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Costellos Surf Forecast
/ New Hampshire (9 breaks) / New Hampshire (9 breaks) /
Costellos surfForecast / New Hampshire / USA
12 Day Weather and Surf, issued 7 pm Friday 18 Apr 2025 EDT
Best Forecast Surf Conditions for Costellos this week:
The surf forecast for Costellos over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Apr 18) at 11PM. The primary swell is predicted to be 1.1m and 5s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Costellos in the next 12 days are 1.4m 6s and forecast to arrive on Saturday (Apr 26) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Apr 20) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Fri 18th Apr) | 3.5ft (1.1m) 5s |
| Best Surf | 11PM (Fri 18th Apr) | 3.5ft (1.1m) 5s |
| Most Powerful | 2AM (Sat 26th Apr) | 4.5ft (1.4m) 6s |
Table - best surf conditions forecast for Costellos over the next 12 days.
Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | Wed 30 | |||||||||||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 6 | 7 | 7 | 7 | 9 | 9 | 7 | 8 | 3 | 5 | 5 | 5 | 6 | 9 | 4 | 8 | 8 | 8 | 9 | 9 | 5 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 9 | 7 | 11 | 10 | 10 | 6 | 10 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 75 | 126 | 102 | 50 | 30 | 20 | 4 | 3 | 6 | 28 | 35 | 34 | 39 | 12 | 16 | 21 | 10 | 10 | 13 | 20 | 68 | 139 | 114 | 78 | 57 | 14 | 12 | 8 | 8 | 7 | 4 | 9 | 10 | 60 | 9 | 14 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | off | off | cross- off | cross- off | cross- off | cross- on | cross- on | cross | off | off | off | cross- off | cross- on | cross- on | cross- on | on | glass | cross- on | cross- on | cross- on | cross- off | cross- off | cross- off | cross- off | cross- off | glass | cross- on | cross- on | cross- off | cross- off | cross- off | cross- off | cross | cross- off |
High Tide / height (m) | 3:47AM 2.96 | 4:34PM 2.61 | 4:37AM 2.90 | 5:27PM 2.60 | 5:34AM 2.88 | 6:24PM 2.67 | 6:35AM 2.92 | 7:21PM 2.82 | 7:36AM 3.02 | 8:15PM 3.04 | 8:35AM 3.16 | 9:07PM 3.30 | 9:32AM 3.32 | 9:57PM 3.55 | 10:27AM 3.45 | 10:47PM 3.77 | 11:20AM 3.55 | 11:37PM 3.91 | 12:13PM 3.59 | 12:28AM 3.97 | 1:07PM 3.55 | 1:20AM 3.93 | 2:01PM 3.46 | |||||||||||||
Low Tide / height (m) | 9:35PM 1.12 | 10:20AM 0.83 | 10:24PM 1.18 | 11:11AM 0.88 | 11:20PM 1.19 | 12:07PM 0.87 | 12:22AM 1.12 | 1:03PM 0.79 | 1:24AM 0.96 | 1:58PM 0.67 | 2:24AM 0.74 | 2:51PM 0.52 | 3:21AM 0.47 | 3:42PM 0.38 | 4:15AM 0.21 | 4:33PM 0.26 | 5:08AM -0.00 | 5:24PM 0.19 | 6:01AM -0.14 | 6:14PM 0.19 | 6:53AM -0.19 | 7:06PM 0.25 | 7:47AM -0.14 | |||||||||||||
Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | Wed 30 | |||||||||||||||||||||||||
| Sunrise | - | 5:54 | - | - | 5:54 | - | - | 5:52 | - | - | 5:50 | - | - | 5:48 | - | - | 5:47 | - | - | 5:46 | - | - | 5:43 | - | - | 5:43 | - | - | 5:41 | - | - | 5:39 | - | - | 5:39 | - |
| Sunset | - | - | 7:29 | - | - | 7:30 | - | - | 7:31 | - | - | 7:32 | - | - | 7:34 | - | - | 7:35 | - | - | 7:36 | - | - | 7:37 | - | - | 7:37 | - | - | 7:39 | - | - | 7:40 | - | - | 7:42 |
 |  |  |  |  | | | | |  |  | | | | |  | | | |  | |  | | | | | | | | | | | | | | | |
Rain (mm) | - | 1 | - | - | - | - | - | - | - | 3 | 1 | - | - | - | - | - | 1 | - | - | - | - | 18 | - | - | - | - | - | - | - | - | - | - | - | - | 3 | 4 |
| Temp. °C | 14 | 19 | 24 | 22 | 9 | 12 | 9 | 8 | 8 | 10 | 14 | 17 | 12 | 12 | 15 | 11 | 13 | 11 | 8 | 8 | 8 | 6 | 12 | 13 | 10 | 11 | 14 | 13 | 10 | 11 | 13 | 14 | 19 | 16 | 14 | 11 |
| Feels °C (?) | 7 | 16 | 21 | 19 | 2 | 4 | 3 | 3 | 1 | 5 | 12 | 12 | 7 | 9 | 13 | 8 | 11 | 7 | 6 | 4 | 3 | 2 | 8 | 6 | 3 | 6 | 8 | 10 | 6 | 5 | 8 | 8 | 12 | 11 | 11 | 8 |
Short Range Forecast: Some drizzle, heaviest during Sat morning. Warm (max 24°C on Sat afternoon, min 5°C on Mon morning). Winds decreasing (fresh winds from the NW on Sun morning, calm by Mon morning). | Days 3-6 Weather Summary Light rain (total 5mm), mostly falling on Mon night. Very mild (max 17°C on Tue afternoon, min 6°C on Tue night). Wind will be generally light. | Days 6-9 Weather Summary Moderate rain (total 18mm), heaviest on Fri night. Very mild (max 14°C on Sun afternoon, min 4°C on Fri night). Winds increasing (calm on Thu night, fresh winds from the WNW by Sat afternoon). | Long Range Forecast: Light rain (total 7mm), mostly falling on Wed afternoon. Very mild (max 19°C on Tue afternoon, min 6°C on Mon night). Winds increasing (calm on Mon morning, fresh winds from the SSW by Tue afternoon). | |||||||||||||||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Costellos surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Costellos Surf forecast
The above surf forecast table for Costellos provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Costellos can be found by selecting the local surf guide option on the grey menu. Our Costellos surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Costellos) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Costellos may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Costellos is 5 km (3 miles) from Hampton. If you plan a vacation in New Hampshire, look for hotels and other accommodation in Hampton. Hampton has rooms for a wide range of budgets as well as car hire and transport links.
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