March 21 sees frequent showers in Singapore. Historical data shows a 65% chance of rain, so pack accordingly. Temperatures average 30°C. It's a quieter period for Singapore, ideal for those who prefer unhurried sightseeing.
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Essential Travel Info for Singapore
Currency
SGD
$ Singapore dollar
Language
English
+3 more
Driving
Left side
Connect
The international telephone country code...
Safety
Very High Safety
GPI: 1.326
Singapore Weather Forecast for March 21
"Rainy & Overcast. Expect average highs of 29.8°C. 65% chance of rain."
What to Wear in Singapore in March
Based on historical data for March 21, Singapore typically experiences temperatures between 24.3°C and 29.8°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 65% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Singapore
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
29.8°C
Daytime Peak
Average Low
24.3°C
Nighttime Low
Feels Like
38.2°C
🔥 Heat index effect
Rain Chance
65%
Avg 6.6mm if it rains
Cloud Cover
80%
Moderate rain
Pressure
1009.6 hPa
Low volatility
Singapore Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 92% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 30 min to burn
Type III-IV
🟡 45 min to burn
Type V-VI
🟢 75 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
26.8°C
Humid/Sticky
Heat Index
38.2°C
Feels hotter
😕 Best outdoor time:
Morning hours (before 11 AM)
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 Singapore
Flight Traffic
Quiet
28/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~514
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Singapore
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
07:10
☀️ Noon
13:13
🌇 Sunset
19:16
⏱️ Daylight
12h 6m
Wind Speed
10.6 km/h
Light breeze
Sunshine
10.1 hrs
Direct Sun (Cloud-free)
Humidity
84%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Singapore
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 Singapore
Travel Comfort Index
Real-time tourism conditions
Weather Quality
🌧️ Variable
Tourist Crowds
🟢 Moderate
Price Level
💰💰 Moderate
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, Singapore on March 21 averages 29.8°C with a 65% precipitation probability. Wedding/Outdoor Event Score: 61/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Singapore Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
March 14
29.8°C • 54% rain
Score
73
March 15
29.9°C • 53% rain
Score
73
March 16
29.9°C • 53% rain
Score
73
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (March 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Singapore Worth Visiting on March 21?
Planning a trip to Singapore on March 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 29.8°C with a 65% historical precipitation risk.
✈️ Travel Logistics: Approximately 514 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 7 vaccinations are recommended for Singapore, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 28.8°C (tropical bath). Wave conditions are generally lake-like with heights around 0.23m.
📊 Historical Extremes: The hottest March 21 recorded in the last 30 years saw temperatures hit 33.4°C in 2019, while the coldest dropped to 22.1°C in 2025.