Surf Forecasts:
Castlepoint - Slippery surf forecast from 14 Jul 2026:
- Best quality surf: Friday 17 Jul, 12PM (local time) - 7.5ft (2.3m), 14s period, S swell with glassy winds.
- Most powerful swell: Sunday 19 Jul, 12AM (local time) - 5.5ft (1.7m), 21s period, SSW swell with 2,587 kJ wave energy.
- Next surfable swell (1★+): Wednesday 15 Jul, 3AM (local time) - 1.5ft (0.4m), 12s period with ESE 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 (Jul 15) at 3AM. The primary swell is predicted to be 0.4m and 12s 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 - Slippery in the next 16 days are 1.7m 21s and forecast to arrive on Sunday (Jul 19) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Saturday (Jul 18) at 12PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 15th Jul) | 1.5ft (0.4m) 12s |
| Best Surf | 12PM (Fri 17th Jul) | 7.5ft (2.3m) 14s |
| Most Powerful | 12AM (Sun 19th Jul) | 5.5ft (1.7m) 21s |
Table - best surf conditions forecast for Castlepoint - Slippery over the next 16 days.
Short Range ForecastMostly dry. Very mild (max 15°C on Tue afternoon, min 10°C on Thu night). Winds decreasing (fresh winds from the WNW on Thu morning, calm by Fri morning). | Days 5-7 Weather SummaryMostly dry. Very mild (max 13°C on Sat afternoon, min 8°C on Sat night). Winds increasing (calm on Fri afternoon, fresh winds from the SSW by Sat night). | ||||||||||||||||||||
Tue 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | ESE 10 | ESE 12 | E 12 | ESE 11 | ESE 13 | ESE 15 | ESE 16 | ESE 16 | S 14 | S 14 | ESE 15 | ESE 14 | ESE 14 | SSW 21 | SSW 18 | SSW 16 | S 15 | S 15 | S 15 | S 14 | S 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 19 | 52 | 69 | 43 | 56 | 167 | 298 | 635 | 985 | 2216 | 840 | 691 | 653 | 2587 | 1464 | 1055 | 1147 | 1733 | 1526 | 1126 | 653 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | off | off | off | off | off | cross-off | glassy | cross-off | cross-off | off | cross | cross | cross | cross | cross-off | cross | glassy | glassy |
High Tide | 4:35PM1.59m | 5:15AM1.35m | 5:35PM1.58m | 6:14AM1.35m | 6:35PM1.54m | 7:12AM1.34m | 7:34PM1.50m | 8:09AM1.35m | 8:32PM1.44m | 9:03AM1.36m | 9:29PM1.40m | 9:55AM1.36m | 10:23PM1.36m | 10:46AM1.36m | |||||||
Low Tide | 11:03PM-0.01m | 11:21AM-0.06m | 00:07AM-0.03m | 12:20PM-0.09m | 1:08AM-0.04m | 1:19PM-0.10m | 2:05AM-0.04m | 2:17PM-0.08m | 2:59AM-0.02m | 3:16PM-0.04m | 3:52AM0.01m | 4:14PM0.01m | 4:42AM0.05m | ||||||||
 |  | | | | | |  |  | | | | | | | | | | | | | |
 | — | — | 7:35 | — | — | 7:35 | — | — | 7:33 | — | — | 7:33 | — | — | 7:33 | — | — | 7:31 | — | — | 7:31 |
 | 5:05 | — | — | 5:06 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:08 | — | — | 5:09 | — | 5:10 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 13 | 15 | 15 | 13 | 15 | 15 | 11 | 11 | 12 | 11 | 12 | 13 | 10 | 10 | 10 | 9 | 9 | 10 | 10 | 9 |
Feels °C | 11 | 8 | 12 | 11 | 9 | 8 | 11 | 9 | 10 | 11 | 5 | 6 | 7 | 5 | 3 | 4 | 5 | 6 | 7 | 8 | 7 |
Swell 1 Height (m) Direction Period (s) | NE 6 | NE 7 | E 12 | ESE 11 | ESE 13 | ESE 15 | ESE 16 | ESE 16 | S 14 | S 14 | S 11 | ESE 14 | ESE 14 | SSW 21 | SSW 18 | SSW 16 | S 15 | S 15 | S 15 | S 14 | S 13 |
| kJ | 12 | 21 | 69 | 43 | 56 | 167 | 298 | 635 | 985 | 2216 | 675 | 691 | 653 | 2587 | 1464 | 1055 | 1147 | 1733 | 1526 | 1126 | 653 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 12 | NE 6 | SSW 19 | E 10 | SSW 14 | SSW 16 | SSW 7 | ESE 16 | ESE 16 | ESE 15 | S 9 | S 9 | ESE 13 | ESE 13 | ESE 13 | ESE 12 | ESE 12 | ESE 12 | ESE 11 | ESE 11 |
| kJ | 19 | 52 | 6 | 36 | 18 | 20 | 25 | 9 | 859 | 909 | 840 | 246 | 160 | 479 | 351 | 286 | 190 | 164 | 158 | 148 | 109 |
Swell 3 Height (m) Direction Period (s) | SSW 9 | S 9 | S 16 | NE 5 | SSW 18 | S 17 | NE 11 | SSW 16 | — | — | — | S 20 | S 23 | — | — | — | S 20 | — | — | — | — |
| kJ | 9 | 2 | 5 | 1 | 33 | 24 | 4 | 47 | — | — | — | 7 | 390 | — | — | — | 121 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 3 | NW 2 | — | — | NW 2 | WNW 3 | W 3 | — | — | — | — | NNW 3 | — | — | S 6 | S 6 | — | — | — | — | — |
| kJ | 1 | 1 | — | — | 1 | 5 | 6 | — | — | — | — | 7 | — | — | 80 | 86 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 24 | 24 | 0 | 0 | 19 | 131 | 0 | 0 | 0 | 0 | 0 | 32 | 19 | 100 | 99 | 99 | 62 | 0 | 3 | 0 | 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 - 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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