Surf Forecasts:
Colac Bay surf forecast from 4 Sep 2026:
- Best quality surf: Saturday 5 Sep, 12AM (local time) - 11ft (3.5m), 14s period, W swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 9AM (local time) - 10ft (3.0m), 19s period, W swell with 7,276 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 12AM (local time) - 11ft (3.5m), 14s period with W 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 Saturday (Sep 05) at 12AM. The primary swell is predicted to be 3.5m and 14s period with a secondary swell of 0.2m and 15s. Another secondary swell of 0.1m and 10s 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 19s and forecast to arrive on Thursday (Sep 10) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Wednesday (Sep 09) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sat 5th Sep) | 11ft (3.5m) 14s |
| Best Surf | 12AM (Sat 5th Sep) | 11ft (3.5m) 14s |
| Most Powerful | 9AM (Thu 10th Sep) | 10ft (3.0m) 19s |
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 11°C on Sat morning, min 4°C on Sun night). Winds decreasing (strong winds from the W on Fri afternoon, calm by Sun afternoon). | Days 5-7 Weather SummaryModerate rain (total 13mm), heaviest on Wed night. Very mild (max 13°C on Wed afternoon, min 5°C on Tue night). Winds increasing (calm on Mon night, fresh winds from the WSW by Thu morning). | |||||||||||||||||||
Fri 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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) | W 13 | W 14 | W 15 | W 16 | W 16 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | W 12 | W 11 | W 10 | W 13 | W 19 | WSW 18 | WSW 18 |
Wave Graph  | ||||||||||||||||||||
 kJ | 3718 | 4041 | 4583 | 5032 | 5130 | 3963 | 2846 | 1399 | 651 | 447 | 258 | 196 | 169 | 425 | 576 | 639 | 2753 | 7276 | 5109 | 6054 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | off | cross-off | glassy | glassy | cross | cross-on | cross-on | glassy | glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off |
High Tide | 6:46PM2.15m | 7:29AM2.19m | 8:00PM2.13m | 8:42AM2.20m | 9:10PM2.18m | 9:48AM2.27m | 10:13PM2.27m | 10:47AM2.35m | 11:10PM2.38m | 11:41AM2.44m | 00:00AM2.48m | 12:30PM2.51m | 00:47AM2.56m | |||||||
Low Tide | 1:13AM0.61m | 1:48PM0.72m | 2:23AM0.59m | 3:00PM0.67m | 3:33AM0.50m | 4:10PM0.56m | 4:36AM0.37m | 5:08PM0.43m | 5:32AM0.24m | 5:59PM0.31m | 6:22AM0.15m | 6:45PM0.24m | ||||||||
 |  |  |  |  | | |  |  |  | | | |  |  | |  | | | | |
 | — | — | 7:11 | — | — | 7:09 | — | — | 7:07 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — |
 | 6:22 | — | — | 6:22 | — | — | 6:23 | — | — | 6:24 | — | — | 6:27 | — | — | 6:28 | — | — | 6:29 | — |
mm | 2 | 2 | 3 | 2 | 5 | 4 | 1 | — | — | — | — | — | — | — | — | — | 11 | 2 | 2 | — |
Temp °C | 9 | 9 | 11 | 11 | 9 | 8 | 7 | 7 | 8 | 9 | 8 | 10 | 11 | 8 | 11 | 13 | 10 | 7 | 7 | 6 |
Feels °C | -1 | 1 | 2 | 2 | 2 | 6 | 6 | 4 | 4 | 5 | 5 | 8 | 8 | 5 | 9 | 10 | 5 | -1 | -2 | -1 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 15 | SSW 13 | S 18 | S 19 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 21 | WSW 19 | W 11 | W 10 | S 16 | S 21 | S 19 | S 19 |
| kJ | 20 | 17 | 32 | 229 | 176 | 3963 | 2846 | 1399 | 651 | 447 | 258 | 196 | 86 | 214 | 576 | 639 | 129 | 9 | 882 | 1081 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 10 | S 17 | SE 10 | S 9 | S 18 | S 16 | S 15 | S 10 | S 9 | W 18 | WSW 21 | W 21 | S 20 | WSW 18 | WSW 17 | ESE 8 | S 10 | SE 8 | — |
| kJ | 3 | 4 | 52 | 4 | 28 | 156 | 81 | 40 | 2 | 2 | 6 | 43 | 9 | 7 | 326 | 315 | 13 | 7 | 2 | — |
Swell 3 Height (m) Direction Period (s) | E 7 | E 9 | SE 9 | — | S 5 | S 12 | S 12 | S 12 | — | S 13 | W 22 | W 16 | — | E 4 | S 18 | WSW 13 | SSW 12 | ESE 8 | — | — |
| kJ | 1 | 2 | 3 | — | 4 | 3 | 3 | 11 | — | 3 | 9 | 5 | — | 1 | 6 | 98 | 15 | 6 | — | — |
Wind waves Height (m) Direction Period (s) | W 13 | W 14 | W 15 | W 16 | W 16 | WSW 16 | — | SE 15 | ESE 4 | SE 5 | — | — | WSW 12 | W 12 | — | W 9 | W 13 | W 19 | WSW 18 | WSW 18 |
| kJ | 3718 | 4041 | 4583 | 5032 | 5130 | 49 | — | 9 | 10 | 1 | — | — | 169 | 425 | — | 14 | 2753 | 7276 | 5109 | 6054 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 648 | 260 | 182 | 184 | 124 | 11 | 11 | 12 | 17 | 12 | 0 | 0 | 93 | 0 | 0 | 0 | 147 | 146 | 495 | 180 |
Best forecast wave conditions in Southland | ||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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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