Updated August 2026
Best beaches in New Hampshire by water quality
New Hampshire has 17 public beaches in the EPA monitoring dataset, 14 of them with enough bacteria samples to grade. 2 earn an A for consistently clean water. Full ranking below.
| Grade | Beach | County | % over limit | Samples | Advisory |
|---|---|---|---|---|---|
| A | Seabrook Town Beach | Rockingham | 0% | 51 | Excellent |
| A | Sawyer Beach | Rockingham | 0% | 36 | Excellent |
| B | Wallis Sands State Park | Rockingham | 4.4% | 270 | Good |
| B | Foss Beach | Rockingham | 6.5% | 46 | Good |
| B | Hampton Beach State Park | Rockingham | 7% | 201 | Good |
| C | North Beach | Rockingham | 7.8% | 128 | Fair |
| C | Hampton Harbor Beach | Rockingham | 8.8% | 181 | Fair |
| C | Bass Beach | Rockingham | 11% | 73 | Fair |
| C | Northside Park | Rockingham | 11.2% | 214 | Fair |
| C | Jenness State Beach | Rockingham | 11.7% | 205 | Fair |
| D | New Castle Town Beach | Rockingham | 13.7% | 270 | Poor |
| D | Wallis Sands Beach At Wallis Road | Rockingham | 14.2% | 127 | Poor |
| D | Jenness Beach At Cable Road | Rockingham | 16.5% | 79 | Poor |
| D | North Hampton State Beach | Rockingham | 20.2% | 99 | Poor |
Download the full New Hampshire beach safety ranking
All 14 graded New Hampshire beaches with their Beach Safety Grade, exceedance rate, sample counts, and program status — from EPA monitoring data. Enter your email to download; you'll also get swim-advisory alerts. A grade is a multi-year classification, not a same-day safety clearance.
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