Today's tide times for Portland, Casco Bay, Maine
The predicted tide times today on Monday 17 August 2026 for Portland, Casco Bay are: first high tide at 2:55am, first low tide at 9:02am, second high tide at 3:19pm, second low tide at 9:34pm. Sunrise is at 5:47am and sunset is at 7:41pm.
Today's tide times for Portland, Casco Bay: Monday 17 August 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| High Tide | 2:55 AM(Mon 17 August) | 9.76 ft (2.97 m) |
| Low Tide | 9:02 AM(Mon 17 August) | 0.16 ft (0.05 m) |
| High Tide | 3:19 PM(Mon 17 August) | 9.86 ft (3.01 m) |
| Low Tide | 9:34 PM(Mon 17 August) | 0.3 ft (0.09 m) |
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Tide chart for Portland, Casco BayShowing low and high tide times for the next 30 days at Portland, Casco Bay. Tide Times are EDT (UTC -4.0hrs).
View Portland, Casco Bay 7 Day Tide Chart Image.


HIGH (EDT) |
LOW (EDT) |
| Sun |
Moon Set Rise |
| Wind |
Monday, 17 Aug | 18 Aug | 19 Aug | 20 Aug | 21 Aug | 22 Aug | 23 Aug | 24 Aug | 25 Aug | 26 Aug | 27 Aug | 28 Aug | 29 Aug | 30 Aug | 31 Aug | 1 Sep | 2 Sep | 3 Sep | 4 Sep | 5 Sep | 6 Sep | 7 Sep | 8 Sep | 9 Sep | 10 Sep | 11 Sep | 12 Sep | 13 Sep | 14 Sep | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AM | PM | Tue | Wed | Thu | Fri | Sat | Sun | Mon | Tue | Wed | Thu | Fri | Sat | Sun | Mon | Tue | Wed | Thu | Fri | Sat | Sun | Mon | Tue | Wed | Thu | Fri | Sat | Sun | Mon | ||
2:55AM2.97m | 3:19PM3.01m | 3:46AM2.78m 4:07PM2.91m | 4:40AM2.60m 4:58PM2.81m | 5:36AM2.45m 5:51PM2.72m | 6:34AM2.34m 6:47PM2.66m | 7:36AM2.30m 7:47PM2.66m | 8:35AM2.32m 8:44PM2.72m | 9:27AM2.39m 9:33PM2.80m | 10:12AM2.48m 10:17PM2.89m | 10:53AM2.58m 10:58PM2.96m | 11:30AM2.69m 11:36PM3.02m | 12:06PM2.79m | 00:14AM3.05m 12:40PM2.90m | 00:52AM3.05m 1:14PM2.99m | 1:31AM3.02m 1:49PM3.06m | 2:12AM2.95m 2:29PM3.10m | 2:57AM2.86m 3:15PM3.11m | 3:49AM2.74m 4:07PM3.08m | 4:48AM2.63m 5:06PM3.04m | 5:53AM2.55m 6:11PM3.01m | 7:03AM2.53m 7:21PM3.02m | 8:15AM2.60m 8:32PM3.09m | 9:18AM2.72m 9:34PM3.18m | 10:13AM2.87m 10:29PM3.24m | 11:04AM3.01m 11:22PM3.26m | 11:51AM3.10m | 00:11AM3.22m 12:35PM3.14m | 00:58AM3.13m 1:17PM3.14m | 1:42AM3.00m 1:58PM3.08m | ||
9:02AM0.05m | 9:34PM0.09m | 9:49AM0.23m 10:28PM0.21m | 10:38AM0.40m 11:23PM0.32m | 11:30AM0.54m | 00:21AM0.41m 12:25PM0.63m | 1:23AM0.44m 1:25PM0.67m | 2:25AM0.43m 2:24PM0.65m | 3:17AM0.36m 3:16PM0.57m | 4:02AM0.27m 4:01PM0.48m | 4:42AM0.18m 4:42PM0.37m | 5:18AM0.10m 5:22PM0.27m | 5:53AM0.04m 6:01PM0.17m | 6:27AM-0.01m 6:40PM0.08m | 7:01AM-0.03m 7:19PM0.01m | 7:37AM-0.02m 8:02PM-0.04m | 8:17AM0.02m 8:47PM-0.04m | 9:01AM0.09m 9:38PM-0.00m | 9:51AM0.18m 10:36PM0.05m | 10:47AM0.27m 11:38PM0.10m | 11:49AM0.34m | 00:46AM0.12m 12:57PM0.35m | 1:57AM0.08m 2:08PM0.30m | 3:02AM-0.01m 3:14PM0.18m | 3:59AM-0.11m 4:12PM0.04m | 4:50AM-0.18m 5:05PM-0.07m | 5:37AM-0.19m 5:56PM-0.14m | 6:22AM-0.16m 6:44PM-0.16m | 7:04AM-0.07m 7:29PM-0.12m | 7:44AM0.06m 8:14PM-0.03m | ||
5:47AM | 7:41PM | 5:48AM 7:39PM | 5:50AM 7:38PM | 5:51AM 7:36PM | 5:52AM 7:34PM | 5:53AM 7:33PM | 5:54AM 7:31PM | 5:55AM 7:30PM | 5:56AM 7:28PM | 5:57AM 7:26PM | 5:59AM 7:25PM | 6:00AM 7:23PM | 6:01AM 7:21PM | 6:02AM 7:19PM | 6:03AM 7:18PM | 6:04AM 7:16PM | 6:05AM 7:14PM | 6:06AM 7:12PM | 6:08AM 7:11PM | 6:09AM 7:09PM | 6:10AM 7:07PM | 6:11AM 7:05PM | 6:12AM 7:03PM | 6:13AM 7:02PM | 6:14AM 7:00PM | 6:15AM 6:58PM | 6:16AM 6:56PM | 6:18AM 6:54PM | 6:19AM 6:53PM | ||
0.17% - (Waxing Crescent) 11:26AM | 0.19% - (Waxing Crescent) 9:41PM | 0.21% - (Waxing Crescent) 10:06PM 12:34PM | 0.25% - (First Quarter) 10:36PM 1:41PM | 0.28% - (Waxing Gibbous) 11:13PM 2:46PM | 0.32% - (Waxing Gibbous) 11:58PM 3:45PM | 0.35% - (Waxing Gibbous) 4:38PM | 0.39% - (Waxing Gibbous) 00:51AM 5:22PM | 0.42% - (Waxing Gibbous) 1:51AM 5:58PM | 0.45% - (Waxing Gibbous) 2:57AM 6:27PM | 0.49% - (Full Moon) 4:04AM 6:52PM | 0.52% - (Full Moon) 5:13AM 7:13PM | 0.56% - (Waning Gibbous) 6:21AM 7:33PM | 0.59% - (Waning Gibbous) 7:30AM 7:52PM | 0.63% - (Waning Gibbous) 8:40AM 8:12PM | 0.66% - (Waning Gibbous) 9:52AM 8:34PM | 0.7% - (Waning Gibbous) 11:06AM 9:01PM | 0.73% - (Last Quarter) 12:23PM 9:34PM | 0.77% - (Last Quarter) 1:40PM 10:16PM | 0.8% - (Waning Crescent) 2:52PM 11:12PM | 0.82% - (Waning Crescent) 3:55PM | 0.84% - (Waning Crescent) 4:45PM 00:19AM | 0.87% - (Waning Crescent) 5:24PM 1:36AM | 0.91% - (Waning Crescent) 5:54PM 2:56AM | 0.94% - (Waning Crescent) 6:20PM 4:15AM | 0.98% - (New Moon) 6:41PM 5:31AM | 0.03% - (Waxing Crescent) 7:02PM 6:45AM | 0.07% - (Waxing Crescent) 7:22PM 7:56AM | 0.1% - (Waxing Crescent) 7:43PM 9:07AM | 0.14% - (Waxing Crescent) 8:07PM 10:16AM | ||

Portland, Casco Bay tide chart key:
The tide chart above shows the height and times of high tide and low tide for Portland, Casco Bay, Maine. The red flashing dot shows the tide time right now. The grey shading corresponds to nighttime hours between sunset and sunrise at Portland, Casco Bay.
Tide Times are EDT (UTC -4.0hrs). Last Spring High Tide at Portland, Casco Bay was on Wed 12 Aug (height: 3.40m 11.2ft). Next high Spring Tide at Portland, Casco Bay will be on Fri 28 Aug (height: 3.05m 10.0ft).
Portland, Casco Bay tide chart key: The tide chart above shows the height and times of high tide and low tide for Portland, Casco Bay, Maine. The grey shading corresponds to nighttime hours between sunset and sunrise at Portland, Casco Bay.
Tide Times are EDT (UTC -4.0hrs). Last Spring High Tide at Portland, Casco Bay was on Wed 12 Aug (height: 3.40m 11.2ft). Next high Spring Tide at Portland, Casco Bay will be on Fri 28 Aug (height: 3.05m 10.0ft).
Portland, Casco Bay tide times for August and September
August and September Tide charts for Portland, Casco Bay: The tide charts below show the height, time and date of high and low tides for the next 30 days.
Tide Times for Portland, Casco Bay (tomorrow): Tuesday 18 August 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| High Tide | 3:46 AM(Tue 18 August) | 9.12 ft (2.78 m) |
| Low Tide | 9:49 AM(Tue 18 August) | 0.75 ft (0.23 m) |
| High Tide | 4:07 PM(Tue 18 August) | 9.54 ft (2.91 m) |
| Low Tide | 10:28 PM(Tue 18 August) | 0.68 ft (0.21 m) |
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Tide Times for Portland, Casco Bay: Wednesday 19 August 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| High Tide | 4:40 AM(Wed 19 August) | 8.53 ft (2.6 m) |
| Low Tide | 10:38 AM(Wed 19 August) | 1.31 ft (0.4 m) |
| High Tide | 4:58 PM(Wed 19 August) | 9.21 ft (2.81 m) |
| Low Tide | 11:23 PM(Wed 19 August) | 1.04 ft (0.32 m) |
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Tide Times for Portland, Casco Bay: Thursday 20 August 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| High Tide | 5:36 AM(Thu 20 August) | 8.04 ft (2.45 m) |
| Low Tide | 11:30 AM(Thu 20 August) | 1.76 ft (0.54 m) |
| High Tide | 5:51 PM(Thu 20 August) | 8.93 ft (2.72 m) |
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Tide Times for Portland, Casco Bay: Friday 21 August 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| Low Tide | 00:21 AM(Fri 21 August) | 1.33 ft (0.41 m) |
| High Tide | 6:34 AM(Fri 21 August) | 7.69 ft (2.34 m) |
| Low Tide | 12:25 PM(Fri 21 August) | 2.08 ft (0.63 m) |
| High Tide | 6:47 PM(Fri 21 August) | 8.74 ft (2.66 m) |
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Tide Times for Portland, Casco Bay: Saturday 22 August 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| Low Tide | 1:23 AM(Sat 22 August) | 1.46 ft (0.44 m) |
| High Tide | 7:36 AM(Sat 22 August) | 7.55 ft (2.3 m) |
| Low Tide | 1:25 PM(Sat 22 August) | 2.2 ft (0.67 m) |
| High Tide | 7:47 PM(Sat 22 August) | 8.74 ft (2.66 m) |
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Tide Times for Portland, Casco Bay: Sunday 23 August 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| Low Tide | 2:25 AM(Sun 23 August) | 1.4 ft (0.43 m) |
| High Tide | 8:35 AM(Sun 23 August) | 7.62 ft (2.32 m) |
| Low Tide | 2:24 PM(Sun 23 August) | 2.12 ft (0.65 m) |
| High Tide | 8:44 PM(Sun 23 August) | 8.91 ft (2.72 m) |
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Tide Times for Portland, Casco Bay: Monday 24 August 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| Low Tide | 3:17 AM(Mon 24 August) | 1.17 ft (0.36 m) |
| High Tide | 9:27 AM(Mon 24 August) | 7.84 ft (2.39 m) |
| Low Tide | 3:16 PM(Mon 24 August) | 1.88 ft (0.57 m) |
| High Tide | 9:33 PM(Mon 24 August) | 9.18 ft (2.8 m) |
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Tide Times for Portland, Casco Bay: Tuesday 25 August 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| Low Tide | 4:02 AM(Tue 25 August) | 0.89 ft (0.27 m) |
| High Tide | 10:12 AM(Tue 25 August) | 8.14 ft (2.48 m) |
| Low Tide | 4:01 PM(Tue 25 August) | 1.56 ft (0.48 m) |
| High Tide | 10:17 PM(Tue 25 August) | 9.47 ft (2.89 m) |
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Tide Times for Portland, Casco Bay: Wednesday 26 August 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| Low Tide | 4:42 AM(Wed 26 August) | 0.6 ft (0.18 m) |
| High Tide | 10:53 AM(Wed 26 August) | 8.47 ft (2.58 m) |
| Low Tide | 4:42 PM(Wed 26 August) | 1.23 ft (0.37 m) |
| High Tide | 10:58 PM(Wed 26 August) | 9.72 ft (2.96 m) |
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Tide Times for Portland, Casco Bay: Thursday 27 August 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| Low Tide | 5:18 AM(Thu 27 August) | 0.33 ft (0.1 m) |
| High Tide | 11:30 AM(Thu 27 August) | 8.81 ft (2.69 m) |
| Low Tide | 5:22 PM(Thu 27 August) | 0.89 ft (0.27 m) |
| High Tide | 11:36 PM(Thu 27 August) | 9.9 ft (3.02 m) |
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Tide Times for Portland, Casco Bay: Friday 28 August 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| Low Tide | 5:53 AM(Fri 28 August) | 0.12 ft (0.04 m) |
| High Tide | 12:06 PM(Fri 28 August) | 9.16 ft (2.79 m) |
| Low Tide | 6:01 PM(Fri 28 August) | 0.56 ft (0.17 m) |
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Tide Times for Portland, Casco Bay: Saturday 29 August 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| High Tide | 00:14 AM(Sat 29 August) | 10.0 ft (3.05 m) |
| Low Tide | 6:27 AM(Sat 29 August) | -0.03 ft (-0.01 m) |
| High Tide | 12:40 PM(Sat 29 August) | 9.5 ft (2.9 m) |
| Low Tide | 6:40 PM(Sat 29 August) | 0.26 ft (0.08 m) |
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Tide Times for Portland, Casco Bay: Sunday 30 August 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| High Tide | 00:52 AM(Sun 30 August) | 10.0 ft (3.05 m) |
| Low Tide | 7:01 AM(Sun 30 August) | -0.1 ft (-0.03 m) |
| High Tide | 1:14 PM(Sun 30 August) | 9.8 ft (2.99 m) |
| Low Tide | 7:19 PM(Sun 30 August) | 0.02 ft (0.01 m) |
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Tide Times for Portland, Casco Bay: Monday 31 August 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| High Tide | 1:31 AM(Mon 31 August) | 9.9 ft (3.02 m) |
| Low Tide | 7:37 AM(Mon 31 August) | -0.07 ft (-0.02 m) |
| High Tide | 1:49 PM(Mon 31 August) | 10.04 ft (3.06 m) |
| Low Tide | 8:02 PM(Mon 31 August) | -0.12 ft (-0.04 m) |
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Tide Times for Portland, Casco Bay: Tuesday 01 September 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| High Tide | 2:12 AM(Tue 01 September) | 9.69 ft (2.95 m) |
| Low Tide | 8:17 AM(Tue 01 September) | 0.06 ft (0.02 m) |
| High Tide | 2:29 PM(Tue 01 September) | 10.18 ft (3.1 m) |
| Low Tide | 8:47 PM(Tue 01 September) | -0.12 ft (-0.04 m) |
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Tide Times for Portland, Casco Bay: Wednesday 02 September 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| High Tide | 2:57 AM(Wed 02 September) | 9.37 ft (2.86 m) |
| Low Tide | 9:01 AM(Wed 02 September) | 0.3 ft (0.09 m) |
| High Tide | 3:15 PM(Wed 02 September) | 10.19 ft (3.11 m) |
| Low Tide | 9:38 PM(Wed 02 September) | -0.01 ft (-0.0 m) |
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Tide Times for Portland, Casco Bay: Thursday 03 September 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| High Tide | 3:49 AM(Thu 03 September) | 9.0 ft (2.74 m) |
| Low Tide | 9:51 AM(Thu 03 September) | 0.6 ft (0.18 m) |
| High Tide | 4:07 PM(Thu 03 September) | 10.09 ft (3.08 m) |
| Low Tide | 10:36 PM(Thu 03 September) | 0.17 ft (0.05 m) |
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Tide Times for Portland, Casco Bay: Friday 04 September 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| High Tide | 4:48 AM(Fri 04 September) | 8.64 ft (2.63 m) |
| Low Tide | 10:47 AM(Fri 04 September) | 0.89 ft (0.27 m) |
| High Tide | 5:06 PM(Fri 04 September) | 9.97 ft (3.04 m) |
| Low Tide | 11:38 PM(Fri 04 September) | 0.34 ft (0.1 m) |
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Tide Times for Portland, Casco Bay: Saturday 05 September 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| High Tide | 5:53 AM(Sat 05 September) | 8.38 ft (2.55 m) |
| Low Tide | 11:49 AM(Sat 05 September) | 1.11 ft (0.34 m) |
| High Tide | 6:11 PM(Sat 05 September) | 9.88 ft (3.01 m) |
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Tide Times for Portland, Casco Bay: Sunday 06 September 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| Low Tide | 00:46 AM(Sun 06 September) | 0.4 ft (0.12 m) |
| High Tide | 7:03 AM(Sun 06 September) | 8.31 ft (2.53 m) |
| Low Tide | 12:57 PM(Sun 06 September) | 1.16 ft (0.35 m) |
| High Tide | 7:21 PM(Sun 06 September) | 9.92 ft (3.02 m) |
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Tide Times for Portland, Casco Bay: Monday 07 September 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| Low Tide | 1:57 AM(Mon 07 September) | 0.27 ft (0.08 m) |
| High Tide | 8:15 AM(Mon 07 September) | 8.52 ft (2.6 m) |
| Low Tide | 2:08 PM(Mon 07 September) | 0.97 ft (0.3 m) |
| High Tide | 8:32 PM(Mon 07 September) | 10.13 ft (3.09 m) |
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Tide Times for Portland, Casco Bay: Tuesday 08 September 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| Low Tide | 3:02 AM(Tue 08 September) | -0.03 ft (-0.01 m) |
| High Tide | 9:18 AM(Tue 08 September) | 8.94 ft (2.72 m) |
| Low Tide | 3:14 PM(Tue 08 September) | 0.58 ft (0.18 m) |
| High Tide | 9:34 PM(Tue 08 September) | 10.43 ft (3.18 m) |
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Tide Times for Portland, Casco Bay: Wednesday 09 September 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| Low Tide | 3:59 AM(Wed 09 September) | -0.36 ft (-0.11 m) |
| High Tide | 10:13 AM(Wed 09 September) | 9.43 ft (2.87 m) |
| Low Tide | 4:12 PM(Wed 09 September) | 0.14 ft (0.04 m) |
| High Tide | 10:29 PM(Wed 09 September) | 10.64 ft (3.24 m) |
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Tide Times for Portland, Casco Bay: Thursday 10 September 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| Low Tide | 4:50 AM(Thu 10 September) | -0.58 ft (-0.18 m) |
| High Tide | 11:04 AM(Thu 10 September) | 9.86 ft (3.01 m) |
| Low Tide | 5:05 PM(Thu 10 September) | -0.22 ft (-0.07 m) |
| High Tide | 11:22 PM(Thu 10 September) | 10.69 ft (3.26 m) |
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Tide Times for Portland, Casco Bay: Friday 11 September 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| Low Tide | 5:37 AM(Fri 11 September) | -0.63 ft (-0.19 m) |
| High Tide | 11:51 AM(Fri 11 September) | 10.16 ft (3.1 m) |
| Low Tide | 5:56 PM(Fri 11 September) | -0.45 ft (-0.14 m) |
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Tide Times for Portland, Casco Bay: Saturday 12 September 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| High Tide | 00:11 AM(Sat 12 September) | 10.56 ft (3.22 m) |
| Low Tide | 6:22 AM(Sat 12 September) | -0.51 ft (-0.16 m) |
| High Tide | 12:35 PM(Sat 12 September) | 10.31 ft (3.14 m) |
| Low Tide | 6:44 PM(Sat 12 September) | -0.51 ft (-0.16 m) |
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Tide Times for Portland, Casco Bay: Sunday 13 September 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| High Tide | 00:58 AM(Sun 13 September) | 10.27 ft (3.13 m) |
| Low Tide | 7:04 AM(Sun 13 September) | -0.22 ft (-0.07 m) |
| High Tide | 1:17 PM(Sun 13 September) | 10.29 ft (3.14 m) |
| Low Tide | 7:29 PM(Sun 13 September) | -0.39 ft (-0.12 m) |
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Tide Times for Portland, Casco Bay: Monday 14 September 2026
| Tide | Time (EDT)& Date | Height |
|---|---|---|
| High Tide | 1:42 AM(Mon 14 September) | 9.84 ft (3.0 m) |
| Low Tide | 7:44 AM(Mon 14 September) | 0.21 ft (0.06 m) |
| High Tide | 1:58 PM(Mon 14 September) | 10.1 ft (3.08 m) |
| Low Tide | 8:14 PM(Mon 14 September) | -0.1 ft (-0.03 m) |
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