George Town (Grand Cayman) weather in August

August in George Town: sweltering, rainy, with clean air — fine if you can take 39°C afternoons.

Updated September 2026 · climate normals from ERA5 reanalysis

George Town Cayman Islands · Greater Antilles · Island82
  1. 89Jan
  2. 91Feb
  3. 91Mar
  4. 90Apr
  5. 84May
  6. 79Jun
  7. 85Jul
  8. 82Aug
  9. 80Sep
  10. 72Oct
  11. 76Nov
  12. 86Dec

#8 of 12 months in George Town · #588 of 1413 destinations to visit in August · comfort 82/100 (tier A)

Days
33°C
Nights
26°C
Wet days
14
Sun
11.2 h
Humidity
76%
Daylight
13 h
George Town, Cayman Islands
Photo: Kenny Foo · Pexels

Traveller notes on George Town in August

Other months in George Town

Forum posters note Grand Cayman gets around 50 inches of rain annually, much of it concentrated in the shoulder-season months of May and October. Posters describe October rain as typically intermittent - it comes down, then the sun returns - rather than an all-day washout, though experiences genuinely vary, with some travelers reporting glorious weather and others hitting rainier stretches. Posters are direct that October sits within prime Atlantic hurricane season, meaning real trip-disruption risk and travel insurance worth having in case a big storm requires canceling. On the upside, posters note October brings quieter crowds, easier restaurant bookings, lower condo prices, and local events like Restaurant Month and Cocktail Week. Posters generally rate October as a genuine trade-off for George Town - real rain and hurricane risk balanced against real value and lighter crowds.
Tripadvisor community · October · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe April as sitting near the end of the cooler, drier winter season (November-April) - typically mid-to-high 80sF by day, mid-to-high 70sF at night, with little to no rain and crystal-clear water. Posters call March through mid-May the best overall weather stretch, with no need to worry about tropical storms or hurricanes this time of year. The trade-off: April counts as high season, with room rates 40-100% above the off-season baseline, though posters note mid-April through mid-May (after Easter) brings meaningfully lower rates while the good weather largely holds - a sweet spot for value-conscious travelers willing to shift a couple of weeks later.
Tripadvisor community · April · 1 month ago · Read more on Tripadvisor ↗

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George Town climate normals — August

Daytime high33°C / 91°F🔥 sweltering
Nighttime low26°C / 79°F
Feels like (high)39°C / 102°F
Sea temperature31°C / 87°F♨️ bath-warm
Rainfall88 mm / 3.5 in🌧 rainy
Rainy days14 days
Humidity76%💦 very humid
Dew point26°C / 78°F
Sunshine11.2 h/day
Daylight12.8 h
Wind25 km/h / 15 mph
Air quality (US AQI)45🍃 good

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

Crowds in George Town 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 George Town'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 weatherGeorge Town's weather doesn't swing hard through the year — comfort stays fairly steady in every month.

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What's on in George Town in August

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

  • Hazard

    Hurricane season

    1 Jun – 30 Nov

    Ivan sat over Grand Cayman for the best part of a day in 2004 and flooded most of the island; everything built since is raised and shuttered for it. September and October carry the real risk. Source ↗

  • Nature

    Silversides in the swim-throughs

    15 Jun – 15 Sep · usuallyDive season

    Baitballs of silversides pack the caverns at Devil's Grotto and Eden Rock, right off the George Town waterfront, with tarpon working through them. It is the rare world-class dive you can swim to from shore.

What's on around the world in August →

Where is George Town?

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George Town in August — FAQ

Is August a good time to visit George Town?
August in George Town: sweltering, rainy, with clean air — fine if you can take 39°C afternoons. It ranks #8 of 12 months for George Town on SeasonMap's comfort score (82/100).
What is the weather like in George Town in August?
In August, George Town averages a daily high of 32.9°C and a low of 26.2°C, with about 87.8 mm of rain over roughly 13.8 rainy days.
What is the air quality in George Town in August?
George Town has a mean US Air Quality Index of about 45 in August.