Surf Forecasts:
Castlepoint - Slippery surf forecast from 19 Oct 2026:
- Best quality surf: Wednesday 21 Oct, 1AM (local time) - 4.5ft (1.4m), 15s period, S swell with cross-offshore winds.
- Most powerful swell: Tuesday 20 Oct, 10AM (local time) - 5ft (1.6m), 16s period, S swell with 1,281 kJ wave energy.
- Next surfable swell (1★+): Wednesday 21 Oct, 1AM (local time) - 4.5ft (1.4m), 15s period with S swell.
Best Forecast Surf Conditions for Castlepoint - Slippery this week:
The surf forecast for Castlepoint - Slippery over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Oct 21) at 1AM. The primary swell is predicted to be 1.4m and 15s period with a secondary swell of 0.1m and 10s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Castlepoint - Slippery in the next 16 days are 1.6m 16s and forecast to arrive on Tuesday (Oct 20) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Monday (Oct 26) at 7AM.
| Wave Type | Time (NZDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Wed 21st Oct) | 4.5ft (1.4m) 15s |
| Best Surf | 1AM (Wed 21st Oct) | 4.5ft (1.4m) 15s |
| Most Powerful | 10AM (Tue 20th Oct) | 5ft (1.6m) 16s |
Table - best surf conditions forecast for Castlepoint - Slippery over the next 16 days.
Short Range ForecastMostly dry. Warm (max 21°C on Thu morning, min 10°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Sat morning, min 12°C on Sat night). Winds increasing (light winds from the NW on Thu night, fresh winds from the WNW by Sat night). | ||||||||||||||||||||
Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | |||||||||||||||
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 16 | S 15 | S 12 | S 11 | S 14 | SSW 13 | S 10 | S 10 | S 9 | S 10 | S 16 | SSW 13 | SSW 12 | SSW 13 | S 13 | S 9 | SSW 15 | SSW 15 | SSW 14 | SSW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1281 | 1121 | 859 | 472 | 295 | 646 | 492 | 212 | 71 | 81 | 68 | 124 | 299 | 252 | 277 | 225 | 58 | 44 | 45 | 41 | 11 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-off | cross-off | cross-on | glassy | cross-off | cross | cross-off | cross | cross-on | cross-off | off | off | off | off | off | off | off | off | off |
High Tide | 1:01PM1.20m | 1:19AM1.12m | 1:43PM1.20m | 2:02AM1.12m | 2:26PM1.21m | 2:49AM1.14m | 3:13PM1.22m | 3:39AM1.18m | 4:03PM1.25m | 4:31AM1.23m | 4:58PM1.27m | 5:24AM1.30m | 5:56PM1.30m | ||||||||
Low Tide | 6:44AM0.22m | 7:23PM0.15m | 7:22AM0.20m | 8:00PM0.16m | 8:03AM0.20m | 8:39PM0.18m | 8:47AM0.20m | 9:22PM0.20m | 9:39AM0.21m | 10:13PM0.23m | 10:37AM0.21m | 11:13PM0.25m | 11:39AM0.20m | 00:14AM0.24m | |||||||
 | |  | | | | |  | | | | | | |  | | | | | | | |
 | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — |
 | — | 7:39 | — | — | 7:40 | — | — | 7:42 | — | — | 7:43 | — | — | 7:44 | — | — | 7:45 | — | — | 7:46 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 12 | 11 | 16 | 14 | 11 | 21 | 17 | 14 | 18 | 20 | 16 | 21 | 21 | 13 | 18 | 19 | 15 | 19 | 20 | 16 |
Feels °C | 10 | 10 | 9 | 13 | 12 | 10 | 19 | 16 | 12 | 14 | 15 | 12 | 16 | 16 | 7 | 12 | 14 | 11 | 13 | 15 | 11 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 16 | S 15 | S 12 | S 11 | S 14 | SSW 13 | S 10 | S 10 | S 9 | S 10 | S 9 | SSW 13 | SSW 12 | SSW 13 | S 13 | S 9 | S 9 | SSE 11 | SSW 14 | SSW 10 |
| kJ | 1281 | 1121 | 859 | 472 | 295 | 646 | 492 | 212 | 71 | 81 | 68 | 42 | 299 | 252 | 277 | 225 | 58 | 24 | 24 | 41 | 11 |
Swell 2 Height (m) Direction Period (s) | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | ENE 13 | ENE 12 | SSW 9 | SSW 12 | SSW 9 | SSW 8 | S 12 | SSE 11 | SSE 10 | E 13 | SSW 14 | SSW 15 | SSW 15 | SSE 11 | SE 10 |
| kJ | 4 | 4 | 4 | 4 | 4 | 4 | 16 | 14 | 49 | 29 | 48 | 38 | 136 | 12 | 10 | 13 | 37 | 44 | 45 | 11 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | NE 13 | — | — | ENE 11 | ENE 11 | NE 11 | S 16 | NE 10 | NE 4 | E 14 | SE 15 | E 12 | SE 12 | E 12 | E 11 | SW 14 |
| kJ | — | — | — | — | — | 7 | — | — | 13 | 12 | 4 | 124 | 4 | 1 | 14 | 8 | 12 | 23 | 11 | 10 | 7 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SW 3 | — | — | — | — | — | NE 3 | NNW 2 | NNW 4 | WNW 2 | WNW 3 | WNW 4 | WNW 4 | WNW 4 | WNW 4 | WNW 4 | NW 3 |
| kJ | — | — | — | — | 5 | — | — | — | — | — | 3 | 1 | 10 | 1 | 10 | 12 | 13 | 10 | 23 | 18 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 114 | 107 | 0 | 0 | 3 | 0 | 0 | 24 | 0 | 52 | 92 | 24 | 0 | 0 | 19 | 0 | 0 | 4 | 139 | 19 | 331 |
Best forecast wave conditions in The Wairarapa | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Castlepoint - Slippery Surf forecast
The above surf forecast table for Castlepoint - Slippery provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Castlepoint - Slippery can be found by selecting the local surf guide option on the grey menu. Our Castlepoint - Slippery 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 - Slippery) 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 - Slippery 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 - Slippery, camping, hotels and holiday cottages in The Wairarapa, consider staying in Masterton which is 49 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 78 km (48 miles) away and Levin, 85 km (53 miles) away.
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