Nine Mile surf break

Nine Mile surfForecast / West Coast South Island / New Zealand

information circle12 Day Weather and Surf, issued 6 pm Tuesday 30 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
16.7° C
(Which is 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 Wednesday (Dec 31) at 1AM. The primary swell is predicted to be 0.4m and 18s period with a secondary swell of 0.4m and 11s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Nine Mile in the next 12 days are 1.8m 11s and forecast to arrive on Wednesday (Dec 31) at 10PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 9s period and expected on Thursday (Jan 01) at 10AM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Wed 31st Dec)1.5ft (0.4m) 18s
Best Surf 1PM (Wed 31st Dec)3.5ft (1.0m) 11s
Most Powerful10PM (Wed 31st Dec)6ft (1.8m) 11s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 20mm), heaviest during Thu morning. Warm (max 22°C on Wed afternoon, min 12°C on Tue night). Winds decreasing (fresh winds from the ESE on Tue afternoon, calm by Wed afternoon).

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Sat morning. Very mild (max 18°C on Sat afternoon, min 13°C on Sat night). Wind will be generally light.

Tue
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
Monday
05
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
1
2
3
3
0
0
1
1
0
2
2
1
2
2
0
2
2
1
2
1
Swell
Height Map
Wave Height (m) & direction (?)
0.6
WSW
0.4
WSW
0.9
NNW
1.4
NNW
1.8
NNW
0.5
W
1.1
W
0.4
WSW
0.5
W
0.7
WSW
1
W
1
W
1.2
W
0.9
W
0.9
WSW
0.8
WSW
0.6
WSW
0.5
WSW
0.5
WSW
0.7
WSW
0.5
WSW
Period(s) (?)91811111013611141310109911111514141313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)611031864396538490409416520818323511919115317611610817696
Wind
(km/h)
30
SE
20
E
10
ENE
5
ENE
5
NE
15
SW
15
WSW
5
WNW
5
W
15
SW
5
S
5
NNE
10
W
5
E
5
NNE
15
NW
5
E
5
WSW
10
W
5
ESE
5
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
offcross-
off
offcross-
off
cross-
on
onglassglasscross-
on
cross-
off
glassonoffglasscross-
on
offglassonglassglass
High Tide
/ height (m)
7:53PM
2.47
8:27AM
2.49
9:00PM
2.56
9:29AM
2.62
10:01PM
2.67
10:26AM
2.76
10:58PM
2.77
11:20AM
2.88
11:51PM
2.83
12:11PM
2.95
12:41AM
2.84
1:00PM
2.97
1:28AM
2.80
Low Tide
/ height (m)
2:10AM
0.45
2:41PM
0.40
3:13AM
0.38
3:44PM
0.27
4:12AM
0.28
4:42PM
0.13
5:07AM
0.19
5:37PM
0.03
5:59AM
0.13
6:28PM
-0.03
6:48AM
0.10
7:17PM
-0.02
7:35AM
0.12
Tue
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
Monday
05
Sunrise--6:00--6:01--6:01--6:01--6:03--6:03--6:05
Sunset9:14--9:14--9:14--9:14--9:14--9:14--9:14--
rain showers
rain showers
rain showers
part cloud
light rain
mod rain
light rain
rain showers
part cloud
part cloud
part cloud
rain showers
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
Rain (mm)
112-4732---11--------
Temp. °C171417221816161517171517181617171517171517
Feels °C (?)10815211815151615141417171715151517161515
  • 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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