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Thommos Surf Forecast
/ NSW – Illawarra (42 breaks) / New South Wales (297 breaks) /
Surf Forecasts:
Thommos surfForecast / NSW – Illawarra / Australia
48hr Weather and Surf, issued 9 am Monday 18 May 2026 AESTForecast update in hr min s Forecast update imminent
Thommos surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Thommos sea temperature is
19.9° C
(Which is normal for this time of year)How big are the waves at Thommos today?
The current surf forecast for Thommos at 4PM is: 2.2m 9s primary swell from a East-northeast direction (forecast issued at 09:00am May 18). The wind direction is predicted to be glassy and the swell rating is 3.
| Time (AEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 7.5ft (2.3m) | 9s |
| Afternoon (18 May) | 7ft (2.2m) | 9s |
| Evening (18 May) | 6.5ft (2.0m) | 9s |
Table - waves today at Thommos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 6mm), mostly falling on Mon night. Warm (max 20°C on Mon morning, min 13°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | 1 AM | 4 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | |
844 | 865 | 778 | 721 | 721 | 595 | 522 | 559 | 680 | 761 | 983 | 1045 | 872 | 794 | 810 | 734 | 641 | 562 | 500 | 424 | 432 | 377 | 356 | 356 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross-on | glassy | glassy | glassy | glassy | glassy | glassy | glassy | cross-off | cross-off | cross | cross-off | cross | cross | cross-off | cross-off | cross | cross | cross-on | cross | cross | cross | cross | |
High Tide | 9:20AM1.17m | 9:20PM1.77m | 10:17AM1.11m | 10:13PM1.73m | 11:17AM1.07m | 11:09PM1.65m | ||||||||||||||||||
Low Tide | 2:50PM0.25m | 4:14AM-0.04m | 3:41PM0.31m | 5:12AM-0.00m | 4:36PM0.37m | |||||||||||||||||||
 | | | |  | | |  | |  | | | | |  | |  | | | |  | | | | |
 | 6:43 | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:45 |
 | — | — | — | 5:00 | — | — | — | — | — | — | — | 5:00 | — | — | — | — | — | — | — | 4:59 | — | — | — | 4:59 |
— | — | — | — | 1 | 1 | 2 | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 19 | 20 | 19 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 16 | 17 | 16 | 15 | 14 | 16 | 17 | 17 | 16 | 15 | 14 | 14 |
18 | 18 | 20 | 20 | 18 | 17 | 17 | 17 | 17 | 16 | 15 | 14 | 13 | 14 | 13 | 13 | 12 | 12 | 11 | 12 | 11 | 10 | 9 | 9 | |
Swell 1 Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 |
 kJ | 844 | 865 | 778 | 721 | 721 | 595 | 522 | 559 | 680 | 761 | 983 | 1045 | 872 | 794 | 810 | 734 | 641 | 562 | 500 | 424 | 432 | 377 | 356 | 356 |
Swell 2 Height (m) Direction Period (s) | — | S 15 | — | — | S 15 | — | S 4 | S 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 4 | — | — | 4 | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | SSW 4 | — | SSW 4 | SW 3 | SW 3 | SSW 4 | S 6 | S 7 | S 8 | S 8 | S 8 | S 8 | S 8 | S 9 | S 9 | S 9 | S 8 | S 8 |
| kJ | — | — | — | — | — | — | 2 | — | 2 | 2 | 9 | 41 | 279 | 507 | 652 | 609 | 649 | 897 | 963 | 791 | 912 | 1143 | 990 | 850 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 13 | 13 | 18 | 0 | 0 | 19 | 19 | 71 | 19 | 13 | 13 | 13 |
Best forecast wave conditions in Illawarra | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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