Surf Forecasts:
How big are the waves at San Juan today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 6ft (1.9m), 10s period with N swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 6ft (1.9m), 10s period with N swell.
- Evening surf: Evening surf (18 Sep, local time) - 6.5ft (2.0m), 10s period with N swell.
The current surf forecast for San Juan at 4AM is: 2.0m 10s primary swell from a North direction and 0.6m 11s secondary swell from a Northwest direction (forecast issued at 12:00am September 18). The wind direction is predicted to be cross-onshore.
| Time (WEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 6ft (1.9m) | 10s |
| Afternoon (18 Sep) | 6ft (1.9m) | 10s |
| Evening (18 Sep) | 6.5ft (2.0m) | 10s |
Table - waves today at San Juan. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 23°C on Fri morning, min 21°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||||||||||
1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | N 9 | N 10 | N 10 | N 10 | N 10 | N 10 | N 10 | N 10 | N 9 | N 10 | N 9 | N 9 | N 9 | N 9 | N 9 | N 9 | N 8 | N 8 | N 8 | N 8 | NNW 14 | NNW 14 | NNW 13 | NNW 13 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 621 | 739 | 660 | 673 | 687 | 687 | 725 | 654 | 680 | 710 | 680 | 651 | 575 | 505 | 440 | 381 | 320 | 311 | 265 | 228 | 207 | 189 | 184 | 178 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | cross-on |
High Tide | 6:28AM1.74m | 7:06PM1.54m | 7:45AM1.61m | 8:54PM1.45m | 9:39AM1.60m | |||||||||||||||||||
Low Tide | 00:01AM0.78m | 12:45PM0.84m | 1:01AM0.94m | 2:21PM0.96m | 2:52AM1.02m | 4:23PM0.92m | ||||||||||||||||||
 |  | |  | |  | | | | | | | | | |  | | | | | | | | | |
 | — | — | 7:39 | — | — | — | — | — | — | — | 7:39 | — | — | — | — | — | — | — | 7:41 | — | — | — | — | — |
 | — | — | — | — | — | — | 7:55 | — | — | — | — | — | — | — | 7:54 | — | — | — | — | — | — | — | 7:53 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 22 | 22 | 23 | 23 | 22 | 23 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 22 | 21 | 21 | 22 | 22 | 23 | 23 | 23 | 22 |
Feels °C | 18 | 19 | 18 | 19 | 20 | 20 | 19 | 20 | 20 | 19 | 20 | 20 | 21 | 21 | 22 | 22 | 21 | 21 | 22 | 22 | 24 | 24 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 11 | NNW 11 | NW 11 | NNW 11 | NNW 10 | NW 10 | NNW 10 | NNW 10 | NW 16 | N 9 | N 9 | N 9 | N 9 | N 9 | N 9 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 |
| kJ | 133 | 99 | 107 | 94 | 75 | 68 | 50 | 68 | 40 | 10 | 680 | 651 | 575 | 505 | 440 | 381 | 320 | 311 | 265 | 228 | 190 | 156 | 152 | 127 |
Swell 2 Height (m) Direction Period (s) | — | — | NW 9 | — | — | — | — | N 16 | N 16 | N 20 | NNW 15 | NNW 14 | NNW 14 | NNW 13 | N 16 | NNW 16 | NNW 15 | NNW 15 | NNW 15 | NNW 14 | NNW 14 | NNW 14 | NNW 13 | NNW 13 |
| kJ | — | — | 23 | — | — | — | — | 5 | 5 | 8 | 21 | 41 | 36 | 57 | 137 | 256 | 246 | 246 | 222 | 215 | 207 | 189 | 184 | 178 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | N 19 | N 18 | NNW 18 | NNW 17 | N 12 | NNW 11 | NNW 11 | — | — | — | — | — | NE 7 | NE 7 |
| kJ | — | — | — | — | — | — | — | — | — | — | 29 | 26 | 62 | 99 | 76 | 24 | 71 | — | — | — | — | — | 8 | 17 |
Wind waves Height (m) Direction Period (s) | N 9 | N 10 | N 10 | N 10 | N 10 | N 10 | N 10 | N 10 | N 9 | N 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 621 | 739 | 660 | 673 | 687 | 687 | 725 | 654 | 680 | 710 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 326 | 231 | 231 | 231 | 231 | 231 | 231 | 38 | 149 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 9 | 16 | 16 | 9 | 9 | 10 | 10 |
Best forecast wave conditions in Lanzarote | ||||||||||||||||||||||||
Best forecast wave conditions in Spain (Africa) | ||||||||||||||||||||||||
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