Surf Forecasts:
Castlepoint - The Gap surf forecast from 6 Sep 2026:
- Best quality surf: Sunday 13 Sep, 12AM (local time) - 15ft (4.5m), 15s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 14 Sep, 12AM (local time) - 21ft (6.5m), 14s period, SSW swell with 15,854 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 12AM (local time) - 1ft (0.3m), 17s 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 Monday (Sep 07) at 12AM. The primary swell is predicted to be 0.3m and 17s period with a secondary swell of 0.4m and 11s. 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 6.5m 14s and forecast to arrive on Monday (Sep 14) 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 0.6m 3s period and expected on Wednesday (Sep 09) at 9PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 7th Sep) | 1ft (0.3m) 17s |
| Best Surf | 12AM (Sun 13th Sep) | 15ft (4.5m) 15s |
| Most Powerful | 12AM (Mon 14th Sep) | 21ft (6.5m) 14s |
Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.
The Lowdown
Alright, Rusty here again. Let's break down what's cookin' at Castlepoint – The Gap.
The first week is pretty gnarly. Lots of wind and lumpy conditions making it tough to get a decent wave. Water temp is 12°, which is par for the course.
The only real standout session is shaping up for Friday, September 11th, in the morning. You're lookin' at a clean 7ft south swell with a 8-second period and a light offshore wind out of the WNW. Combined swell energy is 743, which is solid. That offshore breeze will keep the faces nice and clean for some proper rides. For the big dogs, Monday, September 14th, in the morning is a monster. We're talkin' 13ft of south swell, 13-second period, light cross-offshore winds, and an energy reading of 6241 – that's a serious amount of power. This is strictly for the experienced crew.
After that, we get a little window of small, clean waves around the weekend of the 19th, with 3ft to 3ft swells. It ain't huge, but the conditions will be right. The Gap is a sheltered spot, so it can be a bit of a tease when the swell is from the wrong direction. Don't expect much action until that Friday morning rolls around.
Rusty.
Short Range ForecastHeavy rain (total 48mm), heaviest during Mon morning. Very mild (max 17°C on Sun afternoon, min 6°C on Tue night). Winds decreasing (fresh winds from the SSE on Mon morning, calm by Wed morning). | Days 5-7 Weather SummaryModerate rain (total 17mm), heaviest on Thu night. Very mild (max 14°C on Wed afternoon, min 6°C on Fri night). Winds decreasing (strong winds from the WNW on Thu morning, light winds from the WNW by Fri night). | |||||||||||||||||||
Sun 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||
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) | SSW 16 | SSW 17 | S 7 | SSE 7 | SE 7 | ESE 9 | E 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | SSW 14 | S 6 | S 8 | SSW 18 | SSW 17 | S 9 | SSW 14 | SSW 15 |
Wave Graph  | ||||||||||||||||||||
 kJ | 149 | 55 | 376 | 544 | 287 | 518 | 632 | 376 | 244 | 197 | 105 | 43 | 118 | 184 | 534 | 260 | 172 | 371 | 3106 | 8358 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-on | cross-on | on | cross-on | cross-on | cross-off | glassy | cross-off | cross-off | off | cross-off | cross | off | off | cross | cross-off | cross-off | cross-off |
High Tide | 00:45AM1.30m | 1:11PM1.46m | 1:41AM1.28m | 2:07PM1.45m | 2:39AM1.26m | 3:03PM1.43m | 3:37AM1.26m | 4:01PM1.41m | 4:34AM1.26m | 4:58PM1.38m | 5:30AM1.27m | 5:54PM1.34m | ||||||||
Low Tide | 6:40PM-0.05m | 6:56AM-0.05m | 7:30PM-0.06m | 7:48AM-0.07m | 8:22PM-0.05m | 8:45AM-0.07m | 9:18PM-0.01m | 9:44AM-0.06m | 10:17PM0.03m | 10:44AM-0.04m | 11:19PM0.07m | 11:43AM-0.01m | 00:17AM0.11m | |||||||
 |  |  |  |  | | |  |  | |  |  |  |  | | |  | |  | | |
 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — |
 | 5:54 | — | — | 5:55 | — | — | 5:57 | — | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — |
mm | — | 16 | 19 | 10 | 3 | — | — | — | — | — | — | — | 2 | 9 | — | — | 6 | — | 1 | 3 |
Temp °C | 17 | 14 | 8 | 9 | 9 | 11 | 11 | 9 | 11 | 14 | 11 | 13 | 12 | 9 | 11 | 13 | 11 | 11 | 11 | 7 |
Feels °C | 13 | 10 | 1 | 2 | 4 | 6 | 6 | 6 | 7 | 9 | 5 | 6 | 8 | 4 | 5 | 7 | 4 | 6 | 5 | -2 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 11 | SSW 16 | SSW 16 | SE 7 | ESE 9 | E 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | SSW 14 | SSW 15 | S 18 | SSE 7 | SE 6 | S 9 | SSW 14 | SSW 15 |
| kJ | 149 | 51 | 48 | 24 | 287 | 518 | 632 | 376 | 244 | 197 | 105 | 43 | 118 | 84 | 167 | 191 | 36 | 335 | 3106 | 3474 |
Swell 2 Height (m) Direction Period (s) | NE 10 | SSW 17 | NE 5 | NE 10 | SSW 10 | SSW 10 | SSW 9 | S 9 | S 8 | S 8 | S 8 | S 8 | ESE 7 | SSW 20 | SSW 14 | SSW 18 | SSW 7 | SSW 14 | ENE 13 | ENE 13 |
| kJ | 4 | 55 | 1 | 4 | 60 | 77 | 69 | 56 | 35 | 34 | 21 | 11 | 20 | 75 | 39 | 260 | 51 | 371 | 17 | 16 |
Swell 3 Height (m) Direction Period (s) | NE 5 | NE 4 | NE 10 | NE 6 | E 9 | E 16 | SSW 13 | E 15 | E 15 | NE 9 | ENE 9 | ENE 9 | ENE 9 | ESE 7 | NE 8 | SE 8 | SSW 17 | ESE 6 | — | — |
| kJ | 1 | 3 | 4 | 1 | 40 | 5 | 18 | 5 | 4 | 3 | 8 | 7 | 8 | 9 | 3 | 18 | 172 | 7 | — | — |
Wind waves Height (m) Direction Period (s) | NW 3 | NW 3 | S 7 | SSE 7 | — | — | — | — | — | NE 9 | N 3 | NW 3 | NW 3 | S 6 | S 8 | — | SSW 7 | — | — | SSW 15 |
| kJ | 5 | 3 | 376 | 544 | — | — | — | — | — | 39 | 7 | 1 | 1 | 184 | 534 | — | 99 | — | — | 8358 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 28 | 0 | 102 | 99 | 99 | 105 | 111 | 0 | 0 | 16 | 28 | 74 | 16 | 76 | 0 | 1 | 4 | 66 | 333 | 76 |
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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