What to expect in New York City in September
September is one of the best times to visit New York City. Expect 24° / 16°, the biggest crowds of the year and prices close to the yearly average.
New York City weather in September
Typical conditions in New York City during September, based on long-run climate normals rather than any single year. Treat it as a planning guide, not a forecast.
| Average high | 24°C 75°F |
|---|---|
| Average low | 16°C 61°F |
| Rainfall | Moderate 30/100 |
| Total rainfall | 109 mm4.3 in |
| Rainy days | 9 |
| Sea temperature | 21°C 71°F |
| Daylight | 12 h 29 min |
| How it feels | Warm and comfortable |
Average highs sit around 24°C with lows near 16°C. It is one of the drier months — pack light.
Crowds & demand
Crowd levels are High for New York City — the biggest crowds of the year.
Prices & value
This month counts as shoulder season: prices close to the yearly average.
What to pack
Light layers for 24°C days and something with sleeves for evenings, which cool to around 16°C.
What it costs
Costs in September sit around the yearly average for New York City — neither a bargain nor a squeeze. Booking a few weeks out is usually enough. Compared with the most expensive month of the year, you are looking at roughly 24% less.
Who this month suits
- Travellers who want the most reliable weather
- Anyone travelling on a budget
- Visitors who want to catch a festival
Events & what’s on
Look out for US Open Tennis while you’re there.
- US Open Tennis — Tennis's final Grand Slam draws crowds to Flushing Meadows.
New York City in September compared with nearby months
If your dates are flexible by a few weeks, this is what shifting them actually buys you.
| Month | Temp | Crowds | Price | Score |
|---|---|---|---|---|
| July | 29° / 21° | High | $$$ | 46 |
| August | 28° / 20° | High | $$$ | 48 |
| September · This month | 24° / 16° | High | $$ | 58 |
| October | 18° / 10° | High | $$ | 47 |
| November | 12° / 5° | High | $$ | 43 |
These months score higher for New York City on the same blend of weather, crowds and price. Same destination, better odds.
Or go somewhere else in September
If the destination is negotiable but the month is not, these places are at their best in September.
Figures are climate normals and modelled estimates — a planning guide, not a forecast. We separate fact, estimate and recommendation. Updated October 2026
