May 11 sees frequent showers in Phnom Penh. Historical data shows a 60% chance of rain, so pack accordingly. Temperatures average 34°C. As it's peak season for Phnom Penh, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Phnom Penh
Currency
KHR
៛ Cambodian riel
Language
Khmer
Driving
Right side
Connect
Cheap SIM cards from US$2 for GSM phones...
Safety
High Safety
GPI: 1.882
Phnom Penh Weather Forecast for May 11
"Rainy & Overcast. Expect average highs of 33.7°C. 60% chance of rain."
What to Wear in Phnom Penh in May
Based on historical data for May 11, Phnom Penh typically experiences temperatures between 26.1°C and 33.7°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 60% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Phnom Penh
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
33.7°C
Daytime Peak
Average Low
26.1°C
Nighttime Low
Feels Like
49.3°C
🔥 Heat index effect
Rain Chance
60%
Avg 4.8mm if it rains
Cloud Cover
81%
Moderate rain
Pressure
1008 hPa
Low volatility
Phnom Penh Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 91% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
05:00 - 10:00
16:00 - 18:00
Type I-II
🔴 17 min to burn
Type III-IV
🟡 26 min to burn
Type V-VI
🟢 43 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
29.1°C
Humid/Sticky
Heat Index
49.3°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 Cambodia
Flight Traffic
High
81/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~48
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Phnom Penh
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:39
☀️ Noon
11:58
🌇 Sunset
18:16
⏱️ Daylight
12h 37m
Wind Speed
12.8 km/h
Gentle breeze
Sunshine
10.3 hrs
Direct Sun (Cloud-free)
Humidity
77%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Phnom Penh
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 Phnom Penh
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
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Phnom Penh on May 11 averages 33.7°C with a 60% precipitation probability. Wedding/Outdoor Event Score: 65/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Phnom Penh Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
May 6
34.2°C • 42% rain
Score
79
May 5
34.1°C • 44% rain
Score
78
May 7
34.2°C • 42% rain
Score
78
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (May 11) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Phnom Penh Worth Visiting on May 11?
Planning a trip to Phnom Penh on May 11? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 33.7°C with a 60% historical precipitation risk.
✈️ Travel Logistics: Approximately 48 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 10 vaccinations are recommended for Cambodia, including COVID-19.
📊 Historical Extremes: The hottest May 11 recorded in the last 30 years saw temperatures hit 38.7°C in 2016, while the coldest dropped to 25.2°C in 2025.