Nine Mile surf break

Nine Mile surfForecast / West Coast South Island / New Zealand

information circle12 Day Weather and Surf, issued 6 am Friday 12 Dec 2025 NZDT
Forecast update in hr  min  s Forecast update imminent
Nine Mile surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Nine Mile sea temperature is
17.5° C
(Which is 2.1°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Nine Mile this week:

The surf forecast for Nine Mile over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Dec 12) at 10PM. The primary swell is predicted to be 1.6m and 8s period with a secondary swell of 0.9m and 13s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Nine Mile in the next 12 days are 2.5m 16s and forecast to arrive on Tuesday (Dec 16) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 7s period and expected on Wednesday (Dec 17) at 7AM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+)10PM (Fri 12th Dec)5ft (1.6m) 8s
Best Surf 1AM (Wed 17th Dec)8ft (2.5m) 16s
Most Powerful10PM (Tue 16th Dec)8ft (2.5m) 16s

Table - best surf conditions forecast for Nine Mile over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Some drizzle, heaviest during Sun night. Very mild (max 17°C on Sun morning, min 11°C on Fri night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 73mm), heaviest during Tue morning. Very mild (max 19°C on Mon morning, min 10°C on Wed night). Mainly fresh winds.

Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
0
3
2
1
2
1
1
1
0
0
1
1
3
5
3
1
4
3
2
2
Swell
Height Map
Wave Height (m) & direction (?)
1.3
W
1.2
W
1.7
W
1.1
W
1.4
W
1.1
W
1
W
0.8
WSW
0.5
W
0.5
W
0.6
W
2.3
NNW
2.5
NW
2
W
2.5
W
2.5
W
2.5
W
2.1
W
1.7
W
1.5
W
1.1
W
Period(s) (?)131391212111111101413891616151414131211
Wave
Graph
(?)Metric surfscale
Energy kJ (?)60049846333653729723815348106128679107521573269283025571614941636302
Wind
(km/h)
5
SW
15
W
5
ENE
10
NNW
10
NW
5
E
5
NNW
10
NW
10
ENE
20
N
25
N
30
NNE
15
WSW
10
NW
5
S
5
SSW
20
SW
10
NE
10
NNE
10
NNW
5
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
oncross-
off
cross-
on
cross-
on
offcross-
on
cross-
on
cross-
off
cross-
off
crosscross-
off
oncross-
on
glasscross-
on
cross-
on
cross-
off
cross-
off
crossglass
High Tide
/ height (m)
5:48PM
2.32
6:24AM
2.21
6:48PM
2.24
7:23AM
2.19
7:46PM
2.21
8:17AM
2.22
8:39PM
2.23
9:05AM
2.28
9:27PM
2.28
9:49AM
2.35
10:11PM
2.35
10:30AM
2.42
10:52PM
2.41
Low Tide
/ height (m)
11:32AM
0.65
12:07AM
0.61
12:32PM
0.71
1:05AM
0.67
1:31PM
0.73
1:59AM
0.68
2:26PM
0.72
2:50AM
0.67
3:16PM
0.67
3:36AM
0.63
4:01PM
0.60
4:20AM
0.59
4:43PM
0.53
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Sunrise5:50--5:50--5:52--5:52--5:52--5:52--5:52--
Sunset-9:04--9:05--9:06--9:07--9:07--9:07--9:08-
clear
clear
clear
clear
clear
clear
part cloud
part cloud
rain showers
rain showers
part cloud
heavy rain
heavy rain
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
Rain (mm)
--------11-343011222222
Temp. °C151513161614171716191917141513151612151514
Feels °C (?)121212131413151515151512121311131210131313
  • 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 Nine Mile Surf forecast

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

Nine Mile is 177 km (110 miles) from the city of Christchurch. If you plan a holiday in West Coast South Island, look for hotels and other accommodation in Christchurch. Christchurch has rooms for a wide range of budgets as well as car hire and transport links.

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