Surf Forecasts:
Colac Bay surf forecast from 7 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 9PM (local time) - 8ft (2.5m), 16s period, W swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 3PM (local time) - 10ft (3.0m), 18s period, WSW swell with 5,988 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 3AM (local time) - 3ft (0.9m), 12s 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 Tuesday (Sep 08) at 3AM. The primary swell is predicted to be 0.9m and 12s period with a secondary swell of 0.1m and 17s. 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 3PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Wednesday (Sep 09) at 9PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Tue 8th Sep) | 3ft (0.9m) 12s |
| Best Surf | 9PM (Wed 9th Sep) | 8ft (2.5m) 16s |
| Most Powerful | 3PM (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 15mm), heaviest on Wed night. Very mild (max 12°C on Wed morning, min 5°C on Mon night). Winds increasing (calm on Mon night, fresh winds from the WSW by Wed night). | Days 5-7 Weather SummaryHeavy rain (total 26mm), heaviest during Sat night. Very mild (max 11°C on Sun afternoon, min 5°C on Thu night). Winds increasing (light winds from the W on Thu night, strong winds from the W by Fri night). | ||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | ||||||||||||||
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 12 | W 12 | W 11 | W 11 | W 11 | W 10 | WSW 14 | WSW 19 | WSW 18 | WSW 18 | W 17 | WSW 16 | WSW 15 | WSW 16 | WSW 17 | WSW 16 | W 15 | W 14 | W 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 258 | 177 | 388 | 545 | 459 | 556 | 2613 | 5877 | 5988 | 5497 | 5727 | 4954 | 4746 | 5230 | 5589 | 5070 | 4739 | 4250 | 3388 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 10:13PM2.27m | 10:47AM2.35m | 11:10PM2.38m | 11:41AM2.44m | 00:00AM2.48m | 12:30PM2.51m | 00:47AM2.56m | 1:15PM2.55m | 1:32AM2.59m | 1:58PM2.56m | 2:15AM2.58m | 2:38PM2.53m | 2:57AM2.53m | ||||||
Low Tide | 4:36AM0.37m | 5:08PM0.43m | 5:32AM0.24m | 5:59PM0.31m | 6:22AM0.15m | 6:45PM0.24m | 7:09AM0.12m | 7:29PM0.22m | 7:53AM0.16m | 8:12PM0.26m | 8:36AM0.26m | 8:55PM0.34m | |||||||
 |  | | |  | |  |  | | |  | |  | | |  | | | | |
 | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:56 | — | — |
 | — | — | 6:27 | — | — | 6:28 | — | — | 6:29 | — | — | 6:30 | — | — | 6:31 | — | — | 6:32 | — |
mm | — | — | — | — | — | — | 12 | 2 | 1 | — | 2 | 1 | 4 | 2 | 3 | 12 | 1 | 1 | 1 |
Temp °C | 7 | 9 | 10 | 8 | 12 | 12 | 7 | 8 | 8 | 7 | 10 | 10 | 8 | 9 | 9 | 10 | 10 | 11 | 10 |
Feels °C | 4 | 6 | 7 | 4 | 8 | 7 | 0 | 0 | 0 | 2 | 2 | 1 | -2 | 0 | 1 | 3 | 3 | 4 | 3 |
Swell 1 Height (m) Direction Period (s) | WSW 12 | W 12 | W 11 | W 11 | W 11 | W 10 | — | S 19 | S 19 | S 18 | — | S 16 | S 16 | S 17 | S 18 | S 17 | S 15 | S 15 | S 14 |
| kJ | 258 | 177 | 388 | 545 | 459 | 556 | — | 7 | 876 | 7 | — | 401 | 1452 | 23 | 26 | 22 | 5 | 4 | 4 |
Swell 2 Height (m) Direction Period (s) | W 18 | WSW 21 | WSW 21 | WSW 20 | WSW 18 | WSW 17 | SSE 22 | E 9 | E 9 | E 8 | E 8 | E 8 | — | — | — | — | — | S 15 | S 14 |
| kJ | 6 | 43 | 86 | 216 | 326 | 336 | 157 | 6 | 6 | 6 | 1 | 1 | — | — | — | — | — | 215 | 101 |
Swell 3 Height (m) Direction Period (s) | W 22 | W 16 | E 5 | SW 11 | S 18 | WSW 13 | — | — | — | — | — | — | — | — | — | — | — | — | SSE 18 |
| kJ | 9 | 5 | 1 | 5 | 6 | 181 | — | — | — | — | — | — | — | — | — | — | — | — | 103 |
Wind waves Height (m) Direction Period (s) | — | — | WSW 11 | WSW 11 | NNW 2 | — | WSW 14 | WSW 19 | WSW 18 | WSW 18 | W 17 | WSW 16 | WSW 15 | WSW 16 | WSW 17 | WSW 16 | W 15 | W 14 | W 14 |
| kJ | — | — | 37 | 23 | 1 | — | 2613 | 5877 | 5988 | 5497 | 5727 | 4954 | 4746 | 5230 | 5589 | 5070 | 4739 | 4250 | 3388 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 3 | 3 | 44 | 124 | 221 | 44 | 180 | 260 | 251 | 251 | 251 | 180 | 180 | 180 | 251 |
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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