Larsen Street surfForecast / West Coast South Island / New Zealand

information circle12 Day Weather and Surf, issued 6 am Tuesday 21 Oct 2025 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
14.2° C
(Which is slightly warmer than usual)


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 Tuesday (Oct 21) at 10AM. The primary swell is predicted to be 4.5m and 12s period with a secondary swell of 0.2m and 15s. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Larsen Street in the next 12 days are 4.0m 16s and forecast to arrive on Wednesday (Oct 22) at 7AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 12s period and expected on Sunday (Oct 26) at 4PM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+)10AM (Tue 21st Oct)15ft (4.5m) 12s
Best Surf10AM (Tue 21st Oct)15ft (4.5m) 12s
Most Powerful 7AM (Wed 22nd Oct)13ft (4.0m) 16s

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 31mm), heaviest during Tue morning. Very mild (max 16°C on Thu morning, min 11°C on Tue night). Winds increasing (calm on Wed afternoon, near gales from the NW by Thu morning).

Days 3-6 Weather Summary Heavy rain (total 32mm), heaviest during Sun night. Very mild (max 14°C on Sun night, min 10°C on Sat night). Winds increasing (light winds from the WSW on Sun morning, strong winds from the N by Sun night).

Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
!
0
3
0
3
2
0
0
0
2
2
2
0
0
1
2
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
4.5
WNW
4
W
4
W
4
W
3.5
W
3
W
2.1
W
4.5
WNW
4
W
4
W
3.5
W
2.2
W
1.8
WSW
1.9
W
1.8
W
1.8
WSW
2
W
2
W
3.5
NW
4
NW
3.5
NW
Period(s) (?)12161516151414101313121211111012131381010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)51807335712772075207350418323404521152343441138883686268292813161329159934312308
Wind
(km/h)
35
WSW
30
W
25
SW
25
WSW
15
W
25
NE
35
NNE
40
W
35
WSW
25
SW
25
SW
20
WSW
15
WSW
15
W
20
SW
10
WSW
20
WNW
30
N
50
NNE
40
WSW
30
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on
crosscross-
on
cross-
on
crosscross-
on
cross-
on
cross-
on
crosscrosscrosscross-
on
cross-
on
crosscross-
on
oncross-
on
cross-
on
cross-
on
cross-
on
High Tide
/ height (m)
11:14AM
2.76
11:28PM
2.78
11:46AM
2.78
12:02AM
2.77
12:19PM
2.77
12:35AM
2.72
12:52PM
2.71
1:10AM
2.64
1:27PM
2.62
1:46AM
2.52
2:04PM
2.51
2:26AM
2.40
2:46PM
2.38
3:12AM
2.27
Low Tide
/ height (m)
5:22PM
0.29
5:39AM
0.25
5:56PM
0.28
6:12AM
0.29
6:30PM
0.32
6:45AM
0.36
7:04PM
0.40
7:20AM
0.46
7:40PM
0.50
7:57AM
0.59
8:20PM
0.63
8:37AM
0.71
9:04PM
0.74
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
Sunrise6:35--6:35--6:33--6:31--6:30--6:28--6:26--
Sunset-8:00--8:01--8:02--8:05--8:06--8:07--8:07-
rain showers
rain showers
part cloud
cloud
rain showers
light rain
mod rain
rain showers
rain showers
part cloud
part cloud
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
heavy rain
rain showers
rain showers
Rain (mm)
112--14643--343334122246
Temp. °C151412131314161513121212121311131314161514
Feels °C (?)10858108887567896998897
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for West Coast South Island

  1. weather stationWind Update Wind reports 8 km away suggest it is still onshore at Larsen Street (strong winds from the WNW at WestportAeroAws). A 4.8m groundswell from the WNW is too big for here

    Larsen Street
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1 h 33 min ago

39 km/h
WNW
Onshore
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Larsen Street surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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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