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Marine Weather and Tide Forecast for Seaside, OR

April 30, 2025 8:45 AM PDT (15:45 UTC)
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Sunrise 5:57 AM   Sunset 8:20 PM
Moonrise 6:41 AM   Moonset 11:55 PM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

Marine Forecasts
   
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NOTE: Zones were updated 3/20/2025
PZZ250 Coastal Waters From Cape Shoalwater Wa To Cascade Head Or Out 10 Nm- 847 Am Pdt Tue Sep 13 2022

.dense fog advisory in effect until 10 pm pdt this evening - .

Rest of today - SW wind 5 kt. Wind waves sw 1 ft at 4 seconds. NW swell 2 ft at 9 seconds. Widespread dense fog in the morning. Areas of dense fog in the afternoon.

Tonight - NW wind to 5 kt. Wind waves nw 1 ft at 4 seconds. NW swell 2 ft at 9 seconds. Areas of dense fog in the evening. Patchy dense fog after midnight.

Wed - N wind 5 to 10 kt. Wind waves N 1 ft at 4 seconds. NW swell 2 ft at 9 seconds.

Wed night - N wind 5 to 10 kt. Wind waves N 2 ft at 4 seconds. NW swell 3 ft at 9 seconds.

Thu - NE wind to 5 kt, backing to nw in the afternoon. Wind waves ne 1 ft at 4 seconds, shifting to the nw at 4 seconds in the afternoon. NW swell 3 ft at 10 seconds.

Thu night - NW wind 5 kt. Wind waves N 1 ft at 4 seconds. NW swell 3 ft at 10 seconds.

Fri - NW wind 5 to 10 kt. Wind waves 2 ft. NW swell 4 ft.

Sat - NW wind 5 to 10 kt. Wind waves 2 ft. NW swell 4 ft.
PZZ200 240 Am Pdt Wed Apr 30 2025

Synopsis for the southern washington and northern oregon coast - High pressure remains in place through Friday, resulting in benign conditions with seas under 10 ft. Marginal small craft wind gusts up to 25 kt are expected over the southern waters late Wednesday afternoon and evening.

7 Day Forecast for Marine Location Near Seaside, OR
   
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Tide / Current for Seaside, 12th Avenue bridge, Necanicum River, Oregon
  
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Seaside
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Wed -- 02:07 AM PDT     6.37 feet High Tide
Wed -- 06:03 AM PDT     Sunrise
Wed -- 07:41 AM PDT     Moonrise
Wed -- 10:37 AM PDT     -0.77 feet Low Tide
Wed -- 04:03 PM PDT     4.52 feet High Tide
Wed -- 08:22 PM PDT     Sunset
Wed -- 10:19 PM PDT     1.00 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Seaside, 12th Avenue bridge, Necanicum River, Oregon does not exist in database. Press Edit above and select a valid nearby location.

Seaside, 12th Avenue bridge, Necanicum River, Oregon, Tide feet
12
am
3.9
1
am
5.5
2
am
6.4
3
am
6.2
4
am
5.6
5
am
4.6
6
am
3.3
7
am
2
8
am
0.8
9
am
-0.1
10
am
-0.7
11
am
-0.7
12
pm
0.1
1
pm
1.5
2
pm
3
3
pm
4.1
4
pm
4.5
5
pm
4.3
6
pm
3.7
7
pm
2.9
8
pm
2
9
pm
1.4
10
pm
1
11
pm
1.2

Tide / Current for Warrenton, Skipanon River, Columbia River, Oregon
  
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Warrenton
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Wed -- 03:00 AM PDT     9.60 feet High Tide
Wed -- 06:03 AM PDT     Sunrise
Wed -- 07:40 AM PDT     Moonrise
Wed -- 10:10 AM PDT     -1.59 feet Low Tide
Wed -- 04:46 PM PDT     7.09 feet High Tide
Wed -- 08:23 PM PDT     Sunset
Wed -- 09:53 PM PDT     2.84 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Warrenton, Skipanon River, Columbia River, Oregon does not exist in database. Press Edit above and select a valid nearby location.

Warrenton, Skipanon River, Columbia River, Oregon, Tide feet
12
am
5.9
1
am
7.8
2
am
9.1
3
am
9.6
4
am
9.1
5
am
7.5
6
am
5.2
7
am
2.8
8
am
0.7
9
am
-0.9
10
am
-1.6
11
am
-1.2
12
pm
0.1
1
pm
1.9
2
pm
4
3
pm
5.7
4
pm
6.8
5
pm
7.1
6
pm
6.4
7
pm
5.3
8
pm
4.1
9
pm
3.1
10
pm
2.8
11
pm
3.3

Area Discussion for Portland, OR
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FXUS66 KPQR 300944 AFDPQR

Area Forecast Discussion National Weather Service Portland OR 244 AM PDT Wed Apr 30 2025

SYNOPSIS
Warm and mostly dry conditions expected through Friday afternoon, with temperatures on Thursday peaking around 10-15 degrees above normal, with some locations, including the Portland Metro, potentially reaching into the mid-80s. A spring-time front will bring increasing chances for rain showers later Friday through Friday night, with temperatures cooling back into the 60s on Saturday. Expect temperatures to rise again into early next week as high pressure likely returns to the region.

SHORT TERM
Today through Friday...A few clouds linger through this morning, mainly along the coast and Cascades, as an upper shortwave trough slides east toward the northern Rockies. A more amplified upper level ridge will begin to slide over the Pacific Northwest, with clearing skies and dry weather expected through at least Thursday. Temperatures remain fairly mild today as northwest onshore flow persists. But, come the first day of May, temperatures are expected to spike as the ridge amplifies over the region, pushing 850 mb temps into the 13-15 C range. Weak offshore flow will also set up early Thursday as a surface thermal trough builds across the coast range. Marine winds push back onshore later in the day, except near the Portland Metro which will likely maintain easterly winds and see temperatures warm into the lower to mid 80s. Marine influences still look to keep coastal locations more mild by comparison, with temperatures topping out in the 60s to near 70.

The upper ridge will continue to shift eastward, and by early Friday, expect a southerly wind reversal ahead of the next weather system. An upper level trough offshore approaches the region later Friday with increasing moisture and low level westerly flow. Expect increasing clouds through the day, with increasing chances for light rain at the coast. Best chance for showers will likely be along the Cascades, increasing Friday afternoon through Friday evening. If skies remain fairly clear allowing surface warming to occur along the western slopes, pattern recognition suggests there is potential for thunderstorms near the crest, but chances remain slight, around 15% or less. Overall, the weather will likely remain fairly pleasant through much of the day, with increasing showers through the evening. Rainfall amounts through Friday night currently forecast to be around a tenth of an inch or less, except in the Cascades and foothills where there is around a 50% chance for wetting rains exceeding 0.25-0.50 inch. /DH

LONG TERM
Saturday through Tuesday...Somewhat cooler temperatures expected on Saturday as the upper level trough slides onto the west coast. Aside from showers along the Cascades and foothills, decreasing through the afternoon, much of the area should remain dry as the upper trough elongates and likely splits. By Sunday, WPC cluster analysis is in good agreement that the base of the tough develops into an upper low over southern California, while more upper ridging begins to nudge back over the Pacific NW into early next week. This will likely bring another warming trend to the area, pushing temperatures back into the 70s by Monday. Potential for more 80 degree days increases to around 20-30% through the middle of next week, while the probability of precipitation remains generally less than 20%. /DH

AVIATION
At 0930z Wednesday, surface weather observations depicted light and variable winds around 5 kt or less across northwest OR and southwest WA. Expect these conditions to continue through 12z Thursday.

In addition to the light winds, a cloud deck was evident along the coast from KAST to KONP with cigs around 3000 ft. Expect this cloud deck to lift to VFR while scattering out by 16z Wednesday.
Clear skies remain in place for inland areas this morning, aside from broken low clouds in the Cascades. These low clouds may briefly backbuild into KTTD and/or KUAO towards 12z Wednesday with cigs around 3000 ft or less, however the probability of this occurring is only at 10-30%. Even if this does occur, cloud cover would likely only last a few hours with clearing after 15-16z.
Given the most likely outcome is for the continuation of clear skies at both terminals, have decided to maintain VFR flight conditions in the 12z TAFs. Will maintain VFR conditions for KHIO, KSLE, KPDX and KEUG as well, as these terminal have even lower probabilities for low clouds to develop.

PDX AND APPROACHES...VFR conditions and mostly clear skies will continue through 12z Thursday with light northwest winds around 5 kt. 10% chance for a brief period of MVFR cigs around 3000 ft from 12-15z Wednesday. Have decided not to include this in the 12z TAF as the most likely outcome is the continuation of clear skies. -TK

MARINE
High pressure will remain in place through Friday, resulting in benign conditions with seas under 10 ft and winds generally under 20 kt. That said, northerly winds should briefly gust up to 20-25 kt late Wednesday afternoon and evening over the southern waters. Therefore, a marginal Small Craft Advisory has been issued for PZZ273 and PZZ253 during that time.

A Small Craft Advisory is also in effect for the Columbia River Bar from 4-10 AM PDT Wednesday. This is when a very strong ebb current will result in steep ebb chop with seas up to 8 ft at 8 to 10 seconds, results in rough bar conditions for small craft. -TK

PQR WATCHES/WARNINGS/ADVISORIES

OR...None.
WA...None.
PZ...Small Craft Advisory until 10 AM PDT this morning for PZZ210.

Small Craft Advisory from 4 PM this afternoon to 10 PM PDT this evening for PZZ253-273.


Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
46243 - Clatsop Spit, OR - 162 18 mi20 min 52°F4 ft
46278 31 mi46 min 49°F 53°F4 ft
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 32 mi36 minN 7.8G12 51°F30.29
46248 - Astoria Canyon, OR (179) 39 mi50 min 51°F6 ft
TOKW1 - 9440910 - Toke Point, WA 49 mi46 minE 4.1G5.1 46°F 54°F30.27


Wind History for Astoria, OR
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Airport Reports
   
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AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg

Weather Map
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GEOS Local Image of Pacific Northwest  
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Portland, OR,





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