Portinfer surfForecast / Guernsey / UK

information circle12 Day Weather and Surf, issued 11 pm Wednesday 17 Dec 2025 GMT
Forecast update in hr  min  s Forecast update imminent
Portinfer surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Portinfer sea temperature is
13.2° C
(Which is 1.8°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Portinfer this week:

The surf forecast for Portinfer 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 4.5m and 19s period with a secondary swell of 3.0m and 19s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Portinfer in the next 12 days are 4.5m 19s and forecast to arrive on Thursday (Dec 18) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 7s period and expected on Thursday (Dec 18) at 12PM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Thu 18th Dec)15ft (4.5m) 19s
Best Surf 3PM (Thu 18th Dec)15ft (4.5m) 19s
Most Powerful 3PM (Thu 18th Dec)15ft (4.5m) 19s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 27mm), heaviest during Thu morning. Very mild (max 14°C on Thu afternoon, min 9°C on Sat morning). Winds decreasing (severe gales from the SSW on Thu afternoon, moderate winds from the WSW by Fri afternoon).

Days 3-6 Weather Summary Moderate rain (total 16mm), heaviest on Sat night. Very mild (max 11°C on Sun afternoon, min 8°C on Mon afternoon). Winds decreasing (strong winds from the WSW on Sun night, light winds from the ENE by Mon night).

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wed
24
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
!
0
0
0
2
1
0
3
2
3
2
4
3
2
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
3.5
WSW
3.5
W
4.5
WSW
3.5
W
3
W
3
W
2.5
W
1.9
W
2.1
W
2.2
W
2.5
W
3
W
2.3
W
1.9
W
1.5
W
1.1
W
0.9
W
0.8
W
0.7
W
0.5
W
0.5
W
Period(s) (?)11201918171615141312161616151312111110912
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2622101021552068485244482631441407146514623436415626091513796347189146944375
Wind
(km/h)
50
SSW
50
S
75
SSW
35
WNW
30
W
30
WSW
35
SSW
45
S
45
SSE
35
SSE
35
SE
40
SSE
30
SSW
25
SE
15
ESE
10
ENE
20
N
25
NNE
30
NE
25
ENE
30
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
oncross-
on
cross-
on
cross-
off
cross-
off
cross-
off
offoffoffcross-
off
offoffcross-
off
cross-
on
cross-
on
crosscross-
off
cross-
off
High Tide
/ height (m)
5:14AM
6.78
5:35PM
6.75
5:52AM
7.04
6:13PM
6.98
6:28AM
7.26
6:49PM
7.13
7:04AM
7.41
7:24PM
7.22
7:39AM
7.50
7:59PM
7.23
8:14AM
7.51
8:35PM
7.18
8:50AM
7.44
Low Tide
/ height (m)
11:08PM
1.89
11:32AM
1.70
11:48PM
1.66
12:11PM
1.44
12:25AM
1.46
12:47PM
1.24
1:01AM
1.33
1:23PM
1.12
1:36AM
1.26
1:58PM
1.07
2:10AM
1.26
2:34PM
1.09
2:45AM
1.33
3:10PM
1.16
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wed
24
Sunrise-8:00--8:02--8:02--8:03--8:03--8:03--8:03-
Sunset--4:10--4:10--4:12--4:12--4:13--4:13--4:14
mod rain
heavy rain
light rain
light rain
clear
clear
clear
part cloud
light rain
mod rain
light rain
rain showers
light rain
light rain
clear
part cloud
cloud
cloud
light rain
light rain
light rain
Rain (mm)
61541----185111----354
Temp. °C1213141211121110101010119999991099
Feels °C (?)20-1435400222-135643243
  • 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 Portinfer Surf forecast

The above surf forecast table for Portinfer provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Portinfer can be found by selecting the local surf guide option on the grey menu. Our Portinfer 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 (Portinfer) 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 Portinfer 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 Guernsey? If you are looking for accommodation near Portinfer, camping, hotels and holiday cottages in Guernsey, consider staying in Saint Peter Port which is 6 km (4 miles) away. Other places in and around Guernsey where you can find information about places to rent, and car hire include Guernsey which is 7 km (4 miles) away, Saint Helier, Octeville and Equeurdreville-Hainneville.

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