September 21 is generally a great time to visit Halifax. While there is a slight chance of rain (25%), showers are usually brief. Expect comfortable 19°C weather. Halifax is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Halifax
Currency
CAD
$ Canadian dollar
Language
English
+1 more
Driving
Right side
Connect
McDonald's and Starbucks on Spring Garde...
Safety
Very High Safety
GPI: 1.389
Halifax Weather Forecast for September 21
"Mild & Comfortable. Expect average highs of 18.8°C. 25% chance of rain."
What to Wear in Halifax in September
Based on historical data for September 21, Halifax typically experiences temperatures between 12.8°C and 18.8°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (25% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Halifax
Smart Suitcase
- Light Jacket
- Long Pants
Average High
18.8°C
Daytime Peak
Average Low
12.8°C
Nighttime Low
Feels Like
18.8°C
🌤️ Feels accurate
Rain Chance
25%
Avg 2.2mm if it rains
Cloud Cover
64%
Overcast
Pressure
1017.4 hPa
Medium volatility
Halifax Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 99% 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
🔴 33 min to burn
Type III-IV
🟡 50 min to burn
Type V-VI
🟢 83 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
15.1°C
Pleasant
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
❄️ Cold Water Hazard
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Canada
Flight Traffic
High
92/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~72
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Halifax
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:01
☀️ Noon
12:08
🌇 Sunset
18:16
⏱️ Daylight
12h 14m
Wind Speed
19.1 km/h
Gentle breeze
Sunshine
8.0 hrs
Direct Sun (Cloud-free)
Humidity
79%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Halifax
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 Halifax
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
Atlantic Hurricane Risk
Season: Jun - Nov
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Halifax on September 21 averages 18.8°C with a 25% precipitation probability. Wedding/Outdoor Event Score: 92/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Halifax Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
September 14
19.9°C • 21% rain
Score
97
September 15
19.8°C • 20% rain
Score
97
September 16
19.7°C • 23% rain
Score
96
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (September 21) in other destinations
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🌍 Explore the same date in different destinations around the world
📍 Is Halifax Worth Visiting on September 21?
Planning a trip to Halifax on September 21? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 18.8°C with a 25% historical precipitation risk.
✈️ Travel Logistics: Approximately 72 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 6 vaccinations are recommended for Canada, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 17.2°C (refreshing tonic). Wave conditions are generally surfers only with heights around 1.53m.
📊 Historical Extremes: The hottest September 21 recorded in the last 30 years saw temperatures hit 22.7°C in 2016, while the coldest dropped to 6.2°C in 2020.