Marine Weather Net

Volusia-Brevard County Line to Sebastian Inlet out 20 NM Marine Forecast


REST OF TONIGHT

S
WINDS
5 - 10
KNOTS

TUESDAY

SE
WINDS
10 - 15
KNOTS

TUESDAY NIGHT

S
WINDS
10 - 15
KNOTS

WEDNESDAY

SW
WINDS
5 KNOTS

The Marine Weather Forecast In Detail:
AMZ552 Forecast Issued: 932 PM EDT Mon Jun 22 2026

Rest Of Tonight...South Winds 5 To 10 Knots, Becoming Southwest Early This Morning. Seas 1 To 2 Feet. Wave Detail: Southeast 2 Feet At 3 Seconds And East 1 Foot At 7 Seconds. Mostly Smooth On The Intracoastal Waters.
Tuesday...Southwest Winds Around 5 Knots, Becoming Southeast 10 To 15 Knots In The Afternoon. Seas 1 To 2 Feet. Wave Detail: Southeast 2 Feet At 3 Seconds And East 1 Foot At 7 Seconds. A Moderate Chop On The Intracoastal Waters. A Slight Chance Of Showers And Thunderstorms In The Afternoon.
Tuesday Night...South Winds 10 To 15 Knots, Becoming West 5 To 10 Knots After Midnight. Seas 1 To 2 Feet. Wave Detail: Southeast 2 Feet At 4 Seconds And East 1 Foot At 8 Seconds. A Light Chop On The Intracoastal Waters.
Wednesday...Southwest Winds Around 5 Knots, Becoming Southeast In The Afternoon. Seas 1 To 2 Feet. Wave Detail: Southeast 1 Foot At 4 Seconds And East 1 Foot At 8 Seconds. A Light Chop On The Intracoastal Waters. A Slight Chance Of Showers. A Slight Chance Of Thunderstorms In The Afternoon.
Wednesday Night...South Winds 5 To 10 Knots. Seas 1 To 2 Feet. Wave Detail: Southeast 1 Foot At 3 Seconds And East 1 Foot At 8 Seconds. Mostly Smooth On The Intracoastal Waters. A Chance Of Showers And Thunderstorms In The Evening.
Thursday...South Winds Around 5 Knots, Becoming Southeast 10 To 15 Knots In The Afternoon. Seas 1 To 2 Feet. Wave Detail: Southeast 2 Feet At 4 Seconds And East 1 Foot At 8 Seconds. A Moderate Chop On The Intracoastal Waters. A Chance Of Showers And Thunderstorms In The Afternoon.
Thursday Night...South Winds 10 To 15 Knots, Diminishing To 5 To 10 Knots After Midnight. Seas 1 To 2 Feet. A Light Chop On The Intracoastal Waters. A Chance Of Showers And Thunderstorms In The Evening.
Friday...South Winds Around 5 Knots, Becoming Southeast In The Afternoon. Seas 1 To 2 Feet. A Light Chop On The Intracoastal Waters. A Slight Chance Of Showers And Thunderstorms In The Afternoon.
Friday Night...South Winds 5 To 10 Knots. Seas 2 Feet. Mostly Smooth On The Intracoastal Waters.
Saturday...South Winds Around 5 Knots, Becoming Southeast In The Afternoon. Seas 1 To 2 Feet. A Light Chop On The Intracoastal Waters.
Saturday Night...South Winds 5 To 10 Knots, Becoming Southwest After Midnight. Seas 2 Feet. Mostly Smooth On The Intracoastal Waters. Winds And Waves Higher In And Near Thunderstorms.
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Area Forecast Discussion
National Weather Service Melbourne FL
743pm EDT Monday Jun 22 2026

Issued at 218pm EDT Monday Jun 22 2026

Current - Tonight
Hot & humid, typical summer day in ECFL. Max temperatures to realize L90s at the coast with M90s (few U90s) into the interior, with peak heat indices 101-107. A little drier (low-levels) & warmer aloft than previous days, thus lower Probability of Precipitation chances 20-40% for this afternoon/evening. Sea breeze collision across the interior with a little push-back to the coast for a few cells before convection diminishes thru mid-evening. Localized minor flooding possible as a storm or two could deliver a quick 2-3" rainfall amount over a short period. Storm motion otherwise slow/erratic due to multiple boundary collisions. Primary storm impacts include frequent lightning strikes in a few storms, torrential downpours and locally strong wind gusts of 40-50 mph possible. Thinning skies tonight with eventual mins in the M-U70s. Not including fog mention in the grids/forecast, but given moisture from rain from past few days cannot rule out some localized shallow, patchy fog briefly towards Tuesday morning.

Tue-Tuesday Night...Similar forecast to Mon. Hot and humid conditions continue. Highs again in the 90s areawide with peak heat indices staying below Heat Advisory criteria, but still in the triple digits for most. Still advertising widespread Moderate to Major HeatRisk impacts. Highest precipitation chances later in the afternoon and early evening, with best chance south of Orlando 20-40% as low-levels remain drier. Rain chances continue below 20% near & north or Orlando. Convection, again, centered around later day boundary collisions and surface heating with available moisture.

Wed-Sun...Pattern stays stagnant a bit stagnant until some deeper moisture surges back into the area. Weak ridging aloft drifts from the western Atlantic back west across the FL peninsula and into the eastern Gulf. At the surface, high pressure ridging to the south will drift back north toward central FL into the weekend. Pre-dominant offshore (albeit weak) surface flow (occasionally southerly) continues into the weekend, but "backs" onshore each afternoon with sea breeze formation and march inland. Diurnal showers/storms, scattered to locally numerous (Wed/Thu), continue thru the period. Highest coverage over the interior late day and early evening, with some push back towards the coast each evening. Forecasted HeatRisk between widespread Moderate to Major with pockets of Extreme impacts on any given day.

Marine
Issued at 218pm EDT Monday Jun 22 2026

Thru Fri...Generally favorable boating conditions continue. Weak surface ridge axis remains situated stationed over south FL mid- week, then begins to drift further northward toward central FL. Flow generally offshore (WSW-SW) shifting onshore (SE-E) each afternoon, though flow may become more southerly later in the period as the ridge axis begins to lift north. Wind speeds generally 5-15 kts, peaking to 15 kts or more at times in the evenings offshore. Seas 1- 2 ft, but locally higher in the vicinity of showers/lightning storms. The east coast sea breeze will be able to move inland most days, lowering chances for offshore-moving showers and storms in the late afternoon and evening, with highest chances Wed/Thu.

NOAA Melbourne FL Office: Watches - Warnings - Advisories
FL...None. AM...None.