Surf Forecasts:
Castlepoint - The Gap surf forecast from 21 Aug 2026:
- Best quality surf: Monday 24 Aug, 12PM (local time) - 10ft (3.0m), 14s period, SSW swell with glassy winds.
- Most powerful swell: Monday 24 Aug, 12PM (local time) - 10ft (3.0m), 14s period, SSW swell with 3,197 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 6PM (local time) - 4.5ft (1.4m), 13s 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 Friday (Aug 21) at 6PM. The primary swell is predicted to be 1.4m and 13s period with a secondary swell of 0.6m and 16s. 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 3.0m 14s and forecast to arrive on Monday (Aug 24) at 12PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 10s period and expected on Monday (Aug 24) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Fri 21st Aug) | 4.5ft (1.4m) 13s |
| Best Surf | 12PM (Mon 24th Aug) | 10ft (3.0m) 14s |
| Most Powerful | 12PM (Mon 24th Aug) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.
The Lowdown
Rusty here again, same story but in feet. For the swell height, take the metric numbers and multiply by 3 to get feet. A 1.7m becomes about 6ft. A 2.3m is about 8ft. The 6.5m on September 3rd works out to about 22ft. Winds: 1 km/h is about 0.62 mph, so 5 km/h is about 3 mph, and 50 km/h is about 31 mph. Water temperatures in Fahrenheit: 12°C is about 53°F. All other guidance and details remain the same.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sun morning. Very mild (max 14°C on Sat afternoon, min 8°C on Fri morning). Winds increasing (calm on Fri morning, near gales from the WNW by Sun morning). | Days 4-6 Weather SummaryMostly dry. Very mild (max 16°C on Tue afternoon, min 10°C on Mon morning). Winds increasing (calm on Mon morning, fresh winds from the WNW by Tue night). | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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 16 | S 13 | S 12 | S 11 | S 11 | S 11 | S 10 | ESE 13 | SSW 9 | SSW 11 | SSW 14 | SSW 12 | S 11 | S 10 | SSW 14 | SSW 17 | SSW 16 | SSW 15 | SSW 14 | S 17 | S 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1384 | 905 | 480 | 300 | 233 | 141 | 50 | 34 | 45 | 1256 | 2776 | 833 | 396 | 259 | 210 | 510 | 534 | 487 | 395 | 692 | 743 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | off | off | off | off | off | off | off | cross | off | off | off | off | off | off | off | off | cross-off | cross-off |
High Tide | 11:52AM1.31m | 00:11AM1.22m | 12:37PM1.28m | 00:54AM1.18m | 1:20PM1.26m | 1:39AM1.14m | 2:01PM1.24m | 2:24AM1.10m | 2:42PM1.22m | 3:09AM1.08m | 3:24PM1.20m | 3:54AM1.07m | 4:09PM1.18m | ||||||||
Low Tide | 6:17PM0.18m | 6:24AM0.22m | 6:59PM0.20m | 7:03AM0.24m | 7:40PM0.21m | 7:42AM0.24m | 8:20PM0.21m | 8:22AM0.24m | 9:01PM0.22m | 9:06AM0.23m | 9:45PM0.23m | 9:53AM0.22m | 10:35PM0.24m | ||||||||
 | |  | | |  |  | | | | | | | | | |  | | | | | |
 | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — |
 | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — | — | 5:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — |
mm | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 11 | 13 | 11 | 13 | 14 | 14 | 14 | 13 | 11 | 13 | 14 | 11 | 15 | 16 | 13 | 15 | 14 | 13 | 14 | 16 | 13 |
Feels °C | 9 | 11 | 5 | 7 | 8 | 7 | 5 | 2 | 3 | 10 | 10 | 5 | 10 | 12 | 5 | 9 | 8 | 6 | 8 | 12 | 8 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 13 | S 12 | S 11 | S 11 | S 11 | S 10 | NE 7 | SSW 9 | SSW 11 | SSW 14 | SSW 12 | S 11 | S 10 | S 9 | SSW 17 | SSW 16 | SSW 15 | SSW 14 | S 17 | S 16 |
| kJ | 1384 | 905 | 480 | 300 | 233 | 141 | 50 | 16 | 45 | 1256 | 2776 | 833 | 396 | 259 | 104 | 510 | 534 | 487 | 395 | 692 | 743 |
Swell 2 Height (m) Direction Period (s) | ESE 9 | ESE 11 | ESE 10 | ESE 9 | E 14 | ESE 13 | ESE 13 | ESE 13 | ESE 13 | ESE 13 | ESE 13 | ESE 14 | SSW 16 | SSW 15 | SSW 14 | S 8 | ESE 13 | ESE 12 | ESE 13 | ESE 12 | ESE 12 |
| kJ | 26 | 64 | 18 | 8 | 16 | 34 | 33 | 34 | 32 | 32 | 34 | 36 | 89 | 130 | 210 | 34 | 17 | 15 | 16 | 13 | 14 |
Swell 3 Height (m) Direction Period (s) | ESE 11 | — | SE 12 | SE 11 | SE 12 | SW 13 | NNE 5 | SSE 10 | NNE 7 | E 13 | — | SSW 18 | ESE 13 | ESE 13 | ESE 12 | ESE 14 | E 10 | E 10 | E 10 | E 10 | E 16 |
| kJ | 24 | — | 6 | 5 | 5 | 6 | 2 | 18 | 4 | 28 | — | 31 | 17 | 17 | 14 | 18 | 2 | 2 | 2 | 2 | 5 |
Wind waves Height (m) Direction Period (s) | — | — | NNW 3 | NNW 3 | NW 3 | NNW 3 | NW 3 | W 4 | W 4 | — | — | NW 2 | NNW 4 | NW 2 | WNW 2 | WNW 2 | NW 3 | WNW 3 | NW 3 | NW 3 | NNW 3 |
| kJ | — | — | 1 | 1 | 3 | 3 | 8 | 27 | 43 | — | — | 1 | 11 | 1 | 1 | 1 | 2 | 5 | 1 | 2 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 25 | 16 | 74 | 55 | 192 | 143 | 254 | 0 | 4 | 28 | 0 | 0 | 16 | 16 | 16 | 0 | 28 | 16 | 28 |
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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