Long Island tide times

Casco Bay, MECasco BayNOAA 8417941Friday, October 16 · EDTFri Oct 16Predictions onlyChange station

Today at Long Island the next low tide is at 9:18 AM (1.9 ft) and the next high tide is at 3:31 PM (9.0 ft). Tomorrow's first low is at 10:08 AM.

Estimated now
2.7 ft ↓
Falling 1.1 ft per hour
Next low
9:18 AM
In 1 h 23 min · 1.9 ft
Next high
3:31 PM
In 7 h 36 min · 9.0 ft
Tide range today
7.8 ft
Neap tides Monday
Predictions only. No live gauge at this station.

Today's tide

Estimated curve between high and low timesNightHeight above MLLW
0 ft2 ft4 ft6 ft8 ft10 ftNOW 7:553:30 AMHigh · 8.1 ft9:18 AMLow · 1.9 ft3:31 PMHigh · 9.0 ft10:02 PMLow · 1.2 ft
Tide chart for Long Island, today. High 8.1 ft at 3:30 AM, low 1.9 ft at 9:18 AM, high 9.0 ft at 3:31 PM, low 1.2 ft at 10:02 PM.

Heights and times are estimated from Portland,casco Bay using NOAA offsets. Only the high and low points are official; the curve between them is drawn by us.

Today's tides

ft above MLLW
  • High3:30 AM8.1 ft
  • Low9:18 AM1.9 ft
  • High3:31 PM9.0 ft
  • Low10:02 PM1.2 ft
Tide times for Long Island
TideTimeHeight
High3:30 AM8.1 ft
Low9:18 AM1.9 ft
High3:31 PM9.0 ft
Low10:02 PM1.2 ft
Sunrise
6:57 AM
First light 6:28
Sunset
5:57 PM
Last light 6:26
Moon
32%
Waxing crescent
Tide range
7.8 ft
Mean 9.1 ft

Best windows today

Plan the week →
  • Fishing
    7:00 to 8:00 AM

    Dawn light with the outgoing tide around the 9:18 AM low.

  • Tidepools & shelling
    8:00 to 10:00 AM

    The 1.9 ft low at 9:18 AM falls in full daylight. The tide returns fast here, so start heading back by 10:15 AM.

  • Surfing
    11:00 AM to 1:00 PM

    Mid tide from 11:00 AM to 1:00 PM. No wind sensor at this station.

  • Shallow boat launch
    Avoid 9:00 to 11:00 PM

    Under 1.5 ft around low water. Launch before 9:00 PM.

Plan the week

Moving water around the turn often fishes best. Local species and bait matter more than any chart.

High and low tides for the next 7 days, heights in ft
DayTide 1Tide 2Tide 3Tide 4Range, ft
TodayFri 16H3:30a8.1L9:18a1.9H3:31p9.0L10:02p1.27.8
SatOct 17H4:21a7.8L10:08a2.2H4:24p8.7L10:55p1.47.2
SunOct 18H5:16a7.6L11:03a2.3H5:21p8.5L11:51p1.67.0
MonOct 19H6:12a7.6L12:00p2.3H6:19p8.56.1
TueOct 20L12:46a1.5H7:08a7.8L1:00p2.2H7:16p8.67.0
WedOct 21L1:39a1.4H7:59a8.2L1:56p1.8H8:11p8.87.4
ThuOct 22L2:27a1.1H8:45a8.7L2:48p1.2H9:00p9.18.0

Neap tides Monday. Smaller range, so highs and lows stay close to average. Spring and neap tides

Tide predictions and observations: NOAA National Ocean Service, Center for Operational Oceanographic Products and Services (CO-OPS), station 8417941.

Nearby stations

Currents

Hussey Sound, Cow Island

  • Max flood12:37 AM 0.8 kn
  • Slack3:31 AM
  • Max ebb6:10 AM 0.5 kn
  • Slack8:03 AM
  • Max flood12:45 PM 1.0 kn
  • Slack3:44 PM
  • Max ebb6:53 PM 0.7 kn
  • Slack9:35 PM

Current predictions for Hussey Sound, Cow Island, 0.4 mi away. Currents near inlets can be strong. Not for navigation.

Station details

Datum
Mean lower low water
Predictions
NOAA subordinate, from Portland,casco Bay
Live gauge
None
Coordinates
43.690° N, 70.170° W
Time zone
Eastern, UTC−4
Station ID
NOAA 8417941
Also known as
Cow Island

About the tides at Long Island

Tides here follow a regular twice-daily rhythm. The two daily highs usually differ by only 0.8 ft. The pattern follows the reference station at Portland,casco Bay. The range is large, about 9.1 ft on average. Flats and bars appear and vanish quickly, so keep an eye on the time. From the average lower low to the average higher high, the difference is 9.9 ft. The next spring tides peak on October 28, with a range of 12.4 ft. Neap tides follow on Monday, when the range shrinks to 6.1 ft. In the next 12 months the highest predicted tide here is 11.6 ft on December 25, and the lowest is −1.8 ft on January 23.

Long Island is a subordinate station. NOAA predicts its tides by adjusting Portland,casco Bay: highs come about 1 min and lows about 1 min earlier than there. NOAA measured the tide here in 1979 to set up these predictions. The nearest other station is Vaill Island, 1 mi away, where high tide comes about 6 min later. For tidal currents, see Hussey Sound, Cow Island.

Predictions are based on Portland,casco Bay.

Tide predictions and water levels from NOAA CO-OPS. For planning only, not for navigation. Real water levels can differ because of wind, air pressure and river flow. Always check conditions on site.