Larsen Street surfForecast / West Coast South Island / New Zealand

information circle16 Day Weather and Surf, issued 11 am Sunday 12 Apr 2026 NZST
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
17.4° C
(Which is 1.3°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Larsen Street this week:

The surf forecast for Larsen Street over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Apr 13) at 12AM. The primary swell is predicted to be 1.6m and 11s period with a secondary swell of 0.2m and 12s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Larsen Street in the next 16 days are 3.0m 14s and forecast to arrive on Tuesday (Apr 14) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 7s period and expected on Saturday (Apr 18) at 3AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Mon 13th Apr)5ft (1.6m) 11s
Best Surf 9PM (Tue 14th Apr)8ft (2.5m) 12s
Most Powerful 3AM (Tue 14th Apr)10ft (3.0m) 14s

Table - best surf conditions forecast for Larsen Street over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 48mm), heaviest during Tue night. Very mild (max 16°C on Sun afternoon, min 11°C on Tue night). Winds increasing (calm on Sun morning, fresh winds from the WNW by Mon night).

Days 3-6 Weather Summary Heavy rain (total 46mm), heaviest during Fri night. Very mild (max 16°C on Fri morning, min 12°C on Wed morning). Winds decreasing (fresh winds from the SW on Wed night, light winds from the NE by Fri night).

Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
1
2
2
2
0
3
1
3
3
3
1
1
1
2
0
0
0
3
4
4
Swell
Height Map
Wave Height (m) & direction (?)
0.7
WSW
1.2
W
1.6
W
1.7
W
1.8
W
3
W
1.9
WSW
2.5
W
3
W
3
W
2.5
W
2.5
W
3
W
3
W
2.5
W
2.5
W
2
WSW
2.2
W
2.5
W
2.5
W
2.4
W
Period(s) (?)12111111121413121211111091011141410131413
Wave
Graph
(?)Metric surfscale
Energy kJ (?)152367618651948372412491933215119161637131914331524153226771569932228828631982
Wind
(km/h)
10
SSE
25
SSW
5
S
10
W
20
NNE
30
WNW
5
WSW
20
NW
10
NE
15
SSW
10
WSW
25
SW
30
SW
30
WSW
15
WSW
20
NNW
30
NNW
20
NW
10
NE
15
SE
10
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
cross-
off
cross-
on
crosscross-
on
crossoncrosscross-
off
crosscrosscrosscrosscrosscross-
on
cross-
on
oncrossoffoff
High Tide
/ height (m)
Low Tide
/ height (m)
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunrise7:01--7:01--7:03--7:03--7:05--7:05--7:07--
Sunset-6:07--6:06--6:04--6:02--6:00--6:00--5:58-
mod rain
part cloud
rain showers
cloud
light rain
rain showers
rain showers
mod rain
rain showers
part cloud
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
mod rain
heavy rain
mod rain
rain showers
light rain
Rain (mm)
9-1-513389-15236381810191
Temp. °C141616161615151412141415141415161616131313
Feels °C (?)141313141210111010111210771312111311119
  • 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 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 16 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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