Verdict: Excellent month
New York Weather in September
September hits the sweet spot in New York — highs around 25°C (77°F), ideal for a full day on foot. Expect showers on roughly 10 days of the month — rarely trip-ruining, worth planning around. Overall, September is one of the best months of the year to be in New York.
Average high
25°C / 77°F
Average low
16°C / 61°F
Rain days
~10
Precipitation
136 mm
What to pack for New York in September
- Summer clothes, plus one light layer for air-con and evenings
- A packable rain shell or compact umbrella earns its space
- Comfortable walking shoes — every guide on this site assumes you'll use them
September against the rest of the year
Warmest in New York: Jul (30°C / 86°F) · Coolest: Jan (5°C / 41°F) · Wettest: Jul (~14 rain days)
5°
-2°
Jan
7°
-2°
Feb
11°
2°
Mar
16°
6°
Apr
21°
11°
May
27°
17°
Jun
30°
21°
Jul
29°
20°
Aug
25°
16°
Sep
19°
11°
Oct
13°
4°
Nov
7°
0°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)