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Surf Forecasts:

Colac Bay surf break

Colac Bay surfForecast / Southland / New Zealand

information circle12 Day Weather and Surf, issued 11 am Tuesday 16 Sep 2025 NZST
Forecast 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
11.0° C
 (Which is slightly warmer than usual)

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 Tuesday (Sep 16) at 3PM. The primary swell is predicted to be 2.0m and 13s period with a secondary swell of 1.0m and 16s. 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 3.5m 14s and forecast to arrive on Thursday (Sep 18) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Sunday (Sep 21) at 12AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Tue 16th Sep)6.5ft (2.0m) 13s
Best Surf 6PM (Tue 16th Sep)7ft (2.1m) 16s
Most Powerful12PM (Thu 18th Sep)11ft (3.5m) 14s

Table - best surf conditions forecast for Colac Bay over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Heavy rain (total 25mm), heaviest during Wed morning. Very mild (max 15°C on Tue afternoon, min 4°C on Thu night). Winds decreasing (fresh winds from the WNW on Wed night, light winds from the WNW by Thu night).

Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Sat night. Very mild (max 14°C on Sat afternoon, min 6°C on Fri morning). Winds increasing (calm on Fri afternoon, strong winds from the W by Sat night).

Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
!
4
3
!
!
!
!
!
!
!
4
2
3
3
3
!
!
3
!
!
!
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2.3
W
2
W
2
W
2.4
W
2.5
W
2.5
W
3
W
3
W
2.5
W
2.2
W
1.9
W
1.8
W
1.7
W
1.6
W
1.7
W
2.1
W
2.5
W
2
W
2.1
W
2.3
W
2.5
W
Period(s) (?)131313111212141414131312121116141414131312
Wave
Graph
(?)Metric surfscale
Energy (?)23601933142713881676169336034026266417521242849111913061487187227671454151617851840
Wind
(km/h)
15
NNW
15
N
20
NNW
35
W
30
WNW
30
NW
35
WSW
35
SW
15
SW
10
NNW
5
SW
20
N
20
NNE
20
NNE
20
N
30
NW
20
NW
20
NNW
10
N
15
N
15
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off		cross-
off		cross-
off		offoffcross-
off		crosscrossoffglasscross-
off		cross-
off		cross-
off		cross-
off		offoffcross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
9:08PM
2.18
9:44AM
2.23
10:09PM
2.23
10:41AM
2.27
11:02PM
2.29
11:30AM
2.31
11:48PM
2.35
12:15PM
2.36
12:30AM
2.40
12:55PM
2.39
1:09AM
2.43
1:32PM
2.41
1:46AM
2.44
Low Tide
/ height (m)
2:55PM
0.71
3:27AM
0.55
4:03PM
0.64
4:28AM
0.47
4:59PM
0.54
5:21AM
0.39
5:47PM
0.46
6:07AM
0.34
6:29PM
0.40
6:49AM
0.33
7:08PM
0.39
7:29AM
0.36
7:46PM
0.41
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Sunrise6:50--6:48--6:46--6:43--6:41--6:39--6:37--
Sunset-6:37--6:37--6:38--6:39--6:42--6:43--6:44-
cloud
part cloud
rain showers
heavy rain
rain showers
rain showers
light rain
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
rain showers
clear
clear
rain showers
part cloud
part cloud
rain showers
Rain (mm)
--2161141------2--1--4
Temp. °C13151412131197781071314111212913149
Feels °C (?)912106652-204727956749104
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for Southland

  1. weather stationWind Update The wind is still cross-off at Colac Bay (light winds from the NNW at InvercargillAeroAws 33 km from Colac Bay). 1.5m 13s groundswell from the W with a 0.7m 17s long period groundswell from the WSW. 2 swells combining so expect closeout sets.

    1 hour 24 minutes ago Colac Bay
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33 km away, 1 h 24 min ago

11 km/h
NNW
0.0
11.0
Air / Water (°C)
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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.

View detailed surf forecast for Colac Bay at:
surf-forecast.com

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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