Surf Forecasts:
Grotta surf forecast from 14 Oct 2026:
- Best quality surf: Tuesday 20 Oct, 9PM (local time) - 10ft (3.0m), 12s period, WSW swell with cross-offshore winds.
- Most powerful swell: Sunday 18 Oct, 12PM (local time) - 13ft (4.0m), 18s period, WSW swell with 11,214 kJ wave energy.
- Next surfable swell (1★+): Thursday 15 Oct, 12PM (local time) - 2ft (0.6m), 13s period with SW swell.
Best Forecast Surf Conditions for Grotta this week:
The surf forecast for Grotta over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Oct 15) at 12PM. The primary swell is predicted to be 0.6m and 13s period with a secondary swell of 0.8m and 6s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Grotta in the next 16 days are 4.0m 18s and forecast to arrive on Sunday (Oct 18) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Saturday (Oct 17) at 6PM.
| Wave Type | Time (GMT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Thu 15th Oct) | 2ft (0.6m) 13s |
| Best Surf | 9PM (Tue 20th Oct) | 10ft (3.0m) 12s |
| Most Powerful | 12PM (Sun 18th Oct) | 13ft (4.0m) 18s |
Table - best surf conditions forecast for Grotta over the next 16 days.
Short Range ForecastHeavy rain (total 25mm), heaviest during Wed morning. Icy conditions (max 8°C on Wed morning, min 0°C on Wed night). Winds decreasing (near gales from the NW on Wed night, light winds from the NNE by Thu morning). | Days 5-7 Weather SummaryHeavy rain (total 21mm), heaviest during Sat night. Very mild (max 10°C on Sat night, min 7°C on Sun night). Winds increasing (light winds from the S on Fri night, gales from the SE by Sat afternoon). | ||||||||||||||||||
Wednesday 14 | Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | WSW 10 | WSW 12 | WSW 11 | NW 7 | NW 7 | SW 13 | WSW 8 | WSW 8 | WSW 13 | WSW 11 | WSW 10 | WSW 9 | WSW 14 | WSW 14 | WSW 17 | WSW 14 | WSW 12 | WSW 13 | WSW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 178 | 306 | 130 | 605 | 183 | 108 | 359 | 338 | 261 | 631 | 269 | 133 | 1111 | 3302 | 9594 | 3286 | 1302 | 1821 | 2949 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-on | cross-on | cross | cross | cross | cross |
High Tide | 8:02AM3.79m | 8:15PM3.45m | 8:34AM3.57m | 8:48PM3.20m | 9:10AM3.31m | 9:29PM2.93m | 10:00AM3.04m | 10:28PM2.67m | 11:15AM2.81m | 11:53PM2.50m | 12:52PM2.73m | 1:39AM2.52m | |||||||
Low Tide | 1:50AM0.49m | 2:17PM0.65m | 2:19AM0.73m | 2:51PM0.93m | 2:49AM1.00m | 3:31PM1.24m | 3:26AM1.29m | 4:26PM1.52m | 4:21AM1.56m | 5:47PM1.72m | 5:53AM1.76m | 7:34PM1.71m | |||||||
 |  |  |  |  |  | |  | |  | | |  | | | | | | | |
 | — | 8:12 | — | — | 8:15 | — | — | 8:18 | — | — | 8:22 | — | — | 8:25 | — | — | 8:27 | — | — |
 | — | — | 6:13 | — | — | 6:08 | — | — | 6:06 | — | — | 6:02 | — | — | 5:59 | — | — | 5:55 | — |
mm | 3 | 16 | 1 | 1 | — | 2 | 2 | — | — | — | — | 1 | 10 | 2 | — | 8 | — | — | 6 |
Temp °C | 7 | 8 | 6 | 4 | 2 | 7 | 8 | 8 | 8 | 8 | 8 | 9 | 10 | 9 | 8 | 9 | 9 | 9 | 9 |
Feels °C | 3 | 1 | -1 | -7 | -2 | 0 | 0 | 2 | 2 | 3 | -1 | -5 | -3 | -1 | -1 | 4 | 2 | 3 | 3 |
Swell 1 Height (m) Direction Period (s) | WSW 10 | WSW 12 | WSW 11 | SW 15 | SW 14 | SW 13 | WSW 8 | WSW 8 | WSW 8 | WSW 11 | WSW 10 | WSW 9 | WSW 14 | WSW 19 | — | WSW 14 | WSW 12 | WSW 13 | WSW 14 |
| kJ | 178 | 306 | 130 | 186 | 114 | 108 | 359 | 338 | 216 | 631 | 269 | 133 | 1111 | 1261 | — | 3286 | 1302 | 1821 | 2949 |
Swell 2 Height (m) Direction Period (s) | WSW 14 | — | NW 4 | WSW 10 | WSW 9 | WNW 6 | SW 13 | SW 12 | WSW 13 | — | — | — | — | — | — | — | — | — | — |
| kJ | 82 | — | 1 | 9 | 8 | 26 | 128 | 90 | 261 | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | WSW 9 | — | WSW 13 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 15 | — | 60 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | NE 4 | NNE 3 | NW 7 | NW 7 | — | — | — | — | — | S 3 | SSE 4 | S 4 | WSW 14 | WSW 17 | — | — | — | — |
| kJ | — | 64 | 4 | 605 | 183 | — | — | — | — | — | 5 | 47 | 30 | 3302 | 9594 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 1437 | 1645 | 1186 | 1286 | 12 | 1286 | 1041 | 1038 | 12 | 1106 | 307 | 1038 | 1094 | 1123 | 1123 | 1044 | 1041 | 1036 |
Best forecast wave conditions in Reykjanes Peninsula | |||||||||||||||||||
Best forecast wave conditions in Iceland | |||||||||||||||||||
Header Global | |||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Grotta 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.
Information about the Grotta Surf forecast
The above surf forecast table for Grotta provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Grotta can be found by selecting the local surf guide option on the grey menu. Our Grotta 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 (Grotta) 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 Grotta 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.
Grotta is 3 km (2 miles) from Reykjavik. If you plan a holiday in Reykjanes Peninsula, look for hotels and other accommodation in Reykjavik. Reykjavik has rooms for a wide range of budgets as well as car hire and transport links.
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