Surf Forecasts:
How big are the waves at Block Island today (21 Sep):
- Morning surf: Morning surf (21 Sep, local time) - 1ft (0.3m), 9s period with SE swell.
- Afternoon surf: Afternoon surf (21 Sep, local time) - 1.5ft (0.5m), 9s period with SE swell.
- Evening surf: Evening surf (21 Sep, local time) - 2ft (0.6m), 8s period with SE swell.
The current surf forecast for Block Island at 3AM is: 0.3m 9s primary swell from a East-southeast direction and 0.6m 4s secondary swell from a East-southeast direction, 0.3m 4s secondary swell from a South-southwest direction (forecast issued at 07:00pm September 20). The wind direction is predicted to be glassy.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Sep) | 1ft (0.3m) | 9s |
| Afternoon (21 Sep) | 1.5ft (0.5m) | 9s |
| Evening (21 Sep) | 2ft (0.6m) | 8s |
Table - waves today at Block Island. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 5mm), mostly falling on Sun night. Warm (max 20°C on Sun night, min 13°C on Tue night). Winds increasing (light winds from the SSW on Sun night, strong winds from the ENE by Wed morning). | |||||||||||||||||||
Sun 20 | Monday 21 | Tuesday 22 | |||||||||||||||||
5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | ESE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 8 | SE 8 | ENE 6 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 29 | 31 | 29 | 15 | 12 | 14 | 46 | 41 | 38 | 42 | 35 | 205 | 276 | 356 | 512 | 557 | 547 | 508 | 524 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross |
High Tide | 4:27PM0.76m | 4:52AM0.66m | 5:17PM0.78m | 5:42AM0.73m | 5:58PM0.82m | ||||||||||||||
Low Tide | 10:58PM0.24m | 10:54AM0.24m | 11:39PM0.19m | 11:45AM0.19m | |||||||||||||||
 |  | | | |  | | |  |  |  | | | | | | | | | |
 | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:33 | — | — | — | — | — | — |
 | 6:46 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:44 | — | — |
mm | 3 | 1 | 1 | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 20 | 19 | 19 | 15 | 14 | 15 | 18 | 17 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 13 |
Feels °C | 15 | 17 | 18 | 20 | 10 | 7 | 8 | 12 | 10 | 9 | 9 | 8 | 8 | 7 | 6 | 6 | 6 | 5 | 5 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | ESE 4 | SE 4 | SE 6 | SE 9 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | — | E 15 | E 14 | E 14 | E 14 | — | — |
| kJ | 27 | 27 | 27 | 13 | 12 | 14 | 46 | 41 | 38 | 42 | 35 | 38 | — | 4 | 4 | 4 | 4 | — | — |
Swell 2 Height (m) Direction Period (s) | SE 8 | ESE 7 | ESE 7 | ESE 9 | SE 6 | SE 9 | SW 5 | ESE 8 | SW 5 | — | — | — | — | — | — | — | — | — | — |
| kJ | 2 | 5 | 5 | 15 | 10 | 12 | 1 | 6 | 1 | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | SSE 9 | SSE 8 | SE 6 | SE 9 | ESE 8 | SW 5 | SW 5 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 7 | 7 | 6 | 12 | 14 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 4 | SE 4 | SE 4 | SSW 4 | — | NE 4 | NE 5 | NE 5 | NE 6 | ENE 6 | ENE 6 | ENE 6 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 |
| kJ | 29 | 31 | 29 | 3 | — | 19 | 71 | 122 | 182 | 216 | 193 | 205 | 276 | 356 | 512 | 557 | 547 | 508 | 524 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 606 | 219 | 163 | 85 | 435 | 605 | 642 | 642 | 645 | 767 | 769 | 769 | 634 | 767 | 775 | 691 | 1701 | 847 | 846 |
Best forecast wave conditions in Rhode Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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