Tide predictions · station local time
Portland, Maine
Friday, September 25, 2026 · NOAA station 8418150 · heights relative to Mean Lower Low Water (MLLW)
Today’s high and low tides
September tide data
Download all 116 saved predicted high and low tides for September 1–30, 2026. Feet are official NOAA values; metres are calculated from those feet values.
Download September CSVStation identity before planning
NOAA’s tide-prediction directory identifies Portland, Maine as station 8418150 at 43.658054° N, -70.244160° W.
NOAA identifies this as a reference prediction station. This page uses the saved station output directly and applies no additional offset.
The heights on this page are relative to Mean Lower Low Water, which is a tide datum rather than a land-elevation reading.
Use this station identity when comparing this chart with another nearby location: do not substitute a different station’s values.
How to use this chart
Each time shown is station local time.
Every listed height is tied to MLLW, so compare values only with charts using the same datum.
These numbers are predictions, not observed water levels.
Wind, atmospheric pressure, storms, and runoff can make actual water levels differ.
Check conditions at the shoreline before making a safety-critical decision.
Source: NOAA CO-OPS Tide Predictions and tide-prediction station directory, station 8418150. The official response supplied the foot values; metres are clearly labeled conversions.