Larsen Street surfForecast / West Coast South Island / New Zealand

information circle12 Day Weather and Surf, issued 6 pm Thursday 15 Jan 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
18.0° 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 Thursday (Jan 15) at 10PM. The primary swell is predicted to be 0.8m and 14s period with a secondary swell of 0.9m and 7s. 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 0.9m 18s and forecast to arrive on Friday (Jan 23) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 7s period and expected on Friday (Jan 16) at 7AM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+)10PM (Thu 15th Jan)2.5ft (0.8m) 14s
Best Surf 1AM (Fri 23rd Jan)3ft (0.9m) 18s
Most Powerful 1AM (Fri 23rd Jan)3ft (0.9m) 18s

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 16mm), heaviest on Fri morning. Very mild (max 19°C on Thu afternoon, min 13°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 39mm), heaviest during Wed morning. Very mild (max 17°C on Sun afternoon, min 12°C on Sun night). Wind will be generally light.

Thu
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
2
2
2
1
2
2
0
1
1
0
1
1
0
1
1
0
1
1
1
0
1
Swell
Height Map
Wave Height (m) & direction (?)
0.8
WSW
1.1
WSW
1.1
WSW
1.1
WSW
1
WSW
1.1
WSW
1.1
W
0.9
WSW
0.8
WSW
0.7
WSW
0.7
WSW
0.6
WSW
0.6
WSW
0.7
WSW
0.7
WSW
0.5
WSW
0.8
WSW
0.8
WSW
0.8
WSW
0.6
WSW
0.5
W
Period(s) (?)141413131211111111111111111111141313121221
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2394594403902972852971731351051138281107109107195183167109227
Wind
(km/h)
5
SSW
5
SE
5
E
10
WSW
5
S
5
ENE
15
NNW
5
SSW
5
ENE
20
WSW
5
E
5
ESE
15
WSW
5
ESE
10
E
20
NE
15
E
15
ENE
15
ENE
25
E
20
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
glassglasscrosscross-
off
glasscross-
on
cross-
off
cross-
off
cross-
on
cross-
off
glasscrosscross-
off
cross-
off
crosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
9:36PM
2.31
9:59AM
2.41
10:23PM
2.42
10:43AM
2.53
11:05PM
2.53
11:23AM
2.65
11:44PM
2.63
12:01PM
2.75
12:21AM
2.70
12:37PM
2.82
12:57AM
2.74
1:13PM
2.87
1:34AM
2.75
Low Tide
/ height (m)
3:46AM
0.74
4:13PM
0.67
4:32AM
0.63
4:56PM
0.54
5:13AM
0.51
5:36PM
0.42
5:51AM
0.40
6:14PM
0.32
6:27AM
0.32
6:51PM
0.24
7:04AM
0.27
7:28PM
0.19
7:41AM
0.25
Thu
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Sunrise--6:16--6:18--6:18--6:20--6:22--6:22--6:24
Sunset9:08--9:07--9:07--9:07--9:07--9:06--9:05--
part cloud
light rain
rain showers
part cloud
clear
rain showers
rain showers
rain showers
clear
part cloud
part cloud
clear
part cloud
part cloud
cloud
cloud
heavy rain
heavy rain
heavy rain
heavy rain
heavy rain
Rain (mm)
-43--342--------11283511013
Temp. °C191816171617171717171715161617161515161718
Feels °C (?)191815161415161614131612131514121413151619
  • 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 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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