Surf Forecasts:
Is Arenas surf forecast from 10 Sep 2026:
- Best quality surf: Friday 11 Sep, 8AM (local time) - 4.5ft (1.3m), 8s period, NW swell with cross-offshore winds.
- Most powerful swell: Thursday 17 Sep, 5PM (local time) - 8ft (2.5m), 9s period, NW swell with 1,176 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 8AM (local time) - 4.5ft (1.3m), 8s period with NW swell.
Best Forecast Surf Conditions for Is Arenas this week:
The surf forecast for Is Arenas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 11) at 8AM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.1m and 6s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Is Arenas in the next 16 days are 2.5m 9s and forecast to arrive on Thursday (Sep 17) at 5PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 7s period and expected on Thursday (Sep 10) at 8PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Fri 11th Sep) | 4.5ft (1.3m) 8s |
| Best Surf | 8AM (Fri 11th Sep) | 4.5ft (1.3m) 8s |
| Most Powerful | 5PM (Thu 17th Sep) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Is Arenas over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s look at what’s on offer for the next couple of weeks.
Well, I gotta be straight with you – it’s a pretty grim stretch overall for Is Arenas. The first real chance to get wet doesn’t show up until Friday the 11th, and even then it’s a one-morning window. The water is sitting at a very unusual 82°, which is a massive 7° warmer than normal for this time of year, so you’ll be surfing in bathwater.
The standout is Friday morning, September 11th. You’ll get a clean 4ft NW swell with a period of 8 seconds, and the combined energy is a moderate 201. The wind is a light easterly at 3 mph, blowing cross-offshore, which will keep the surface glassy. It’s a small but clean option for the intermediate crew. Just be aware that this spot is inconsistent, and it can get crowded sometimes.
After that, everything drops right off. The swell fades away to nothing, with energy readings in the low single digits for days on end. We’re looking at flat, tiny, or blown-out conditions from Saturday the 12th all the way through to Wednesday the 23rd.
There is a slight flicker of hope on Thursday morning, September 24th. A 3ft NW swell with a 6-second period and a light 3 mph offshore wind from the SE. The guidance says it’s surfable but very ordinary. The energy is weak at 43, so don’t expect much push.
The following Friday, the 25th, sees a little more size but the wind is straight onshore from the NNW, ruining any chance of quality.
So, honestly, if you’re desperate, Friday the 11th is your only call. The rest of the 16-day window is a write-off. It’s the kind of pattern that makes you grateful for even a single clean morning.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu afternoon. Warm (max 26°C on Sat afternoon, min 20°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Tue morning, min 21°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
PM | 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) | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | NW 6 | NW 6 | WNW 6 | WNW 5 | NW 5 | NW 4 | NW 4 | WNW 4 | WNW 6 | WNW 5 | WNW 5 | NW 4 | NW 4 | — | NW 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 413 | 322 | 200 | 151 | 75 | 54 | 26 | 44 | 19 | 9 | 8 | 2 | 1 | 6 | 10 | 10 | 3 | 1 | 0 | 304 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-off | on | cross | cross | cross-on | cross-off | cross-off | cross-on | cross | cross-off | cross-on | cross-off | cross-off | cross-on | glassy | glassy | cross-on | on |
High Tide | 9:40PM0.30m | 9:43AM0.21m | 10:13PM0.29m | 10:22AM0.22m | 10:43PM0.28m | 10:59AM0.22m | 11:11PM0.25m | 11:37AM0.23m | 11:39PM0.23m | 12:16PM0.22m | 00:05AM0.21m | 12:58PM0.21m | 00:30AM0.18m | |||||||
Low Tide | 2:59PM0.01m | 4:05AM0.04m | 3:39PM0.01m | 4:35AM0.04m | 4:18PM0.02m | 5:03AM0.03m | 4:56PM0.04m | 5:30AM0.04m | 5:34PM0.06m | 5:57AM0.04m | 6:14PM0.08m | 6:24AM0.05m | 6:58PM0.10m | |||||||
 |  |  | | | | | | | | | | | | | | | | |  | |
 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — |
 | 7:44 | — | — | 7:42 | — | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — | — | 7:35 | — | — | 7:34 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 22 | 25 | 25 | 24 | 25 | 26 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 26 | 26 | 24 | 25 | 25 | 24 |
Feels °C | 21 | 20 | 24 | 23 | 22 | 24 | 25 | 24 | 25 | 23 | 25 | 26 | 25 | 25 | 27 | 25 | 25 | 26 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | — | NW 8 | NW 8 | W 7 | NW 7 | NW 6 | NW 6 | WNW 6 | WNW 5 | NW 5 | — | NW 4 | NW 5 | WNW 6 | WNW 5 | WNW 5 | NW 4 | NW 4 | — | NW 8 |
| kJ | — | 322 | 200 | 1 | 75 | 54 | 26 | 44 | 19 | 9 | — | 2 | 1 | 6 | 10 | 10 | 3 | 1 | — | 304 |
Swell 2 Height (m) Direction Period (s) | — | WSW 6 | W 6 | — | SW 7 | W 7 | W 6 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 3 | 1 | — | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | WSW 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 8 | — | — | NW 7 | — | — | — | — | — | NW 5 | NW 4 | — | WNW 4 | — | — | — | — | — | — | — |
| kJ | 413 | — | — | 151 | — | — | — | — | — | 6 | 8 | — | 1 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 380 | 2 | 2 | 9 | 2 | 4 | 1081 | 4 | 912 | 998 | 912 | 912 | 913 | 912 | 557 | 1511 | 925 | 925 | 1056 | 400 |
Best forecast wave conditions in Sardinia | ||||||||||||||||||||
Best forecast wave conditions in Italy | ||||||||||||||||||||
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Information about the Is Arenas Surf forecast
The above surf forecast table for Is Arenas provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Is Arenas can be found by selecting the local surf guide option on the grey menu. Our Is Arenas 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 (Is Arenas) 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 Is Arenas 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 Sardinia? If you are looking for accommodation near Is Arenas, camping, hotels and holiday cottages in Sardinia, consider staying in Oristano which is 21 km (13 miles) away. Other places in and around Sardinia where you can find information about places to rent, and car hire include Alghero which is 56 km (35 miles) away, Sassari, Nuoro and Iglesias.
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