Semiahmoo Spit today
- Beach day Not today Not a beach day · 0/10
- Tide now 7.3 ft ↑ rising · high 6:14 pm (9.3 ft)
- Best time to fish 5:10–6:30 pm good day · 8/10
- Waves · water 0.3 ft · 53 °F calm (rippled) · 2.4 s from the west
- Wind · air 7 mph · 48 °F from the SE, gusts 9 · mainly clear
- Sun 7:52 am–5:57 pm 10 h 4 min of daylight
- Moon 91% · 7:11 pm waning gibbous · rises at 7:11 pm
- Best time to dive 12:10–3:10 pm great day · 10/10
Today in Semiahmoo Spit there are high tides at 8:38 am (9.9 ft) and 6:14 pm (9.3 ft) and low tides at 1:05 am and 1:38 pm. Tide coefficient 90. Right now the tide is rising toward the high tide at 6:14 pm. The sun rises at 7:52 am and sets at 5:57 pm: 10 h 4 min of daylight. The moon is 91% illuminated (waning gibbous) and rises at 7:11 pm. Major solunar periods run from 1:54 am to 3:54 am and from 2:26 pm to 4:26 pm. The next spring tides arrive from October 26 to 28. The sea is calm (rippled), with 0.3 ft waves. There's a light breeze from the southeast (7 mph). Mainly clear, 48 °F.
Beach day in Semiahmoo Spit
Is it a beach day?
- Sun and clouds
- Onshore breeze (8 mph)
- Calm for swimming: 0.7 ft waves
- Low tide at 1:38 pm: more sand
- Feels like 46 °F: chilly for the beach
- Rain (0.06 in)
Today, hour by hour
- Swimming Calm · 0.7 ft
0.7 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
- Water 53 °F
Very cold: ease in and keep swims short.
- Sun & sunscreen UV 1 · SPF 15
Max UV 1 (low): SPF 15 sunscreen.
- Wind 8 mph
Onshore breeze (8 mph).
- Tide & sand 1:05 am
Low tide at 1:05 am and 1:38 pm: that's when there's the most sand. High tide at 8:38 am and 6:14 pm. Coefficient 90 (spring tides): little sand left at high tide.
We don't have data on jellyfish, sargassum or beach closures: ask the lifeguard or check with the local beach authority. How it works · The next 7 days
About Semiahmoo SpitThe beach
In Blaine, 1.7 mi from the center. Tides, weather and sun in Blaine →
- Restrooms
- Parking
Amenities from OpenStreetMap: some may be missing or out of date. See on OpenStreetMap · Fix on OpenStreetMap
Beaches near Semiahmoo Spit
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- White Rock Beach 2.6 mi · NW
- Restrooms
- Showers
- Parking
- Crescent Beach 6.0 mi · NW
- Restrooms
- Showers
- Parking
- Nudity allowed
Water quality: check the official beach advisories for Washington (Washington State Department of Ecology).
Named beaches within 6.2 mi, nearest first. Amenities from OpenStreetMap: some may be missing or out of date. View on OpenStreetMap · Add or fix on OpenStreetMap
Beaches and amenities: © OpenStreetMap contributors (ODbL).
Webcams near Semiahmoo Spit
Webcams provided by windy.com — add a webcam
Fishing in Semiahmoo Spit today
Best time to fish
Solunar activity today: high- High tide at 8:38 am, coefficient 90
- Sunrise at 7:52 am
- Falling pressure (−0.09 inHg in 24 h), almost no wind and calm sea (0.7 ft waves)
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 90 (spring tides)
Your day at a glance
The best window, 7:40 am to 8:40 am, combines the 8:38 am high tide, sunrise and falling pressure. Also good from 5:10 pm to 6:30 pm, with the 6:14 pm high tide and sunset. Also good from 12:10 am to 2:30 am, with the 1:05 am low tide, a major period, falling pressure, a light onshore breeze and some swell.
Species with the most records nearby: coho salmon, Chinook salmon and lingcod. October is one of the months when these are seen most: lingcod. What you can catch
Tides in Semiahmoo Spit
Today's high and low tides
- ▼ Low tide 1:05 am -2.1 ft
- ▲ High tide 8:38 am 9.9 ft · coef. 90
- ▼ Low tide 1:38 pm 6.8 ft
- ▲ Next high tide 6:14 pm 9.3 ft · coef. 88
↑ Rising The tide is rising. 3 h 20 min to high tide at 6:14 pm.
Tide coefficient 90 for the 8:38 am high tide and 88 for the 6:14 pm high tide. Spring tides. The water rises and falls 12.0 ft between the highest high and the lowest low: a large range for this place. 70 is an average tide here; 90 and above means spring tides; below 45, neap tides. What is the tide coefficient?
2026 extremes: the highest tide of the year is on January 4 (11.1 ft) and the lowest, on June 15 (-3.8 ft).
Mixed: two high and two low tides a day, but of quite different heights.
Heights above mean lower low water (MLLW), the zero of US nautical charts. Astronomical prediction: wind and air pressure can raise or lower the water by a few inches, and more in a storm. Not for navigation. MLLW
Tide coefficient and range in October
The biggest tides of the month came from October 26 to 28 (coefficient 92, 12.0 ft range). The smallest, from October 18 to 19 (coefficient 36, 7.8 ft).
Tide and solunar table · this week
| Day | Sun | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Coef. | Moon | Major periods | Activity |
|---|---|---|---|---|---|---|---|---|---|
| Today, Wed 28 | 7:52 am · 5:57 pm | Low tide 1:05 am · -2.1 ft | High tide 8:38 am · 9.9 ft | Low tide 1:38 pm · 6.8 ft | High tide 6:14 pm · 9.3 ft | Coef. 90 | 91% | Major periods 1:54 am · 2:26 pm | High |
| Thu 29 | 7:54 am · 5:55 pm | Low tide 1:50 am · -2.3 ft | High tide 9:38 am · 10.0 ft | Low tide 2:33 pm · 7.3 ft | High tide 6:49 pm · 9.0 ft | Coef. 84 | 83% | Major periods 2:58 am · 3:31 pm | High |
| Fri 30 | 7:56 am · 5:53 pm | Low tide 2:38 am · -2.2 ft | High tide 10:40 am · 9.9 ft | Low tide 3:39 pm · 7.5 ft | High tide 7:29 pm · 8.6 ft | Coef. 76 | 73% | Major periods 4:03 am · 4:34 pm | Medium |
| Sat 31 | 7:57 am · 5:52 pm | Low tide 3:32 am · -1.7 ft | High tide 11:42 am · 9.7 ft | Low tide 5:02 pm · 7.3 ft | High tide 8:21 pm · 7.9 ft | Coef. 67 | 62% | Major periods 5:05 am · 5:34 pm | Medium |
| Sun 1 | 6:59 am · 4:50 pm | Low tide 3:30 am · -1.0 ft | High tide 11:40 am · 9.6 ft | Low tide 5:36 pm · 6.6 ft | High tide 8:46 pm · 7.0 ft | Coef. 61 | Last quarter | Major periods 5:02 am · 5:29 pm | Medium |
| Mon 2 | 7:00 am · 4:48 pm | Low tide 4:33 am · 0.0 ft | High tide 12:30 pm · 9.5 ft | Low tide 6:57 pm · 5.5 ft | High tide 10:43 pm · 6.4 ft | Coef. 60 | 39% | Major periods 5:54 am · 6:19 pm | Medium |
| Tue 3 | 7:02 am · 4:47 pm | Low tide 5:38 am · 1.1 ft | High tide 1:11 pm · 9.4 ft | Low tide 7:48 pm · 4.1 ft | — | Coef. 63 | 29% | Major periods 6:42 am · 7:05 pm | Medium |
▲ high tide · ▼ low tide · heights above MLLW. Major periods: start time; they last 2 hours. Activity: based on the moon phase and the solunar periods.
Where this tide comes from
Tides from the Blaine station (NOAA), 0.9 mi from Semiahmoo Spit. Times and heights are its predictions.
Station data attribution: Slackwater database (https://github.com/openwatersio/slackwater-database)
The sea at Semiahmoo Spit
Sea stateSea state: calm (rippled)
The waves you may find
- Most commonMost common0.1 ft
- Significant0.3 ft
- Highest expectedHighest0.6 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 0.6 ft. Before heading out, expect waves of up to 0.6 ft.
Wind on the coast and offshore
Cross-onshore wind. The coast faces south and the wind comes in from the sea at an angle: a bit more surf at the shore and drift along the coast, toward land.
Wave height, next 7 daysWaves, next 7 days
Waves stay much the same all week. The biggest waves arrive on Wednesday 28: 1.9 ft with a period of 3 s, from the south-southwest (slight).
Water temperature
Water temperature →Water temperature changes how fish behave: in very cold or very warm water they feed less. The water cools over the next few days: about 51.7 °F by Tuesday 3.
Water warmer than normal for late October (+3.3 °F).
Satellite: NASA MUR (JPL MUR MEaSUREs, PO.DAAC), doi:10.5067/GHGMR-4FJ04. Sources and licenses
Water temperature →Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 2:55 pm (local time).
Nearest buoy
This is a real measurement of the sea, not a forecast. Data from station 46304. Data Source: Environment and Climate Change Canada (data license), via the NOAA National Data Buoy Center.
Diving in Semiahmoo Spit today
Diving and snorkeling today
Likely visibility: good- Slack water around low tide (1:38 pm): little current from 1:00 pm to 2:10 pm
- 0.3 ft swell at 2 s from the west-northwest: barely any surge
- Almost no wind
- 0.0 mph current toward the east, weak (model)
- Sun high: more light underwater
- Slack water today: low tide 1:05 am (12:50–1:20 am), high tide 8:38 am (8:10–9:10 am), low tide 1:38 pm (1:00–2:10 pm) and high tide 6:14 pm (5:40–6:40 pm)
- Likely visibility: good. The sea has been calm and there's been little rain. Based on the last 24 hours of data.
- Water at 53.1 °F: a 7 mm semi-dry suit, with hood, gloves and booties.
- Snorkeling: good, calm sea and light wind.
- Night dive: dark from 6:30 pm. Waning gibbous (91%), rising at 7:11 pm: a bright night.
Your diving day at a glance
The best window, 12:10 pm to 3:10 pm, combines slack water at low tide, little swell, light wind, weak current and the sun high. Also good from 8:00 am to 9:30 am, with slack water at high tide, little swell, light wind and weak current.
Slack water comes from the tide: in inlets, channels and between islands the water can keep running for an hour or two after. Ask the local dive shop.
Never dive alone and check with the local dive shop: this rating is a guide, not a substitute for a professional.
Dive sites, wrecks and dive shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Wreck 7.6 mi
- Birch Bay State Park 5.3 mi
- Boundary Bay Wildlife Management Area 7.2 mi
- Cherry Point Aquatic Reserve 8.7 mi
- Boundary Bay Regional Park 9.9 mi
Within 12 mi. Some may be missing or closed; marine reserves usually need a permit. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap
Wreck and reef positions are approximate and not for navigation; a wreck’s depth runs from the top of the hull to the seabed.
Sites: © OpenStreetMap contributors (ODbL). US wrecks: NOAA electronic navigational charts (ENC), a U.S. Government work; not for navigation.
Weather in Semiahmoo Spit
Now in Semiahmoo Spit
- Low / high
- 42 / 49 °F
- Rain
- 0.31 in · 71%
- Clouds
- 32%
- Humidity
- 88%
- Dew pointDew point
- 45 °F
- Visibility
- 8.9 mi
- UV indexUV
- 0 · low
- Air qualityAir
- Good · 34
- Saharan dust
- No
Pressure and fishing
- ↗ RisingRising Anglers say fish bite less for a while
- → SteadySteady · now Anglers expect normal activity
- ↘ FallingFalling Anglers say fish feed more before the change
Steady now (+0.01 inHg in 3 hours). It barely changes over the next 48 hours. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.
Today, hour by hourHour by hour
Bars: mean wind. Dashed line: gusts. Arrows point where the wind blows to.
| Time | 12:00 am | 3:00 am | 6:00 am | 9:00 am | 12:00 pm | 3:00 pm | 6:00 pm | 9:00 pm |
|---|---|---|---|---|---|---|---|---|
| Sky | Drizzle | Light drizzle | Mainly clear | Light drizzle | Light drizzle | Mainly clear | Light drizzle | Light drizzle |
| Temperature | 46° | 45° | 44° | 45° | 48° | 48° | 45° | 42° |
| Wind (mph) | 10 SSE | 3 SE | 3 NE | 2 SE | 4 SSE | 8 SE | 8 NE | 7 ENE |
| Gusts | 19 | 6 | 4 | 4 | 5 | 9 | 9 | 15 |
| Waves | 1.8 ft | 1.7 ft | 1.1 ft | 0.7 ft | 0.4 ft | 0.3 ft | 0.2 ft | 0.2 ft |
| Rain | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.02 in | 0.20 in | 0.00 in |
- 3:00 pm 48° 8 SE 0.3 ft
- 6:00 pm 45° 8 NE 0.2 ft
- 9:00 pm 42° 7 ENE 0.2 ft
- 12:00 am 42° 6 ENE 0.5 ft
- 3:00 am 43° 6 E 0.8 ft
- 6:00 am 43° 8 E 1.0 ft
- 9:00 am 42° 9 E 1.1 ft
- 12:00 pm 46° 9 E 1.1 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 28 | 42 / 49 °F | 10 mph ESE | 1.9 ft | 8:38 am · 6:14 pm | |
| Thu 29 | 42 / 49 °F | 10 mph E | 1.2 ft | 9:38 am · 6:49 pm | |
| Fri 30 | 38 / 48 °F | 6 mph ENE | 0.3 ft | 10:40 am · 7:29 pm | |
| Sat 31 | 37 / 50 °F | 5 mph NE | 0.5 ft | 11:42 am · 8:21 pm | |
| Sun 1 | 37 / 49 °F | 4 mph E | 0.6 ft | 11:40 am · 8:46 pm | |
| Mon 2 | 38 / 50 °F | 4 mph NE | 0.1 ft | 12:30 pm · 10:43 pm | |
| Tue 3 | 40 / 51 °F | 3 mph NNE | 0.3 ft | 1:11 pm | |
| Wed 4 | 39 / 52 °F | 2 mph NE | 0.4 ft | 12:42 am · 1:45 pm | |
| Thu 5 | 40 / 51 °F | 3 mph ESE | 1.2 ft | 2:19 am · 2:14 pm | |
| Fri 6 | 42 / 51 °F | 4 mph ESE | 2.4 ft | 3:35 am · 2:41 pm | |
| Sat 7 | 43 / 51 °F | 5 mph ESE | 2.6 ft | 4:37 am · 3:07 pm | |
| Sun 8 | 43 / 56 °F | 10 mph ESE | 2.1 ft | 5:30 am · 3:32 pm | |
| Mon 9 | 47 / 53 °F | 12 mph ENE | 1.6 ft | 6:17 am · 3:57 pm | |
| Tue 10 | 48 / 58 °F | 9 mph E | 0.9 ft | 7:01 am · 4:21 pm |
- Thu 29 Drizzle 42° / 49° 1.2 ft
- Fri 30 Heavy drizzle 38° / 48° 0.3 ft
- Sat 31 Partly cloudy 37° / 50° 0.5 ft
- Sun 1 Overcast 37° / 49° 0.6 ft
- Mon 2 Overcast 38° / 50° 0.1 ft
- Tue 3 Overcast 40° / 51° 0.3 ft
- Wed 4 Overcast 39° / 52° 0.4 ft
Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.
- The models They agree · high confidence for the next few days. See the models →
- Outlook Next few weeks, compared with normal: a bit warmer, normal rain and a slightly warmer sea. See the outlook →
- Normal Today, cooler than normal for late October (−5.2 °F; normal high: 54 °F). Climate by month →
Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 2:55 pm (local time).
The sun in Semiahmoo Spit
Sunrise and sunset
- First light 6:42 am
- Full dark 7:07 pm
- Civil dawn 7:19 am
- Civil dusk 6:30 pm
- Solar noon 12:55 pm (28° high)
- Daylight 10 h 4 min (−3 min)
- Evening golden hour 5:11 pm
- Full dark 7:07 pm
Golden hour and the day-night map
Today the sun is 92,351,537 mi away and looks 32′ 11″ across.
The moon in Semiahmoo Spit
Moon phase and position
Today the moon is 226,426 mi away and looks 32′ 47″ across.
Solunar periods
Today's activity: high- 1:54–3:54 am Major · the moon passes overhead · high activity
- 2:26–4:26 pm Major · the moon passes underfoot · high activity
- 11:08 am–12:08 pm Minor · moonset · medium activity
- 6:41–7:41 pm Minor · moonrise · medium activity
According to solunar theory, fish feed more when the moon passes overhead or underfoot (major periods, about 2 h) and when it rises or sets (minor periods, 1 h). It works best around new and full moon.
Upcoming moon phases
2026 moon calendar →- Last quarter Sun, Nov 1 · 12:29 pmNov 1 in 4 days
- New moon Sun, Nov 8 · 11:03 pmNov 8 in 11 days
- First quarter Tue, Nov 17 · 3:48 amNov 17 in 20 days
- Full moon Tue, Nov 24 · 6:54 amNov 24 in 27 days
Perigee on October 28, 226,426 mi away, coinciding with the spring tides from October 26 to 28: they will be stronger than usual.
Where to fish in Semiahmoo Spit
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- L 0.5 mi
- K 0.5 mi
- J 0.5 mi
- C 0.6 mi
- B 0.6 mi
- D 0.6 mi
- Boat ramp 1.4 mi
- Dakota Creek Kayak Launch 2.3 mi
- Firminger Boat Ramp 3.2 mi
- Semiahmoo Marina 0.6 mi
- Walsh Marina 1.0 mi
- Gibbs Fishing 7.2 mi
Within 9.3 mi. A spot may be missing or closed. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap
Spots: © OpenStreetMap contributors (ODbL) and Overture Maps.
Water depth
Very shallowVery shallow and flat: even 2.5 mi from shore the water is less than 16 ft deep.
From the shoreline out to sea, heading southeast.
How far from shore
- 16 ft deepnot within 2.5 mi
- 33 ft deepnot within 2.5 mi
- 66 ft deepnot within 2.5 mi
- 164 ft deepnot within 2.5 mi
For fishing, swimming and diving
- Shore fishing. Very shallow: the water doesn't reach 16 ft within 2.5 mi. Cast far from the beach, ideally around high tide.
- Swimming. A very gentle way in with plenty of shallow water, good for kids. At low tide the water can be far out.
- Diving. Shallow: the water doesn't reach 33 ft within 2.5 mi. For deeper dives, take a boat farther out.
Inside bays, estuaries and harbors the bottom changes a lot from spot to spot (channels and shoals): use this only as a rough guide. There is land ahead (an island, a headland or the far shore) 2.5 mi out. The profile is turned slightly from the coast so it does not run into an island or a headland.
Source: NOAA U.S. Coastal Relief Model (public domain), cells of about 300 ft; depth below mean sea level. For reference only: not for navigation or anchoring.
Nearest lighthouse
Semiahmoo Harbor Light 0.5 mi north
- Light
- Steady red light · F R
- Built
- 1905
Data from Wikidata. For reference only: not for navigation. Wikipedia · Wikidata · Sources and licenses
Tides near Semiahmoo SpitTides nearby
- Blaine1.7 mi
- Douglas2.4 mi
- White Rock2.6 mi
- Birch Bay4.9 mi
- Surrey8.6 mi
- Sunshine Hills11 mi
- Strawberry Hill11 mi
- Point Roberts13 mi
- Tsawwassen14 mi
- Delta14 mi
Semiahmoo Spit at a glance
- Beach. Coordinates: 48.985° N, 122.782° W.
- It is 97 mi north of Seattle, the main place in Washington. The sun rises 5 min later and sets 1 min earlier than in Seattle.
- In Blaine, 1.7 mi from the center.
- The nearest tide station, Blaine, is 0.9 mi to the northeast.
- Its coast faces south.
- Beaches and harbors nearby: Birch Bay Village Marina (3.4 mi).
Questions about Semiahmoo SpitQuestions
Where is Semiahmoo Spit?
In Blaine, 1.7 mi from the center, Washington (United States). The shore faces south.
What amenities does Semiahmoo Spit have?
According to OpenStreetMap: restrooms and parking. Some may be missing or out of date, so ask at the beach.
How clean is the water at Semiahmoo Spit?
There's no open yearly bathing water rating in the US. Each state and territory monitors its beaches and posts an advisory when swimming isn't safe: check the official beach advisories for Washington (Washington State Department of Ecology).
What time is high tide today in Semiahmoo Spit?
Today in Semiahmoo Spit there are high tides at 8:38 am (9.9 ft) and 6:14 pm (9.3 ft) and low tides at 1:05 am and 1:38 pm. Tide coefficient 90.
What time is sunset today in Semiahmoo Spit?
At 5:57 pm. There is light until the end of civil twilight, at 6:30 pm.
What time is sunrise tomorrow in Semiahmoo Spit?
At 7:54 am. First light comes at 6:44 am.
What phase is the moon today?
Waning gibbous, 91% illuminated. New moon on Sun, Nov 8 · 11:03 pm.
When are the next spring tides?
From October 26 to 28, together with the lunar perigee: they will be stronger than usual.
What are today's solunar periods?
Major 1:54–3:54 am, Minor 11:08 am–12:08 pm, Major 2:26–4:26 pm, Minor 6:41–7:41 pm. Today's activity is high.
What's the weather like today in Semiahmoo Spit?
Drizzle, from 42 °F to 49 °F, with a light breeze from the southeast (7 mph) and a 71% chance of rain.
How is the sea today in Semiahmoo Spit?
Calm (rippled) (Douglas 1): 0.3 ft waves with a period of 2.4 s from the west. The water is 53.2 °F.
When is the best time to visit Semiahmoo Spit?
The best time to visit Semiahmoo Spit is from July to August: highs of 74 °F, about 5 rainy days a month and 8 hours of sunshine a day.
Can I use this data for navigation?
No. These are predictions for fishing and leisure; for navigation, use the official publications.
Where this data comes from
Tide: NOAA station Blaine (public domain), via Slackwater database. Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).