Marine Weather and Tide Forecast for South Daytona, FL

UPDATE
Issued at 951 AM EDT Wed Apr 30 2025

XMR sounding analysis (10Z) has shown a drier airmass in place with an observed PWAT of 0.75", and no precip is forecast. A period of onshore flow continues with winds increasing to 10-15 mph as the east coast sea breeze develops late this morning and into the afternoon. High temperatures are forecast to spread the 80s today, peaking in the mid to upper 80s across the interior.
Temperatures remain cooler along the coast and in vicinity of I-95 with values in the low 80s. The current forecast remains on track.

PREVIOUS DISCUSSION
Issued at 345 AM EDT Wed Apr 30 2025

Today-Tonight...An area of high pressure located across the western Atlantic waters will remain nearly stationary, with the ridge axis remaining north of Florida. Persistent onshore flow is anticipated locally, with the development of the east coast sea breeze enhancing easterly winds this afternoon. Rain chances remain below 10 percent thanks to the drier air mass present across east central Florida, with mostly clear skies forecast today into tonight outside of some marine stratocu. Near to slightly above normal temperatures forecast, with highs along the coast in the low 80s and across the interior in the mid to upper 80s. Overnight lows generally in the 60s, though some rural portions of east central Florida (specifically northern Lake and Volusia and Osceola and Okeechobee)
could see lows falling into the upper 50s.

Despite the objectively pleasant weather, beach conditions are forecast to be poor. A higher-end moderate rip current risk is expected at all east central Florida beaches today. Always swim near a lifeguard and heed the advice of local beach safety officials and posted beach safety flags. Never enter the ocean alone.

Thursday-Friday...The surface high located across the western Atlantic is forecast to drift southward through the end of the work week, weakening into Friday as it loses its mid-level support. The ridge axis moves southward towards the Florida peninsula, remaining just north of the local area. As a result, onshore winds on Thursday veer to out of the southeast into Friday, becoming easterly during the afternoon as the east coast sea breeze develops and moves inland. The change in flow allows for greater moisture advection towards the area on Friday, with mostly dry conditions on Thursday turning a bit wetter into Friday. Rain chances increase, especially across the local Atlantic waters, and some movement of these showers onshore cannot be ruled out. Current guidance indicates the Treasure Coast will have the best chance of seeing any sort of onshore-moving shower activity, with most places elsewhere remaining mostly dry on Friday. Slightly warmer conditions anticipated to round out the work week, with highs in the low to mid 80s along the coast and mid 80s to low 90s across the interior. Lows in the 60s.

Saturday-Tuesday...A weakening cold front is forecast to slowly approach Florida heading into the weekend. Increasing moisture is anticipated out ahead of the front due not only to the moist airmass out ahead of the front, but also from the south-southeast winds advecting moisture towards the peninsula. The result of this will be increasing rain chances across east central Florida, with the greatest chances focused mainly during the afternoon hours each day. There is also a low chance (20 percent) for storm development with this activity, with lightning strikes, gusty winds, and brief heavy downpours being the main concerns if storm development were to occur. The exact extent of storm threats and timing is still too early to determine, but will become clearer over time as guidance comes into better agreement. Activity is anticipated to diminish into the overnight hours across the peninsula, continuing across the local Atlantic waters through each night.

Forecasted temperatures continue to remain near to slightly above normal through the weekend, with highs cooling a bit Monday and Tuesday as the weakening front sinks south of the area. Lows are forecast to remain fairly consistent and right around normal each evening.

MARINE
Issued at 345 AM EDT Wed Apr 30 2025

Generally favorable boating conditions are forecast across the local Atlantic waters as an area of high pressure remains situated across the western Atlantic through at least Friday. Seas of 2 to 4 feet are forecast with onshore winds of 10 to 15 knots today through Thursday gradually veering to out of the southeast on Friday at 10 to 15 knots. The high begins to erode into Friday as a weakening front begins a slow approach towards the area, eventually moving across the waters and stalling late this weekend into early next week. Rain and storm chances are forecast to increase across the local waters starting Friday, remaining at 30 to 50 percent through the remainder of the period. Seas are anticipated to remain at 2 to 4 feet, with south-southeast winds of 10 to 15 knots prevailing through Sunday.

AVIATION
(12Z TAFs)
Issued at 637 AM EDT Wed Apr 30 2025

VFR conditions forecast across the area today into tonight, as a dry airmass remains in place over the region. Some SCT to at times BKN clouds around 3500-5000 ft will occur, especially along the coast this morning and tonight. Easterly winds increase to 10-15 knots this afternoon, with gusts up to around 20 knots, and then diminish to 5-10 knots into tonight.

FIRE WEATHER
Issued at 345 AM EDT Wed Apr 30 2025

High pressure located across the western Atlantic waters will help keep conditions dry locally and allow for continued drying of fuels, with persistent onshore flow increasing each afternoon as the east coast sea breeze moves inland. Minimum RH values are forecast to near critical thresholds across the interior today through Friday, with sensitive fire weather conditions anticipated for east central Florida.

The area of high pressure begins to weaken late this week into the weekend, with a return of rain chances (30 to 50 percent)
forecast across the area as a weakening front approaches. There is also a low chance (20 percent) for storm development, though confidence remains low at this time. The highest coverage of showers and any storms is forecast to be during the afternoon hours as the sea breeze moves inland. Minimum RH values recover and remain above critical thresholds through the weekend and into early next week, with veering winds also remaining generally below 15 mph. Despite the increasing moisture, sensitive fire weather conditions will still be possible, since any storms and their associated lightning strikes could spark new wildfires across east central Florida.

PRELIMINARY POINT TEMPS/POPS
DAB 81 63 83 65 / 0 0 0 0 MCO 85 63 86 66 / 0 0 0 0 MLB 81 68 82 68 / 0 0 0 10 VRB 81 66 82 66 / 0 0 0 10 LEE 87 63 88 66 / 0 0 0 0 SFB 85 63 86 65 / 0 0 0 0 ORL 85 64 86 66 / 0 0 0 0 FPR 80 66 82 66 / 0 0 0 10

MLB WATCHES/WARNINGS/ADVISORIES
FL...None.
AM...None.