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. National lists: cleanest beaches in the US and beaches that exceed bacteria limits most often.
New Hampshire beaches on the map
Ways to pick a New Hampshire beach
Cleanest water (Grade A)
- Seabrook Town Beach — Rockingham
- Sawyer Beach — Rockingham
| 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. A grade is a multi-year classification, not a same-day safety clearance.
New Hampshire beach grade updates
Get new grades and water-quality updates for New Hampshire beaches by email.
Where to stay near New Hampshire beaches
Find beachfront hotels, condos, and vacation rentals across New Hampshire — live availability and prices.
Top-rated places to stay near New Hampshire beaches
Prices for Oct 2–4, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Watch New Hampshire beach grades
Get an email when a graded New Hampshire beach posts a new sample or swim advisory.
Frequently Asked Questions
The table ranks New Hampshire beaches by Beach Safety Grade from EPA bacteria samples. Grade A beaches have the fewest exceedances of the safe-swimming limit.
Hotels, condos, and vacation rentals for New Hampshire beaches are on the map on this page. Compare water quality in the table, then book from the town you actually want to swim from.
New Hampshire beaches vary. Of 14 graded beaches, 2 earn an A for the fewest bacteria exceedances and 0 earn an F for exceeding the safe-swimming limit most often. A grade is a multi-year record, not a same-day clearance — check the county advisory the day you swim.
The day you swim. A grade is a history of samples, not a same-day clearance — check the county advisory before you get in.