Surf Forecasts:
Block Island surf forecast from 31 Jul 2026:
- Best quality surf: Friday 31 Jul, 5AM (local time) - 3.5ft (1.1m), 8s period, S swell with cross-offshore winds.
- Most powerful swell: Friday 31 Jul, 8AM (local time) - 3.5ft (1.1m), 9s period, S swell with 190 kJ wave energy.
- Next surfable swell (1★+): Friday 31 Jul, 5AM (local time) - 3.5ft (1.1m), 8s period with S swell.
Best Forecast Surf Conditions for Block Island this week:
The surf forecast for Block Island over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jul 31) at 5AM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.3m and 6s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Block Island in the next 16 days are 1.1m 9s and forecast to arrive on Friday (Jul 31) at 8AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Tuesday (Aug 04) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Fri 31st Jul) | 3.5ft (1.1m) 8s |
| Best Surf | 5AM (Fri 31st Jul) | 3.5ft (1.1m) 8s |
| Most Powerful | 8AM (Fri 31st Jul) | 3.5ft (1.1m) 9s |
Table - best surf conditions forecast for Block Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the table for the Block Island area over the next couple of weeks.
Gotta be straight with you—this is a bleak outlook. The whole 16-day window is a write-off for any decent surf. There's not a single session that gets the nod. From Friday the 31st of July right through to Saturday the 15th of August, it's a flat, choppy, and wind-blown mess. That's a solid 16-day gap with no recommendations.
The problem is consistent: the swell is tiny, mostly hanging around 1 foot to 4 feet, and when there is a little bit of energy, the wind is just wrecking it. It's cross-onshore almost every day, sometimes fresh and lumpy, making it a battle just to get a chop-hop. The combined swell energy is weak, barely cracking 100 in most spots, and often sitting in the 20s and 30s (e.g., 21 to 165). The water temperature is about average for this time of year, nothing unusual there.
To be honest, with the combination of poor surf quality, persistent onshore wind, and the beach/reef setup, this looks more like a kite-surfing window than a paddling one. You'd be mad to drag a board down there for this.
The only tiny glimmer is on Tuesday the 11th of August morning, when we get a gentle offshore wind from the north and clean conditions, but the swell is a pathetic 3 feet from the SSW with a short period of 5 seconds. It's clean, but there's hardly any wave to ride. The other morning on the 12th of August is also clean with an offshore, but the swell drops to 1 foot.
Overall, it's a total dud. A blank run like this is more normal for the area when the summer patterns lock in. Forecasts can change, but for now, leave the boards in the shed and go fishing.
Rusty
Short Range ForecastMostly dry. Warm (max 24°C on Sat morning, min 19°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Mon night. Warm (max 25°C on Wed afternoon, min 22°C on Tue afternoon). Winds decreasing (fresh winds from the SSW on Mon night, light winds from the WSW by Wed morning). | ||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||
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) | S 8 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | SSW 7 | S 7 | S 7 | SSW 4 | S 7 | S 7 | S 7 | S 7 | S 7 | S 6 | S 6 | SE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 137 | 158 | 136 | 108 | 134 | 124 | 42 | 67 | 23 | 24 | 25 | 155 | 181 | 124 | 97 | 59 | 30 | 20 | 16 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 9:22PM0.93m | 9:50AM0.84m | 9:54PM0.92m | 10:22AM0.87m | 10:28PM0.90m | 10:55AM0.89m | 11:07PM0.87m | 11:33AM0.91m | 11:50PM0.83m | 12:17PM0.93m | 00:39AM0.78m | 1:08PM0.94m | 1:35AM0.74m | ||||||
Low Tide | 3:42AM0.04m | 3:37PM0.11m | 4:06AM0.04m | 4:15PM0.11m | 4:32AM0.04m | 4:56PM0.12m | 5:02AM0.05m | 5:42PM0.13m | 5:39AM0.06m | 6:38PM0.14m | 6:24AM0.07m | 7:51PM0.16m | |||||||
 | | |  | | |  |  |  | |  | |  | | |  |  | | | |
 | — | 5:39 | — | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — |
 | 8:05 | — | 8:04 | — | — | 8:02 | — | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — |
mm | — | — | — | — | — | — | — | — | — | — | 2 | — | 3 | — | — | 1 | 1 | — | — |
Temp °C | 21 | 20 | 22 | 23 | 24 | 24 | 24 | 23 | 23 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 24 | 25 | 25 |
Feels °C | 23 | 21 | 21 | 22 | 25 | 23 | 23 | 24 | 24 | 26 | 24 | 24 | 23 | 23 | 23 | 24 | 26 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 9 | S 8 | S 8 | SE 9 | SE 7 | S 8 | SE 7 | S 7 | S 7 | SSE 8 | — | S 7 | S 7 | S 7 | S 7 | S 6 | S 6 | SE 8 |
| kJ | 137 | 158 | 136 | 108 | 19 | 7 | 42 | 17 | 23 | 24 | 24 | — | 181 | 124 | 97 | 59 | 30 | 20 | 16 |
Swell 2 Height (m) Direction Period (s) | ENE 6 | ENE 6 | E 6 | SE 9 | E 6 | SE 8 | SE 7 | SE 9 | SE 7 | SE 6 | SE 8 | E 8 | — | SE 8 | SE 8 | SE 8 | SE 7 | SE 7 | SSW 6 |
| kJ | 7 | 7 | 3 | 13 | 1 | 11 | 16 | 3 | 17 | 10 | 11 | 1 | — | 3 | 3 | 10 | 17 | 12 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | ESE 9 | E 6 | SE 7 | E 5 | SE 9 | S 9 | SE 9 | SE 9 | E 8 | — | — | E 9 | E 9 | — | E 11 | SE 8 | E 11 |
| kJ | — | — | 9 | 3 | 7 | 1 | 3 | 2 | 3 | 12 | 1 | — | — | 2 | 2 | — | 2 | 3 | 2 |
Wind waves Height (m) Direction Period (s) | — | — | — | SW 4 | S 8 | S 8 | SSW 4 | SSW 7 | SSW 4 | S 4 | SSW 4 | S 7 | — | NE 3 | — | — | — | — | — |
| kJ | — | — | — | 8 | 134 | 124 | 13 | 67 | 9 | 11 | 25 | 155 | — | 2 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 24 | 24 | 24 | 24 | 24 | 634 | 249 | 26 | 1148 | 1222 | 249 | 216 | 26 | 26 | 24 | 24 | 642 | 767 | 769 |
Best forecast wave conditions in Rhode Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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Information about the Block Island Surf forecast
The above surf forecast table for Block Island provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Block Island can be found by selecting the local surf guide option on the grey menu. Our Block Island 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 (Block Island) 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 Block Island 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.
Block Island is 33 km (20 miles) from Westerly. If you plan a vacation in Rhode Island, look for hotels and other accommodation in Westerly. Westerly has rooms for a wide range of budgets as well as car hire and transport links.
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