Caye Caulker (Caulker) weather in August

August in Caye Caulker: sweltering, soaked, with clean air — fine if you can take 24 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Caye Caulker🇧🇿 Belize · Yucatán & Belize · Island76
  1. 85Jan
  2. 90Feb
  3. 91Mar
  4. 89Apr
  5. 86May
  6. 71Jun
  7. 79Jul
  8. 76Aug
  9. 75Sep
  10. 72Oct
  11. 75Nov
  12. 84Dec

#8 of 12 months in Caye Caulker · #787 of 1413 destinations to visit in August · comfort 76/100 (tier B)

Days
31°C
Nights
26°C
Wet days
24
Sun
10.9 h
Humidity
85%
Daylight
13 h
Caye Caulker, Belize
Photo: Dronepicr · CC BY 3.0

Traveller notes on Caye Caulker in August

Notes from nearby Belize City (33 km away)

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

Forum posters cite typical August daily highs around 31C (88-90F) with overnight lows near 24C, and describe rain this time of year as most often falling overnight, leaving days sunny and clear more often than not - it seldom rains every day or all day unless a tropical low pressure system moves through. Posters specifically flag mid-August as home to Belize's well-known 'little dry season,' roughly a two-week stretch of notably reduced rainfall within the broader wet season. Posters are consistent that hurricane risk in August itself is low, citing historical records showing only a handful of hurricanes have affected Belize before September in the past century. Posters generally rate August as hot, humid and typically sunny by day for Belize City, with rain concentrated overnight and hurricane risk still modest this early in the season.
Tripadvisor community · August · 1 month ago · about Belize City · Read more on Tripadvisor ↗

Other months in Caye Caulker

January is the coolest month here and regulars describe the mechanism rather than the average: from December to March a cold front crosses every ten to fourteen days and lasts a day or two, bringing wind, cloud and sometimes rain - and sometimes no rain at all. What it does bring is wind, which is the part that spoils a snorkelling day. Our row fits: 78mm across 15.4 days is five millimetres a time, and all-day rain is as rare as they say. Days reach 27.4C and feel like 31C at 84 percent humidity; nights fall to 22.4C, or lower behind a front. The sea is 26.7C. The record: 9.4 hours of sun, a 17.3 kph wind and AQI 41.
AFrontEveryTwoWeeks · January · 1 month ago · Read more on Tripadvisor ↗
Caye Caulker-forum threads on July weather describe a real gap between the forecast and lived experience: apps often show rain and storms every single day of the month, but posters consistently report that isn't what actually happens on the ground. The more typical pattern is a single rain event roughly once a week, usually landing in the very early morning hours and clearing up well before 9am, leaving the rest of the day sunny and calm. Some visitors describe entire stretches with barely any rain at all, calling it some of the year's most beautiful weather; others get the more standard hot-and-humid version with an occasional storm. All-day rain is described as genuinely rare rather than typical. Heat and humidity both run high regardless of the rain pattern, the more consistent discomfort across every account. The record: 30.7C days feeling like a punishing 37C, 26.4C nights, a notably high 144mm across 24.6 days, 85 percent humidity, a 30C sea and 11.2 hours of sun.
SplitCaulkerJulyRegular · July · 1 month ago · Read more on Tripadvisor ↗
Caye Caulker-forum threads on November weather are consistent that it's technically inside the rainy season but rarely feels like it day to day: rain doesn't fall every day or all day, arriving instead as a brief shower, often overnight, so mornings tend to stay clear and sunny. Posters call the month variable but mainly sunny overall, and the sea itself stays calm and warm, genuinely comfortable for swimming even with rain technically on the books. The general consensus is not to overthink November's rainy-season label - the actual lived experience most visitors report is closer to a normal tropical month with an occasional wet interruption than a washout. The record: 28.7C days feeling like a sticky 34C, 23.6C nights, a notably high 192mm across 19.6 days, 86 percent humidity, a 28.4C sea and 9.2 hours of sun - wetter by the numbers than the forum's easygoing framing suggests.
SplitCaulkerNovember · November · 1 month ago · Read more on Tripadvisor ↗
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 · Read more on Tripadvisor ↗

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

Caye Caulker climate normals — August

Daytime high31°C / 88°F🔥 sweltering
Nighttime low26°C / 79°F
Feels like (high)38°C / 100°F
Sea temperature31°C / 87°F♨️ bath-warm
Rainfall184 mm / 7.2 in⛈ soaked
Rainy days24 days
Humidity85%💦 very humid
Dew point26°C / 78°F
Sunshine10.9 h/day
Daylight12.7 h
Wind17 km/h / 11 mph
Air quality (US AQI)47🍃 good

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

Crowds in Caye Caulker 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)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Caye Caulker'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 weatherCaye Caulker's weather peaks February–April, best around March.

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Best weatherFair weatherToughest weather

What's on in Caye Caulker in August

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

  • Season

    Sargassum on the windward side

    1 Apr – 30 Sep · usuallySargassum season

    The east shore and the Split collect weed through the summer and crews rake it at dawn. Swimming here is off a dock ladder in any case, which takes most of the sting out of it.

  • Hazard

    Hurricane season

    1 Jun – 30 Nov

    The island is barely a metre above the sea and evacuates by water taxi. Belize's serious weeks run from August into October, and the dive shops shut days before a system is due. Source ↗

  • Opening

    Lobster season opens

    15 Jun – 14 FebForaging season

    The spiny lobster season legally runs from 15 June to 14 February. Outside it, any menu still offering lobster is selling something frozen or illegal, and the boats switch to conch and snapper. Source ↗

What's on around the world in August →

Nearby, and something's on

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

Where is Caye Caulker?

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Caye Caulker in August — FAQ

Is August a good time to visit Caye Caulker?
August in Caye Caulker: sweltering, soaked, with clean air — fine if you can take 24 rainy days. It ranks #8 of 12 months for Caye Caulker on SeasonMap's comfort score (76/100).
What is the weather like in Caye Caulker in August?
In August, Caye Caulker averages a daily high of 31°C and a low of 26.3°C, with about 183.6 mm of rain over roughly 24.4 rainy days.
What is the air quality in Caye Caulker in August?
Caye Caulker has a mean US Air Quality Index of about 47 in August.

Within 300 km: Roatán's Coral spawning nights around 20 Aug – 25 Sep, and Tulum's Sea turtle nesting on 1 May – 31 Oct.