Europe’s Wet, Winter Wave Wrap Up
Precipitation in Portugal, rain in Spain, barrels in Britain and some magical moments in Mully, the Med, Morocco and Mundaka.
- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Rock Island surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 8 pm Tuesday 24 Feb 2026 JSTForecast update in hr min s Forecast update imminent
Rock Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Rock Island sea temperature is
16.4° C
(Which is normal for this time of year)How big are the waves at Rock Island today?
The current surf forecast for Rock Island at 3AM is: 0.4m 4s primary swell from a South-southwest direction and 0.2m 5s secondary swell from a South direction, 0.1m 10s secondary swell from a Southeast direction (forecast issued at 08:00pm February 24). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Feb) | 5ft (1.5m) | 6s |
| Afternoon (25 Feb) | 4ft (1.2m) | 7s |
| Evening (25 Feb) | 3.5ft (1.1m) | 8s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tue 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||||||||
| 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 5 | 5 | 5 | 4 | 5 | 6 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 5 | 5 | 2 | 5 | 48 | 167 | 110 | 164 | 178 | 161 | 137 | 92 | 72 | 54 | 38 | 54 | 38 | 38 | 40 | 41 | 29 | 38 | 52 | 37 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | on | cross- on | cross- off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross- off | off | off | off | off |
High Tide / height (m) | 11:06PM 1.02 | 9:16AM 1.27 | 1:21AM 1.01 | 10:02AM 1.23 | 3:21AM 1.09 | 11:18AM 1.18 | ||||||||||||||||||
Low Tide / height (m) | 4:01PM 0.27 | 3:18AM 0.87 | 5:11PM 0.27 | 4:05AM 0.98 | 6:33PM 0.25 | 6:22AM 1.05 | ||||||||||||||||||
Tue 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:16 | - | - | - | - | - | - | - | 6:16 | - | - | - | - | - | - | - | 6:15 | - | - |
| Sunset | - | - | - | - | - | - | - | 5:31 | - | - | - | - | - | - | - | 5:32 | - | - | - | - | - | - | - | 5:34 |
 |  | | |  |  | |  | | | | | |  | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | 3 | 17 | 23 | 4 | 5 | 3 | 2 | 1 | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 14 | 14 | 15 | 12 | 10 | 10 | 9 | 8 | 7 | 6 | 5 | 6 | 6 | 7 | 9 | 10 | 10 | 10 | 11 | 12 | 12 | 13 | 14 |
| Feels °C (?) | 10 | 12 | 11 | 13 | 11 | 5 | 4 | 0 | -1 | -3 | -4 | -6 | -4 | -5 | -4 | -2 | 0 | 1 | 2 | 4 | 5 | 6 | 8 | 12 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
Save Up to 20% on SIXT Rental Cars Worldwide – Exclusive Surf-Forecast Deal
Surf road trips just got even better. Surf-Forecast users can now save up to 20% on SIXT rental cars worldwide during the promotional period until March 31, 2026. Whether you’re planning a legendary California road trip, chasing waves along Europe’s coasts, or exploring remote surf destinations, this exclusive SIXT offer helps you travel smarter and cheaper. And if you want some inspiration on where to go, check out our article Five Iconic Surf Road Trips. Click and get your SIXT discount
Using Surf-Forecast’s Historical Surf Data To Find The Cleanest Waves On Earth
Our historical stats breakdown what waves are offshore almost all the time.
The World’s Most Inconsistent Waves
Huntington, Dribbleton, Virginia, Holland and the Superbank! We recently had a look at the world’s most consistent waves. This was based on the combination of swells and wind directed at 7,000 surf spots, as compiled from our data since 2006. Those stats, represented in easy-to-read graphics, are located under each wave’s spot guides, with historical swell and wind breakdowns available by month, season, and year. There is also an offshore filter, which shows how often the swells come with clean
Read more
Discover more articles and updates in the Greenroom.
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 Rock Island 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.
Nearest