Surf Forecasts:
K38 and 39 surf forecast from 13 Aug 2026:
- Best quality surf: Monday 17 Aug, 8AM (local time) - 5.5ft (1.7m), 7s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 17 Aug, 5AM (local time) - 7ft (2.1m), 7s period, SSW swell with 475 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 8AM (local time) - 5.5ft (1.7m), 7s period with SSW swell.
Best Forecast Surf Conditions for K38 and 39 this week:
The surf forecast for K38 and 39 over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 8AM. The primary swell is predicted to be 1.7m and 7s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at K38 and 39 in the next 16 days are 2.1m 7s and forecast to arrive on Monday (Aug 17) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Aug 15) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Mon 17th Aug) | 5.5ft (1.7m) 7s |
| Best Surf | 8AM (Mon 17th Aug) | 5.5ft (1.7m) 7s |
| Most Powerful | 5AM (Mon 17th Aug) | 7ft (2.1m) 7s |
Table - best surf conditions forecast for K38 and 39 over the next 16 days.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu morning. Warm (max 28°C on Thu afternoon, min 18°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 14mm), heaviest on Sun night. Warm (max 26°C on Mon afternoon, min 20°C on Mon night). Winds decreasing (fresh winds from the SW on Sun night, light winds from the NNW by Tue night). | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SW 4 | SW 4 | SSW 5 | SSW 5 | SW 5 | S 5 | SE 9 | SSW 6 | S 6 | SSW 6 | S 5 | SSW 7 | SSW 8 | SSW 8 | S 7 | SSW 6 | S 6 | SSE 11 | SE 11 | SE 10 | S 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 13 | 16 | 10 | 5 | 17 | 3 | 3 | 6 | 7 | 20 | 43 | 431 | 234 | 356 | 64 | 23 | 27 | 50 | 30 | 25 | 52 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | cross | cross-on | cross-off | cross-off | cross-on | on | cross-on | cross-on | on | cross-off | on | cross-off | off | cross-off | cross-off | glassy | on | cross-off |
High Tide | 8:42AM1.17m | 9:05PM1.23m | 9:29AM1.19m | 9:51PM1.17m | 10:15AM1.17m | 10:35PM1.09m | 11:01AM1.13m | 11:19PM0.99m | 11:47AM1.07m | 00:03AM0.89m | 12:35PM1.01m | 00:51AM0.80m | 1:26PM0.94m | 1:43AM0.73m | |||||||
Low Tide | 2:58PM-0.14m | 3:26AM-0.14m | 3:46PM-0.11m | 4:06AM-0.11m | 4:32PM-0.05m | 4:44AM-0.05m | 5:18PM0.02m | 5:20AM0.01m | 6:04PM0.11m | 5:56AM0.08m | 6:54PM0.20m | 6:33AM0.15m | 7:57PM0.27m | ||||||||
 |  |  |  | |  | | | | |  |  | | |  | | | | | | | |
 | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — |
 | — | 7:47 | — | — | 7:46 | — | — | 7:45 | — | — | 7:44 | — | — | 7:43 | — | — | 7:40 | — | — | 7:39 | — |
mm | 3 | — | — | — | — | 1 | — | — | — | — | — | 11 | — | — | 1 | — | 2 | — | — | — | — |
Temp °C | 23 | 28 | 26 | 25 | 27 | 26 | 21 | 23 | 21 | 22 | 22 | 24 | 23 | 26 | 25 | 23 | 23 | 22 | 23 | 26 | 24 |
Feels °C | 24 | 26 | 23 | 23 | 24 | 24 | 17 | 21 | 18 | 20 | 19 | 22 | 24 | 27 | 26 | 22 | 22 | 22 | 26 | 26 | 23 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SSW 5 | SSW 5 | SE 9 | SSW 4 | SE 9 | S 6 | S 6 | SE 9 | SE 8 | — | SSW 8 | SSW 8 | S 7 | SSW 6 | S 6 | SSE 11 | SE 11 | SE 10 | SE 9 |
| kJ | 3 | 3 | 10 | 5 | 3 | 1 | 3 | 3 | 7 | 3 | 3 | — | 234 | 201 | 64 | 23 | 27 | 50 | 30 | 25 | 13 |
Swell 2 Height (m) Direction Period (s) | SE 14 | SE 10 | SE 8 | SE 9 | S 13 | S 5 | S 6 | SE 9 | SE 9 | SE 6 | — | — | — | — | S 15 | SSE 7 | SSE 12 | SSE 6 | — | — | — |
| kJ | 7 | 4 | 3 | 3 | 3 | 2 | 1 | 3 | 3 | 2 | — | — | — | — | 4 | 21 | 15 | 11 | — | — | — |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 13 | SE 13 | S 13 | — | SE 9 | S 6 | — | SE 6 | — | — | — | — | — | S 15 | SSE 14 | SSE 8 | SSW 6 | — | — | — |
| kJ | 4 | 7 | 7 | 3 | — | 3 | 1 | — | 2 | — | — | — | — | — | 4 | 18 | 7 | 7 | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 4 | SW 4 | NW 3 | WNW 2 | SW 5 | N 3 | NNE 3 | SSW 6 | SSW 3 | SSW 6 | S 5 | SSW 7 | NW 3 | SSW 8 | NNW 2 | N 3 | — | — | S 6 | S 4 | S 5 |
| kJ | 13 | 16 | 3 | 1 | 17 | 1 | 2 | 6 | 2 | 20 | 43 | 431 | 4 | 356 | 1 | 2 | — | — | 15 | 12 | 52 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2417 | 68 | 2405 | 1047 | 3449 | 750 | 872 | 626 | 1713 | 1565 | 2505 | 236 | 0 | 2 | 0 | 2 | 100 | 0 | 44 | 357 | 2 |
Best forecast wave conditions in Rhode Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the K38 and 39 Surf forecast
The above surf forecast table for K38 and 39 provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at K38 and 39 can be found by selecting the local surf guide option on the grey menu. Our K38 and 39 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 (K38 and 39) 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 K38 and 39 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.
K38 and 39 is 8 km (5 miles) from Narragansett Pier. If you plan a vacation in Rhode Island, look for hotels and other accommodation in Narragansett Pier. Narragansett Pier has rooms for a wide range of budgets as well as car hire and transport links.
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