Florianópolis tide times

Predictions: Open-Meteo Marine (MeteoFrance SMOC, 0.08° grid) — heights relative to MSL (not chart datum / LAT). Model-derived.

Model-derived from a global ocean grid. Useful indication; expect about ±45 minutes on average vs. a local harmonic gauge, individual stations vary widely. See /methodology for per-region detail. Not for navigation.

Conditions as of 20:00 local time. Refreshes daily.

Predictions: Open-Meteo Marine (MeteoFrance SMOC, 0.08° grid) — heights relative to MSL (not chart datum / LAT). Model-derived. · Not for navigation.

The angler tradition for major/minor fishing windows: major ≈3-hour windows around moon transit and opposition; minor ≈2-hour windows around moonrise and moonset. Times are America/Sao Paulo local. Folk tradition, not a scientific forecast.

Last spring tide on Sun 03 May (range 0.6m). Next neap on Fri 08 May.

Spring tides cluster around new and full moons (biggest swings). Neap tides land on quarter moons (smallest swings). See the spring tide and neap tide glossary entries for the why.

Florianópolis is on Santa Catarina Island, connected to the mainland by bridges, and has the most diverse surf coast in southern Brazil — 42 distinct beaches across the island, ranging from protected bay beaches on the northern and central coast to exposed Atlantic surf beaches on the east and south. Tidal pattern is semidiurnal with a mean spring range of about 0.5 metres. The low tidal range is typical of the Brazilian south Atlantic; what matters for wave quality here is the South Atlantic swell generated by extratropical cyclones (frontal systems that move northeast from Patagonia) and the occasional swell from North Atlantic storms that rounds the continent. Joaquina Beach on the east coast is the most established surf spot — the 1980s and 1990s South American surfing championships were held here. The beach break has several peaks working on south and southeast swell; sandbar position varies seasonally after storm reworking. Praia Mole, just north of Joaquina, is narrower with a punchier, more localised wave. Both beaches face southeast, giving good fetch from the South Atlantic storm track. The Lagoa da Conceição, a large brackish lagoon in the centre of the island, is the windsurfing and kitesurfing hub of Florianópolis. The lagoon is wind-exposed from the southeast — the same direction as the ocean swell — and produces consistent 15 to 25 knot conditions in the afternoon sea breeze. A dense cluster of water sports schools operates on the lagoon's west shore. The lagoon is connected to the sea by a narrow canal; tidal exchange is minimal. North coast beaches (Jurerê, Daniela) face northwest into the sheltered bay between the island and the mainland. These are the family beaches — calm water, gentle entry, and the infrastructure of bars and restaurants that makes Floripa one of Brazil's most complete beach destinations. Water temperature is 18 to 24°C depending on season; cold fronts from the south can drop sea temperature by 5°C within 24 hours. The Atlantic forest (Mata Atlântica) remnants on the island's elevated central ridge are accessible by trail from the Lagoa da Conceição area. Dolphins are regularly seen in the sheltered bay north of the island; the Baia Norte has a resident population of the Irrawaddy dolphin equivalent (boto-cinza, Sotalia guianensis). Predictions on this page come from Open-Meteo Marine, a gridded global ocean model. Accuracy is typically within plus or minus 45 minutes on timing and 0.2 to 0.3 metres on height — model-derived, not from a local gauge. For Brazilian tide data, consult the Directorate of Hydrography and Navigation (DHN) at mar.mil.br/dhn.