Historical data suggests significant rain risk (80%) on August 21. If you seek sun, consider a different date. Bring rain gear! As it's peak season for Manila, we recommend booking your stay well in advance to secure the best rates. Note: August 21 is Ninoy Aquino Day in Manila, so expect special events, closures, and festive atmosphere.
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Essential Travel Info for Manila
Currency
PHP
₱ Philippine peso
Language
English
+1 more
Driving
Right side
Connect
Payphones are very common in the city ce...
Safety
Moderate Safety
GPI: 2.339
Manila Weather Forecast for August 21
"Rainy & Overcast. Expect average highs of 29.2°C. 80% chance of rain."
What to Wear in Manila in August
Based on historical data for August 21, Manila typically experiences temperatures between 25°C and 29.2°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 80% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Manila
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
29.2°C
Daytime Peak
Average Low
25°C
Nighttime Low
Feels Like
36.7°C
🔥 Heat index effect
Rain Chance
80%
Avg 7.5mm if it rains
Cloud Cover
89%
Moderate rain
Pressure
1008.4 hPa
Low volatility
Manila Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 96% 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
🔴 24 min to burn
Type III-IV
🟡 36 min to burn
Type V-VI
🟢 60 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
26.6°C
Humid/Sticky
Heat Index
36.7°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
Holiday
Ninoy Aquino Day
Flight Traffic
High
96/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~415
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Manila
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:44
☀️ Noon
12:00
🌇 Sunset
18:17
⏱️ Daylight
12h 33m
Wind Speed
15.2 km/h
Gentle breeze
Sunshine
8.1 hrs
Direct Sun (Cloud-free)
Humidity
86%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Manila
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 Manila
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. Everyone should reduce outdoor activities.
Regional Safety Profile
Seismic Activity
Active seismic zone. Multiple earthquakes per year.
Typhoon Risk
Year-round risk present
Volcanic Activity
Nearest: Taal Volcano
66.4km away
Travel Alert: This region has elevated natural risks. We recommend registering with your embassy and keeping emergency numbers handy.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Manila on August 21 averages 29.2°C with a 80% precipitation probability. Wedding/Outdoor Event Score: 47/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Manila 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
29.5°C • 72% rain
Score
54
August 17
29.6°C • 72% rain
Score
54
August 18
29.5°C • 73% rain
Score
54
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (August 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Manila Worth Visiting on August 21?
Planning a trip to Manila 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 29.2°C with a 80% historical precipitation risk.
🎉 Local Event: The date coincides with Ninoy Aquino Day, which may influence local business hours and event availability.
✈️ Travel Logistics: Approximately 415 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 11 vaccinations are recommended for Philippines, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 31.1°C (hot soup). Wave conditions are generally lake-like with heights around 0.28m.
📊 Historical Extremes: The hottest August 21 recorded in the last 30 years saw temperatures hit 32.3°C in 2024, while the coldest dropped to 24.2°C in 2022.