XtremeGator · Sea Report SEA REPORT · No. 047 TIDE. WIND. WAVE. GO!
MON, MAY 18 · 5:00 AM ET South Pointe Pier · South Beach
Today's Verdict · Recommended Sport

FAIR. SNORKEL.

Best Window
06:00 – 17:00ET · 11 HOURS

Best window 06:00 – 17:00 ET — Snorkel scores 4.7/10. Wind avg 12 kt, swell 1.6ft, visibility est 22ft.

4.7/ 10
Wave
2.6FT
4.4s · E 95°
Wind
12KT
E 90° · Gust 19
Tide
RISING
High 10:46 · 2.3ft
Water / Vis.
86°F
Viz 22ft est · Air 81°
02 / Sun & Moon

SUN & MOON.

Visibility arcs · live lunar phase
SUN
13:25
DAYLIGHT
SUNRISE 06:34 SUNSET 19:59
Rise
06:34
Noon
13:17
Set
19:59
MOON
0%
ILLUMINATED
MOONRISE 10:02 MOONSET 00:12+1
Rise
10:02
Phase
New Moon
Set
00:12+1
Next full · in 13 days
03 / Today at a glance

TODAY, NOW.

Updated 04:58 ET
Source · NOAA + Open-Meteo Marine
Wind
12KT
Gust 17 kt · SE 138°
N
Tide
RISING
Next high 10:46 · 2.3ft
Next low 17:02 · -0.5ft
Air / Water
81°F AIR
Water 86°F · 29.8°C
Feels 82°F · Humidity 74%
UV Index
9/ 11
VERY HIGH · Peak 13:20
Burn time ≈ 20 min
Vis · Underwater
22FT
Turbidity LOW · Plankton OK
Last diver report · Yesterday 16:00
Daylight
06:36
↑ Sunrise
20:01
↓ Sunset
Daylight 13h25m · Civil dawn 06:14
02 / Today's Headlines

TODAY'S NUMBERS.

The 4 critical numbers, full-size
NOAA + Open-Meteo · 05:00 ET
Air Temp
80°F
Feels 81°
Wave
2.6FT
4.4s · E 95°
UV Index
8/11
V.HIGH · peak 14:00
03 / Sport-by-sport verdict

GO / NO-GO.

6 disciplines
Best window highlighted · 05–22h
Snorkeling
MARGINAL SCORE · 4.7 / 10
Best window 09:00–11:30 AM — slack high tide brings clarity to 45ft, light SE breeze keeps the chop down, surface temp 79°F. Reef shelf at 12ft is calm enough for kids and first-timers.
05 · 09 · 13 · 17 · 21 h 06:00 → 17:00
Scuba
MARGINAL SCORE · 4.7 / 10
Best window 10:00 AM–01:00 PM — visibility 48ft at 35ft, current 0.4 kt drifting N, thermocline mild. Boat ramp at Government Cut accessible — small craft advisory cleared at 07:00.
05 · 09 · 13 · 17 · 21 h 06:00 → 17:00
SUP
AVOID SCORE · 0.0 / 10
Early window 06:30–08:30 only. Glass before sunrise. Wind picks up after 09:00 from the SE at 14+ kt — paddle out before then or shift to the bay (Maurice Gibb Park flat all day).
05 · 09 · 13 · 17 · 21 h 00:00 → 00:00
Kayak
MARGINAL SCORE · 4.7 / 10
All-day green on the bay side. Launch from Crandon or Oleta — wind cross-shore at 11 kt is manageable. Ocean side fine until 13:00 then chop builds. Bring 2L water — UV peaks 9.
05 · 09 · 13 · 17 · 21 h 06:00 → 17:00
Freediving
AVOID SCORE · 1.7 / 10
Slack high only — 10:30–11:30 AM. Vis OK at 42ft but a 0.9 kt south-running current on either side of slack. Buddy mandatory. Government Cut closed to recreational dives until 16:00 (ship traffic).
05 · 09 · 13 · 17 · 21 h 06:00 → 09:00
Open-Water
Swim
AVOID SCORE · 0.0 / 10
Best window 06:00–09:30 AM — flat water before the wind picks up, light SE breeze at 7 kt, water 79°F comfortable without wetsuit. Buoy line from South Pointe to Government Cut marks the safe lane. Bring a tow float if solo. No jellyfish advisory.
05 · 09 · 13 · 17 · 21 h 00:00 → 00:00
04 / Tide · 5 days · drag chart

THE TIDE.

NOAA Station 8723214 · Virginia Key
MLLW datum · feet · 30-min res
MON 18 TUE 19 WED 20 THU 21 FRI 22 0.0ft 04:41 2.3ft 10:46 -0.5ft 17:02 2.4ft 23:32 0.0ft 05:34 2.2ft 11:40 -0.4ft 17:57 2.3ft 00:26 0.1ft 06:31 2.2ft 12:37 -0.3ft 18:57 2.3ft 01:20 0.1ft 07:33 2.1ft 13:37 -0.1ft 19:59 2.2ft 02:15 0.1ft 08:33 2.0ft 14:37 -0.0ft 20:58 NOW 05:00
Currently RISING+0.4 ft/h → slack at 09:58
Range today 2.6FT MEAN spring · new moon +2
Best slack 10:00±30 m cleanest visibility window
Current vel 0.8KT N drifting toward Government Cut
05 / Hourly meteogram · 6 days

HOUR BY HOUR · 6 DAYS.

Open-Meteo Marine + Forecast
2-hour resolution · drag to scroll
DRAG TO SEE THE NEXT DAYS
05L / Wave · Wind · Swell (legacy fallback)

WAVE · WIND · SWELL.

Hidden in v4 — meteogram supersedes
4 ft 3 ft 2 ft 1 ft 3.1 ft 8.2s 8.5s 9.0s 9.4s 9.1s 8.7s 05h 09h 13h 17h 21h 01h 04h
Wave height (ft) Wind speed (kt) Daily peak Period labels at axis · seconds
Peak wave
3.1FT · 17:00
Mean period
8.9S
Peak wind
15KT · 20:00
Dominant swell
ESE112°
06 / Live cam

THE OCEAN, NOW.

FREE live camera
provided by the City of Miami Beach
Refreshes in real time
South Beach 1st Street live cam — dawn capture · click to watch live free
Live · captured 04:58 ET FREE · CITY OF MIAMI BEACH
1st Street · South Beach

Dawn light.
Glass on the inside.

↑ Tap anywhere to WATCH LIVE · Official free Ocean Rescue webcam · Miami Beach · refresh 60s
Click to watch live
07 / Long view

THE WEEK AHEAD.

Thu · Fri · Sat · Sun
Composite verdict = worst of 5
08 / Archive

PAST 7 DAYS.

Past bulletins · living archive