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Derrs Surf Forecast
/ WA – Perth City (29 breaks) / Western Australia (159 breaks) /
Surf Forecasts:
Derrs surfForecast / WA – Perth City / Australia
48hr Weather and Surf, issued 7 pm Monday 18 May 2026 AWSTForecast update in hr min s Forecast update imminent
Derrs surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Derrs sea temperature is
21.0° C
(Which is slightly cooler than normal)How big are the waves at Derrs today?
The current surf forecast for Derrs at 10PM is: 1.0m 17s primary swell from a West-southwest direction and 1.3m 11s secondary swell from a Southwest direction, 0.4m 4s secondary swell from a South direction (forecast issued at 07:00pm May 18). The wind direction is predicted to be cross-offshore and the swell rating is 3.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | - | - |
| Afternoon (18 May) | 3ft (0.9m) | 18s |
| Evening (18 May) | 3ft (0.9m) | 17s |
Table - waves today at Derrs. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 23°C on Tue afternoon, min 16°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 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 | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WSW 18 | WSW 18 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 16 | WSW 16 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | |
454 | 486 | 543 | 619 | 635 | 724 | 838 | 817 | 815 | 1225 | 1208 | 1145 | 1145 | 1130 | 1130 | 1010 | 982 | 463 | 463 | 1042 | 1159 | 1370 | 1504 | 1582 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross | cross-off | off | off | off | cross-off | glassy | cross-on | off | cross-off | cross-off | cross-off | cross-off | cross-off | on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-on | |
High Tide | 10:15AM0.77m | 10:54AM0.72m | 11:27AM0.65m | |||||||||||||||||||||
Low Tide | 7:52PM-0.04m | 9:19PM-0.02m | 10:35PM0.01m | |||||||||||||||||||||
 |  | | | | | | | | | | | | | |  | |  | | | | |  | | |
 | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:01 | — | — | — |
 | 5:27 | — | — | — | — | — | — | — | 5:27 | — | — | — | — | — | — | — | 5:25 | — | — | — | — | — | — | 5:25 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 18 | 17 | 17 | 16 | 16 | 21 | 23 | 22 | 21 | 20 | 18 | 18 | 17 | 21 | 22 | 21 | 21 | 20 | 20 | 19 | 19 | 20 | 20 |
16 | 16 | 15 | 16 | 14 | 14 | 18 | 21 | 20 | 18 | 16 | 13 | 13 | 14 | 18 | 19 | 18 | 18 | 17 | 18 | 16 | 17 | 16 | 15 | |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 |
 kJ | 389 | 429 | 360 | 403 | 373 | 373 | 838 | 817 | 815 | 1225 | 1208 | 1145 | 1145 | 1130 | 1130 | 1010 | 982 | 437 | 437 | 1042 | 1159 | 1370 | 1504 | 1582 |
Swell 2 Height (m) Direction Period (s) | WSW 18 | WSW 18 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | SW 11 | WSW 11 | SW 11 | WSW 10 | WSW 11 | — | — | — | — | — | — | WSW 16 | WSW 16 | — | — | — | — | — |
| kJ | 454 | 486 | 543 | 619 | 635 | 724 | 366 | 335 | 273 | 173 | 218 | — | — | — | — | — | — | 463 | 463 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | S 4 | — | — | — | — | — | — | — | — | NNE 3 | N 3 | N 3 | NNW 3 | — | — | — | — | — | — | — | — | SSW 4 |
| kJ | — | — | 4 | — | — | — | — | — | — | — | — | 1 | 5 | 3 | 3 | — | — | — | — | — | — | — | — | 16 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 46 | 186 | 104 | 0 | 0 | 0 | 0 | 0 | 0 | 48 | 0 | 0 | 45 | 0 | 0 | 0 | 45 | 41 | 0 | 0 | 0 | 0 | 13 |
Best forecast wave conditions in Perth City Coast | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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