August 21 is generally a great time to visit George Town. While there is a slight chance of rain (31%), showers are usually brief. Expect comfortable 31°C weather. It's a lively time to explore George Town, with most attractions operating at full capacity.
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Essential Travel Info for George Town
Currency
KYD
$ Cayman Islands dollar
Language
English
Driving
Left side
George Town Weather Forecast for August 21
"Warm & Sunny. Expect average highs of 30.6°C. 31% chance of rain."
What to Wear in George Town in August
Based on historical data for August 21, George Town typically experiences temperatures between 27.1°C and 30.6°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 31% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for George Town
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
30.6°C
Daytime Peak
Average Low
27.1°C
Nighttime Low
Feels Like
38°C
🔥 Heat index effect
Rain Chance
31%
Avg 2.3mm if it rains
Cloud Cover
55%
Light drizzle
Pressure
1013.2 hPa
Low volatility
George Town Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 89% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
06:00 - 10:00
16:00 - 18:00
Type I-II
🔴 15 min to burn
Type III-IV
🟡 23 min to burn
Type V-VI
🟢 38 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
25.6°C
Humid/Sticky
Heat Index
38°C
Feels hotter
😕 Best outdoor time:
Early morning (6-9 AM) or evening (after 6 PM)
Marine Conditions
Jellyfish Warning
High water temps may attract jellyfish swarms.
Swim Index
✅ Excellent Swimming Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Cayman Islands
Flight Traffic
Busy
75/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~24
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in George Town
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:09
☀️ Noon
12:30
🌇 Sunset
18:50
⏱️ Daylight
12h 41m
Wind Speed
23.5 km/h
Moderate wind
Sunshine
10.7 hrs
Direct Sun (Cloud-free)
Humidity
75%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for George Town
Smart Flight Estimator
Airport-to-Airport Logistics
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Add your home location in settings to see airport details.
Travel Health & Safety in George Town
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🔴 Very Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Moderate seismic activity. Occasional tremors possible.
Atlantic Hurricane Risk
Season: Jun - Nov
"According to 30YearWeather's analysis of 30 years of NASA satellite data, George Town on August 21 averages 30.6°C with a 31% precipitation probability. Wedding/Outdoor Event Score: 86/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
George Town Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
August 14
30.7°C • 24% rain
Score
90
August 15
30.7°C • 21% rain
Score
90
August 16
30.7°C • 23% rain
Score
89
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (August 21) in other destinations
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📍 Is George Town Worth Visiting on August 21?
Planning a trip to George Town on August 21? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 30.6°C with a 31% historical precipitation risk.
✈️ Travel Logistics: Approximately 24 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 7 vaccinations are recommended for Cayman Islands, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 30.7°C (hot soup). Wave conditions are generally fun waves with heights around 0.98m.
📊 Historical Extremes: The hottest August 21 recorded in the last 30 years saw temperatures hit 33.4°C in 2024, while the coldest dropped to 24.3°C in 2022.