Slite marine weather forecast
Slite (SESLI) is a port in Sweden at 57°43.0′N 18°48.0′E. Today (Sep 17): WSW wind 16–21 kn, waves 1.2–1.5 m, from the ECMWF IFS run 2026-09-17 00z. The live chart on this page shows current conditions and plans weather-optimized departures from this harbor.
Port facts (NGA World Port Index)| Position | 57°43.0′N 18°48.0′E |
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| UN/LOCODE | SESLI |
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| Harbor size | Small |
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| Harbor type | Open roadstead |
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| Shelter | Good |
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| Channel depth | 3 m |
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| Anchorage depth | 5 m |
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| Tide range | 0 m |
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| Pilotage | Compulsory |
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| Time zone | Europe/Stockholm |
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Facilities & services (NGA World Port Index)| Cargo handling | Solid bulk, Liquid bulk, Break bulk |
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| Supplies | Fuel oil, water, provisions |
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| Repairs | Limited |
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| Medical facilities | Available |
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| Largest vessel | 7 m draft |
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10-day marine forecast — Slite
| Date | Wind | Gusts | Waves |
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| WSW 16–21 kn | 27 kn | 1.2–1.5 m |
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| SW 18–20 kn | 28 kn | 1.5–1.7 m |
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| SW 18–25 kn | 33 kn | 1.4–2.2 m |
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| WSW 18–21 kn | 28 kn | 1.4–2.0 m |
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| WNW 15–24 kn | 30 kn | 1.1–1.9 m |
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| N 19–20 kn | 25 kn | 1.4–1.5 m |
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| NNE 16–16 kn | 20 kn | 1.0–1.0 m |
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| N 15–15 kn | 22 kn | 0.8–0.8 m |
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| N 19–19 kn | 29 kn | 1.4–1.4 m |
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| WSW 12–12 kn | 16 kn | 0.5–0.5 m |
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Forecast from the ECMWF IFS model run , waves from ECMWF WAM. Updated with each model cycle; the live chart below recalculates for your departure time and vessel.
What to watch in the forecast
Across the loaded 10-day outlook, the strongest daily modeled wind reaches 25 kn on Sep 19. The highest modeled significant wave height is 2.2 m on Sep 19. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at Slite right now?
As of the ECMWF IFS run 2026-09-17 00z: WSW wind 16–21 kn, waves 1.2–1.5 m. The 10-day outlook is in the forecast table on this page and updates with each model cycle.
How big is the harbor at Slite?
Slite is classed as a small harbor (open roadstead), with good shelter in the NGA World Port Index.
How deep is the approach to Slite?
Per the NGA World Port Index, the entrance channel carries about 3 m and anchorage depths run about 5 m. Verify against current official charts before entry.
What restricts entry to Slite?
Entry is affected by ice, overhead clearance limits. Check the live forecast on this page and official notices before approach.
What is the largest vessel Slite can take?
The NGA World Port Index lists the maximum vessel at about 7 m draft. Confirm current limits with the port authority before arrival.