Surf Forecasts:
Castlepoint - The Gap surf forecast from 14 Sep 2026:
- Best quality surf: Monday 21 Sep, 12AM (local time) - 10ft (3.0m), 14s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 21 Sep, 9AM (local time) - 8ft (2.4m), 19s period, SSW swell with 3,880 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 9PM (local time) - 4.5ft (1.4m), 10s 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 Monday (Sep 14) at 9PM. The primary swell is predicted to be 1.4m and 10s period with a secondary swell of 0.9m and 12s. 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 2.4m 19s and forecast to arrive on Monday (Sep 21) at 9AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 6s period and expected on Friday (Sep 18) at 9PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Mon 14th Sep) | 4.5ft (1.4m) 10s |
| Best Surf | 12AM (Mon 21st Sep) | 10ft (3.0m) 14s |
| Most Powerful | 9AM (Mon 21st Sep) | 8ft (2.4m) 19s |
Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.
The Lowdown
G’day, Rusty here, lookin’ at Castlepoint – The Gap over the next couple weeks. Water temp is around 54°, pretty normal for the season. The first decent wave comes on Monday the 14th, early morning – glassy flat calm, clean surface, with a solid 6ft south swell, 12-second period, and energy reading of 1088 (moderate-strong). That’s a good one for beginners, but it’s pushin’ the size limit for newer surfers. The wind kicks up later that day and messes it up.
Tuesday the 15th drops way off, tiny and average. Wednesday and Thursday are weak and not worth the paddle.
The real standout is Monday the 21st, early morning. Castlepoint – The Gap (Castlepoint) gets a big shot of south-southwest groundswell, 8ft with a very long 19-second period. The energy is huge at 3910 (very strong). A clean moderate north-west offshore will have those waves lookin’ mean. That’s for experienced surfers only – a lot of power. That long-period swell will work best on the point.
The morning of Tuesday the 29th is another good window – clean 6ft south swell, 13-second period, light offshore breeze, energy at 1151 (moderate-strong). That’ll be a fun session.
Lot of choppy, cross-shore junk in between, but those two mornings are the ones to pick. The 21st is the big ticket if you’re ready for it.
Rusty
Short Range ForecastMostly dry. Very mild (max 16°C on Tue morning, min 8°C on Mon night). Winds increasing (calm on Mon morning, fresh winds from the NW by Wed morning). | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Thu night. Very mild (max 15°C on Thu morning, min 7°C on Fri night). Winds increasing (light winds from the WSW on Fri night, strong winds from the W by Sat night). | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
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 12 | S 12 | S 11 | SSE 10 | S 9 | SE 8 | SE 8 | SE 11 | SE 10 | ESE 10 | ESE 10 | SSW 6 | SSE 7 | SSE 7 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 14 | S 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1083 | 902 | 515 | 271 | 203 | 74 | 35 | 32 | 37 | 68 | 60 | 95 | 330 | 268 | 740 | 242 | 371 | 356 | 183 | 143 | 3629 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-off | cross-off | cross | cross-off | off | off | cross-off | cross-off | cross-off | cross | cross-on | cross | cross-off | cross-off | off | off | cross-off | cross-off | cross-off |
High Tide | 7:45PM1.29m | 8:11AM1.34m | 8:37PM1.28m | 8:59AM1.34m | 9:26PM1.27m | 9:46AM1.32m | 10:12PM1.25m | 10:31AM1.30m | 10:54PM1.23m | 11:15AM1.27m | 11:35PM1.19m | 11:58AM1.24m | 00:15AM1.15m | ||||||||
Low Tide | 1:36PM0.08m | 2:01AM0.17m | 2:31PM0.13m | 2:50AM0.20m | 3:25PM0.16m | 3:37AM0.22m | 4:14PM0.18m | 4:23AM0.23m | 5:00PM0.19m | 5:06AM0.23m | 5:43PM0.18m | 5:46AM0.23m | 6:22PM0.17m | ||||||||
 | |  | | |  | | | |  |  |  | | | | | | |  | | | |
 | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:11 | — | — | 6:09 | — | — | 6:07 | — | — |
 | — | 6:02 | — | — | 6:04 | — | — | 6:05 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 8 | — | — | — | — | — | — | 2 | — | — |
Temp °C | 13 | 12 | 10 | 16 | 16 | 12 | 15 | 15 | 13 | 15 | 15 | 10 | 10 | 10 | 8 | 14 | 15 | 14 | 11 | 10 | 8 |
Feels °C | 10 | 8 | 6 | 12 | 12 | 6 | 9 | 8 | 7 | 11 | 13 | 4 | 3 | 4 | 5 | 11 | 12 | 8 | 2 | 2 | 3 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | S 11 | SSE 10 | S 9 | SE 8 | SE 8 | SE 8 | SE 10 | ESE 10 | ESE 10 | ESE 9 | SE 13 | SE 12 | SE 6 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 14 | S 14 |
| kJ | 1083 | 902 | 515 | 271 | 203 | 74 | 35 | 24 | 37 | 68 | 60 | 33 | 164 | 172 | 98 | 242 | 371 | 356 | 183 | 143 | 3629 |
Swell 2 Height (m) Direction Period (s) | NE 12 | NE 11 | NE 13 | SSW 11 | SSW 15 | S 9 | SSW 8 | SE 11 | ESE 12 | SSW 14 | SSW 14 | SE 14 | NE 7 | SSW 16 | SE 12 | SE 11 | SE 11 | SE 11 | ESE 11 | SE 11 | ESE 11 |
| kJ | 5 | 5 | 7 | 91 | 21 | 39 | 23 | 32 | 29 | 20 | 41 | 54 | 14 | 49 | 202 | 153 | 126 | 123 | 79 | 58 | 47 |
Swell 3 Height (m) Direction Period (s) | — | — | E 11 | E 10 | NE 13 | SSW 12 | SSW 13 | S 8 | SSW 14 | S 8 | NE 12 | NE 6 | SSW 17 | NE 8 | NE 9 | SE 6 | SE 7 | ENE 9 | ENE 8 | NE 7 | — |
| kJ | — | — | 2 | 2 | 7 | 26 | 17 | 12 | 18 | 1 | 5 | 9 | 56 | 9 | 43 | 27 | 26 | 16 | 6 | 2 | — |
Wind waves Height (m) Direction Period (s) | — | — | NNE 3 | NNE 3 | NE 3 | NW 3 | NW 3 | NW 3 | NW 3 | NW 3 | NE 3 | SSW 6 | SSE 7 | SSE 7 | SSW 15 | WNW 3 | NW 3 | W 3 | WSW 4 | S 6 | — |
| kJ | — | — | 1 | 1 | 2 | 2 | 2 | 3 | 2 | 2 | 2 | 95 | 330 | 268 | 740 | 1 | 3 | 5 | 15 | 104 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 99 | 0 | 0 | 28 | 28 | 74 | 16 | 28 | 28 | 0 | 102 | 102 | 335 | 0 | 0 | 0 | 143 | 235 | 99 | 0 |
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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