Surf Forecasts:
Castlepoint - The Gap surf forecast from 14 Aug 2026:
- Best quality surf: Thursday 20 Aug, 9PM (local time) - 6.5ft (2.0m), 12s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 6AM (local time) - 11ft (3.5m), 11s period, S swell with 3,199 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 9PM (local time) - 6.5ft (2.0m), 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 Thursday (Aug 20) at 9PM. The primary swell is predicted to be 2.0m and 12s period with a secondary swell of 0.3m and 13s. 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 3.5m 11s and forecast to arrive on Wednesday (Aug 19) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 5s period and expected on Sunday (Aug 16) at 3AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 20th Aug) | 6.5ft (2.0m) 12s |
| Best Surf | 9PM (Thu 20th Aug) | 6.5ft (2.0m) 12s |
| Most Powerful | 6AM (Wed 19th Aug) | 11ft (3.5m) 11s |
Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.
The Lowdown
Alright, grab a coffee, let's look at what's coming up for The Gap at Castlepoint. We've got a solid 16-day window here, but you're gonna have to be patient, my friend. For the first week, it's a write-off with big, messy southerly winds and swell. We don't really see anything worthwhile until Thursday, the 21st of August.
The first real chance to get wet comes on Thursday morning, the 21st. We've got an 8ft swell from the south with a long 11-second period, and the wind is coming from the southwest, switching to a cross-offshore breeze. It will be clean, but that's a lot of water moving around for a beginner. The combined wave energy is moderate (1456), so you'll feel the power.
The standout is Friday, the 22nd. The morning is where it's at, with a 5ft south swell at a nice 13-second period. The wind is a clean offshore from the WNW, blowing at 12 mph. It'll be glassy and well-shaped. This is the pick of the bunch for the first week. The combined swell energy is a moderate 762, which is good for a point like this. The afternoon holds similar conditions, but the swell drops to 4ft.
After that, things get small again. The following Thursday, the 27th of August, some long-period energy shows up on the horizon. The afternoon specifically is looking very promising. A 4ft south swell with an incredibly long 18-second period and light NNW winds. The combined energy jumps to a solid 1131. This is a groundswell, and for a sheltered spot like The Gap, that long period will produce some proper, lined-up waves. It's a bit out there, but keep your eye on it.
Overall, the water's sitting at about 53°, which is just slightly chillier than average for this time of year—nothing you haven't felt before. The crowds might be an issue here, so expect some company.
Right, the long-range promise for the 27th is where you want to be, but the 21st and 22nd are your sure bets to get a few clean ones.
Rusty.
Short Range ForecastHeavy rain (total 28mm), heaviest during Sun morning. Very mild (max 13°C on Fri afternoon, min 6°C on Sun morning). Winds increasing (light winds from the ESE on Sat afternoon, strong winds from the S by Sun afternoon). | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Tue night. Very mild (max 11°C on Wed afternoon, min 7°C on Mon night). Winds decreasing (strong winds from the SSW on Tue morning, moderate winds from the SSW by Thu morning). | |||||||||||||||||||
Fri 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||
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) | ENE 7 | ENE 7 | ENE 8 | ENE 9 | ENE 9 | SSW 9 | S 10 | S 10 | SSE 9 | SSE 9 | SSE 9 | SSW 9 | SSW 9 | S 10 | S 11 | S 10 | S 10 | S 11 | S 12 | S 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 124 | 161 | 367 | 436 | 432 | 1465 | 2481 | 2616 | 1755 | 1202 | 860 | 1245 | 1519 | 2186 | 3028 | 1948 | 2432 | 1417 | 1389 | 802 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-off | cross | cross | cross-on | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross-off | cross | cross-off |
High Tide | 6:15PM1.43m | 6:49AM1.30m | 7:13PM1.39m | 7:45AM1.32m | 8:10PM1.35m | 8:38AM1.34m | 9:04PM1.33m | 9:29AM1.35m | 9:55PM1.31m | 10:17AM1.34m | 10:43PM1.29m | 11:05AM1.33m | 11:28PM1.26m | |||||||
Low Tide | 00:43AM0.02m | 12:59PM-0.06m | 1:39AM0.04m | 1:57PM-0.02m | 2:32AM0.06m | 2:55PM0.03m | 3:23AM0.10m | 3:50PM0.08m | 4:12AM0.13m | 4:42PM0.13m | 4:59AM0.17m | 5:31PM0.16m | ||||||||
 |  |  | |  |  | |  |  | | |  | |  | | |  | | |  | |
 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — |
 | 5:32 | — | — | 5:34 | — | — | 5:35 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — |
mm | — | — | 1 | 2 | 7 | 10 | 7 | 1 | — | — | — | — | — | 2 | 1 | — | — | — | — | — |
Temp °C | 13 | 13 | 12 | 12 | 12 | 8 | 7 | 9 | 8 | 8 | 8 | 10 | 10 | 10 | 10 | 11 | 9 | 9 | 10 | 8 |
Feels °C | 10 | 10 | 10 | 11 | 10 | -2 | -4 | -2 | -1 | 0 | 1 | 1 | 1 | 2 | 2 | 4 | 3 | 3 | 6 | 6 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | ESE 14 | ENE 8 | ENE 9 | ENE 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | SE 9 | SE 9 | — | SSW 16 | S 15 | S 10 | S 11 | S 12 | S 12 |
| kJ | 20 | 18 | 367 | 436 | 432 | 225 | 185 | 127 | 137 | 202 | 131 | 266 | 246 | — | 620 | 1149 | 1327 | 1417 | 1389 | 802 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSW 15 | ESE 13 | SSW 18 | SSW 19 | ESE 12 | S 20 | SSW 17 | SSW 16 | SSW 15 | SSW 14 | ENE 9 | — | — | SE 11 | SE 13 | S 14 | SE 11 | SE 14 | S 16 |
| kJ | 7 | 22 | 17 | 61 | 271 | 15 | 30 | 311 | 320 | 222 | 156 | 27 | — | — | 32 | 42 | 602 | 20 | 29 | 249 |
Swell 3 Height (m) Direction Period (s) | ESE 14 | SE 8 | SSW 18 | ESE 13 | SE 10 | — | — | — | E 11 | SE 11 | — | — | — | — | — | — | SE 12 | ESE 14 | ESE 12 | SE 13 |
| kJ | 20 | 3 | 31 | 17 | 4 | — | — | — | 37 | 194 | — | — | — | — | — | — | 37 | 19 | 13 | 25 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | — | — | — | SSW 9 | S 10 | S 10 | SSE 9 | SSE 9 | SSE 9 | SSW 9 | SSW 9 | S 10 | S 11 | S 10 | S 10 | — | — | NW 3 |
| kJ | 124 | 161 | — | — | — | 1465 | 2481 | 2616 | 1755 | 1202 | 860 | 1245 | 1519 | 2186 | 3028 | 1948 | 2432 | — | — | 5 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 88 | 88 | 88 | 88 | 1 | 287 | 310 | 268 | 102 | 268 | 1 | 190 | 169 | 135 | 190 | 250 | 102 | 1 | 102 | 0 |
Best forecast wave conditions in The Wairarapa | ||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Castlepoint - The Gap surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest