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4NM ESE Portland ME

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 3:45 pm EDT May 18, 2026
Forecast Valid: 12am EDT May 19, 2026-6pm EDT May 25, 2026

Overnight

Variable winds 5 kt or less. Patchy fog after 2am. Seas around 1 ft.

Tuesday

SSW wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. A slight chance of showers after 5pm. Patchy fog before 7am. Seas 1 to 2 ft.

Tuesday Night

SW wind 10 to 15 kt. A slight chance of showers and thunderstorms before 9pm. Seas around 2 ft.

Wednesday

SW wind around 15 kt, with gusts as high as 25 kt. A chance of showers after 1pm. Seas around 2 ft.

Wednesday Night

NNW wind 10 to 15 kt. Partly cloudy. Seas 1 to 2 ft.

Thursday

NNW wind around 10 kt becoming WNW in the afternoon. Sunny. Seas around 1 ft.

Thursday Night

Variable winds 5 kt or less. Mostly clear. Seas around 1 ft.

Friday

NW wind 5 to 8 kt becoming SSW 10 to 15 kt in the afternoon. Mostly sunny. Seas around 1 ft.

Friday Night

SSW wind 7 to 10 kt becoming WSW 5 to 8 kt after midnight. Mostly cloudy. Seas around 1 ft.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.