Surf Forecasts:
Castlepoint - The Gap surf forecast from 18 Sep 2026:
- Best quality surf: Sunday 20 Sep, 9PM (local time) - 16ft (5.0m), 12s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 21 Sep, 12AM (local time) - 18ft (5.5m), 14s period, SSW swell with 11,176 kJ wave energy.
- Next surfable swell (1★+): Saturday 19 Sep, 3AM (local time) - 2.5ft (0.8m), 15s period with SSW 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 Saturday (Sep 19) at 3AM. The primary swell is predicted to be 0.8m and 15s period with a secondary swell of 0.9m and 12s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Castlepoint - The Gap in the next 16 days are 5.5m 14s and forecast to arrive on Monday (Sep 21) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Sep 20) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sat 19th Sep) | 2.5ft (0.8m) 15s |
| Best Surf | 9PM (Sun 20th Sep) | 16ft (5.0m) 12s |
| Most Powerful | 12AM (Mon 21st Sep) | 18ft (5.5m) 14s |
Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.
Short Range ForecastLight rain (total 6mm), mostly falling on Sun morning. Very mild (max 17°C on Sat afternoon, min 6°C on Sun night). Winds increasing (calm on Fri morning, strong winds from the WNW by Sat night). | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Tue morning. Very mild (max 14°C on Mon morning, min 5°C on Tue night). Winds decreasing (strong winds from the WNW on Mon night, light winds from the W by Tue night). | ||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | |||||||||||||||
AM | 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) | SE 12 | SE 12 | SE 12 | SSW 16 | SSW 15 | SSW 13 | SSW 8 | SSW 10 | SSW 14 | S 13 | S 12 | S 13 | S 9 | S 6 | S 8 | SSW 17 | SSW 16 | S 8 | SSW 9 | SSW 10 | S 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 287 | 259 | 234 | 893 | 573 | 246 | 456 | 1720 | 11176 | 2753 | 1332 | 839 | 159 | 139 | 373 | 307 | 263 | 682 | 1037 | 940 | 373 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross | cross-off | off | off | cross-off | cross | cross-off | off | off | off | off | cross | off | cross | cross | cross | cross-off | cross | off |
High Tide | 10:31AM1.30m | 10:54PM1.23m | 11:15AM1.27m | 11:35PM1.19m | 11:58AM1.24m | 00:15AM1.15m | 12:40PM1.22m | 00:57AM1.12m | 1:21PM1.21m | 1:41AM1.10m | 2:02PM1.20m | 2:27AM1.09m | 2:47PM1.19m | ||||||||
Low Tide | 5:00PM0.19m | 5:06AM0.23m | 5:43PM0.18m | 5:46AM0.23m | 6:22PM0.17m | 6:24AM0.22m | 7:01PM0.16m | 7:01AM0.21m | 7:38PM0.17m | 7:41AM0.20m | 8:17PM0.18m | 8:24AM0.20m | 9:00PM0.20m | ||||||||
 |  |  | | |  |  | | | | |  | |  | | | | | | | | |
 | 6:11 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — | 6:03 | — | — | 6:01 | — | — |
 | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:09 | — | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — |
mm | — | — | — | — | — | 2 | 4 | — | — | — | — | — | 5 | 5 | — | — | 1 | — | 2 | — | — |
Temp °C | 14 | 14 | 12 | 16 | 17 | 14 | 12 | 12 | 9 | 14 | 14 | 14 | 14 | 9 | 7 | 10 | 9 | 8 | 9 | 10 | 8 |
Feels °C | 11 | 10 | 10 | 11 | 12 | 4 | 5 | 3 | 3 | 8 | 8 | 8 | 10 | 3 | 4 | 3 | 2 | 0 | 2 | 5 | 4 |
Swell 1 Height (m) Direction Period (s) | SE 12 | SE 12 | SE 12 | SSW 16 | SSW 15 | SSW 13 | SSW 12 | SE 11 | S 14 | S 13 | S 12 | S 13 | S 9 | SSW 10 | S 8 | S 8 | SSW 16 | SSW 15 | S 9 | S 10 | S 9 |
| kJ | 287 | 259 | 224 | 893 | 573 | 246 | 155 | 30 | 6819 | 2753 | 1332 | 839 | 159 | 77 | 373 | 138 | 263 | 169 | 656 | 575 | 373 |
Swell 2 Height (m) Direction Period (s) | S 6 | S 6 | SSW 15 | SE 12 | SE 11 | ESE 11 | ESE 11 | ENE 8 | ENE 10 | ESE 10 | SE 14 | SE 13 | SE 13 | SSW 18 | SSW 16 | SSW 17 | ESE 11 | SE 11 | ESE 10 | ESE 10 | S 17 |
| kJ | 27 | 11 | 234 | 195 | 123 | 82 | 47 | 6 | 20 | 9 | 8 | 27 | 26 | 60 | 211 | 307 | 12 | 29 | 22 | 10 | 153 |
Swell 3 Height (m) Direction Period (s) | SSW 16 | SSW 16 | NE 6 | ENE 6 | NE 7 | NE 7 | NE 8 | — | ESE 11 | ENE 10 | — | NE 10 | E 10 | SE 12 | SE 12 | ESE 11 | — | — | E 16 | E 16 | ESE 13 |
| kJ | 90 | 51 | 6 | 14 | 18 | 9 | 15 | — | 12 | 10 | — | 4 | 2 | 23 | 22 | 13 | — | — | 5 | 5 | 35 |
Wind waves Height (m) Direction Period (s) | — | NE 6 | — | — | — | WNW 3 | SSW 8 | SSW 10 | SSW 14 | — | NW 4 | NW 3 | WNW 3 | S 6 | — | — | S 6 | S 8 | SSW 9 | SSW 10 | — |
| kJ | — | 8 | — | — | — | 9 | 456 | 1720 | 11176 | — | 17 | 2 | 10 | 139 | — | — | 153 | 682 | 1037 | 940 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 99 | 1 | 25 | 0 | 169 | 99 | 99 | 1 | 0 | 16 | 25 | 0 | 207 | 0 | 102 | 102 | 99 | 1 | 88 | 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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