Whites Bay surfForecast / Kaikoura and Marlborough / New Zealand

information circle12 Day Weather and Surf, issued 12 am Saturday 20 Dec 2025 NZDT
Forecast update in hr  min  s Forecast update imminent
Whites Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Whites Bay sea temperature is
16.8° C
(Which is 1.6°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Whites Bay this week:

The surf forecast for Whites Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Dec 20) at 10AM. The primary swell is predicted to be 1.5m and 8s period with a secondary swell of 0.1m and 9s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Whites Bay in the next 12 days are 2.0m 8s and forecast to arrive on Saturday (Dec 20) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 7s period and expected on Tuesday (Dec 23) at 7PM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+)10AM (Sat 20th Dec)5ft (1.5m) 8s
Best Surf10AM (Sat 20th Dec)5ft (1.5m) 8s
Most Powerful 4AM (Sat 20th Dec)6.5ft (2.0m) 8s

Table - best surf conditions forecast for Whites Bay over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 3mm), mostly falling on Fri night. Very mild (max 17°C on Mon afternoon, min 9°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Some drizzle, heaviest during Thu afternoon. Warm (max 27°C on Tue afternoon, min 12°C on Wed night). Winds increasing (calm on Tue morning, strong winds from the NW by Thu afternoon).

Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Fri
26
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
1
2
0
1
0
0
1
1
1
2
2
1
2
1
0
1
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.9
S
1.5
S
1.1
S
1.1
SSE
0.9
S
1.1
S
1
S
1
S
0.9
SSE
1.4
SSE
1.4
SSE
1.3
SSE
1.3
SSE
1
SSE
0.8
SSE
0.7
S
0.4
SSE
0.6
SSE
0.5
SSE
0.3
SSE
0.3
SSE
Period(s) (?)78888889911111110109911101099
Wave
Graph
(?)Metric surfscale
Energy kJ (?)312309161167111165143154138460452387326201108745071521616
Wind
(km/h)
10
ESE
0
NNW
15
SE
0
WSW
10
ESE
15
ESE
0
SSW
5
NE
10
NE
10
WNW
5
NNW
30
NW
10
WNW
15
NNW
35
WNW
15
NW
35
NW
45
NW
35
WNW
20
WNW
30
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
onglassonglassononglassglasscrossoffglassoffcross-
off
offcross-
off
offoffoffoffoffoff
High Tide
/ height (m)
7:21AM
1.59
7:39PM
1.49
8:02AM
1.59
8:21PM
1.48
8:42AM
1.57
9:05PM
1.47
9:23AM
1.56
9:50PM
1.45
10:05AM
1.55
10:37PM
1.44
10:49AM
1.54
11:23PM
1.45
11:37AM
1.53
Low Tide
/ height (m)
1:00AM
0.55
1:35PM
0.57
1:44AM
0.53
2:17PM
0.55
2:26AM
0.50
3:00PM
0.51
3:08AM
0.47
3:43PM
0.48
3:50AM
0.44
4:26PM
0.45
4:33AM
0.42
5:10PM
0.42
5:18AM
0.41
5:55PM
0.41
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Fri
26
Sunrise-5:45--5:46--5:46--5:47--5:47--5:48--5:48-
Sunset--8:55--8:55--8:57--8:57--8:58--8:58--8:58
rain showers
rain showers
cloud
part cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
rain showers
clear
clear
clear
Rain (mm)
21---------------1---
Temp. °C141514101312111617152527192425171919152021
Feels °C (?)12131181199131414242318191811121191214
  • Map Icons:
  • Break
  • 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 Whites Bay Surf forecast

The above surf forecast table for Whites Bay provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Whites Bay can be found by selecting the local surf guide option on the grey menu. Our Whites Bay 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 (Whites Bay) 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 Whites Bay 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.

Whites Bay is 16 km (10 miles) from the city of Blenheim. If you plan a holiday in Kaikoura and Marlborough, look for hotels and other accommodation in Blenheim. Blenheim has rooms for a wide range of budgets as well as car hire and transport links.

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