August 18 sees frequent showers in Phuket. Historical data shows a 64% chance of rain, so pack accordingly. Temperatures average 29°C. As it's peak season for Phuket, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Phuket
Currency
THB
฿ Thai baht
Language
Thai
Driving
Left side
Connect
If you want to send mail, post offices a...
Safety
Moderate Safety
GPI: 2.098
Phuket Weather Forecast for August 18
"Rainy & Overcast. Expect average highs of 29°C. 64% chance of rain."
What to Wear in Phuket in August
Based on historical data for August 18, Phuket typically experiences temperatures between 26°C and 29°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 Phuket
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
29°C
Daytime Peak
Average Low
26°C
Nighttime Low
Feels Like
35.2°C
🔥 Heat index effect
Rain Chance
64%
Avg 6.1mm if it rains
Cloud Cover
86%
Moderate rain
Pressure
1009.5 hPa
Low volatility
Phuket Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 95% 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
🔴 23 min to burn
Type III-IV
🟡 35 min to burn
Type V-VI
🟢 58 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
35.2°C
Feels hotter
😕 Best outdoor time:
Morning hours (before 11 AM)
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 Thailand
Flight Traffic
High
81/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~143
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Phuket
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:21
☀️ Noon
12:32
🌇 Sunset
18:43
⏱️ Daylight
12h 21m
Wind Speed
15.7 km/h
Gentle breeze
Sunshine
9.4 hrs
Direct Sun (Cloud-free)
Humidity
82%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Phuket
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 Phuket
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.
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, Phuket on August 18 averages 29°C with a 64% precipitation probability. Wedding/Outdoor Event Score: 64/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Phuket Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
August 16
29°C • 60% rain
Score
67
August 15
28.9°C • 62% rain
Score
66
August 17
29°C • 62% rain
Score
66
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (August 18) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Phuket Worth Visiting on August 18?
Planning a trip to Phuket on August 18? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 29°C with a 64% historical precipitation risk.
✈️ Travel Logistics: Approximately 143 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 30.3°C (hot soup). Wave conditions are generally fun waves with heights around 0.82m.
📊 Historical Extremes: The hottest August 18 recorded in the last 30 years saw temperatures hit 31.4°C in 2025, while the coldest dropped to 24.3°C in 2022.