Surf Forecasts:
How big are the waves at Block Island today (20 Sep):
- Morning surf: Morning surf (20 Sep, local time) - 2.5ft (0.7m), 7s period with ESE swell.
- Afternoon surf: Afternoon surf (20 Sep, local time) - 1.5ft (0.4m), 10s period with SE swell.
- Evening surf: Evening surf (20 Sep, local time) - 1.5ft (0.4m), 10s period with SE swell.
The current surf forecast for Block Island at 1AM is: 0.3m 11s primary swell from a Southeast direction and 0.4m 7s secondary swell from a Southeast direction, 0.5m 4s secondary swell from a East direction (forecast issued at 07:00pm September 19). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | 2.5ft (0.7m) | 7s |
| Afternoon (20 Sep) | 1.5ft (0.4m) | 10s |
| Evening (20 Sep) | 1.5ft (0.4m) | 10s |
Table - waves today at Block Island. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 28mm), heaviest during Sun night. Very mild (max 19°C on Sun afternoon, min 14°C on Mon morning). Winds increasing (light winds from the S on Sun night, strong winds from the ENE by Tue morning). | |||||||||||||||||||
Sat 19 | Sunday 20 | Monday 21 | |||||||||||||||||
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) | ESE 8 | ESE 8 | ESE 8 | SE 11 | SE 11 | ESE 7 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 7 | SE 6 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 23 | 23 | 23 | 19 | 18 | 43 | 18 | 28 | 26 | 26 | 26 | 35 | 26 | 54 | 68 | 64 | 86 | 73 | 58 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross |
High Tide | 3:24PM0.75m | 3:49AM0.61m | 4:27PM0.76m | 4:52AM0.66m | 5:17PM0.78m | ||||||||||||||
Low Tide | 10:08PM0.27m | 9:50AM0.27m | 10:58PM0.24m | 10:54AM0.24m | |||||||||||||||
 |  | |  | | | |  | | |  |  | | | |  | | |  | |
 | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — |
 | 6:49 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:45 | — | — |
mm | — | — | — | — | — | — | — | 1 | 1 | — | 4 | 15 | 4 | — | — | — | — | — | — |
Temp °C | 16 | 16 | 15 | 15 | 16 | 17 | 18 | 19 | 18 | 19 | 19 | 19 | 15 | 14 | 14 | 17 | 17 | 16 | 16 |
Feels °C | 13 | 12 | 11 | 11 | 13 | 13 | 14 | 15 | 15 | 16 | 18 | 21 | 9 | 8 | 7 | 10 | 9 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 9 | SE 6 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 |
| kJ | 23 | 23 | 23 | 11 | 10 | 18 | 18 | 28 | 26 | 26 | 26 | 15 | 26 | 54 | 68 | 64 | 86 | 73 | 58 |
Swell 2 Height (m) Direction Period (s) | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | ESE 7 | SE 8 | ESE 7 | ESE 7 | ESE 7 | SE 7 | SSE 8 | SE 8 | ESE 8 | E 8 | — | — | — | — |
| kJ | 5 | 5 | 5 | 19 | 18 | 10 | 3 | 9 | 9 | 9 | 11 | 7 | 11 | 13 | 5 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | SE 9 | — | — | — | SE 9 | SE 8 | SSE 8 | SSE 8 | SE 11 | ESE 8 | ESE 11 | — | — | — | — | — |
| kJ | — | — | — | 3 | — | — | — | 3 | 2 | 7 | 7 | 18 | 7 | 11 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ENE 5 | E 4 | E 4 | E 4 | ESE 4 | ESE 7 | SE 4 | SE 4 | SE 4 | SE 4 | SSE 4 | SE 7 | — | NE 2 | NE 4 | NE 5 | NE 5 | NE 6 | ENE 6 |
| kJ | 20 | 13 | 10 | 7 | 8 | 43 | 14 | 16 | 16 | 14 | 11 | 35 | — | 1 | 39 | 85 | 107 | 154 | 181 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1156 | 198 | 198 | 846 | 846 | 844 | 198 | 844 | 844 | 1084 | 198 | 24 | 304 | 377 | 605 | 634 | 634 | 204 | 605 |
Best forecast wave conditions in Rhode Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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