Marine Weather and Tide Forecast for Trinidad, CA
![]() | Sunrise 6:08 AM Sunset 8:17 PM Moonrise 11:38 PM Moonset 7:23 AM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
PZZ450 Coastal Waters From Pt. St. George To Cape Mendocino Ca Out 10 Nm- 902 Pm Pdt Mon May 4 2026
Rest of tonight - SW wind 5 kt. Seas 6 ft. Wave detail: nw 6 ft at 13 seconds. Patchy dense fog.
Tue - NW wind 5 to 10 kt. Seas 5 ft. Wave detail: nw 2 ft at 8 seconds and W 5 ft at 12 seconds.
Tue night - NW wind 5 kt. Seas 5 ft. Wave detail: nw 3 ft at 8 seconds and W 4 ft at 12 seconds. Patchy dense fog.
Wed - NW wind 5 to 10 kt. Seas 5 ft. Wave detail: nw 3 ft at 8 seconds and W 4 ft at 14 seconds.
Wed night - N wind 5 to 10 kt. Seas 6 ft. Wave detail: nw 4 ft at 7 seconds and W 5 ft at 13 seconds.
Thu - NW wind 5 kt. Seas 5 ft. Wave detail: nw 4 ft at 7 seconds and W 5 ft at 12 seconds.
Thu night - NW wind 5 kt. Seas 5 ft. Wave detail: nw 2 ft at 7 seconds and nw 5 ft at 11 seconds.
Fri - NW wind 5 kt. Seas 4 ft. Wave detail: nw 2 ft at 7 seconds and nw 4 ft at 11 seconds.
Fri night - N wind 5 to 10 kt. Seas 4 ft. Wave detail: nw 4 ft at 6 seconds and sw 1 foot at 13 seconds.
Sat - N wind 10 to 15 kt. Seas 6 ft. Wave detail: nw 5 ft at 7 seconds and W 4 ft at 13 seconds.
Sat night - N wind 10 to 15 kt. Seas 8 ft. Wave detail: nw 7 ft at 8 seconds and W 4 ft at 12 seconds.
PZZ400 902 Pm Pdt Mon May 4 2026
Synopsis for northern california waters - Light southerly winds gradually turn northerly this evening and overnight. Winds increase to gentle to moderate breezes by Wednesday evening in the southern waters. Seas remain dominated by a decaying mid period northwest swell. An additional minor mid period west swell arrives Wednesday.
7 Day Forecast for Marine Location Near Trinidad, CA

NEW! Add second zone forecast
| Trinidad Harbor Click for Map Tue -- 01:37 AM PDT 6.09 feet High Tide Tue -- 06:09 AM PDT Sunrise Tue -- 08:22 AM PDT Moonset Tue -- 08:56 AM PDT -0.49 feet Low Tide Tue -- 03:54 PM PDT 4.62 feet High Tide Tue -- 08:17 PM PDT Sunset Tue -- 08:28 PM PDT 3.27 feet Low Tide Tide / Current data from XTide NOT FOR NAVIGATION |   |
Trinidad Harbor, California, Tide feet
| 12 am |
| 5.5 |
| 1 am |
| 6 |
| 2 am |
| 6 |
| 3 am |
| 5.6 |
| 4 am |
| 4.6 |
| 5 am |
| 3.3 |
| 6 am |
| 1.8 |
| 7 am |
| 0.6 |
| 8 am |
| -0.2 |
| 9 am |
| -0.5 |
| 10 am |
| -0.2 |
| 11 am |
| 0.7 |
| 12 pm |
| 1.8 |
| 1 pm |
| 2.9 |
| 2 pm |
| 3.9 |
| 3 pm |
| 4.5 |
| 4 pm |
| 4.6 |
| 5 pm |
| 4.4 |
| 6 pm |
| 4 |
| 7 pm |
| 3.6 |
| 8 pm |
| 3.3 |
| 9 pm |
| 3.3 |
| 10 pm |
| 3.7 |
| 11 pm |
| 4.2 |
Tide / Current for North Bay Channel at Samoa Channel (depth 15 ft), Humboldt Bay, California Current
| North Bay Channel at Samoa Channel (depth 15 ft) Click for Map Flood direction 15 true Ebb direction 196 true Tue -- 02:29 AM PDT -0.00 knots Slack Tue -- 05:10 AM PDT -1.93 knots Max Ebb Tue -- 06:10 AM PDT Sunrise Tue -- 08:24 AM PDT Moonset Tue -- 08:56 AM PDT 0.00 knots Slack Tue -- 01:28 PM PDT 1.06 knots Max Flood Tue -- 04:24 PM PDT -0.00 knots Slack Tue -- 06:13 PM PDT -0.40 knots Max Ebb Tue -- 08:17 PM PDT Sunset Tue -- 08:50 PM PDT 0.00 knots Slack Tide / Current data from XTide NOT FOR NAVIGATION |   |
North Bay Channel at Samoa Channel (depth 15 ft), Humboldt Bay, California Current, knots
| 12 am |
| 1.3 |
| 1 am |
| 1.1 |
| 2 am |
| 0.4 |
| 3 am |
| -0.5 |
| 4 am |
| -1.5 |
| 5 am |
| -1.9 |
| 6 am |
| -1.8 |
| 7 am |
| -1.2 |
| 8 am |
| -0.6 |
| 9 am |
| 0 |
| 10 am |
| 0.5 |
| 11 am |
| 0.8 |
| 12 pm |
| 1 |
| 1 pm |
| 1 |
| 2 pm |
| 1 |
| 3 pm |
| 0.7 |
| 4 pm |
| 0.2 |
| 5 pm |
| -0.2 |
| 6 pm |
| -0.4 |
| 7 pm |
| -0.4 |
| 8 pm |
| -0.2 |
| 9 pm |
| 0.1 |
| 10 pm |
| 0.5 |
| 11 pm |
| 0.9 |
FXUS66 KEKA 050707 AFDEKA
AREA FORECAST DISCUSSION National Weather Service Eureka CA 1207 AM PDT Tue May 5 2026
SYNOPSIS
Showers taper off early this morning. Ridging fills in behind the low with warmer temperatures and clearer skies by mid week.
DISCUSSION
A drier weather pattern starts today as showers taper off and move out of the area. High pressure will build through late week, bringing warmer than average temperatures but otherwise dry, seasonable, and mild weather. By Wednesday most interior valleys are forecast to be in the high 70s to low 80s. There is chance for the marine layer to finally clear out Wednesday, but this will likely return by late week. Confidence is increasing in much warmer interior temperatures this weekend into early next week as strong high pressure builds over the area. NBM is showing high probabilities for many of the interior valleys to see high temperatures over 90 by Sunday. Chances for over 95 are around 20- 40% for the warmest valleys. There is even a low-end chance (20%)
for high temperatures over 100 degrees by Monday of next week for the valleys of southern Mendocino and Lake.
AVIATION
(6Z TAFs).. MVFR to VFR conditions are being observed at the terminals. Generally IFR to MVFR ceilings are expected at all terminals through the early morning. Inland areas are expected to see lifting and clearing as drier conditions move in. Coastal areas may see some lifting and partial or temporary clearing, with MVFR to VFR conditions likely by the afternoon. Breezy north winds of around 10 kts or lower are possible this afternoon. JB
MARINE
Light southwesterly winds are expected to become more northwest and eventually north today. Winds will generally be light at around 5 to 15 kts. Seas are dominated by a northwest swell around 7 feet at 13 seconds. There is also a second wave group of around 3 feet at 8 seconds. The waves remain dominated by a 3 to 4 foot wave at 12 seconds and a 2 to 4 foot wave around 5 to 8 seconds. The winds are generally expected to remain around 5 to 15 kt out of the north through the workweek. Late in the week a system moving by to the north may briefly switch the winds to the west or southwest. Over the weekend, high pressure returns and near gale to gale force northerly winds are expected to return. The waves are expected to remain fairly small, around 3 to 5 feet at 10 seconds. A new swell is expected to build to 4 to 6 feet at 14 seconds on Wednesday. MKK
EKA WATCHES/WARNINGS/ADVISORIES
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
None.
AREA FORECAST DISCUSSION National Weather Service Eureka CA 1207 AM PDT Tue May 5 2026
SYNOPSIS
Showers taper off early this morning. Ridging fills in behind the low with warmer temperatures and clearer skies by mid week.
DISCUSSION
A drier weather pattern starts today as showers taper off and move out of the area. High pressure will build through late week, bringing warmer than average temperatures but otherwise dry, seasonable, and mild weather. By Wednesday most interior valleys are forecast to be in the high 70s to low 80s. There is chance for the marine layer to finally clear out Wednesday, but this will likely return by late week. Confidence is increasing in much warmer interior temperatures this weekend into early next week as strong high pressure builds over the area. NBM is showing high probabilities for many of the interior valleys to see high temperatures over 90 by Sunday. Chances for over 95 are around 20- 40% for the warmest valleys. There is even a low-end chance (20%)
for high temperatures over 100 degrees by Monday of next week for the valleys of southern Mendocino and Lake.
AVIATION
(6Z TAFs).. MVFR to VFR conditions are being observed at the terminals. Generally IFR to MVFR ceilings are expected at all terminals through the early morning. Inland areas are expected to see lifting and clearing as drier conditions move in. Coastal areas may see some lifting and partial or temporary clearing, with MVFR to VFR conditions likely by the afternoon. Breezy north winds of around 10 kts or lower are possible this afternoon. JB
MARINE
Light southwesterly winds are expected to become more northwest and eventually north today. Winds will generally be light at around 5 to 15 kts. Seas are dominated by a northwest swell around 7 feet at 13 seconds. There is also a second wave group of around 3 feet at 8 seconds. The waves remain dominated by a 3 to 4 foot wave at 12 seconds and a 2 to 4 foot wave around 5 to 8 seconds. The winds are generally expected to remain around 5 to 15 kt out of the north through the workweek. Late in the week a system moving by to the north may briefly switch the winds to the west or southwest. Over the weekend, high pressure returns and near gale to gale force northerly winds are expected to return. The waves are expected to remain fairly small, around 3 to 5 feet at 10 seconds. A new swell is expected to build to 4 to 6 feet at 14 seconds on Wednesday. MKK
EKA WATCHES/WARNINGS/ADVISORIES
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| TDPC1 | 1 mi | 59 min | 53°F | |||||
| 46244 - Humboldt Bay, North Spit, CA | 16 mi | 63 min | 54°F | 7 ft | ||||
| HBXC1 | 20 mi | 59 min | 52°F | |||||
| HBYC1 - 9418767 - North Spit, CA | 21 mi | 83 min | 52°F | 30.00 | ||||
| NJLC1 | 21 mi | 59 min | ENE 1.9G | 53°F | ||||
| 46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA | 32 mi | 39 min | SSW 3.9G | 54°F | 55°F | 6 ft | 29.99 | 54°F |
| CECC1 - 9419750 - Crescent City, CA | 47 mi | 59 min | SSE 4.1G | 55°F | 56°F | 30.01 |
Wind History for Crescent City, CA
toggle option: (graph/table)
Airport Reports
Link to 1 hour of 5 minute data for KACV
Terminal Aerodrome Forecast (TAF) for KACV
Wind History Graph: ACV
(wind in knots)GEOS Local Image of Central West Coast
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