March 21 is statistically one of the best days of the year in Port of Spain. With minimal rain risk (6%) and pleasant highs of 30°C, it's ideal for outdoor adventures. Expect a bustling atmosphere in Port of Spain right now—this is when the city truly comes alive with visitors.
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Essential Travel Info for Port of Spain
Currency
TTD
$ Trinidad and Tobago dollar
Language
English
Driving
Left side
Connect
SIM cards are easily available. Local ce...
Safety
Moderate Safety
GPI: 2.005
Port of Spain Weather Forecast for March 21
"Warm & Sunny. Expect average highs of 29.9°C. 6% chance of rain."
What to Wear in Port of Spain in March
Based on historical data for March 21, Port of Spain typically experiences temperatures between 24°C and 29.9°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (6% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Port of Spain
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
29.9°C
Daytime Peak
Average Low
24°C
Nighttime Low
Feels Like
35.3°C
🔥 Heat index effect
Rain Chance
6%
Avg 0.5mm if it rains
Cloud Cover
49%
Light drizzle
Pressure
1013.3 hPa
Low volatility
Port of Spain Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 81% 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
24.3°C
Humid/Sticky
Heat Index
35.3°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 Trinidad and Tobago
Flight Traffic
High
94/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~46
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Port of Spain
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:10
☀️ Noon
12:14
🌇 Sunset
18:18
⏱️ Daylight
12h 7m
Wind Speed
26.2 km/h
Moderate wind
Sunshine
11.2 hrs
Direct Sun (Cloud-free)
Humidity
72%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Port of Spain
Smart Flight Estimator
Airport-to-Airport Logistics
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Add your home location in settings to see airport details.
Travel Health & Safety in Port of Spain
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟢 Moderate
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Active seismic zone. Multiple earthquakes per year.
Atlantic Hurricane Risk
Season: Jun - Nov
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, Port of Spain on March 21 averages 29.9°C with a 6% precipitation probability. Wedding/Outdoor Event Score: 95/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Port of Spain Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (March 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Port of Spain Worth Visiting on March 21?
Planning a trip to Port of Spain 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 29.9°C with a 6% historical precipitation risk.
✈️ Travel Logistics: Approximately 46 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 7 vaccinations are recommended for Trinidad and Tobago, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 28.2°C (tropical bath). Wave conditions are generally lake-like with heights around 0.45m.
📊 Historical Extremes: The hottest March 21 recorded in the last 30 years saw temperatures hit 33.5°C in 2024, while the coldest dropped to 21.6°C in 2021.