Larsen Street surfForecast / West Coast South Island / New Zealand

information circle12 Day Weather and Surf, issued 12 am Wednesday 17 Dec 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
17.3° 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 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Dec 18) at 1AM. The primary swell is predicted to be 2.5m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Larsen Street in the next 12 days are 3.5m 16s and forecast to arrive on Wednesday (Dec 17) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Tuesday (Dec 23) at 7PM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Thu 18th Dec)8ft (2.5m) 13s
Best Surf 1AM (Thu 18th Dec)8ft (2.5m) 13s
Most Powerful 4AM (Wed 17th Dec)11ft (3.5m) 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 Moderate rain (total 17mm), heaviest on Fri afternoon. Very mild (max 17°C on Fri afternoon, min 12°C on Tue night). Winds decreasing (fresh winds from the SW on Wed afternoon, calm by Thu morning).

Days 3-6 Weather Summary Moderate rain (total 13mm), heaviest on Mon afternoon. Very mild (max 15°C on Sun afternoon, min 11°C on Sun night). Winds decreasing (strong winds from the SW on Fri night, light winds from the S by Sun night).

Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tue
23
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
4
3
1
4
4
2
1
1
0
0
0
0
0
1
0
2
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
3.5
W
3.5
W
3
W
2.5
W
2
W
1.8
WSW
1.5
W
1.4
WSW
1.2
WSW
2
W
2.1
WSW
2.1
WSW
1.9
WSW
1.7
WSW
1.5
WSW
1.2
WSW
0.7
WSW
0.8
WSW
0.7
WSW
0.6
NW
0.6
NW
Period(s) (?)1615141313121111111288811111110101088
Wave
Graph
(?)Metric surfscale
Energy kJ (?)60164568391722231357960596486331109857461846069849631397111855150
Wind
(km/h)
25
SSW
15
SW
30
SW
10
SSW
5
N
15
SW
15
SW
15
NNE
30
WNW
30
SW
30
SW
35
WSW
25
SW
20
WSW
20
WSW
10
S
10
NNE
20
ENE
35
NW
30
WNW
30
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
crosscrosscross-
off
glasscrosscrosscrossoncrosscrosscrosscrosscrosscrosscross-
off
crosscross-
off
ononcross-
on
High Tide
/ height (m)
9:39AM
2.44
9:59PM
2.44
10:21AM
2.52
10:41PM
2.51
11:00AM
2.60
11:21PM
2.57
11:39AM
2.65
12:00AM
2.61
12:17PM
2.69
12:38AM
2.62
12:55PM
2.70
1:16AM
2.61
1:33PM
2.69
Low Tide
/ height (m)
3:26AM
0.64
3:50PM
0.63
4:09AM
0.59
4:33PM
0.56
4:50AM
0.54
5:13PM
0.49
5:30AM
0.49
5:52PM
0.44
6:08AM
0.45
6:31PM
0.41
6:46AM
0.43
7:09PM
0.40
7:24AM
0.43
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tue
23
Sunrise-5:52--5:54--5:54--5:54--5:54--5:54--5:56-
Sunset--9:05--9:06--9:06--9:07--9:07--9:07--9:08
rain showers
clear
part cloud
part cloud
part cloud
part cloud
part cloud
light rain
mod rain
rain showers
light rain
rain showers
rain showers
part cloud
part cloud
part cloud
clear
light rain
rain showers
light rain
rain showers
Rain (mm)
7------283122----54153
Temp. °C131515141416151617131414131415131413181617
Feels °C (?)811891314121412557791010108141113
  • 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

Latest Updates

submit an eyeball surf report

Quick surf report for Larsen Street:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

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.


false

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.

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest