Surf Forecasts:
How big are the waves at Porth Dinllaen today (31 Jul):
- Morning surf: Morning surf (31 Jul, local time) - 1.5ft (0.5m), 4s period with W swell.
- Afternoon surf: Afternoon surf (31 Jul, local time) - 1.5ft (0.4m), 3s period with SW swell.
- Evening surf: Evening surf (31 Jul, local time) - 2.5ft (0.8m), 5s period with SW swell.
The current surf forecast for Porth Dinllaen at 11AM is: 0.5m 4s primary swell from a West direction (forecast issued at 06:00am July 31). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Jul) | 1.5ft (0.5m) | 4s |
| Afternoon (31 Jul) | 1.5ft (0.4m) | 3s |
| Evening (31 Jul) | 2.5ft (0.8m) | 5s |
Table - waves today at Porth Dinllaen. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 18°C on Fri night, min 13°C on Fri night). Wind will be generally light. | |||||||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | |||||||||||||||||||||
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) | WNW 3 | SW 5 | W 4 | W 4 | SW 3 | SW 4 | WSW 5 | SW 5 | SW 5 | SW 5 | SW 5 | W 4 | SW 5 | SW 4 | SW 4 | SW 4 | SW 4 | SW 4 | WSW 4 | W 8 | SW 8 | SW 8 | SW 8 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 1 | 3 | 7 | 4 | 2 | 14 | 50 | 24 | 19 | 11 | 9 | 7 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 3 | 3 | 3 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross | cross | cross-on | on | on | on | cross-on | cross-on | cross-off | cross-off | cross-off | off | off | cross-off | off | glassy | cross-on | cross | cross |
High Tide | 10:31AM3.33m | 10:46PM3.78m | 11:03AM3.36m | 11:18PM3.81m | 11:36AM3.37m | ||||||||||||||||||
Low Tide | 5:24PM0.36m | 5:54AM0.23m | 5:58PM0.37m | 6:29AM0.25m | 6:33PM0.45m | ||||||||||||||||||
 |  | | | |  |  | | | | | | | |  | | | |  | | | | | |
 | 5:33 | — | — | — | — | — | — | — | 5:35 | — | — | — | — | — | — | — | 5:35 | — | — | — | — | — | — |
 | — | — | — | — | — | 9:14 | — | — | — | — | — | — | — | 9:12 | — | — | — | — | — | — | — | 9:10 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 14 | 14 | 14 | 15 | 17 | 18 | 15 | 14 | 13 | 14 | 14 | 15 | 16 | 15 | 15 | 15 | 15 | 16 | 18 | 17 | 17 | 17 |
Feels °C | 11 | 11 | 11 | 11 | 10 | 12 | 14 | 11 | 11 | 10 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 15 | 18 | 14 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 4 | SW 5 | — | — | WNW 4 | — | SW 5 | SW 5 | SW 5 | SW 5 | SW 5 | — | NW 4 | — | SW 4 | SW 4 | SW 4 | SW 4 | WSW 4 | — | — | SW 8 | SW 8 |
| kJ | 1 | 3 | — | — | 1 | — | 26 | 24 | 19 | 11 | 9 | — | 2 | — | 2 | 2 | 2 | 2 | 1 | — | — | 3 | 3 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 12 | W 11 | W 10 | — | W 9 | W 9 | W 9 | — | W 9 | W 9 | W 8 | W 8 | W 8 | SW 8 | — | — |
| kJ | — | — | — | — | — | — | — | 3 | 2 | 2 | — | 2 | 2 | 2 | — | 2 | 1 | 1 | 1 | 1 | 3 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 9 | W 9 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 3 | NW 3 | W 4 | W 4 | SW 3 | SW 4 | WSW 5 | — | — | NW 4 | NW 4 | W 4 | SW 5 | SW 4 | — | — | — | — | — | — | — | — | — |
| kJ | 1 | 3 | 7 | 4 | 2 | 14 | 50 | — | — | 3 | 4 | 7 | 3 | 3 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 141 | 321 | 324 | 332 | 627 | 597 | 204 | 328 | 141 | 150 | 321 | 321 | 332 | 320 | 311 | 282 | 282 | 282 | 282 | 282 | 282 | 269 | 127 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||||
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