Castlepoint - The Gap Surf Break

Lat Long: 40.91° S 176.22° E

Castlepoint - The Gap Surf Forecast and Surf Report

Issued: 11 am 05 Aug 2026 (local time)

Forecast update in  hr  min

Today's Castlepoint - The Gap sea temperature is
12.0° C
0.8° 

Castlepoint - The Gap surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Castlepoint - The Gap surf forecast from 5 Aug 2026:

  • Best quality surf: Thursday 6 Aug, 3AM (local time) - 8ft (2.5m), 11s period, S swell with cross-offshore winds.
  • Most powerful swell: Wednesday 5 Aug, 3PM (local time) - 13ft (4.0m), 12s period, S swell with 4,563 kJ wave energy.
  • Next surfable swell (1★+): Thursday 6 Aug, 3AM (local time) - 8ft (2.5m), 11s 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 Thursday (Aug 06) at 3AM. The primary swell is predicted to be 2.5m and 11s period with a secondary swell of 0.3m and 16s. Another secondary swell of 2.3m and 11s is also forecast. 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 4.0m 12s and forecast to arrive on Wednesday (Aug 05) 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 0.5m 3s period and expected on Friday (Aug 07) at 9PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Thu 6th Aug)8ft (2.5m) 11s
Best Surf 3AM (Thu 6th Aug)8ft (2.5m) 11s
Most Powerful 3PM (Wed 5th Aug)13ft (4.0m) 12s

Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.


The Lowdown

Alright, Rusty here, lookin' at what’s on the cards for Castlepoint - The Gap. We've got a bit of a mixed bag over the next couple of weeks, but there’s some proper firepower brewin' for the experienced crew, so don’t write it off just yet.

The water temps are runnin' just a touch on the cool side, 'bout 54°, which is near enough to normal for this time of year, so a good steamer is your best mate.

The week starts off pretty ordinary. The waves on the 5th are a write-off – too much wind, lumpy as anything, and the swell is messy. You're lookin' at a bit of a blank run for a few days if you want anything decent.

Things start to get interestin' on Thursday the 6th. The morning session sees clean 8ft surf from the SSW with a light cross-offshore breeze. It's not huge, but it's clean and shapely for the experienced surfers out there.

Friday the 7th is where I'd be getting keen. Clean lines all day with an offshore breeze. You've got 5ft swell in the mornin' growin' to 7ft in the arvo, and it's a long-period 14-15 second groundswell from the south. This is proper, strong energy (1853 to 1833). This kind of long-period south swell loves this setup. It's a good, solid day – a real standout for the week.

The weekend and start of next week fade out a bit. Saturday the 8th still has clean 6-5ft waves but the energy drops off. From Sunday the 9th through to Thursday the 14th, it's small and mostly average, with a lot of cross-shore chop and some poor conditions. A few clean moments, but nothing to get excited about.

Hold onto your board. Friday the 15th gets blown out by a strong southerly, with a messy 15ft swell – that’s kite-surf territory, not paddle.

But then, Monday the 17th of August is the real standout for experts. Morning brings clean, glassy 12ft surf from the SSW with a light offshore (energy at 2712). The arvo goes absolutely mental with a 16ft southerly groundswell – that’s serious power (7892) – but it might be too big for even this spot. Definitely one for the experienced chargers only.

Then Tuesday the 18th of August rolls around with another cracker for the experts. Clean 13ft southerly groundswell in the morning, with light offshore winds and massive energy (7406). That is a proper, heavy day.

After that, Wednesday the 19th and Thursday the 20th offer some cleaner but smaller options easing back into the 5-7ft range with clean winds. A nice way to wind down.

So, to wrap it up: The best of the best are Friday the 7th for a solid, clean session, and Monday the 17th and Tuesday the 18th for some serious, expert-level groundswell. Don’t sleep on the long-range promise, but keep an eye on the forecasts, yeah?

Rusty.

Short Range Forecast

Light rain (total 3mm), mostly falling on Wed morning. Very mild (max 10°C on Fri afternoon, min 5°C on Thu night). Winds decreasing (fresh winds from the S on Wed morning, light winds from the WSW by Thu night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 15°C on Sun afternoon, min 9°C on Sat morning). Wind will be generally light.

Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
2
3
4
2
3
3
3
2
2
2
2
2
0
1
1
1
1
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
4
S
12
4
S
12
2.5
SSW
12
2.3
SSW
11
1.8
SE
10
1.7
SE
11
1.6
S
15
2
S
14
1.7
S
12
1.7
S
12
1.5
S
11
1.4
SSE
11
1.2
SSE
10
1
SSE
10
0.9
SSE
11
0.9
SSE
10
0.9
SSE
10
1
S
9
0.9
SE
12
1
SSE
11
0.9
SSE
10
Wave Graph
Metric surfscale
Energy kJ
4668
4563
1660
1211
685
754
1164
1519
885
792
543
452
300
209
191
143
137
157
192
226
154
Wind (km/h)
35
S
25
SSW
15
SW
10
WSW
15
SSW
10
WNW
10
WNW
15
WNW
25
WNW
15
NW
10
NNW
15
NNW
15
N
20
NNE
25
NW
10
WNW
10
WNW
10
NW
5
N
25
NE
10
NNW
Wind State
cross
cross
cross-off
cross-off
cross
off
off
off
off
off
cross-off
cross-off
cross-off
cross
off
off
off
cross-off
cross-off
cross
cross-off
High Tide
10:02AM1.27m
10:32PM1.26m
10:50AM1.34m
11:20PM1.29m
11:40AM1.40m
00:09AM1.31m
12:32PM1.45m
1:01AM1.32m
1:27PM1.48m
1:57AM1.31m
2:22PM1.51m
2:56AM1.30m
3:19PM1.51m
Low Tide
4:22PM0.13m
4:51AM0.13m
5:13PM0.10m
5:37AM0.09m
6:03PM0.06m
6:24AM0.05m
6:54PM0.02m
7:12AM0.01m
7:45PM-0.01m
8:04AM-0.02m
8:39PM-0.03m
9:00AM-0.05m
9:37PM-0.03m
light rain
rain showers
cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
cloud
part cloud
cloud
part cloud
clear
part cloud
clear
part cloud
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:18
7:16
7:15
7:13
7:13
7:11
7:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:23
5:24
5:25
5:27
5:28
5:29
5:30
 mm
2
1
Temp °C
7
8
7
9
9
7
8
10
9
12
14
11
11
15
12
13
15
11
13
14
14
Feels °C
-2
1
2
4
4
5
5
6
4
9
12
7
7
10
7
9
12
10
8
9
13
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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