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Marine Weather and Tide Forecast for Belmont, CA

April 19, 2025 2:17 AM PDT (09:17 UTC) Change Location
Sunrise 6:26 AM   Sunset 7:49 PM
Moonrise 12:39 AM   Moonset 9:46 AM 
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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
PZZ531 San Francisco Bay South Of The Bay Bridge- 836 Pm Pdt Fri Apr 18 2025

Tonight - W wind 5 to 10 kt, becoming sw after midnight, then becoming light and variable late. Waves around 2 ft or less.

Sat - SW wind around 5 kt, veering to W in the afternoon. Waves around 2 ft or less.

Sat night - W wind 5 to 10 kt. Waves around 2 ft or less.

Sun - SW wind around 5 kt. Waves around 2 ft or less.

Sun night - SW wind 5 to 10 kt. Waves around 2 ft or less.

Mon - Light and variable winds, becoming W around 5 kt in the afternoon. Waves around 2 ft or less.

Mon night - W wind 5 to 10 kt, backing to sw after midnight. Waves around 2 ft or less.

Tue - SW wind around 5 kt, veering to W in the afternoon. Waves around 2 ft or less.

Tue night - W wind 10 to 15 kt, becoming sw 5 to 10 kt after midnight. Waves around 2 ft or less.

Wed - W wind 5 to 10 kt. Waves around 2 ft or less.

Wed night - W wind 10 to 15 kt. Waves around 2 ft or less.
PZZ500 836 Pm Pdt Fri Apr 18 2025

Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
northerly flow increases going into early Saturday, especially over the northern outer waters, as a weak cold front approaches from the north. The increasing winds will result in a building northerly fresh swell. Stronger northerly winds will last into the next week.

7 Day Forecast for Marine Location Near Belmont, CA
   
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Tide / Current for Smith Slough, San Francisco Bay, California
  
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Smith Slough
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Sat -- 01:38 AM PDT     Moonrise
Sat -- 04:47 AM PDT     7.13 feet High Tide
Sat -- 06:28 AM PDT     Sunrise
Sat -- 10:45 AM PDT     Moonset
Sat -- 12:50 PM PDT     -0.02 feet Low Tide
Sat -- 07:48 PM PDT     Sunset
Sat -- 08:26 PM PDT     6.03 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Smith Slough, San Francisco Bay, California does not exist in database. Press Edit above and select a valid nearby location.

Smith Slough, San Francisco Bay, California, Tide feet
12
am
3.6
1
am
4.1
2
am
5
3
am
6
4
am
6.9
5
am
7.1
6
am
6.8
7
am
6
8
am
4.8
9
am
3.4
10
am
2
11
am
0.8
12
pm
0.1
1
pm
-0
2
pm
0.4
3
pm
1.3
4
pm
2.5
5
pm
3.7
6
pm
4.8
7
pm
5.6
8
pm
6
9
pm
5.9
10
pm
5.3
11
pm
4.4

Tide / Current for San Mateo Bridge, South San Francisco Bay, California Current
  
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San Mateo Bridge
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Sat -- 01:39 AM PDT     Moonrise
Sat -- 02:40 AM PDT     0.58 knots Max Flood
Sat -- 05:16 AM PDT     -0.00 knots Slack
Sat -- 06:28 AM PDT     Sunrise
Sat -- 09:42 AM PDT     -1.36 knots Max Ebb
Sat -- 10:45 AM PDT     Moonset
Sat -- 01:23 PM PDT     0.00 knots Slack
Sat -- 04:21 PM PDT     1.13 knots Max Flood
Sat -- 07:48 PM PDT     Sunset
Sat -- 08:26 PM PDT     -0.00 knots Slack
Sat -- 10:33 PM PDT     -0.42 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, San Mateo Bridge, South San Francisco Bay, California Current does not exist in database. Press Edit above and select a valid nearby location.

San Mateo Bridge, South San Francisco Bay, California Current, knots
12
am
0.1
1
am
0.3
2
am
0.5
3
am
0.6
4
am
0.4
5
am
0.1
6
am
-0.2
7
am
-0.6
8
am
-1
9
am
-1.3
10
am
-1.3
11
am
-1
12
pm
-0.6
1
pm
-0.2
2
pm
0.3
3
pm
0.9
4
pm
1.1
5
pm
1.1
6
pm
0.9
7
pm
0.6
8
pm
0.2
9
pm
-0.2
10
pm
-0.4
11
pm
-0.4

Area Discussion for San Francisco/Monterey Bay Area, CA
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NOTE: mouseover dotted underlined text for definition
FXUS66 KMTR 190819 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 119 AM PDT Sat Apr 19 2025

New SYNOPSIS, SHORT TERM, LONG TERM

SYNOPSIS
Issued at 1201 AM PDT Sat Apr 19 2025

Fairly quiet weather is in store through the next several days, with a modest warming trend through early next week. A pattern change will bring cooler, cloudier conditions and a chance for light rain late next week.

SHORT TERM
(Today and tonight)
Issued at 1201 AM PDT Sat Apr 19 2025

The marine layer has compressed to around 500 feet, and the low stratus is confined mostly to the Bay Area coast. The marine layer is a little deeper across the central coast, where the stratus is filling the Salinas Valley. These clouds will clear in the afternoon and the temperatures will be near normal, similar to yesterday. A weak disturbance will arrive this evening, allowing the marine layer to deepen. As a result, cloud cover will be more extensive early Sunday morning. The offshore winds will also weaken as the gradient relaxes. This will allow more low-level moisture, and there could be patchy fog and even some drizzle across the region.

LONG TERM
(Sunday through Friday)
Issued at 1201 AM PDT Sat Apr 19 2025

The disturbance will quickly move through Sunday, allowing persistent zonal flow to become entrenched from Sunday afternoon through Tuesday. This will bring fair weather with mostly clear skies, gentle to moderate onshore winds, and high temperatures above seasonal normal. The typical warmer inland areas have a roughly even chance of breaking 80 degrees Monday. This warmer weather will cause minor HeatRisk, which can be hazardous to those extremely sensitive to the heat. Otherwise, this period will be pretty nice.

Ensembles are now in good agreement that the pattern will change mid week as a deep trough disrupts the subtropical high in the eastern Pacific. This system will bring a cooler air mass from the NW, causing surface temperatures to cool back below normal by Friday. The strength and timing of this trough is still uncertain, but it is looking more likely that some light rain will fall Friday-Saturday.

AVIATION
(06Z TAFS)
Issued at 1023 PM PDT Fri Apr 18 2025

Satellite shows low ceilings have pushed inland over Monterey Bay and along the coast causing IFR/MVFR conditions over KSNS, KMRY and KHAF. Most models show agreement of MVFR conditions building over most of the terminals (with the exception of KLVK) but there is some uncertainty as some offshore winds should keep things a bit on the drier side and keep the marine layer confined to the coast. VFR expected to return by 18Z for all terminals, but MVFR conditions are anticipated to return by Saturday night.

Vicinity of SFO...VFR currently, but low stratus has developed along the coast. Models vary with bringing MVFR ceilings in tonight.
Therefore, moderate confidence on MVFR building near 10Z, as there is a chance that a low SCT group may prevail through the night. If MVFR conditions occur, expect VFR near 17-18Z. MVFR ceiling will return by late Saturday night.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals.. MVFR/IFR conditions will prevail until 18- 19Z, where VFR is expected to return. Timing is a bit uncertain as conditions may clear closer to 20Z. MVFR conditions may prevail through most of KMRY TAF period. Expect both terminals to see a return of MVFR by 03Z.

MARINE
(Tonight through next Thursday)
Issued at 845 PM PDT Fri Apr 18 2025

Northerly flow increases going into early Saturday, especially over the northern outer waters, as a weak cold front approaches from the north. The increasing winds will result in a building northerly fresh swell. Stronger northerly winds will last into the next week.

MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory until 3 PM PDT Sunday for Pt Arena to Pt Reyes 10-60 NM.


Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
RTYC1 - 9414523 - Redwood City, CA 4 mi48 minS 2.9G2.9 54°F 65°F30.05
AAMC1 - 9414750 - Alameda, CA 17 mi48 minWSW 8G11 53°F 62°F30.06
LNDC1 19 mi48 minSW 4.1G5.1 53°F 30.06
OBXC1 20 mi48 min 52°F 50°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 20 mi48 minSW 4.1G7 52°F 30.06
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 20 mi48 minSSW 6G7
PXOC1 - 9414311 - San Francisco (Pier 1), CA 20 mi48 minWSW 1.9G8 52°F 30.03
PXSC1 21 mi48 min 53°F 51°F
FTPC1 - 9414290 - San Francisco, CA 22 mi48 minSW 4.1G7 52°F 30.06
46237 - San Francisco Bar, CA (142) 26 mi48 min 52°F 55°F4 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 27 mi48 minS 13G16 53°F 30.06
TIBC1 - Tiburon Pier, San Francisco Bay, CA 27 mi94 minW 4.1 51°F 30.0448°F
RCMC1 - 9414863 - Richmond, CA 29 mi48 minS 7G9.9 54°F 59°F30.04
1801593 31 mi108 minWNW 6G7.6 51°F 54°F4 ft30.0751°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 37 mi48 minWSW 9.9G12 55°F 30.02
MZXC1 - 9415102 - Martinez-Amorco CA 37 mi48 minW 6G7 57°F 61°F30.0351°F
UPBC1 37 mi48 minW 6G7
PCOC1 - 9415144 - Port Chicago, CA 39 mi48 minSSW 5.1G9.9 53°F 30.02
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 42 mi48 minW 8.9G13 60°F 29.99
46284 45 mi48 min 53°F 55°F2 ft
PRYC1 - 9415020 - Point Reyes, CA 49 mi48 min 30.05
SFXC1 - San Francisco Bay Reserve, CA 49 mi93 minWSW 6 54°F 29.9848°F


Wind History for Redwood City, CA
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Airport Reports
   
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Weather Map
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GEOS Local Image of Central West Coast  
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San Francisco Bay Area, CA,





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