May 21 sees frequent showers in Krabi. Historical data shows a 66% chance of rain, so pack accordingly. Temperatures average 30°C. Expect a bustling atmosphere in Krabi right now—this is when the city truly comes alive with visitors.
View the full calendar
Essential Travel Info for Krabi
Currency
THB
฿ Thai baht
Language
Thai
Driving
Left side
Safety
Moderate Safety
GPI: 2.098
Krabi Weather Forecast for May 21
"Rainy & Overcast. Expect average highs of 30.3°C. 66% chance of rain."
What to Wear in Krabi in May
Based on historical data for May 21, Krabi typically experiences temperatures between 25.5°C and 30.3°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 66% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Krabi
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
30.3°C
Daytime Peak
Average Low
25.5°C
Nighttime Low
Feels Like
40.2°C
🔥 Heat index effect
Rain Chance
66%
Avg 5.2mm if it rains
Cloud Cover
85%
Moderate rain
Pressure
1008.9 hPa
Low volatility
Krabi 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
🔴 18 min to burn
Type III-IV
🟡 27 min to burn
Type V-VI
🟢 45 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
27.5°C
Humid/Sticky
Heat Index
40.2°C
Feels hotter
😕 Best outdoor time:
Early morning (6-9 AM) or evening (after 6 PM)
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
✅ Excellent Swimming Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Thailand
Flight Traffic
High
83/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~39
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Krabi
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:06
☀️ Noon
12:22
🌇 Sunset
18:37
⏱️ Daylight
12h 31m
Wind Speed
13.9 km/h
Gentle breeze
Sunshine
9.3 hrs
Direct Sun (Cloud-free)
Humidity
85%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Krabi
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Krabi
Travel Comfort Index
Real-time tourism conditions
Weather Quality
🌧️ Variable
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Mild discomfort possible for arthritic conditions.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
Cyclone Risk
Season: Apr - Dec
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Krabi on May 21 averages 30.3°C with a 66% precipitation probability. Wedding/Outdoor Event Score: 59/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Krabi Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (May 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Krabi Worth Visiting on May 21?
Planning a trip to Krabi on May 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 30.3°C with a 66% historical precipitation risk.
✈️ Travel Logistics: Approximately 39 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 11 vaccinations are recommended for Thailand, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 31.5°C (hot soup). Wave conditions are generally lake-like with heights around 0.28m.
📊 Historical Extremes: The hottest May 21 recorded in the last 30 years saw temperatures hit 31.9°C in 2020, while the coldest dropped to 24.8°C in 2018.