May · comfort 66/100 (tier C)

Days
33°C
Nights
26°C
Wet days
12
Sun
11.4 h
Humidity
76%
Daylight
13 h
Bacalar, Mexico
Photo: Carlos Bedoy · Pexels

Traveller notes on Bacalar in May

Notes from nearby Caye Caulker (111 km away)

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

Caye Caulker-forum threads on May weather call it hot and humid, high 20s to low 30s Celsius with humidity high enough to make it feel warmer than the number alone suggests. Precipitation totals are described as low for the month, but posters note a few showers are still likely, usually overnight, early morning, or a brief afternoon burst rather than a washed-out day. May specifically marks the tail end of the low-rain season, the last stretch before the wetter pattern that starts in June takes over. Wind is called a non-issue this month, one less thing to plan around. The record: 31.2C days feeling like a sticky 37C, 26.5C nights, 73mm across 14.5 days, an 82 percent humidity, a 29.4C sea and 11.4 hours of sun.
SplitCaulkerLateMay · May · 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 — May

Daytime high33°C / 92°F🔥 sweltering
Nighttime low26°C / 78°F
Feels like (high)38°C / 100°F
Sea temperature30°C / 86°F♨️ bath-warm
Rainfall69 mm / 2.7 in🌦 some rain
Rainy days12 days
Humidity76%💦 very humid
Dew point24°C / 75°F
Sunshine11.4 h/day
Daylight13 h
Wind16 km/h / 10 mph
Air quality (US AQI)42🍃 good

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

Crowds in Bacalar in May

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 seasonan ordinary month(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).

Fair weatherBacalar's weather peaks December–February.

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Best weatherFair weatherToughest weather

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 May — FAQ

Is May a good time to visit Bacalar?
May in Bacalar: sweltering, a little rain, with clean air — fine if you can take 38°C afternoons. It ranks #7 of 12 months for Bacalar on SeasonMap's comfort score (66/100).
What is the weather like in Bacalar in May?
In May, Bacalar averages a daily high of 33.4°C and a low of 25.6°C, with about 69.1 mm of rain over roughly 11.8 rainy days.
What is the air quality in Bacalar in May?
Bacalar has a mean US Air Quality Index of about 42 in May.

Within 300 km: Tulum's Sea turtle nesting on 1 May – 31 Oct, and Placencia's Whale sharks at Gladden Spit around 15 Mar – 15 Jun.