Great Diamond Island tides
Maine · NOAA 8417988Now
High tide
4:40 am
Tide curve Today
7 days tap a day
Best fishing times
TodayWeekend outlook
How these times are worked out
Major periods are the two hours centred on the moon passing overhead or underfoot; minor periods are the hour centred on moonrise and moonset (solunar tables). Moon and sun times are computed for this station’s position with the PyEphem astronomy library; high and low tides are NOAA predictions. A period is marked best bet when it overlaps sunrise or sunset (within an hour) or contains a high or low tide. This is a traditional angler’s rule of thumb, not a guarantee, and it does not include weather, season or local rules.
Tide table, next 7 days
Today in Great Diamond Island, high tide is at 4:40 am and 4:56 pm and low tide at 10:36 am and 11:23 pm.
| Monday 2 November6:18 am 4:30 pm · Last quarter | ||
|---|---|---|
| High | 4:40 am | 8.8 ft |
| Low | 10:36 am | 1.1 ft |
| High | 4:56 pm | 9.7 ft |
| Low | 11:23 pm | 0.3 ft |
| Tuesday 3 November6:19 am 4:29 pm · Waning crescent | ||
| High | 5:46 am | 8.9 ft |
| Low | 11:47 am | 1.1 ft |
| High | 6:05 pm | 9.5 ft |
| Wednesday 4 November6:21 am 4:28 pm · Waning crescent | ||
| Low | 12:28 am | 0.3 ft |
| High | 6:49 am | 9.2 ft |
| Low | 12:57 pm | 0.8 ft |
| High | 7:12 pm | 9.4 ft |
| Thursday 5 November6:22 am 4:26 pm · Waning crescent | ||
| Low | 1:27 am | 0.3 ft |
| High | 7:45 am | 9.6 ft |
| Low | 1:58 pm | 0.4 ft |
| High | 8:11 pm | 9.4 ft |
| Friday 6 November6:23 am 4:25 pm · Waning crescent | ||
| Low | 2:20 am | 0.3 ft |
| High | 8:35 am | 9.9 ft |
| Low | 2:52 pm | 0.0 ft |
| High | 9:04 pm | 9.4 ft |
| Saturday 7 November6:25 am 4:24 pm · Waning crescent | ||
| Low | 3:07 am | 0.4 ft |
| High | 9:21 am | 10.1 ft |
| Low | 3:40 pm | −0.2 ft |
| High | 9:52 pm | 9.4 ft |
| Sunday 8 November6:26 am 4:23 pm · New moon | ||
| Low | 3:50 am | 0.6 ft |
| High | 10:02 am | 10.2 ft |
| Low | 4:24 pm | −0.3 ft |
| High | 10:37 pm | 9.2 ft |
Monthly tide tables
Printable tables with every high and low, sunrise, sunset and moon phases.
Nearby stations
- Peak Island, ME1 mi
- Cow Island, ME1 mi
- Cushing Island, ME2 mi
- Long Island, ME2 mi
- Vaill Island, ME2 mi
- Portland, ME2 mi
- Presumpscot River Bridge, ME3 mi
- Back Cove, ME3 mi
King tides and lowest tides
The highest highs and lowest lows NOAA predicts here over the next 12 months, at least 4 days apart.
Highest high tides
Bars compare the five dates in each list. Tap a date for that month’s full table.
About this station
Great Diamond Island is a NOAA subordinate station in Maine. NOAA predicts only its high and low tides, by applying time and height offsets to the reference station Portland (8418150).
- Avg. tidal range9.0 fthigh to next low
- Tides per day42 highs, 2 lows · 6 h 13 m apart
- Highest, 13 mo11.6 ft25 Dec 2026, 11:24 am
- Lowest, 13 mo−1.9 ft23 Jan 2027, 5:38 pm
- Minus tides210lows below zero, 13 mo
Nearest stations
43.6700° N, 70.2000° W · NOAA 8417988 · Eastern time
Great Diamond Island tide FAQ
When is the next high tide in Great Diamond Island?
The next high tide is at 4:40 am today (Monday 2 November), reaching 8.8 ft. After that, the next high is at 4:56 pm today (Monday 2 November) (9.7 ft).
When is low tide today in Great Diamond Island?
There are two low tides today: 10:36 am (1.1 ft) and 11:23 pm (0.3 ft).
How many tides a day does Great Diamond Island get?
Usually two highs and two lows a day, about 6 h 13 min apart on average. The two highs of a day are usually similar in height. 54 of the 398 days in NOAA’s predictions have only three turns of the tide.
What is the tidal range in Great Diamond Island?
The average change from one high to the next low is 9.0 ft. From the day’s highest to its lowest water it averages 9.8 ft, and the biggest single swing predicted in the next 13 months is 13.4 ft.
When are the king tides in Great Diamond Island this year?
The highest predicted tide is 11.6 ft on Friday 25 December 2026 at 11:24 am (waning gibbous). Other king tides: 11.6 ft on 6 July 2027, 11.6 ft on 4 August 2027 and 11.5 ft on 23 January 2027. The lowest is −1.9 ft on 23 January 2027 at 5:38 pm.
What is the best time to fish in Great Diamond Island today?
The best bets today are 5:16–7:16 am (moon overhead, around sunrise). These solunar periods line up with sunrise, sunset or a turn of the tide.
Figures from NOAA CO-OPS predictions for station 8417988, next 13 months. Heights above MLLW.