Surf Forecasts:
How big are the waves at Porpoise Bay today (21 Aug):
- Afternoon surf: Afternoon surf (21 Aug, local time) - 2.5ft (0.8m), 14s period with SW swell.
- Evening surf: Evening surf (21 Aug, local time) - 2.5ft (0.8m), 13s period with SW swell.
The current surf forecast for Porpoise Bay at 9PM is: 0.8m 13s primary swell from a Southwest direction and 0.7m 10s secondary swell from a South direction (forecast issued at 05:00pm August 21). An open ocean swell of 0.9m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (NZST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | - | - |
| Afternoon (21 Aug) | 2.5ft (0.8m) | 14s |
| Evening (21 Aug) | 2.5ft (0.8m) | 13s |
Table - waves today at Porpoise Bay. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 14mm), heaviest on Sun morning. Very mild (max 14°C on Sat afternoon, min 6°C on Sun morning). Winds increasing (light winds from the NNW on Sat afternoon, near gales from the W by Sun afternoon). | |||||||||||||||||||
Fri 21 | Saturday 22 | Sunday 23 | |||||||||||||||||
3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SSW 18 | SSW 18 | SW 16 | SSW 16 | SSW 17 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | WSW 8 | SW 9 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 281 | 221 | 205 | 202 | 136 | 124 | 184 | 125 | 237 | 377 | 352 | 348 | 475 | 601 | 700 | 2425 | 3470 | 9013 | 9144 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross | cross | cross | cross |
High Tide | 9:27PM1.73m | 10:07AM1.79m | 10:29PM1.75m | 11:03AM1.84m | |||||||||||||||
Low Tide | 3:40AM0.65m | 4:13PM0.70m | 4:34AM0.62m | 5:05PM0.65m | |||||||||||||||
 |  | | |  | |  | | | | | |  | |  | |  | |  | |
 | — | — | — | — | — | 7:33 | — | — | — | — | — | — | — | 7:31 | — | — | — | — | — |
 | 5:59 | — | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 6:01 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | 4 | 2 | 2 | 1 |
Temp °C | 11 | 10 | 11 | 11 | 10 | 10 | 10 | 13 | 14 | 14 | 12 | 10 | 9 | 8 | 8 | 6 | 6 | 6 | 7 |
Feels °C | 5 | 3 | 4 | 3 | 2 | 3 | 5 | 9 | 11 | 9 | 7 | 6 | 4 | 1 | 0 | -6 | -6 | -6 | -4 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SSW 18 | SW 16 | SSW 16 | SSW 17 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | ESE 14 | ENE 10 | E 13 | ESE 13 |
| kJ | 281 | 221 | 205 | 202 | 136 | 82 | 184 | 125 | 237 | 377 | 352 | 348 | 475 | 601 | 700 | 36 | 19 | 56 | 35 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 | SW 15 | SW 15 | ENE 7 | ENE 8 | ENE 7 | ENE 9 | ESE 13 | ESE 13 | ENE 10 |
| kJ | 122 | 96 | 96 | 71 | 48 | 47 | 45 | 27 | 26 | 26 | 104 | 134 | 26 | 22 | 11 | 16 | 35 | 35 | 10 |
Swell 3 Height (m) Direction Period (s) | E 10 | E 11 | E 11 | E 10 | SSW 16 | SSW 18 | WSW 13 | SSW 19 | SW 12 | SW 7 | SW 7 | E 6 | SW 14 | ESE 14 | ESE 14 | — | — | — | — |
| kJ | 2 | 9 | 9 | 9 | 53 | 124 | 63 | 73 | 23 | 13 | 13 | 20 | 67 | 38 | 36 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 4 | NW 4 | NW 4 | NNW 4 | NNW 4 | NNW 4 | NNW 4 | NNW 4 | — | NE 5 | NNW 3 | NNW 3 | NNW 4 | NW 5 | WNW 6 | WSW 8 | SW 9 | SW 14 | SW 14 |
| kJ | 17 | 28 | 24 | 23 | 30 | 28 | 13 | 9 | — | 6 | 5 | 6 | 14 | 62 | 340 | 2425 | 3470 | 9013 | 9144 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 34 | 42 | 34 | 34 | 34 | 34 | 34 | 34 | 0 | 42 | 42 | 0 | 34 | 45 | 115 | 611 | 1001 | 611 | 451 |
Best forecast wave conditions in Catlins | |||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||
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