Surf Forecasts:
Castlepoint - The Gap surf forecast from 9 Aug 2026:
- Best quality surf: Saturday 15 Aug, 9AM (local time) - 8ft (2.5m), 9s period, E swell with cross-offshore winds.
- Most powerful swell: Sunday 16 Aug, 3PM (local time) - 15ft (4.5m), 11s period, S swell with 4,489 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 6AM (local time) - 3ft (0.9m), 10s period with SSE 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 (Aug 10) at 6AM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.4m 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 4.5m 11s and forecast to arrive on Sunday (Aug 16) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Saturday (Aug 15) at 6PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Mon 10th Aug) | 3ft (0.9m) 10s |
| Best Surf | 9AM (Sat 15th Aug) | 8ft (2.5m) 9s |
| Most Powerful | 3PM (Sun 16th Aug) | 15ft (4.5m) 11s |
Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.
The Lowdown
Right then, let's have a look what's on the cards for the next couple of weeks at Castlepoint – The Gap. It's a classic spot, but this forecast is a real mixed bag.
For the next few days, honestly, it's looking pretty flat and messy. There's just nothing doing from Sunday the 9th through to Wednesday the 13th, with hardly any rideable waves. You'd be better off leaving the board in the car. Things start to look a bit more promising around Thursday the 15th of August, but even then, it's a bit of a wait.
The real standout window is going to be Saturday the 15th of August. The morning is looking magic. We've got a solid 8ft easterly swell, and it's packing some proper grunt with a combined energy of 1042. The wind is light, swinging offshore, which means the wave faces should be glassy and clean. This is the one to circle on the calendar – it's going to be a great session for anyone who knows what they're doing. Later that afternoon the wind picks up, so make the most of the morning.
Looking further ahead to the following week, keep an eye on Wednesday the 19th of August. There’s a big, powerful 10ft southerly groundswell hitting, with a very long 15 second period. The combined energy is massive at 4356, so this is proper heavy water. With a light offshore wind in the morning, it’s going to be exceptional for experienced surfers. This is the sort of day where The Gap really comes alive, but it's not for the faint-hearted. The following morning on the 20th also looks promising with a 7ft southerly swell and clean offshore winds, but that 19th is the real highlight.
Overall, there’s a lot of junk to sift through, but if you’re patient, the 15th and especially the 19th of August are worth holding out for.
- Rusty
Short Range ForecastLight rain (total 3mm), mostly falling on Sun morning. Very mild (max 14°C on Sun afternoon, min 9°C on Mon night). Winds decreasing (fresh winds from the WNW on Sun night, light winds from the SE by Tue morning). | Days 4-6 Weather SummaryHeavy rain (total 24mm), heaviest during Fri night. Very mild (max 14°C on Fri morning, min 9°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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 10 | S 13 | S 10 | SSE 10 | SSE 9 | SSW 9 | SSW 8 | SSE 8 | SE 8 | SE 7 | SE 8 | ESE 9 | ESE 8 | ESE 8 | ENE 6 | ENE 7 | E 7 | ENE 8 | E 9 | E 10 | SSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 296 | 206 | 216 | 169 | 124 | 860 | 300 | 346 | 341 | 104 | 126 | 127 | 103 | 73 | 94 | 276 | 298 | 438 | 1005 | 1380 | 1094 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | off | off | cross | cross-off | cross | on | cross-on | cross | cross | cross | cross-off | cross-on | cross | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off |
High Tide | 1:27PM1.48m | 1:57AM1.31m | 2:22PM1.51m | 2:56AM1.30m | 3:19PM1.51m | 3:56AM1.29m | 4:17PM1.50m | 4:54AM1.29m | 5:16PM1.47m | 5:52AM1.29m | 6:15PM1.43m | 6:49AM1.30m | 7:13PM1.39m | ||||||||
Low Tide | 7:45PM-0.01m | 8:04AM-0.02m | 8:39PM-0.03m | 9:00AM-0.05m | 9:37PM-0.03m | 10:00AM-0.07m | 10:39PM-0.01m | 11:01AM-0.09m | 11:43PM0.00m | 12:00PM-0.08m | 00:43AM0.02m | 12:59PM-0.06m | 1:39AM0.04m | ||||||||
 |  |  |  | |  |  | | |  | |  | | | | | |  | |  | | |
 | 7:13 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — |
 | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — |
mm | 1 | — | — | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — | 1 | 23 | 3 | 7 | 11 |
Temp °C | 10 | 14 | 12 | 14 | 11 | 10 | 11 | 11 | 11 | 11 | 12 | 10 | 12 | 13 | 11 | 14 | 13 | 13 | 13 | 12 | 7 |
Feels °C | 5 | 11 | 6 | 10 | 6 | 5 | 9 | 8 | 7 | 6 | 7 | 7 | 9 | 9 | 9 | 13 | 11 | 10 | 13 | 8 | -5 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 9 | S 10 | SSE 10 | SSE 9 | S 9 | S 8 | SSE 8 | SE 8 | SE 7 | SE 8 | ENE 6 | ESE 8 | ESE 8 | ESE 7 | E 7 | SSE 11 | E 8 | E 9 | E 10 | E 10 |
| kJ | 296 | 108 | 216 | 169 | 124 | 554 | 247 | 346 | 341 | 104 | 126 | 51 | 103 | 73 | 37 | 178 | 12 | 337 | 1005 | 1380 | 584 |
Swell 2 Height (m) Direction Period (s) | S 14 | S 13 | NE 6 | NE 7 | SE 12 | SE 12 | SSE 12 | S 15 | SSE 11 | ENE 5 | S 10 | ESE 9 | NE 6 | SSE 9 | SE 8 | SE 9 | ESE 14 | ESE 14 | SSW 14 | SSW 15 | — |
| kJ | 232 | 206 | 19 | 22 | 75 | 175 | 280 | 18 | 69 | 27 | 54 | 127 | 35 | 30 | 35 | 20 | 20 | 19 | 19 | 21 | — |
Swell 3 Height (m) Direction Period (s) | E 13 | ENE 6 | E 13 | E 12 | NE 6 | SSW 16 | S 14 | SW 13 | SW 12 | SSE 10 | SE 11 | SSE 10 | SSE 9 | ESE 13 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | ESE 13 | — | — |
| kJ | 14 | 27 | 12 | 12 | 6 | 24 | 15 | 7 | 6 | 41 | 33 | 74 | 46 | 17 | 27 | 25 | 22 | 21 | 18 | — | — |
Wind waves Height (m) Direction Period (s) | ENE 4 | — | WNW 3 | WNW 3 | SSW 3 | SSW 9 | SSW 8 | — | NE 7 | ENE 5 | ENE 5 | NE 6 | NE 6 | NE 6 | ENE 6 | ENE 7 | E 7 | ENE 8 | — | — | SSW 8 |
| kJ | 6 | — | 3 | 1 | 2 | 860 | 300 | — | 2 | 42 | 31 | 101 | 75 | 33 | 94 | 276 | 298 | 438 | — | — | 1094 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 28 | 28 | 16 | 0 | 66 | 1 | 1 | 88 | 105 | 37 | 88 | 28 | 0 | 88 | 28 | 55 | 88 | 88 | 0 | 66 | 169 |
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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