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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 3 pm 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 7PM is: 2.3m 8s primary swell from a East-northeast direction and 2.0m 9s secondary swell from a East-northeast direction (forecast issued at 03:00pm May 18). An open ocean swell of 0.1m 15s is not directed at the surf break. The wind direction is predicted to be glassy and the swell rating is 4.
| Time (AEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | - | - |
| Afternoon (18 May) | 7ft (2.1m) | 9s |
| Evening (18 May) | 8ft (2.5m) | 8s |
Table - waves today at Thommos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 9mm), mostly falling on Mon night. Very mild (max 19°C on Mon afternoon, min 12°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | 7 AM | 10 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ENE 9 | ENE 9 | ENE 8 | ENE 8 | 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 | ENE 10 | ENE 10 | E 10 | |
778 | 721 | 771 | 919 | 732 | 778 | 938 | 970 | 1280 | 1331 | 1162 | 1039 | 870 | 791 | 676 | 573 | 510 | 432 | 424 | 370 | 306 | 300 | 300 | 290 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross-on | glassy | glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross-off | cross-off | cross | cross | cross | |
High Tide | 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 | 6:11AM0.06m | ||||||||||||||||||
 | |  | | | | | |  | |  |  | |  |  | | |  | | | | | | | |
 | — | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:45 | — | — |
 | — | 5:00 | — | — | — | — | — | — | — | 5:00 | — | — | — | — | — | — | — | 4:59 | — | — | — | — | — | 4:59 |
— | — | 1 | 2 | 2 | 2 | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 20 | 19 | 17 | 16 | 16 | 16 | 16 | 17 | 17 | 16 | 16 | 15 | 14 | 13 | 12 | 16 | 15 | 16 | 14 | 13 | 13 | 14 | 13 | 16 |
20 | 19 | 18 | 17 | 16 | 16 | 16 | 17 | 17 | 14 | 15 | 15 | 13 | 11 | 9 | 14 | 12 | 12 | 11 | 10 | 9 | 8 | 8 | 11 | |
Swell 1 Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | S 9 | S 9 | ENE 10 | S 9 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | E 10 |
 kJ | 778 | 721 | 623 | 681 | 732 | 778 | 938 | 970 | 1280 | 1331 | 1162 | 1039 | 758 | 723 | 676 | 1005 | 510 | 432 | 424 | 370 | 306 | 300 | 300 | 290 |
Swell 2 Height (m) Direction Period (s) | — | — | S 15 | — | — | NE 8 | — | SSW 4 | — | — | — | S 8 | ENE 10 | ENE 10 | — | ENE 10 | — | — | — | — | — | — | — | — |
| kJ | — | — | 4 | — | — | 398 | — | 15 | — | — | — | 583 | 870 | 791 | — | 573 | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | ENE 8 | ENE 8 | SSW 4 | SSW 3 | SSW 4 | SW 5 | SSW 5 | S 6 | S 7 | S 8 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 |
| kJ | — | — | 771 | 919 | 2 | 5 | 17 | 31 | 27 | 77 | 278 | 829 | 1164 | 999 | 723 | 1331 | 1039 | 861 | 734 | 865 | 971 | 1138 | 1088 | 861 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 19 | 0 | 0 | 13 | 46 | 13 | 19 |
Best forecast wave conditions in Illawarra | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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