Marine Weather and Tide Forecast for Southwest Harbor, ME
 | Sunrise 5:50 AM Sunset 7:20 PM Moonrise 4:45 AM Moonset 5:24 PM |
Marine Forecasts
NOTE: Zones were updated 3/20/2025. If your report is out of date, please click Edit
ANZ052 Intra Coastal Waters From Schoodic Point, Me To Stonington, Me- 708 Pm Edt Wed Apr 15 2026
Tonight - SE winds around 5 kt. Seas around 2 ft. Wave detail: S 2 ft at 7 seconds. Areas of fog. A chance of drizzle this evening. A chance of rain. A slight chance of drizzle after midnight. Vsby 1 nm or less.
Thu - E winds around 5 kt. Seas 1 to 2 ft. Wave detail: S 2 ft at 7 seconds. Widespread showers, mainly in the morning. Areas of fog in the morning, then patchy fog in the afternoon. Vsby 1 nm or less, increasing to 1 to 3 nm in the afternoon.
Thu night - E winds around 5 kt. Seas 1 to 2 ft. Wave detail: S 2 ft at 7 seconds. Showers. Patchy fog in the evening. Areas of fog after midnight. Vsby 1 nm or less.
Fri - NE winds 5 to 10 kt. Seas 1 to 2 ft. Wave detail: S 2 ft at 7 seconds. Areas of fog in the morning. Showers likely, mainly in the morning with vsby 1 nm or less.
Fri night - NE winds 5 to 10 kt. Seas around 2 ft. Wave detail: S 2 ft at 7 seconds.
Sat - E winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: S 2 ft at 8 seconds and E 1 foot at 4 seconds. Patchy fog in the morning with vsby 1 nm or less.
Sat night - SE winds 5 to 10 kt. Seas 1 to 2 ft. A chance of rain after midnight.
Sun - S winds 5 to 10 kt, becoming sw 10 to 15 kt in the afternoon. Seas 2 to 3 ft. A chance of rain in the morning, then rain likely in the afternoon.
Sun night - W winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 4 ft. Rain likely in the evening, then a chance of rain and snow after midnight.
Mon - W winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. A chance of snow and rain in the morning.
Mon night - NW winds 10 to 15 kt. Seas 2 to 3 ft.
ANZ005 708 Pm Edt Wed Apr 15 2026
Synopsis for eastport me to stonington me out 25 nm - Weak low pressure systems will cross the area Thursday into Thursday night and again Sunday into Sunday night. Colder and drier weather will move in early next week.
7 Day Forecast for Marine Location Near Southwest Harbor CDP, ME
NEW! Add second zone forecast
| Bass Harbor Click for Map Wed -- 03:04 AM EDT 0.34 feet Low Tide Wed -- 04:44 AM EDT Moonrise Wed -- 05:49 AM EDT Sunrise Wed -- 09:44 AM EDT 10.25 feet High Tide Wed -- 03:25 PM EDT 0.07 feet Low Tide Wed -- 05:23 PM EDT Moonset Wed -- 07:17 PM EDT Sunset Wed -- 10:05 PM EDT 10.66 feet High Tide Tide / Current data from XTide NOT FOR NAVIGATION |
Bass Harbor, Mount Desert Island, Maine, Tide feet
| 12 am |
| 5.7 |
| 1 am |
| 3.1 |
| 2 am |
| 1.1 |
| 3 am |
| 0.3 |
| 4 am |
| 0.8 |
| 5 am |
| 2.2 |
| 6 am |
| 4.4 |
| 7 am |
| 6.7 |
| 8 am |
| 8.7 |
| 9 am |
| 10 |
| 10 am |
| 10.2 |
| 11 am |
| 9.1 |
| 12 pm |
| 6.8 |
| 1 pm |
| 3.9 |
| 2 pm |
| 1.5 |
| 3 pm |
| 0.2 |
| 4 pm |
| 0.3 |
| 5 pm |
| 1.4 |
| 6 pm |
| 3.5 |
| 7 pm |
| 6 |
| 8 pm |
| 8.3 |
| 9 pm |
| 10 |
| 10 pm |
| 10.7 |
| 11 pm |
| 10 |
| Mackerel Cove Click for Map Wed -- 03:37 AM EDT 0.40 feet Low Tide Wed -- 04:45 AM EDT Moonrise Wed -- 05:50 AM EDT Sunrise Wed -- 09:47 AM EDT 10.65 feet High Tide Wed -- 03:58 PM EDT -0.04 feet Low Tide Wed -- 05:23 PM EDT Moonset Wed -- 07:18 PM EDT Sunset Wed -- 10:11 PM EDT 11.15 feet High Tide Tide / Current data from XTide NOT FOR NAVIGATION |
Mackerel Cove, Swans Island, Blue Hill Bay, Maine, Tide feet
| 12 am |
| 6.7 |
| 1 am |
| 4.2 |
| 2 am |
| 1.9 |
| 3 am |
| 0.6 |
| 4 am |
| 0.5 |
| 5 am |
| 1.5 |
| 6 am |
| 3.6 |
| 7 am |
| 6.4 |
| 8 am |
| 8.8 |
| 9 am |
| 10.3 |
| 10 am |
| 10.6 |
| 11 am |
| 9.7 |
| 12 pm |
| 7.7 |
| 1 pm |
| 5 |
| 2 pm |
| 2.4 |
| 3 pm |
| 0.6 |
| 4 pm |
| -0 |
| 5 pm |
| 0.6 |
| 6 pm |
| 2.5 |
| 7 pm |
| 5.3 |
| 8 pm |
| 8.2 |
| 9 pm |
| 10.3 |
| 10 pm |
| 11.1 |
| 11 pm |
| 10.7 |
FXUS61 KCAR 151818 AFDCAR
Area Forecast Discussion National Weather Service Caribou ME 218 PM EDT Wed Apr 15 2026
WHAT HAS CHANGED
-No significant changes.
KEY MESSAGES
1) Below freezing temperatures return Sunday night through the middle of the week. Snow showers with light accumulation is possible Sunday night.
2) Locally dense fog is possible along the Downeast Coast late tonight into Thursday morning.
DISCUSSION
KEY MESSAGE 1...Below freezing temperatures return Sunday night through the middle of the week. Snow showers with light accumulation is possible Sunday night.
KEY MESSAGE 1 DESCRIPTION...
A large low pressure system developing in the northern Great Plain is expected to track towards the Great Lakes Saturday, then move into Canada Sunday. The associated cold front is expected to sweep through the region Sunday. Sunday morning should begin with rain and continue through the afternoon. The cold front should exit the area by early Sunday night, switching winds to NW flow. Ample cold air advection is expected to drop temps to below freezing after midnight on Sunday night. This should switch any remain precip to snow. By Monday, temps will increase in the south, switching snow back to rain, but snow should remain in the north. Cold temps should remain to the middle of the week.
KEY MESSAGE 2...Locally dense fog is possible along the Downeast Coast late tonight into Thursday morning.
KEY MESSAGE 2 DESCRIPTION...
Moist air mass remains in place overnight through Thursday. This will result in the possibility of some locally dense fog developing late tonight into Thursday morning.
AVIATION /18Z WEDNESDAY THROUGH MONDAY/
Rest of this afternoon...IFR/LIFR at the Aroostook terminals, with MVFR KBGR/KBHB. Light variable wind.
Tonight...IFR/LIFR in low ceilings, patchy fog, and scattered showers. Light SE wind.
Thursday through Thursday night...IFR/LIFR in low ceilings and scattered showers. Improvement to MVFR possible KBGR/KBHB for a brief period Thursday afternoon. Light SE wind.
Friday...AM IFR/LIFR due to RA/FG becoming MVFR during the day with VFR possible late day. N-NE winds around 5kt. Fri night expecting possible BR/FG and VCSH especially at southern terms.
NE winds 5kt or less.
Saturday...VFR. MVFR cigs possible especially at BGR and BHB. SE winds 5-15kt.
Sunday.. MVFR/IFR with RA likely. S winds 10-15kt gusting to 20kt shifting SW late day.
Monday...VFR. NW winds 5-15 kts.
MARINE
Winds/seas remain below SCA levels through Thursday night.
Visibility will fall to 1 NM or less at times tonight through Thursday morning in fog.
Winds/seas expected to remain below SCA conditions through Sunday. Late Sunday night into Monday is the next chance of SCA winds/seas. Rain/fog may reduce vsby Friday then again on Sunday.
CAR WATCHES/WARNINGS/ADVISORIES
ME...None.
MARINE...None.
Area Forecast Discussion National Weather Service Caribou ME 218 PM EDT Wed Apr 15 2026
WHAT HAS CHANGED
-No significant changes.
KEY MESSAGES
1) Below freezing temperatures return Sunday night through the middle of the week. Snow showers with light accumulation is possible Sunday night.
2) Locally dense fog is possible along the Downeast Coast late tonight into Thursday morning.
DISCUSSION
KEY MESSAGE 1...Below freezing temperatures return Sunday night through the middle of the week. Snow showers with light accumulation is possible Sunday night.
KEY MESSAGE 1 DESCRIPTION...
A large low pressure system developing in the northern Great Plain is expected to track towards the Great Lakes Saturday, then move into Canada Sunday. The associated cold front is expected to sweep through the region Sunday. Sunday morning should begin with rain and continue through the afternoon. The cold front should exit the area by early Sunday night, switching winds to NW flow. Ample cold air advection is expected to drop temps to below freezing after midnight on Sunday night. This should switch any remain precip to snow. By Monday, temps will increase in the south, switching snow back to rain, but snow should remain in the north. Cold temps should remain to the middle of the week.
KEY MESSAGE 2...Locally dense fog is possible along the Downeast Coast late tonight into Thursday morning.
KEY MESSAGE 2 DESCRIPTION...
Moist air mass remains in place overnight through Thursday. This will result in the possibility of some locally dense fog developing late tonight into Thursday morning.
AVIATION /18Z WEDNESDAY THROUGH MONDAY/
Rest of this afternoon...IFR/LIFR at the Aroostook terminals, with MVFR KBGR/KBHB. Light variable wind.
Tonight...IFR/LIFR in low ceilings, patchy fog, and scattered showers. Light SE wind.
Thursday through Thursday night...IFR/LIFR in low ceilings and scattered showers. Improvement to MVFR possible KBGR/KBHB for a brief period Thursday afternoon. Light SE wind.
Friday...AM IFR/LIFR due to RA/FG becoming MVFR during the day with VFR possible late day. N-NE winds around 5kt. Fri night expecting possible BR/FG and VCSH especially at southern terms.
NE winds 5kt or less.
Saturday...VFR. MVFR cigs possible especially at BGR and BHB. SE winds 5-15kt.
Sunday.. MVFR/IFR with RA likely. S winds 10-15kt gusting to 20kt shifting SW late day.
Monday...VFR. NW winds 5-15 kts.
MARINE
Winds/seas remain below SCA levels through Thursday night.
Visibility will fall to 1 NM or less at times tonight through Thursday morning in fog.
Winds/seas expected to remain below SCA conditions through Sunday. Late Sunday night into Monday is the next chance of SCA winds/seas. Rain/fog may reduce vsby Friday then again on Sunday.
CAR WATCHES/WARNINGS/ADVISORIES
ME...None.
MARINE...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| ATGM1 - 8413320 - Bar Harbor, ME | 13 mi | 46 min | SSE 6G | 48°F | 40°F | 29.93 | ||
| 44034 - Buoy I0103 - Eastern Maine Shelf | 16 mi | 106 min | SW 5.8G | 42°F | ||||
| MDRM1 - Mt Desert Rock, ME | 22 mi | 76 min | ESE 7G | 45°F | 29.94 | |||
| MISM1 - Matinicus Rock, ME | 41 mi | 46 min | S 2.9G | 47°F | 29.96 | 47°F |
Wind History for Bar Harbor, ME
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Link to 1 hour of 5 minute data for KBHB
Terminal Aerodrome Forecast (TAF) for KBHB
Wind History Graph: BHB
(wind in knots)
GEOS Local Image of Northeast
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Portland, ME,
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