Surf Forecasts:
Colac Bay surf forecast from 10 Sep 2026:
- Best quality surf: Thursday 10 Sep, 3PM (local time) - 10ft (3.0m), 18s period, WSW swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 6PM (local time) - 10ft (3.0m), 18s period, WSW swell with 6,163 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 3PM (local time) - 10ft (3.0m), 18s period with WSW swell.
Best Forecast Surf Conditions for Colac Bay this week:
The surf forecast for Colac Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 10) at 3PM. The primary swell is predicted to be 3.0m and 18s period with a secondary swell of 1.2m and 19s. Another secondary swell of 0.5m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Colac Bay in the next 16 days are 3.0m 18s and forecast to arrive on Thursday (Sep 10) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Tuesday (Sep 15) at 9AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Thu 10th Sep) | 10ft (3.0m) 18s |
| Best Surf | 3PM (Thu 10th Sep) | 10ft (3.0m) 18s |
| Most Powerful | 6PM (Thu 10th Sep) | 10ft (3.0m) 18s |
Table - best surf conditions forecast for Colac Bay over the next 16 days.
Short Range ForecastModerate rain (total 19mm), heaviest on Sat night. Very mild (max 10°C on Fri afternoon, min 6°C on Thu night). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Tue afternoon. Very mild (max 14°C on Mon afternoon, min 7°C on Tue night). Winds increasing (light winds from the NNW on Mon morning, fresh winds from the W by Tue afternoon). | ||||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | WSW 19 | WSW 18 | WSW 18 | W 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | W 14 | WSW 14 | W 14 | WSW 13 | W 11 | W 11 | W 14 | W 14 | W 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6390 | 5792 | 5406 | 5875 | 4829 | 5409 | 5428 | 5472 | 5145 | 4046 | 3241 | 2935 | 2061 | 1402 | 1142 | 294 | 1344 | 1200 | 3495 | 4170 | 4259 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 12:30PM2.51m | 00:47AM2.56m | 1:15PM2.55m | 1:32AM2.59m | 1:58PM2.56m | 2:15AM2.58m | 2:38PM2.53m | 2:57AM2.53m | 3:17PM2.46m | 3:40AM2.44m | 3:56PM2.36m | 4:23AM2.33m | 4:38PM2.24m | ||||||||
Low Tide | 6:45PM0.24m | 7:09AM0.12m | 7:29PM0.22m | 7:53AM0.16m | 8:12PM0.26m | 8:36AM0.26m | 8:55PM0.34m | 9:18AM0.40m | 9:37PM0.46m | 10:01AM0.56m | 10:20PM0.59m | 10:44AM0.71m | 11:05PM0.72m | ||||||||
 |  |  |  |  |  | | | | | | |  | | | | | | | |  | |
 | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — |
 | — | 6:29 | — | — | 6:30 | — | — | 6:31 | — | — | 6:32 | — | — | 6:34 | — | — | 6:35 | — | — | 6:37 | — |
mm | 2 | — | — | 3 | — | 3 | 2 | 1 | 8 | — | — | — | — | — | — | — | 2 | 5 | 3 | — | 9 |
Temp °C | 8 | 9 | 9 | 9 | 10 | 8 | 8 | 10 | 10 | 11 | 11 | 10 | 11 | 14 | 11 | 12 | 10 | 8 | 9 | 9 | 10 |
Feels °C | 1 | 2 | 1 | -1 | 1 | -2 | 0 | 1 | 1 | 4 | 4 | 5 | 8 | 11 | 7 | 6 | 4 | 1 | 1 | 0 | 1 |
Swell 1 Height (m) Direction Period (s) | S 19 | S 19 | WSW 18 | S 18 | S 16 | S 17 | S 17 | S 18 | S 17 | S 11 | S 16 | SSE 10 | — | WSW 14 | W 14 | W 10 | S 14 | S 14 | S 16 | S 15 | S 14 |
| kJ | 7 | 1015 | 5406 | 6 | 1338 | 1996 | 23 | 6 | 589 | 2 | 5 | 100 | — | 1402 | 1142 | 225 | 15 | 16 | 240 | 205 | 180 |
Swell 2 Height (m) Direction Period (s) | E 9 | S 5 | S 18 | E 8 | — | — | — | — | S 12 | S 16 | S 16 | S 17 | S 16 | S 16 | S 14 | WSW 13 | — | SSW 13 | E 10 | — | — |
| kJ | 2 | 13 | 6 | 1 | — | — | — | — | 276 | 314 | 236 | 215 | 122 | 5 | 4 | 294 | — | 16 | 2 | — | — |
Swell 3 Height (m) Direction Period (s) | — | E 9 | — | — | — | — | — | — | — | — | — | — | — | — | S 10 | — | S 8 | E 6 | — | — | — |
| kJ | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | 1 | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 19 | WSW 18 | — | W 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | W 14 | NW 3 | — | N 4 | W 11 | W 11 | W 14 | W 14 | W 14 |
| kJ | 6390 | 5792 | — | 5875 | 4829 | 5409 | 5428 | 5472 | 5145 | 4046 | 3241 | 2935 | 2061 | 4 | — | 17 | 1344 | 1200 | 3495 | 4170 | 4259 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 146 | 147 | 141 | 251 | 341 | 260 | 339 | 251 | 265 | 124 | 147 | 124 | 3 | 0 | 3 | 44 | 134 | 188 | 184 | 503 | 182 |
Best forecast wave conditions in Southland | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Colac Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Colac Bay Surf forecast
The above surf forecast table for Colac Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Colac Bay can be found by selecting the local surf guide option on the grey menu. Our Colac Bay 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 (Colac Bay) 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 Colac Bay 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.
Colac Bay is 30 km (19 miles) from Tuatapere. If you plan a holiday in Southland, look for hotels and other accommodation in Tuatapere. Tuatapere has rooms for a wide range of budgets as well as car hire and transport links.
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