Cape May, NJ weather in September
Expect mild weather with some rain in Cape May in September, with highs near 79°F and lows near 62°F. Rain falls on about 9 days. Good for outdoor plans.
- Normal high
- 79°F
- Normal low
- 62°F
- Wet days
- 9
- 3.8 in total
- Muggy days
- 9
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 82°F | 74°F |
| Normal low | 66°F | 57°F |
| Chance of a wet day | 28% | 31% |
| Sunrise / sunset | 6:28 am / 7:30 pm | 6:54 am / 6:44 pm |
| Daylight | 13.0 h | 11.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical September day
- 6 am63°Fdew point 60°F
- 9 am71°Fdew point 62°F
- Noon75°Fdew point 61°F
- 3 pm76°Fdew point 60°F
- 6 pm71°Fdew point 61°F
- 9 pm67°Fdew point 61°F
NOAA hourly normals (local standard time) from Dover AFB (33 mi away); average wind 8 mph; clear or few clouds in 49% of daytime hours, mostly cloudy or overcast in 38%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F12 of 30
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph11 of 30
- Hot dayshigh 90°F or more1 of 30
- Muggy daysdaily mean dew point 65°F or more9 of 30
- Wet daysat least 0.01 in of rain or melted snow9 of 30
- Notable rainat least 0.10 in6 of 30
- Freezing nightslow 32°F or below0 of 30
- Snow on the groundsnow depth 1 in or more0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain in September
Normal precipitation is 3.8 in; a dry September brings about 2.1 in and a wet one about 4.6 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How September varies from year to year
- Warmest September, 1991-20202005: average high 84°F
- Coolest September1992: average high 76°F
- Wettest September2016: 11.1 in
- Driest September2005: 0.3 in
- Highest reading95°F (September 3, 1993)
- Lowest reading41°F (September 24, 1998)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
September compared with August and October
| August | September | October | |
|---|---|---|---|
| Normal high | 84°F | 79°F | 68°F |
| Normal low | 67°F | 62°F | 51°F |
| Wet days | 9 | 9 | 10 |
| Comfortable days | 2 | 12 | 16 |
| Daylight | 13.7 h | 12.4 h | 11.2 h |
Highs change by -5°F from August and -11°F into October.
Nearby alternatives in September
- Cooler: Montauk, NY213 mi · high 73°F · 10 wet days
How Cape May ranks in September
- Normal high214th warmest of 378 cities; 1st of 3 in New Jersey
- Wet days248th driest of 378
- Comfortable days135th most of 342
What to pack for Cape May in September
- A rain jacket or umbrella – rain on about 9 days
- A swimsuit – about 11 beach days
Heating and cooling
September has 22 heating degree days and 177 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Cape May in September?
The normal high is 79°F and the normal low is 62°F. From 1991 to 2020 the hottest September reading was 95°F (September 3, 1993).
Does it rain a lot in Cape May in September?
About 9 days in September have at least 0.01 in of precipitation, and the normal total is 3.8 in. The wettest September in 1991-2020 was in 2016 (11.1 in); the driest was in 2005 (0.4 in).
Is September a good time to visit Cape May?
September ranks 4th of 12 months on our comfort score for Cape May (64 out of 100). It has about 12 comfortable days and about 1 day at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: Cape May 2 Nw (USC00281351), 2.0 mi NW of the city center, 20 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Dover AFB (USW00013707), 33 mi WNW of the city center, 23 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Millville Municipal Arpt (724075-13735), 31 mi NNW of the city center, 58 ft (51 ft higher than the city). Hourly observations, 1991-2020.