Surf Forecasts:
Castlepoint - The Gap surf forecast from 28 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 12PM (local time) - 20ft (6.0m), 14s period, SSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 1 Sep, 12PM (local time) - 20ft (6.0m), 14s period, SSW swell with 12,736 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 9PM (local time) - 2.5ft (0.8m), 11s 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 Saturday (Aug 29) at 9PM. The primary swell is predicted to be 0.8m and 11s period with a secondary swell of 0.5m and 7s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Castlepoint - The Gap in the next 16 days are 6.0m 14s and forecast to arrive on Tuesday (Sep 01) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Tuesday (Sep 01) at 12AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sat 29th Aug) | 2.5ft (0.8m) 11s |
| Best Surf | 12PM (Tue 1st Sep) | 20ft (6.0m) 14s |
| Most Powerful | 12PM (Tue 1st Sep) | 20ft (6.0m) 14s |
Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.
The Lowdown
G’day, I’m Rusty. Let’s have a look at what’s on the table for Castlepoint - The Gap over the next couple of weeks.
Right off the bat, the next few days are pretty quiet. We’ve got small, messy stuff from Friday the 28th through Sunday the 30th with tiny swell around 1ft to 5ft and a bit of cross-off wind – nothing to get excited about. That’s a bit of a flat start.
The real standout appears on Monday the 31st of August. There’s a solid SSW groundswell pushing in at 13ft with a 12-second period, and the combined energy is very strong (6419). Early morning there’s a gentle offshore breeze from the west, so it’ll be clean and lined up. That’s a big, powerful wave – definitely for experienced surfers only. If you’ve got the skill, this is the session to chase.
Tuesday the 1st of September gets even bigger, with the swell hitting 18ft from the SSW by the afternoon, and combined energy through the roof (17481). But the wind swings cross-off from the SW, so it’s going to be messy and way too large for this break. Only for the brave and the very experienced.
The rest of the first week settles down. Wednesday the 2nd and Thursday the 3rd bring cleaner conditions with offshore WNW breezes, but the swell drops back to 5ft to 8ft – manageable, but not a standout. Crowds can be likely here at times, so keep that in mind.
After a quiet stretch from the 4th to the 9th with barely any surf, we get another promising window on Thursday the 10th of September. An 8ft SSW groundswell rolls in, combined energy is strong (1157), and the morning has a gentle offshore from the WNW. That’s clean, solid, and well-shaped for those who know what they’re doing. Still expert territory.
The 11th and 12th of September see dropping but still solid swell in the 6ft to 10ft range, with mostly offshore or cross-off winds, but the wind gets gusty and strong, so keep an eye on conditions.
Water temperature sits at 54°F, which is close to average for this time of year. Nothing surprising there.
So, bottom line: if you’re experienced and can handle big swell, Monday the 31st of August is your best bet. For a slightly smaller but still meaty option, Thursday the 10th of September morning is also a cracker.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Sun night. Very mild (max 17°C on Fri afternoon, min 6°C on Sun night). Winds increasing (light winds from the N on Fri morning, fresh winds from the WNW by Sun afternoon). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Mon night. Very mild (max 14°C on Wed night, min 4°C on Tue night). Winds decreasing (near gales from the WNW on Mon night, light winds from the WNW by Tue night). | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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) | S 13 | S 12 | S 11 | S 11 | S 11 | S 11 | SSE 10 | SSW 12 | SSW 16 | SSW 12 | S 12 | SSW 14 | S 13 | SSW 13 | S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 623 | 493 | 253 | 248 | 235 | 110 | 35 | 79 | 291 | 4133 | 2400 | 2190 | 4584 | 10538 | 3064 | 1610 | 1076 | 857 | 544 | 459 | 249 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | off | off | off | off | cross | off | off | off | cross-off | cross-off | off | off | off | off | off | off | off |
High Tide | 4:57PM1.18m | 5:30AM1.08m | 5:49PM1.18m | 6:21AM1.12m | 6:43PM1.19m | 7:12AM1.17m | 7:39PM1.22m | 8:03AM1.24m | 8:33PM1.24m | 8:53AM1.31m | 9:25PM1.28m | 9:42AM1.37m | 10:15PM1.30m | ||||||||
Low Tide | 10:43AM0.21m | 11:30PM0.24m | 11:34AM0.20m | 00:25AM0.24m | 12:28PM0.19m | 1:16AM0.22m | 1:23PM0.17m | 2:05AM0.20m | 2:21PM0.15m | 2:54AM0.17m | 3:17PM0.12m | 3:42AM0.13m | 4:10PM0.07m | ||||||||
 |  |  |  | |  | | |  | | | | | | | | | | | | | |
 | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — |
 | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — |
mm | — | — | — | — | — | — | — | — | 7 | — | — | 3 | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 15 | 15 | 14 | 11 | 16 | 16 | 13 | 13 | 13 | 13 | 10 | 10 | 8 | 13 | 13 | 14 | 17 | 18 | 15 |
Feels °C | 12 | 12 | 9 | 9 | 8 | 6 | 12 | 10 | 7 | 8 | 6 | 1 | 1 | 1 | 2 | 6 | 5 | 7 | 12 | 14 | 12 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 12 | S 11 | S 11 | S 11 | S 11 | NE 7 | SSW 12 | SSW 16 | SSW 12 | S 12 | SSW 14 | NE 9 | S 13 | S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 10 |
| kJ | 623 | 493 | 253 | 248 | 235 | 110 | 26 | 79 | 291 | 2274 | 2400 | 2190 | 3 | 6943 | 3064 | 1610 | 1076 | 857 | 544 | 459 | 249 |
Swell 2 Height (m) Direction Period (s) | — | NE 7 | NE 7 | NE 7 | ENE 7 | NE 7 | SSE 10 | NE 7 | NE 9 | NE 9 | NE 10 | ENE 10 | NE 9 | — | ENE 10 | NE 10 | S 15 | NE 9 | NE 10 | NE 10 | SSE 13 |
| kJ | — | 67 | 75 | 51 | 32 | 22 | 33 | 12 | 31 | 12 | 14 | 9 | 13 | — | 10 | 4 | 218 | 3 | 4 | 4 | 158 |
Swell 3 Height (m) Direction Period (s) | — | SE 15 | SE 14 | ESE 13 | SE 12 | SE 12 | SSW 9 | SSE 10 | ENE 7 | — | SE 11 | SE 11 | — | — | — | — | S 18 | SE 12 | N 5 | ENE 10 | SSW 14 |
| kJ | — | 9 | 29 | 17 | 25 | 22 | 35 | 19 | 4 | — | 5 | 5 | — | — | — | — | 6 | 6 | 1 | 11 | 163 |
Wind waves Height (m) Direction Period (s) | NE 6 | NE 7 | NW 3 | NW 3 | NW 3 | WNW 2 | — | WSW 3 | SW 4 | SSW 12 | — | W 4 | S 13 | SSW 13 | — | NW 4 | W 3 | W 3 | WNW 3 | WNW 3 | WNW 3 |
| kJ | 37 | 200 | 4 | 4 | 6 | 1 | — | 2 | 19 | 4133 | — | 46 | 4584 | 10538 | — | 17 | 7 | 7 | 8 | 7 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 28 | 55 | 37 | 25 | 0 | 0 | 200 | 192 | 0 | 143 | 183 | 410 | 183 | 0 | 16 | 88 | 135 | 16 | 0 | 0 |
Best forecast wave conditions in The Wairarapa | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
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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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