Swell Intel

Costellos Surf Forecast, New Hampshire

New Hampshire

Linkys1-2ftRye Rocks1-2ftThe Wall1-2ft
Costellos surf spot

Current Conditions

Poor
Wave Height
1-2ft
ankle to knee high
Swell Period
4.1s
Wind
6mph
NNE / Gusts 10mph
Conditions
Poor
Active Swells
Primary
1.7ft @ 6sSSE
Wind Swell
2.7ft @ 4sENE

Nearest Webcam

Daily Forecast

3 of 5 days
Tue, Mar 311-2ft
Poor

Pretty quiet out there — 1-2ft and mostly poor with 9mph N winds.

6am9am12pm3pm
6s SSE|9mph N
Wed, Apr 11-2ft
Poor

A slow one — 1-2ft waves and poor conditions with light winds out of the SE. Expect the wind to bump up to around 10mph by PM.

6am9am12pm3pm
5s ENE|3-10mph SSW
Thu, Apr 22-3ft
Poor

Patience pays off today — morning is poor with 1-2ft. Things come together by the afternoon with 2-3ft at poor - fair.

6am9am12pm3pm
7s SE|9-12mph ENE
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Sat
3ft
Swell building Fri, Apr 3Fair

6s period — conditions are improving beyond your forecast

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Forecast Charts

Costellos Surf Spot Guide

Break
Beach
Bottom
Sand
Level
Beginner
Crowd
Light
Best Swell
NE
Best Wind
NW
Season
Fall

Costellos is a sheltered beach break on New Hampshire's Atlantic coast that catches swell wrapping around the rocky headlands of the region. The northwest-facing exposure means this spot works best with northeast swell and southwestern offshore winds, offering mellow, rolling waves ideal for learning and progression. This quiet New England beach break provides a peaceful alternative to more crowded New England surf zones, with consistent small to medium waves during fall and winter swells.

Rocky outcropsCold water temperaturesSeasonal rip currents

Wave heights shown are breaking wave heights — the actual rideable wave size at this spot.

Costellos Surf Forecast FAQ

What is the current surf forecast for Costellos?
The current wave height at Costellos is 1-2ft with a 4.1s swell period. Wind is NNE at 6mph. Conditions are rated Poor.
How accurate is the Costellos surf forecast?
Our Costellos forecast uses NOAA GFS and other weather models combined with spot-specific bathymetry to calculate breaking wave heights. Short-range (1-3 day) forecasts are most reliable. Extended forecasts show general trends.
What is the breaking wave height at Costellos?
The current breaking wave height at Costellos is 1-2ft, produced by a 1.7ft SSE primary swell at 6s, a 2.7ft ENE wind swell swell at 4s. Breaking wave height is the actual rideable wave size at the shore — calculated from offshore swell data using this spot's coastal bathymetry — not the raw buoy reading.
When is the best time to surf Costellos?
Based on the current 5-day forecast, the best window to surf Costellos is Friday from 7 AM to 10 AM with 3ft waves, a 5.95s swell period, and conditions rated Fair. Check the hourly forecast for updates as conditions can shift.