Question 1

Which station reports water temperature for Portland, Maine?

Accepted Answer

NOAA CO-OPS station 8418150 is the Portland Harbor reference, and its current official sensor inventory includes water temperature.

Question 2

Is the Portland Harbor temperature the same as every nearby beach?

Accepted Answer

No. The observation belongs to the station location and time. Beach, cove, river-influenced and offshore waters can differ.

Question 3

Is a tide prediction a live water-level observation?

Accepted Answer

No. A tide prediction is an astronomical estimate, while an observation is a time-stamped measurement. Check the product label before comparing them.

Question 4

Does high tide mean slack current in Portland Harbor?

Accepted Answer

Not necessarily. High water and tidal-current timing are different products, and slack current can occur at a different time.

Question 5

What should I recheck before using a Portland ocean-temperature value?

Accepted Answer

Recheck the station ID, observation time, units, official forecast and alerts, and whether Portland Harbor represents the exact water you plan to visit.