Atlantic City climate
Atlantic City (New Jersey, United States) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 13 °C55 °F, and about 1,203 mm47 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Atlantic City climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 541 | −130 | 235 | 813.2 | 18 |
| Feb | 642 | −130 | 236 | 853.4 | 16 |
| Mar | 948 | 235 | 542 | 1054.1 | 10 |
| Apr | 1457 | 744 | 1051 | 933.7 | 1 |
| May | 1966 | 1254 | 1660 | 893.5 | 0 |
| Jun | 2475 | 1864 | 2170 | 1054.2 | 0 |
| Jul | 2780 | 2171 | 2476 | 1114.4 | 0 |
| Aug | 2780 | 2170 | 2475 | 1094.3 | 0 |
| Sep | 2475 | 1865 | 2170 | 903.5 | 0 |
| Oct | 1966 | 1254 | 1660 | 1174.6 | 0 |
| Nov | 1355 | 744 | 1050 | 993.9 | 2 |
| Dec | 846 | 236 | 541 | 1194.7 | 10 |
| Year | 2780 | −130 | 1355 | 1,20347 | 57 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 81% | 62% | 2.0 | 9:41 |
| Feb | 80% | 61% | 2.9 | 10:40 |
| Mar | 80% | 59% | 3.9 | 11:50 |
| Apr | 80% | 57% | 5.0 | 13:11 |
| May | 83% | 59% | 5.6 | 14:19 |
| Jun | 82% | 56% | 6.1 | 14:56 |
| Jul | 81% | 52% | 6.2 | 14:41 |
| Aug | 79% | 51% | 5.4 | 13:42 |
| Sep | 78% | 50% | 4.4 | 12:23 |
| Oct | 78% | 54% | 3.1 | 11:05 |
| Nov | 79% | 56% | 2.3 | 9:57 |
| Dec | 81% | 62% | 1.8 | 9:24 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Atlantic City is like
The warmest month is July, with an average high of 27 °C80 °F and a low of 21 °C71 °F. The coldest is January, when highs average 5 °C41 °F and lows −1 °C30 °F. Seasons are strongly marked: the warmest month is on average 22.5 °C40.4 °F warmer than the coldest.
It is wet, with about 1,203 mm47 in of precipitation per year. Rain is spread fairly evenly through the year. The wettest month is December (119 mm4.7 in), the driest is January (81 mm3.2 in).
Relative humidity ranges from 78% in October to 83% in May. The clearest skies (lowest average cloud amount, 50%) are typical of September. Average wind speed near the ground ranges from 11 km/h (7 mph) in July to 17 km/h (11 mph) in January. Daylight lasts from about 9.4 hours in December to 14.9 hours in June.
Best time to visit Atlantic City
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June and September: average highs of 24 °C75 °F to 24 °C75 °F with 90 mm3.5 in to 105 mm4.2 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 5 °C41 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Atlantic City
- Winter (December–February) — highs 541 to 8 °C46 °F, lows −130 to 2 °C36 °F, about 95 mm3.7 in of precipitation a month. Pack a warm coat, layers and closed shoes, shoes with good grip, as frost is common and an umbrella or light rain jacket.
- Spring (March–May) — highs 948 to 19 °C66 °F, lows 235 to 12 °C54 °F, about 96 mm3.8 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an umbrella or light rain jacket.
- Summer (June–August) — highs 2475 to 27 °C80 °F, lows 1864 to 21 °C71 °F, about 108 mm4.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Autumn (September–November) — highs 1355 to 24 °C75 °F, lows 744 to 18 °C65 °F, about 102 mm4.0 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
How Atlantic City compares
Compared with Philadelphia, about 91 km to the northwest, Atlantic City is on average 0.8 °C1.4 °F warmer and receives a similar amount of precipitation. The difference is largest in December (2.8 °C5 °F warmer).
Of the 222 places in the United States covered by World Climates, Atlantic City is the 134th warmest by annual mean temperature and the 69th wettest by annual precipitation. See all of them on the United States climate page.
Places in other countries with the most similar temperature and rainfall pattern: Ishinomaki (Japan, Cfa), Ōsaki (Japan, Cfa) and Akita (Japan, Cfa).
Nearby places
- Philadelphia 91 km · 12 °C54 °F · 1,226 mm48 in
- Staten Island 135 km · 12 °C53 °F · 1,226 mm48 in
- Brooklyn 149 km · 12 °C54 °F · 1,312 mm52 in
- New York City 154 km · 12 °C54 °F · 1,312 mm52 in
- Manhattan 163 km · 11 °C52 °F · 1,236 mm49 in
- Allentown 166 km · 11 °C52 °F · 1,233 mm49 in
- Paterson 174 km · 11 °C52 °F · 1,240 mm49 in
- Baltimore 188 km · 13 °C55 °F · 1,163 mm46 in
Frequently asked questions
What is the warmest month in Atlantic City?
July is the warmest month in Atlantic City, with an average high of 27 °C (80 °F) and an average low of 21 °C (71 °F).
What is the coldest month in Atlantic City?
January is the coldest month, with an average high of 5 °C (41 °F) and an average low of -1 °C (30 °F).
When does it rain the most in Atlantic City?
December is the wettest month with about 119 mm (4.7 in) of precipitation; January is the driest with about 81 mm (3.2 in).
What is the best time to visit Atlantic City?
Judging by long-term averages, the most comfortable months are June and September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.