July 21 sees frequent showers in Bangkok. Historical data shows a 64% chance of rain, so pack accordingly. Temperatures average 31°C. As it's peak season for Bangkok, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Bangkok
Currency
THB
฿ Thai baht
Language
Thai
Driving
Left side
Connect
Prepaid SIM cards for tourists are readi...
Safety
Moderate Safety
GPI: 2.098
Bangkok Weather Forecast for July 21
"Rainy & Overcast. Expect average highs of 31.2°C. 64% chance of rain."
What to Wear in Bangkok in July
Based on historical data for July 21, Bangkok typically experiences temperatures between 25.7°C and 31.2°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 64% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Bangkok
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
31.2°C
Daytime Peak
Average Low
25.7°C
Nighttime Low
Feels Like
41.6°C
🔥 Heat index effect
Rain Chance
64%
Avg 4.4mm if it rains
Cloud Cover
93%
Moderate rain
Pressure
1006.7 hPa
Low volatility
Bangkok Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 83% 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
🔴 21 min to burn
Type III-IV
🟡 32 min to burn
Type V-VI
🟢 53 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
27.3°C
Humid/Sticky
Heat Index
41.6°C
Feels hotter
😕 Best outdoor time:
Early morning (6-9 AM) or evening (after 6 PM)
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Thailand
Flight Traffic
High
90/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~500
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Bangkok
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:00
☀️ Noon
12:25
🌇 Sunset
18:50
⏱️ Daylight
12h 49m
Wind Speed
15.5 km/h
Gentle breeze
Sunshine
7.2 hrs
Direct Sun (Cloud-free)
Humidity
80%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Bangkok
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 Bangkok
Travel Comfort Index
Real-time tourism conditions
Weather Quality
🌧️ Variable
Tourist Crowds
🔴 Very 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.
Unhealthy for sensitive groups. Consider wearing a mask outdoors.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Bangkok on July 21 averages 31.2°C with a 64% precipitation probability. Wedding/Outdoor Event Score: 60/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Bangkok Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
July 23
31.2°C • 59% rain
Score
64
July 25
31.3°C • 59% rain
Score
64
July 15
31.6°C • 60% rain
Score
63
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (July 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Bangkok Worth Visiting on July 21?
Planning a trip to Bangkok on July 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 31.2°C with a 64% historical precipitation risk.
✈️ Travel Logistics: Approximately 500 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 11 vaccinations are recommended for Thailand, including COVID-19.
📊 Historical Extremes: The hottest July 21 recorded in the last 30 years saw temperatures hit 32.2°C in 2019, while the coldest dropped to 24.8°C in 2022.