September 18 is statistically one of the best days of the year in New York. With minimal rain risk (14%) and pleasant highs of 24°C, it's ideal for outdoor adventures. Expect a bustling atmosphere in New York right now—this is when the city truly comes alive with visitors.
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Essential Travel Info for New York
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Connect
Find free wireless wifi & hotspot across...
Safety
Moderate Safety
GPI: 2.44
New York Weather Forecast for September 18
"Mild & Comfortable. Expect average highs of 23.6°C. 14% chance of rain."
What to Wear in New York in September
Based on historical data for September 18, New York typically experiences temperatures between 15.1°C and 23.6°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (14% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for New York
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
23.6°C
Daytime Peak
Average Low
15.1°C
Nighttime Low
Feels Like
24.2°C
☀️ Feels accurate
Rain Chance
14%
Avg 0.9mm if it rains
Cloud Cover
49%
Overcast
Pressure
1018.6 hPa
Medium volatility
New York Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 89% 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
🔴 27 min to burn
Type III-IV
🟡 41 min to burn
Type V-VI
🟢 68 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
18.5°C
Noticeable
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
✅ Excellent Swimming Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in United States
Flight Traffic
High
91/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~632
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in New York
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:40
☀️ Noon
11:51
🌇 Sunset
18:02
⏱️ Daylight
12h 21m
Wind Speed
14.7 km/h
Gentle breeze
Sunshine
9.2 hrs
Direct Sun (Cloud-free)
Humidity
73%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for New York
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 New York
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 acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
Atlantic Hurricane Risk
Season: Jun - Nov
"According to 30YearWeather's analysis of 30 years of NASA satellite data, New York on September 18 averages 23.6°C with a 14% precipitation probability. Wedding/Outdoor Event Score: 100/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
New York Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (September 18) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is New York Worth Visiting on September 18?
Planning a trip to New York on September 18? 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 23.6°C with a 14% historical precipitation risk.
✈️ Travel Logistics: Approximately 632 landing slots available daily during this period, indicating peak tourist activity.
🌊 Coastal Conditions: Water temperature averages 22.4°C (swimming pool). Wave conditions are generally lake-like with heights around 0.35m.
📊 Historical Extremes: The hottest September 18 recorded in the last 30 years saw temperatures hit 29°C in 2022, while the coldest dropped to 12.7°C in 2019.