Surf Forecasts:
The Island (Island Bay) surf forecast from 16 Aug 2026:
- Best quality surf: Thursday 20 Aug, 3AM (local time) - 6.5ft (2.0m), 9s period, S swell with offshore winds.
- Most powerful swell: Tuesday 18 Aug, 9PM (local time) - 20ft (6.0m), 11s period, S swell with 8,004 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 3AM (local time) - 6.5ft (2.0m), 9s period with S swell.
Best Forecast Surf Conditions for The Island (Island Bay) this week:
The surf forecast for The Island (Island Bay) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 3AM. The primary swell is predicted to be 2.0m and 9s period with a secondary swell of 0.3m and 12s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at The Island (Island Bay) in the next 16 days are 6.0m 11s and forecast to arrive on Tuesday (Aug 18) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 6s period and expected on Saturday (Aug 22) at 9AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 20th Aug) | 6.5ft (2.0m) 9s |
| Best Surf | 3AM (Thu 20th Aug) | 6.5ft (2.0m) 9s |
| Most Powerful | 9PM (Tue 18th Aug) | 20ft (6.0m) 11s |
Table - best surf conditions forecast for The Island (Island Bay) over the next 16 days.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed morning. Very mild (max 11°C on Tue morning, min 7°C on Sun night). Winds increasing (light winds from the S on Mon afternoon, near gales from the S by Tue afternoon). | Days 5-7 Weather SummaryMostly dry. Very mild (max 13°C on Sat morning, min 9°C on Wed night). Winds increasing (light winds from the WNW on Wed night, strong winds from the NNW by Fri afternoon). | |||||||||||||||||||
Sun 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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) | S 9 | S 8 | S 8 | SSE 8 | SSW 12 | S 8 | S 10 | S 11 | S 11 | S 14 | S 13 | S 9 | S 11 | S 11 | S 12 | S 16 | S 12 | SSW 11 | S 10 | S 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 2943 | 1621 | 716 | 427 | 160 | 1505 | 4583 | 7426 | 4207 | 4053 | 1726 | 480 | 573 | 467 | 418 | 697 | 377 | 161 | 108 | 48 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | off | cross-off | off | off | off | off |
High Tide | 7:55PM1.65m | 8:23AM1.64m | 8:49PM1.63m | 9:14AM1.65m | 9:40PM1.61m | 10:02AM1.64m | 10:28PM1.60m | 10:50AM1.63m | 11:13PM1.57m | 11:37AM1.61m | 11:56PM1.55m | 12:22PM1.59m | 00:39AM1.51m | |||||||
Low Tide | 2:17AM0.58m | 2:40PM0.55m | 3:08AM0.61m | 3:35PM0.59m | 3:57AM0.64m | 4:27PM0.63m | 4:44AM0.66m | 5:16PM0.66m | 5:28AM0.69m | 6:02PM0.68m | 6:09AM0.71m | 6:44PM0.69m | ||||||||
 |  |  |  |  | | | |  | | | | | | | | | | |  | |
 | — | — | 7:09 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — |
 | 5:39 | — | — | 5:40 | — | — | 5:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — |
mm | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 9 | 8 | 8 | 8 | 10 | 11 | 10 | 9 | 9 | 10 | 10 | 10 | 11 | 12 | 12 | 11 | 12 | 13 | 13 | 13 |
Feels °C | -3 | -3 | 0 | 2 | 1 | 2 | -1 | 0 | 2 | 3 | 5 | 6 | 7 | 5 | 4 | 1 | 4 | 5 | 5 | 4 |
Swell 1 Height (m) Direction Period (s) | SSW 20 | SSW 15 | SSW 15 | SSW 14 | SE 8 | ESE 10 | ESE 10 | — | SE 14 | ESE 14 | S 13 | S 9 | S 11 | S 11 | S 12 | S 16 | S 12 | SSW 11 | S 10 | S 10 |
| kJ | 38 | 186 | 222 | 269 | 86 | 61 | 20 | — | 46 | 18 | 1726 | 480 | 573 | 467 | 418 | 697 | 377 | 161 | 108 | 48 |
Swell 2 Height (m) Direction Period (s) | S 20 | SE 15 | SE 15 | SE 15 | SSW 12 | E 10 | — | — | — | — | SE 12 | SE 11 | S 18 | S 16 | ESE 12 | ESE 12 | SE 11 | E 15 | E 13 | E 12 |
| kJ | 31 | 9 | 9 | 8 | 160 | 72 | — | — | — | — | 23 | 19 | 55 | 132 | 15 | 13 | 5 | 4 | 4 | 3 |
Swell 3 Height (m) Direction Period (s) | — | SE 15 | ESE 15 | SE 15 | ESE 10 | ESE 14 | — | — | — | — | — | — | ESE 11 | SE 12 | E 8 | ESE 12 | E 16 | SE 12 | SE 11 | S 13 |
| kJ | — | 9 | 23 | 9 | 58 | 18 | — | — | — | — | — | — | 12 | 22 | 1 | 14 | 5 | 5 | 5 | 3 |
Wind waves Height (m) Direction Period (s) | S 9 | S 8 | S 8 | SSE 8 | SSW 6 | S 8 | S 10 | S 11 | S 11 | S 14 | — | — | NNW 3 | NNW 5 | NW 6 | NNW 6 | NW 6 | NW 6 | NW 6 | NW 6 |
| kJ | 2943 | 1621 | 716 | 427 | 160 | 1505 | 4583 | 7426 | 4207 | 4053 | — | — | 6 | 44 | 182 | 251 | 269 | 313 | 177 | 252 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 205 | 113 | 61 | 131 | 61 | 61 | 194 | 205 | 113 | 113 | 61 | 1 | 1 | 3 | 54 | 61 | 74 | 61 | 61 | 123 |
Best forecast wave conditions in Wellington | ||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Information about the The Island (Island Bay) Surf forecast
The above surf forecast table for The Island (Island Bay) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The Island (Island Bay) can be found by selecting the local surf guide option on the grey menu. Our The Island (Island 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 (The Island (Island 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 The Island (Island 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.
The Island (Island Bay) is 8 km (5 miles) from the city of Wellington. If you plan a holiday in Wellington, look for hotels and other accommodation in Wellington. Wellington has rooms for a wide range of budgets as well as car hire and transport links.
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