Surf Forecasts:
How big are the waves at Block Island today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 1.5ft (0.4m), 8s period with SE swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 0.5ft (0.1m), 14s period with SE swell.
- Evening surf: Evening surf (21 Aug, local time) - 1ft (0.3m), 5s period with S swell.
The current surf forecast for Block Island at 12PM is: 0.4m 8s primary swell from a Southeast direction and 0.2m 5s secondary swell from a South direction (forecast issued at 07:00am August 21). An open ocean swell of 1.7m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 1.5ft (0.4m) | 8s |
| Afternoon (21 Aug) | 0.5ft (0.1m) | 14s |
| Evening (21 Aug) | 1ft (0.3m) | 5s |
Table - waves today at Block Island. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 5mm), mostly falling on Fri morning. Warm (max 25°C on Sun night, min 19°C on Fri afternoon). Winds decreasing (strong winds from the NE on Fri morning, light winds from the NNE by Sat afternoon). | |||||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||||||||
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 | 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 9 | SE 8 | SE 8 | SE 14 | ENE 6 | S 5 | S 5 | S 5 | SE 8 | E 5 | ESE 8 | E 5 | ENE 5 | SE 9 | SE 9 | SE 9 | SE 13 | SE 12 | SE 12 | SE 12 | SE 12 | SE 6 | SE 6 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 19 | 18 | 18 | 8 | 239 | 8 | 8 | 7 | 17 | 36 | 12 | 17 | 14 | 13 | 13 | 13 | 25 | 24 | 23 | 23 | 22 | 64 | 85 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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-off | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 3:09AM0.60m | 4:02PM0.79m | 4:20AM0.60m | 5:03PM0.80m | 5:21AM0.64m | 5:53PM0.83m | |||||||||||||||||
Low Tide | 8:42AM0.25m | 10:43PM0.26m | 10:14AM0.24m | 11:34PM0.23m | 11:15AM0.22m | ||||||||||||||||||
 |  |  | | |  | | | | | | | |  | | | | |  |  | |  |  | |
 | 6:01 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | — | 7:37 | — | — | — | — | — | — | — | 7:35 | — | — | — | — | — | — | — | 7:34 | — | — |
mm | 4 | 2 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 1 | — |
Temp °C | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 19 | 19 | 19 | 20 | 21 | 23 | 24 | 24 | 25 | 25 |
Feels °C | 18 | 17 | 15 | 15 | 14 | 15 | 16 | 17 | 17 | 17 | 19 | 22 | 21 | 19 | 19 | 19 | 20 | 21 | 25 | 24 | 24 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 8 | SE 8 | SSE 5 | SW 5 | S 5 | S 5 | SE 14 | SE 8 | E 5 | ESE 8 | E 5 | ESE 8 | ESE 8 | ENE 5 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | SE 8 | SE 8 | SE 6 | SE 6 |
| kJ | 19 | 18 | 18 | 3 | 1 | 5 | 5 | 7 | 17 | 36 | 12 | 17 | 11 | 11 | 5 | 11 | 10 | 11 | 10 | 11 | 11 | 64 | 85 |
Swell 2 Height (m) Direction Period (s) | S 5 | S 6 | S 5 | SSW 6 | SE 14 | SE 14 | SE 14 | S 5 | SE 14 | ESE 8 | SE 13 | ESE 8 | SE 9 | SE 9 | ESE 8 | SE 9 | SE 13 | SE 8 | SE 8 | ESE 7 | SE 12 | SE 12 | SE 12 |
| kJ | 2 | 2 | 2 | 3 | 8 | 8 | 8 | 4 | 7 | 12 | 7 | 12 | 3 | 13 | 11 | 13 | 25 | 11 | 11 | 5 | 22 | 22 | 22 |
Swell 3 Height (m) Direction Period (s) | — | — | SW 6 | SE 14 | SE 14 | SE 14 | SE 14 | SE 14 | SW 5 | SE 9 | SE 10 | SE 13 | SE 13 | SE 13 | SE 9 | SE 13 | SSE 9 | SE 12 | SE 12 | SE 12 | ESE 7 | SE 8 | — |
| kJ | — | — | 1 | 8 | 8 | 8 | 8 | 7 | 1 | 3 | 4 | 7 | 7 | 7 | 13 | 6 | 7 | 24 | 23 | 23 | 5 | 3 | — |
Wind waves Height (m) Direction Period (s) | ENE 4 | NE 4 | ENE 5 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | NNE 4 | NE 5 | NNE 4 | ENE 5 | ENE 5 | — | ENE 5 | ENE 5 | ENE 2 | ENE 3 | S 3 | SSE 4 | SW 4 | SW 4 |
| kJ | 20 | 44 | 119 | 253 | 239 | 215 | 162 | 131 | 93 | 18 | 49 | 5 | 14 | 9 | — | 5 | 5 | 2 | 2 | 5 | 18 | 6 | 26 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 207 | 207 | 634 | 1008 | 1008 | 24 | 24 | 25 | 25 | 152 | 846 | 152 | 144 | 144 | 138 | 152 | 195 | 195 | 702 | 236 | 237 | 133 | 25 |
Best forecast wave conditions in Rhode Island | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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