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Porpoise Bay Surf Forecast
/ Catlins (9 surf breaks) /
Surf Forecasts:
Porpoise Bay surfForecast / Catlins / New Zealand
48hr Weather and Surf, issued 5 pm Wednesday 17 Sep 2025 NZST
How big are the waves at Porpoise Bay today?
The current surf forecast for Porpoise Bay at 12AM is: 0.6m 12s primary swell from a Southwest direction and 0.6m 6s secondary swell from a West-southwest direction (forecast issued at 05:00pm September 17). An open ocean swell of 1.1m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (NZST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | - | - |
| Afternoon (18 Sep) | 2.5ft (0.8m) | 13s |
| Evening (18 Sep) | 2ft (0.6m) | 13s |
Table - waves today at Porpoise Bay. (Swell directed towards the surf break)
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 6 | 13 | 12 | 12 | 6 | 7 | 15 | 8 | 8 | 9 | 9 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 18 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 205 | 178 | 134 | 118 | 178 | 372 | 761 | 4353 | 1352 | 1489 | 1530 | 1441 | 1337 | 1219 | 1300 | 1386 | 1450 | 1242 | 1075 | 882 | 441 | 319 | 342 | 377 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- off | cross- off | cross- off | glass | on | glass | cross- off | cross- off | off | off | off |
High Tide / height (m) | 11:11PM 2.05 | 11:44AM 2.13 | 12:03AM 2.11 | 12:32PM 2.17 | 12:48AM 2.16 | |||||||||||||||||||
Low Tide / height (m) | 4:57PM 0.41 | 5:20AM 0.28 | 5:49PM 0.34 | 6:10AM 0.22 | 6:34PM 0.29 | 6:54AM 0.18 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 6:41 | - | - | - | - | - | - | - | 6:39 | - | - | - | - | - | - | - | 6:37 | - |
| Sunset | - | 6:32 | - | - | - | - | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:36 | - | - | - | - | - | - |
 |  |  |  | |  | |  | |  |  | | |  |  | | | | | | | | | | |
Rain (mm) | - | 1 | - | - | - | 1 | 1 | 2 | 1 | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 12 | 10 | 10 | 9 | 9 | 9 | 7 | 7 | 6 | 5 | 5 | 5 | 3 | 4 | 8 | 10 | 8 | 6 | 5 | 4 | 5 | 7 | 12 |
| Feels °C (?) | 6 | 5 | 5 | 3 | 2 | 1 | 0 | -3 | -3 | -4 | -4 | -2 | 0 | -2 | -2 | 4 | 7 | 5 | 4 | 1 | -1 | -1 | 1 | 7 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Catlins
The wind is still cross-off at Porpoise Bay (strong winds from the NW at ASCATB169E47S 41 km from Porpoise Bay). 0.7m 9s swell from the S with a 0.4m 13s groundswell from the SW. 2 swells combining to make bigger set waves.
41 km away, 1 h 51 min ago
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