Diamond Beach, New Jersey has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.2 °F (low) to 62.8 °F (high). Annual precipitation averages 44.4 Inches. Diamond Beach is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.2 °F | 42.6 °F | 3.26 in. |
| February | 29.7 °F | 43.7 °F | 2.76 in. |
| March | 36.0 °F | 49.9 °F | 4.3 in. |
| April | 45.5 °F | 59.2 °F | 3.46 in. |
| May | 54.7 °F | 68.7 °F | 3.59 in. |
| June | 64.2 °F | 77.8 °F | 3.54 in. |
| July | 69.5 °F | 83.0 °F | 4.23 in. |
| August | 68.8 °F | 81.8 °F | 4.21 in. |
| September | 63.4 °F | 76.7 °F | 3.3 in. |
| October | 52.8 °F | 66.3 °F | 4.31 in. |
| November | 42.2 °F | 56.1 °F | 3.3 in. |
| December | 34.3 °F | 47.6 °F | 4.13 in. |
| Annual | 49.2 °F | 62.8 °F | 44.39 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |