Tides for Casco Bay, Portland (Open-Meteo model, about 8 km grid). Heights are relative to mean sea level.
Tide now↑ RisingSea level -5.5 ft · today's range 11.5 ft
Next high tide1:16 PMThursday · +4.3 ft
Next low tide7:42 PMThursday · -7.3 ft
Tide curve – next 3 days
HighLowNowTide table – 7 days
| Day | High tides | Low tides | Max waves |
|---|---|---|---|
| Today | 1:05 AM +2.8 ft1:16 PM +4.3 ft | 6:56 AM -6.2 ft7:42 PM -7.3 ft | 3.1 ft |
| Fri, Oct 30 | 1:58 AM +2.6 ft2:10 PM +4.1 ft | 7:48 AM -5.8 ft8:41 PM -7.0 ft | 3.1 ft |
| Sat, Oct 31 | 2:58 AM +2.0 ft3:12 PM +3.3 ft | 8:47 AM -5.8 ft9:42 PM -6.7 ft | 1.8 ft |
| Sun, Nov 1 | 3:04 AM +2.1 ft3:20 PM +3.0 ft | 8:57 AM -5.5 ft9:49 PM -6.4 ft | 1.1 ft |
| Mon, Nov 2 | 4:15 AM +2.0 ft4:30 PM +2.7 ft | 10:10 AM -5.2 ft10:56 PM -6.3 ft | 2.2 ft |
| Tue, Nov 3 | 5:23 AM +2.2 ft5:42 PM +3.1 ft | 11:25 AM -5.3 ft | 3.8 ft |
| Wed, Nov 4 | 6:22 AM +2.9 ft6:43 PM +3.0 ft | 12:00 AM -5.8 ft12:31 PM -5.4 ft | – |
Sea now
- Waves
- 1.8 ft
- Sea state
- Slight
- Swell
- 1.1 ft
- Wave period
- 5 s
- Water temperature
- 56 °F
- Moon
- Waning gibbous
The Atlantic and Pacific coasts usually have two high and two low tides a day (the Gulf of Mexico often has just one of each); the biggest ranges ("spring tides" and "king tides") come around new and full moon. A low tide can be below 0 because heights here are relative to mean sea level, not chart datum (MLLW) used in NOAA tide tables.
High tide combined with heavy rain, a nor'easter or a hurricane storm surge can flood low-lying coastal areas — check will it rain and the hurricane tracker.
Model data, not for navigation. For official predictions, refer to NOAA Tides & Currents (tidesandcurrents.noaa.gov).