Castlepoint - The Gap Surf Break

Lat Long: 40.91° S 176.22° E

Castlepoint - The Gap Surf Forecast and Surf Report

Issued: 11 am 06 Aug 2026 (local time)

Forecast update in  hr  min

Today's Castlepoint - The Gap sea temperature is
12.1° C
0.7° 

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 6 Aug 2026:

  • Best quality surf: Friday 7 Aug, 9AM (local time) - 5.5ft (1.7m), 15s period, S swell with offshore winds.
  • Most powerful swell: Friday 7 Aug, 12PM (local time) - 7ft (2.2m), 14s period, S swell with 1,941 kJ wave energy.
  • Next surfable swell (1★+): Thursday 6 Aug, 9PM (local time) - 5ft (1.5m), 10s period with SSE 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 9PM. The primary swell is predicted to be 1.5m and 10s period with a secondary swell of 1.2m and 10s. 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 2.2m 14s and forecast to arrive on Friday (Aug 07) at 12PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Saturday (Aug 08) at 12AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Thu 6th Aug)5ft (1.5m) 10s
Best Surf 9AM (Fri 7th Aug)5.5ft (1.7m) 15s
Most Powerful12PM (Fri 7th Aug)7ft (2.2m) 14s

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


The Lowdown

G’day, Rusty here. Right, let’s talk about the surf ahead at Castlepoint – The Gap.

We’ve got a patchy run of waves over the next two and a bit weeks, with one clear standout that’ll get the heart racing. The water’s sitting at a cool 54°, which is about what you’d expect for this time of year, nothing out of the ordinary.

The first few days are where the action is, then things drop right off into a long, quiet stretch before a possible late pulse on August 16th.

Thursday, August 6th kicks it off with a solid, clean morning. Swell is 8ft from the SSW, period 11 seconds, and the combined energy is pumping hard at 2499 – that’s proper strong stuff. Wind is WSW at 15 km/h, cross-off, keeping the faces tidy. This is serious wave energy for experienced surfers only, the kind of morning that’ll have your arms shaking. The SSW direction isn’t a perfect match for the optimum ESE, but with that much juice and clean conditions, it’ll still be a wild ride.

Friday, August 7th is where we hit the jackpot. Morning sees a nice 6ft swell from the South, but the period stretches to 15 seconds – that’s proper groundswell, long and powerful. Offshore wind from the WNW at 10 km/h, glassy clean, and combined energy at 2001. The afternoon stays clean with offshore wind and the swell bumps up a touch to 7ft, period 14 seconds, energy at 2049. This is it – the best on offer. The long period means it’ll be a bit walled and fast over the sandbanks, so this break’s setup will suit the rip and the reefy edges. Expect long waits between sets, but when they come, you’ll be on a freight train. Magical.

Saturday, August 8th still offers some fun, with 6ft from the South, period 12 seconds, and offshore NW wind at 15 km/h in the morning. Energy drops to 819, so it’s moderate, but the quality is still there. Sunday and Monday see the swell fade and the winds turn onshore, so quality drops away fast.

From Sunday, August 9th right through to Thursday, August 14th, it’s a lean patch. Swell drops below 3ft for days, with mostly poor conditions and messy wind. A few glassy moments on Monday afternoon and some clean days, but the waves are tiny and weak – not worth paddling for.

Friday, August 15th is still small and messy, but on Saturday, August 16th there’s a late pulse of swell. Morning brings 6ft from the SSW, period 10 seconds, with fresh offshore NW wind at 30 km/h – clean, solid, and energetic at 653. The afternoon stays clean with 5ft. It’s promising, but being over a week away, it’s one to keep an eye on. The rest of the forecast after that looks ugly with strong onshore winds and messy surf, so don’t bank on it.

So, the standout is without a doubt Friday, August 7th – get out there early for the best of it. The Saturday, August 16th looks worth a look too, but hold off on booking the day off yet.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 13°C on Sat afternoon, min 5°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 6mm), mostly falling on Sun night. Very mild (max 14°C on Sun afternoon, min 9°C on Mon night). Wind will be generally light.

Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
2
3
4
4
3
2
2
2
1
0
1
1
1
1
0
0
0
1
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.3
SSW
11
1.8
SE
10
1.8
SE
11
1.7
S
15
2.2
S
14
1.7
S
12
1.7
S
12
1.5
S
11
1.4
SSE
10
1.3
SSE
10
1.1
SSE
10
0.9
SSE
10
0.9
SSE
10
0.8
SSE
10
0.6
SE
12
0.9
SE
11
0.9
SSE
11
0.8
SSE
10
0.6
SSE
8
0.6
SE
9
0.9
SE
8
Wave Graph
Metric surfscale
Energy kJ
1211
685
828
1262
1781
871
778
543
443
349
255
187
140
105
118
189
186
107
47
65
107
Wind (km/h)
15
WSW
15
SSW
10
WNW
10
WNW
5
WNW
20
NW
15
NW
10
NW
10
NNW
10
NNE
20
NE
25
NW
10
WNW
5
S
5
SSW
10
ENE
20
ENE
15
NE
10
N
15
NNW
25
NW
Wind State
cross-off
cross
off
off
off
off
off
cross-off
cross-off
cross
cross
off
off
glassy
glassy
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
High Tide
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
3:56AM1.29m
4:17PM1.50m
Low Tide
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
10:00AM-0.07m
10:39PM-0.01m
part cloud
clear
clear
clear
cloud
part cloud
cloud
cloud
part cloud
cloud
light rain
rain showers
clear
clear
part cloud
cloud
cloud
light rain
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:16
7:15
7:13
7:13
7:11
7:09
7:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:24
5:25
5:27
5:28
5:29
5:30
5:30
 mm
1
3
2
Temp °C
9
9
6
9
10
10
12
13
11
13
14
12
14
14
10
11
11
11
15
16
14
Feels °C
4
4
3
6
8
6
9
11
8
9
10
8
11
13
9
8
7
8
12
13
11
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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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