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Colac Bay Surf Forecast
/ Southland (9 surf breaks) /
Surf Forecasts:
Colac Bay surfForecast / Southland / New Zealand
12 Day Weather and Surf, issued 6 am Thursday 18 Dec 2025 NZDTForecast update in hr min s Forecast update imminent
Colac Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Colac Bay sea temperature is
14.7° C
(Which is 2.8°C warmer than normal for this time of year)Best Forecast Surf Conditions for Colac Bay this week:
The surf forecast for Colac Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Dec 18) at 1PM. The primary swell is predicted to be 1.4m and 11s period with a secondary swell of 0.2m and 11s. Another secondary swell of 0.3m and 11s 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 12 days are 3.0m 13s and forecast to arrive on Tuesday (Dec 23) 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 1.8m 10s period and expected on Tuesday (Dec 23) at 4PM.
| Wave Type | Time (NZDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Thu 18th Dec) | 4.5ft (1.4m) 11s |
| Best Surf | 4PM (Thu 18th Dec) | 7.5ft (2.3m) 11s |
| Most Powerful | 10PM (Tue 23rd Dec) | 10ft (3.0m) 13s |
Table - best surf conditions forecast for Colac Bay over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Heavy rain (total 38mm), heaviest during Thu night. Very mild (max 18°C on Thu morning, min 7°C on Fri night). Winds decreasing (fresh winds from the SW on Sat morning, light winds from the SW by Sat night). | Days 3-6 Weather Summary Light rain (total 6mm), mostly falling on Mon night. Very mild (max 16°C on Tue afternoon, min 8°C on Sun night). Winds increasing (calm on Mon night, strong winds from the WNW by Tue afternoon). | ||||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 12 | 11 | 12 | 12 | 11 | 13 | 12 | 12 | 12 | 11 | 10 | 10 | 9 | 9 | 11 | 12 | 10 | 13 | 12 | 11 | 18 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 528 | 1288 | 1117 | 636 | 716 | 1157 | 918 | 811 | 480 | 265 | 152 | 74 | 50 | 27 | 12 | 14 | 10 | 2833 | 1227 | 599 | 443 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross | cross | cross- off | cross- off | cross- off | cross | cross- off | cross | cross- on | cross | cross- on | on | glass | cross- off | cross- off | off | cross- off | cross- off | glass |
High Tide / height (m) | 1:12PM 2.21 | 1:36AM 2.25 | 1:52PM 2.21 | 2:17AM 2.25 | 2:29PM 2.19 | 2:56AM 2.24 | 3:06PM 2.18 | 3:35AM 2.22 | 3:44PM 2.16 | 4:14AM 2.21 | 4:24PM 2.15 | 4:53AM 2.19 | 5:06PM 2.14 | ||||||||
Low Tide / height (m) | 7:30PM 0.70 | 7:53AM 0.77 | 8:10PM 0.66 | 8:31AM 0.74 | 8:48PM 0.62 | 9:09AM 0.70 | 9:27PM 0.58 | 9:46AM 0.66 | 10:06PM 0.56 | 10:26AM 0.64 | 10:48PM 0.54 | 11:08AM 0.62 | 11:33PM 0.54 | ||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||
| Sunrise | 5:50 | - | - | 5:50 | - | - | 5:50 | - | - | 5:50 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - |
| Sunset | - | 9:37 | - | - | 9:38 | - | - | 9:38 | - | - | 9:39 | - | - | 9:39 | - | - | 9:40 | - | - | 9:40 | - |
 | |  |  |  |  | |  |  | | | | | |  |  | |  | | |  | |
Rain (mm) | - | - | 22 | 10 | - | 4 | 2 | - | - | - | - | - | - | - | 4 | 2 | - | - | - | 15 | 7 |
| Temp. °C | 18 | 18 | 14 | 11 | 11 | 9 | 10 | 11 | 10 | 12 | 12 | 9 | 14 | 14 | 13 | 14 | 16 | 13 | 16 | 12 | 11 |
| Feels °C (?) | 15 | 12 | 9 | 6 | 5 | 3 | 3 | 4 | 5 | 8 | 8 | 6 | 9 | 9 | 11 | 11 | 8 | 6 | 13 | 10 | 9 |
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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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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.
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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 12 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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