Thommos surfForecast / NSW – Illawarra / Australia

information circle16 Day Weather and Surf, issued 9 pm Thursday 16 Apr 2026 AEST
Forecast 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
21.5° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Thommos this week:

The surf forecast for Thommos over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Apr 22) at 10PM. The primary swell is predicted to be 2.5m and 12s period with a secondary swell of 0.1m and 11s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Thommos in the next 16 days are 2.5m 12s and forecast to arrive on Wednesday (Apr 22) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 12s period and expected on Saturday (Apr 18) at 10PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Wed 22nd Apr)8ft (2.5m) 12s
Best Surf10PM (Wed 22nd Apr)8ft (2.5m) 12s
Most Powerful10PM (Wed 22nd Apr)8ft (2.5m) 12s

Table - best surf conditions forecast for Thommos over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 4mm), mostly falling on Fri afternoon. Warm (max 27°C on Fri morning, min 12°C on Fri night). Winds decreasing (fresh winds from the SSE on Fri afternoon, light winds from the S by Sat morning).

Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Mon night. Very mild (max 19°C on Mon morning, min 13°C on Sun night). Wind will be generally light.

Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thu
23
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
4
1
0
Swell
Height Map
Wave Height (m) & direction (?)
0.3
NE
0.3
NE
0.3
NE
0.3
NE
0.1
NE
2.5
S
3.5
S
3
S
2.5
S
3
SSE
3
SSE
2.5
SSE
0.1
NE
0.1
NE
0.4
SE
0.8
SE
0.1
N
0.1
NE
2.5
SE
0.8
ESE
0.5
ESE
Period(s) (?)4557812121112121212131313121212121010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)244720000000776020736176112358
Wind
(km/h)
15
W
15
W
15
SW
15
SW
5
S
20
SSE
15
SW
10
SSW
20
S
10
SW
20
S
25
S
20
SSW
20
SSW
30
SSW
20
SW
25
SSW
25
S
10
WSW
5
SSE
15
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffcross-
off
cross-
off
crosscross-
on
cross-
off
crosscross-
on
cross-
off
crosscrosscrosscrosscrosscross-
off
crosscross-
on
cross-
off
glasscross-
on
High Tide
/ height (m)
7:47AM
1.39
8:09PM
1.62
8:36AM
1.34
8:51PM
1.67
9:27AM
1.26
9:36PM
1.69
10:21AM
1.17
10:26PM
1.66
11:20AM
1.08
11:21PM
1.60
12:28PM
1.01
12:23AM
1.52
1:44PM
0.98
Low Tide
/ height (m)
1:45AM
0.12
1:49PM
0.10
2:34AM
0.05
2:29PM
0.14
3:25AM
0.02
3:11PM
0.20
4:19AM
0.02
3:56PM
0.28
5:17AM
0.07
4:46PM
0.36
6:21AM
0.13
5:45PM
0.45
7:31AM
0.18
6:56PM
0.51
Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thu
23
Sunrise-6:18--6:20--6:20--6:22--6:22--6:22--6:24-
Sunset--5:30--5:30--5:29--5:27--5:25--5:24--5:23
part cloud
part cloud
rain showers
rain showers
clear
clear
clear
clear
clear
part cloud
clear
clear
rain showers
part cloud
rain showers
rain showers
clear
clear
part cloud
part cloud
clear
Rain (mm)
--22--------1-21-----
Temp. °C202726151717131817141918161617151919151918
Feels °C (?)172423111313101413111514121112101414131615
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Thommos Surf forecast

The above surf forecast table for Thommos provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Thommos can be found by selecting the local surf guide option on the grey menu. Our Thommos surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Thommos) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Thommos may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Thommos is 20 km (12 miles) from Wollongong. If you plan a holiday in Illawarra, look for hotels and other accommodation in Wollongong. Wollongong has rooms for a wide range of budgets as well as car hire and transport links.

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