Larsen Street surfForecast / West Coast South Island / New Zealand

information circle12 Day Weather and Surf, issued 12 pm Wednesday 11 Mar 2026 NZDT
Forecast update in hr  min  s Forecast update imminent
Larsen Street surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Larsen Street sea temperature is
17.1° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Larsen Street this week:

The surf forecast for Larsen Street over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Mar 11) at 10PM. The primary swell is predicted to be 0.8m and 12s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Larsen Street in the next 12 days are 3.0m 10s and forecast to arrive on Saturday (Mar 14) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 7s period and expected on Friday (Mar 13) at 7AM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+)10PM (Wed 11th Mar)2.5ft (0.8m) 12s
Best Surf 1AM (Sun 15th Mar)8ft (2.5m) 10s
Most Powerful 7PM (Sat 14th Mar)10ft (3.0m) 10s

Table - best surf conditions forecast for Larsen Street over the next 12 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 69mm), heaviest during Fri morning. Very mild (max 18°C on Fri morning, min 14°C on Wed morning). Mainly fresh winds.

Days 3-6 Weather Summary Some drizzle, heaviest during Mon night. Very mild (max 16°C on Sat morning, min 13°C on Sat night). Winds decreasing (fresh winds from the SW on Sat afternoon, calm by Sun morning).

Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
0
1
0
0
0
0
1
0
1
1
4
4
1
2
1
0
3
1
1
1
Swell
Height Map
Wave Height (m) & direction (?)
0.9
WSW
0.9
WSW
0.8
WSW
0.6
WSW
0.6
WSW
0.7
NNW
0.8
NNW
0.6
W
1
W
1.4
W
2.5
WSW
2.5
W
2.3
W
2.4
WSW
2
WSW
1.8
WSW
1.7
WSW
1.5
WSW
1.1
WSW
1.8
W
1
WSW
Period(s) (?)1212121112121013117101010121213141616814
Wave
Graph
(?)Metric surfscale
Energy kJ (?)276199153951111381251172472031396135798514911178114410341123546432373
Wind
(km/h)
10
ENE
10
W
5
SE
10
N
15
N
15
ENE
20
NNE
0
WNW
30
SSW
20
SSW
30
SW
15
S
5
SW
30
SW
20
SSW
20
SW
25
SW
5
SSE
20
ENE
20
SW
10
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
on
glasscross-
on
cross-
on
cross-
off
crossglasscross-
off
cross-
off
crosscross-
off
glasscrosscross-
off
crosscrosscross-
off
cross-
off
crosscross
High Tide
/ height (m)
4:50PM
2.12
5:24AM
2.10
6:05PM
2.03
6:46AM
2.07
7:29PM
2.06
8:02AM
2.16
8:37PM
2.18
9:00AM
2.32
9:28PM
2.36
9:46AM
2.52
10:11PM
2.55
10:26AM
2.73
10:50PM
2.73
Low Tide
/ height (m)
10:40AM
0.90
11:08PM
0.98
11:48AM
1.01
12:23AM
1.04
1:09PM
1.00
1:42AM
0.99
2:20PM
0.89
2:44AM
0.84
3:15PM
0.69
3:34AM
0.65
4:00PM
0.48
4:16AM
0.45
4:40PM
0.26
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Sunrise7:24--7:26--7:26--7:28--7:28--7:30--7:31--
Sunset-8:01--8:00--7:59--7:57--7:54--7:53--7:52-
clear
clear
part cloud
clear
clear
rain showers
heavy rain
heavy rain
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
rain showers
light rain
rain showers
rain showers
Rain (mm)
-----114612---------1542
Temp. °C151615161717181816161615161616161615151716
Feels °C (?)131515141514172011121111121012131112121514
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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Information about the Larsen Street Surf forecast

The above surf forecast table for Larsen Street provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Larsen Street can be found by selecting the local surf guide option on the grey menu. Our Larsen Street 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 (Larsen Street) 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 Larsen Street 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 West Coast South Island? If you are looking for accommodation near Larsen Street, camping, hotels and holiday cottages in West Coast South Island, consider staying in Nelson which is 157 km (98 miles) away.

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