Go or No Go – The Sea Oracle

⚓ Tide and Go-or-No-Go forecast for Mariehamn, Åland

Live marine weather: wind, swell and tides

EXPERT ANALYSIS
Next tides (coeff. --)
BM04h00
0.24m
BM08h00
0.21m
WindSouthwest 🧭 16kts
Swell1.18m
Period5s
Temp.13°C
Sky
🌤️
Gusts51kts
⚠️ CAUTION. Technical navigation a Cruiser at Mariehamn, åland.
Tides & weather for the next 7 days
19 SatCoeff. --
PM01h00 0.25m
BM04h00 0.24m
BM08h00 0.21m
PM13h00 0.23m
PM22h00 0.32m
BM23h00 0.31m
20 SunCoeff. --
BM03h00 0.29m
BM05h00 0.28m
PM07h00 0.29m
BM10h00 0.26m
PM16h00 0.33m
PM18h00 0.34m
PM21h00 0.36m
21 MonCoeff. --
BM00h00 0.35m
PM03h00 0.37m
BM05h00 0.36m
BM07h00 0.35m
BM09h00 0.34m
BM14h00 0.28m
BM19h00 0.25m
BM21h00 0.24m
22 TueCoeff. --
BM04h00 0.21m
BM13h00 0.14m
BM16h00 0.13m
BM18h00 0.12m
BM21h00 0.11m
BM23h00 0.10m
23 WedCoeff. --
PM04h00 0.11m
PM06h00 0.12m
BM09h00 0.10m
BM12h00 0.08m
BM15h00 0.07m
PM16h00 0.08m
BM21h00 0.07m
24 ThuCoeff. --
PM05h00 0.10m
PM07h00 0.11m
PM18h00 0.15m
PM21h00 0.17m
25 FriCoeff. --
PM03h00 0.22m
PM05h00 0.23m
PM08h00 0.24m
BM14h00 0.19m
BM18h00 0.18m
BM22h00 0.14m
Open in the full Oracle ⚓ Customise for my boat

(the full app is available in French)

Marine weather at other ports → See all ports (159)
WARNING: The Sea Oracle is a decision-support tool based on automated forecasts (international marine and tide models via Open-Meteo). This data does not replace official documents (UK Hydrographic Office, Met Office) or the skipper's own judgement, who remains solely responsible for safety on board.

© 2026 MALO MEDIA LAB — Contact