Marazion surf break

Marazion surfForecast / Cornwall (South) / UK

information circle12 Day Weather and Surf, issued 11 am Thursday 18 Dec 2025 GMT
Forecast update in hr  min  s Forecast update imminent
Marazion surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Marazion sea temperature is
12.1° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Marazion this week:

The surf forecast for Marazion over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Dec 18) at 3PM. The primary swell is predicted to be 6.0m and 19s period with a secondary swell of 0.5m and 11s. Another secondary swell of 1.7m and 8s is also forecast. The wind is predicted to be onshore as the swell arrives.

The most powerful waves expected at Marazion in the next 12 days are 6.0m 19s and forecast to arrive on Thursday (Dec 18) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Thursday (Dec 25) at 6AM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Thu 18th Dec)20ft (6.0m) 19s
Best Surf 3PM (Thu 18th Dec)20ft (6.0m) 19s
Most Powerful 3PM (Thu 18th Dec)20ft (6.0m) 19s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 14mm), heaviest on Thu morning. Very mild (max 12°C on Thu afternoon, min 8°C on Sat night). Winds decreasing (near gales from the S on Sat morning, light winds from the N by Sat night).

Days 3-6 Weather Summary Moderate rain (total 16mm), heaviest on Sun morning. Very mild (max 10°C on Mon morning, min 7°C on Sun morning). Winds decreasing (strong winds from the W on Sun night, moderate winds from the SSW by Mon morning).

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
!
!
!
0
0
0
0
0
!
!
!
0
0
0
0
0
0
1
1
1
0
Swell
Height Map
Wave Height (m) & direction (?)
7
W
6
W
5.5
W
5.5
W
5
W
4
W
4
SSW
3.5
W
3.5
WSW
5
W
4.5
W
3.5
W
3.5
W
2
W
2.2
W
1.7
W
1.3
W
1.9
W
1.8
W
1.6
W
1.5
W
Period(s) (?)20191816161591213161616141312111113121211
Wave
Graph
(?)Metric surfscale
Energy kJ (?)3647326102184281615313220689224803359446011639984364914527137013696943791247930710546
Wind
(km/h)
15
SW
40
SSW
40
W
35
WSW
30
WSW
35
SSW
55
S
20
S
15
WSW
30
NE
30
ENE
40
SW
30
SW
25
S
40
SE
50
ESE
50
E
45
ENE
40
NE
40
NE
40
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
ononcross-
on
cross-
on
oncross-
on
cross-
on
cross-
on
cross-
on
offoffononcross-
on
crosscross-
off
cross-
off
offoffoffoff
High Tide
/ height (m)
3:45PM
4.91
4:04AM
5.10
4:21PM
5.00
4:39AM
5.21
4:56PM
5.05
5:14AM
5.28
5:31PM
5.06
5:49AM
5.30
6:06PM
5.03
6:24AM
5.27
6:42PM
4.97
7:00AM
5.21
7:19PM
4.88
Low Tide
/ height (m)
10:01AM
1.65
10:18PM
1.56
10:39AM
1.55
10:54PM
1.49
11:16AM
1.46
11:30PM
1.44
11:52AM
1.40
12:06AM
1.41
12:29PM
1.37
12:43AM
1.43
1:07PM
1.37
1:20AM
1.48
1:45PM
1.42
1:58AM
1.56
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Sunrise8:15--8:15--8:17--8:18--8:18--8:18--8:18--
Sunset-4:20--4:20--4:21--4:21--4:21--4:22--4:22-
mod rain
light rain
part cloud
clear
clear
part cloud
light rain
light rain
cloud
mod rain
rain showers
rain showers
rain showers
part cloud
light rain
cloud
cloud
cloud
part cloud
part cloud
part cloud
Rain (mm)
81----32-6351-1------
Temp. °C1012101011111199789101010998774
Feels °C (?)632244043010331-2-2-3-2-2-6
  • 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 Marazion Surf forecast

The above surf forecast table for Marazion provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Marazion can be found by selecting the local surf guide option on the grey menu. Our Marazion 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 (Marazion) 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 Marazion 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 South Cornwall? If you are looking for accommodation near Marazion, camping, hotels and holiday cottages in South Cornwall, consider staying in Penzance which is 4 km (2 miles) away. Other places in and around South Cornwall where you can find information about places to rent, and car hire include Camborne which is 16 km (10 miles) away, Penryn, The Lizard and Falmouth.

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