Surf Forecasts:
Castlepoint - The Gap surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 9AM (local time) - 15ft (4.5m), 12s period, S swell with cross-shore winds.
- Most powerful swell: Wednesday 19 Aug, 12PM (local time) - 13ft (4.0m), 15s period, SSW swell with 6,542 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 9AM (local time) - 15ft (4.5m), 12s period with S swell.
Best Forecast Surf Conditions for Castlepoint - The Gap this week:
The surf forecast for Castlepoint - The Gap over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 9AM. The primary swell is predicted to be 4.5m and 12s period with a secondary swell of 3.5m and 11s. Another secondary swell of 1.6m and 15s is also forecast. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Castlepoint - The Gap in the next 16 days are 4.0m 15s and forecast to arrive on Wednesday (Aug 19) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Tuesday (Aug 25) at 3PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Wed 19th Aug) | 15ft (4.5m) 12s |
| Best Surf | 9AM (Wed 19th Aug) | 15ft (4.5m) 12s |
| Most Powerful | 12PM (Wed 19th Aug) | 13ft (4.0m) 15s |
Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.
Short Range ForecastLight rain (total 4mm), mostly falling on Tue night. Very mild (max 13°C on Fri morning, min 8°C on Tue night). Winds decreasing (strong winds from the S on Tue night, calm by Thu night). | Days 5-7 Weather SummaryMostly dry. Very mild (max 15°C on Sun morning, min 10°C on Fri night). Winds decreasing (strong winds from the WNW on Sat night, light winds from the WNW by Mon afternoon). | ||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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 11 | S 12 | S 15 | SSW 14 | SSW 13 | S 8 | S 13 | S 16 | S 14 | S 12 | S 11 | S 11 | S 10 | S 10 | ESE 13 | ESE 12 | SSW 12 | SSW 16 | SSW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 5809 | 5552 | 3344 | 3069 | 1844 | 617 | 839 | 1226 | 818 | 409 | 244 | 188 | 98 | 33 | 34 | 30 | 308 | 763 | 512 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-off | cross-off | cross | glassy | cross-off | cross-off | cross-off | off | off | cross-off | off | off | off | off | off | off |
High Tide | 9:55PM1.31m | 10:17AM1.34m | 10:43PM1.29m | 11:05AM1.33m | 11:28PM1.26m | 11:52AM1.31m | 00:11AM1.22m | 12:37PM1.28m | 00:54AM1.18m | 1:20PM1.26m | 1:39AM1.14m | 2:01PM1.24m | 2:24AM1.10m | ||||||
Low Tide | 4:12AM0.13m | 4:42PM0.13m | 4:59AM0.17m | 5:31PM0.16m | 5:43AM0.20m | 6:17PM0.18m | 6:24AM0.22m | 6:59PM0.20m | 7:03AM0.24m | 7:40PM0.21m | 7:42AM0.24m | 8:20PM0.21m | |||||||
 |  | |  |  | |  | | |  |  | | | | | | | | | |
 | — | 7:00 | — | — | 6:58 | — | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — |
 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — | — | 5:42 | — |
mm | 3 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 8 | 9 | 9 | 9 | 11 | 10 | 10 | 13 | 13 | 11 | 14 | 14 | 14 | 15 | 14 | 11 | 15 | 15 | 12 |
Feels °C | -3 | 2 | 3 | 5 | 6 | 6 | 7 | 12 | 11 | 5 | 7 | 5 | 8 | 6 | 7 | 7 | 10 | 11 | 8 |
Swell 1 Height (m) Direction Period (s) | — | S 11 | S 15 | S 14 | S 8 | S 8 | S 13 | S 16 | S 14 | S 12 | S 11 | S 11 | S 10 | S 10 | S 9 | ESE 12 | SSW 12 | SSW 16 | SSW 14 |
| kJ | — | 3210 | 3344 | 1731 | 289 | 339 | 839 | 1226 | 818 | 409 | 244 | 188 | 98 | 30 | 15 | 30 | 308 | 763 | 512 |
Swell 2 Height (m) Direction Period (s) | — | S 15 | SE 9 | SE 9 | SSW 13 | SSW 12 | S 16 | ESE 11 | ESE 10 | SE 10 | ESE 9 | E 14 | ESE 13 | ESE 13 | ESE 13 | S 9 | ESE 13 | ESE 13 | ESE 13 |
| kJ | — | 1149 | 502 | 302 | 350 | 147 | 325 | 93 | 60 | 23 | 8 | 16 | 34 | 33 | 34 | 14 | 33 | 33 | 33 |
Swell 3 Height (m) Direction Period (s) | — | SE 14 | — | — | ESE 8 | ESE 9 | ESE 9 | — | — | SE 12 | NE 4 | ESE 10 | NE 5 | NE 6 | NE 6 | NE 6 | N 12 | — | — |
| kJ | — | 29 | — | — | 72 | 84 | 61 | — | — | 6 | 1 | 9 | 1 | 1 | 1 | 1 | 3 | — | — |
Wind waves Height (m) Direction Period (s) | S 11 | S 12 | — | SSW 14 | SSW 13 | S 8 | — | — | — | NNW 3 | NNW 2 | NW 3 | NW 3 | W 3 | W 4 | W 2 | W 3 | — | NW 4 |
| kJ | 5809 | 5552 | — | 3069 | 1844 | 617 | — | — | — | 3 | 1 | 6 | 6 | 5 | 12 | 1 | 6 | — | 15 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 275 | 102 | 235 | 1 | 0 | 104 | 0 | 0 | 0 | 28 | 16 | 74 | 135 | 135 | 25 | 28 | 0 | 0 | 0 |
Best forecast wave conditions in The Wairarapa | |||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Castlepoint - The Gap Surf forecast
The above surf forecast table for Castlepoint - The Gap provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Castlepoint - The Gap can be found by selecting the local surf guide option on the grey menu. Our Castlepoint - The Gap 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 (Castlepoint - The Gap) 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 Castlepoint - The Gap 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.
Are you planning a holiday in The Wairarapa? If you are looking for accommodation near Castlepoint - The Gap, camping, hotels and holiday cottages in The Wairarapa, consider staying in Masterton which is 48 km (30 miles) away. Other places in and around The Wairarapa where you can find information about places to rent, and car hire include Palmerston North which is 80 km (50 miles) away and Levin, 86 km (53 miles) away.
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