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South West · UK tide gauge

St Marys tide times

FRIDAY 11 SEPTEMBER 2026

Next high tide at St Marys is at 17:00 (5.8 m, 4hr 13mins). Next low tide 12:00 (0.6 m, 23hr 13mins).

St Marys tide times today · Fri 11 Sep

High and low tide times at St Marys on Friday 11 September 2026
Tide Time (UK) Height
↑ High 05:00 5.6 m
↓ Low 11:00 0.7 m
↑ High 17:00 5.8 m

Today's tide range at St Marys: 5.1 m

Fishing conditions at St Marys

The best fishing window at St Marys over the next 10 days is Afternoon today, scoring 100 out of 100 from wind, tide movement, pressure and temperature.

How that 100 is reached

Baseline Every spot starts here +16
Wind NW 7 mph +40
Tide 5.1 m range +25
Temperature 17°C high +20
Pressure Steady +3

Today, window by window

Night

83

00:00-06:00

Morning

96

06:00-12:00

Afternoon

100

12:00-18:00

Evening

100

18:00-24:00

UK fishing conditions map →

Best fishing times today · St Marys

Solunar feeding periods. Major periods (moon overhead and underfoot) are the strongest; minor periods fall around moonrise and moonset.

Major period

00:30 to 02:30

Minor period

06:52 to 07:52

Major period

12:40 to 14:40

Minor period

19:18 to 20:18

Tide curve · weather forecast + astronomical prediction · scroll to scrub

HARMONIC ANALYSIS YESTERDAY TODAY TOMORROW SUN 13 SEP MON 14 SEP TUE 15 SEP WED 16 SEP THU 17 SEP FRI 18 SEP SAT 19 SEP SUN 20 SEP MON 21 SEP TUE 22 SEP WED 23 SEP THU 24 SEP FRI 25 SEP SAT 26 SEP SUN 27 SEP MON 28 SEP TUE 29 SEP WED 30 SEP THU 1 OCT FRI 2 OCT SAT 3 OCT SUN 4 OCT MON 5 OCT NOW 18:00 · 2.1m 00:00 · 4.2m 06:00 · 2.2m 12:30 · 4.3m 18:30 · 2.1m 01:00 · 4.2m 07:00 · 2.2m 13:30 · 4.3m 19:30 · 2.1m 02:00 · 4.2m 08:00 · 2.1m 14:00 · 4.4m 20:30 · 2.0m 02:30 · 4.3m 09:00 · 2.0m 15:00 · 4.6m 21:30 · 1.8m 03:30 · 4.5m 09:30 · 1.8m 16:00 · 4.8m 22:00 · 1.6m 04:00 · 4.7m 10:30 · 1.6m 16:30 · 5.0m 23:00 · 1.5m 05:00 · 4.9m 11:00 · 1.4m 17:00 · 5.1m 23:30 · 1.3m 05:30 · 5.1m 12:00 · 1.3m 18:00 · 5.3m 00:30 · 1.2m 06:30 · 5.2m 12:30 · 1.1m 18:30 · 5.4m 01:00 · 1.1m 07:00 · 5.3m 13:30 · 1.1m 19:30 · 5.4m 02:00 · 1.1m 08:00 · 5.3m 14:30 · 1.0m 20:00 · 5.4m 02:30 · 1.1m 08:30 · 5.3m 15:00 · 1.1m 21:00 · 5.3m 03:30 · 1.2m 09:30 · 5.2m 16:00 · 1.2m 22:00 · 5.1m 04:30 · 1.3m 10:30 · 5.2m 17:00 · 1.2m 23:00 · 5.0m 05:30 · 1.4m 11:30 · 5.1m 18:00 · 1.3m 00:00 · 4.9m 06:30 · 1.5m 18:00 · 5.7m 00:00 · 0.7m 06:00 · 5.6m 12:00 · 0.7m 18:00 · 5.8m 01:00 · 0.5m 07:00 · 5.6m 13:00 · 0.6m 19:00 · 5.9m 01:00 · 0.6m 07:00 · 5.6m 14:00 · 0.8m 19:00 · 5.7m 02:00 · 0.7m 08:00 · 5.6m 14:00 · 0.9m 20:00 · 5.6m 02:00 · 1.1m 08:00 · 5.4m 15:00 · 1.1m 21:00 · 5.1m 03:00 · 1.2m 09:00 · 5.0m 15:00 · 1.4m 21:00 · 4.9m 04:00 · 1.7m 10:00 · 4.8m 16:00 · 1.8m 22:00 · 4.6m 04:00 · 2.0m 10:00 · 4.5m 17:00 · 2.1m 23:00 · 4.3m 05:00 · 2.3m 11:00 · 4.2m
Past Forecast Now Astronomical (no weather)

Prediction lines are astronomical only: they extend past the weather forecast and do not include storm surge, wind or barometric effects.

Heights calibrated to the live UK Environment Agency gauge where available, otherwise relative to local chart datum.

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Day-by-day breakdown

Yesterday plus the next 9 days of high and low tides, covering the full Open-Meteo tide-model horizon.

Yesterday

range 4.80 m

↑ HIGH 04:00 5.36 m
↓ LOW 11:00 0.94 m
↑ HIGH 17:00 5.74 m

Today

range 5.10 m

↑ HIGH 05:00 5.56 m
↓ LOW 11:00 0.71 m
↑ HIGH 17:00 5.81 m

Tomorrow

range 5.28 m

↑ HIGH 06:00 5.63 m
↓ LOW 12:00 0.59 m
↑ HIGH 18:00 5.87 m

Sunday 13 Sep

range 4.97 m

↑ HIGH 06:00 5.63 m
↓ LOW 13:00 0.75 m
↑ HIGH 18:00 5.72 m

Monday 14 Sep

range 4.88 m

↓ LOW 01:00 0.74 m
↑ HIGH 07:00 5.56 m
↓ LOW 13:00 0.94 m
↑ HIGH 19:00 5.62 m

Tuesday 15 Sep

range 4.23 m

↓ LOW 01:00 1.14 m
↑ HIGH 07:00 5.37 m
↓ LOW 14:00 1.14 m
↑ HIGH 20:00 5.13 m

Wednesday 16 Sep

range 3.82 m

↓ LOW 02:00 1.21 m
↑ HIGH 08:00 5.03 m
↓ LOW 14:00 1.40 m
↑ HIGH 20:00 4.91 m

Thursday 17 Sep

range 3.07 m

↓ LOW 03:00 1.70 m
↑ HIGH 09:00 4.77 m
↓ LOW 15:00 1.76 m
↑ HIGH 21:00 4.58 m

Friday 18 Sep

range 2.55 m

↓ LOW 03:00 1.97 m
↑ HIGH 09:00 4.52 m
↓ LOW 16:00 2.14 m
↑ HIGH 22:00 4.26 m

Saturday 19 Sep

range 1.93 m

↓ LOW 04:00 2.27 m
↑ HIGH 10:00 4.20 m
↓ LOW 17:00 2.37 m

Tide data from the UK Environment Agency, refreshed at most every 30 minutes. For navigation use, always cross-check official Admiralty tables.

About tides at St Marys

St Marys sits on the South West coast and follows the standard semi-diurnal tidal pattern of the British Isles - two high tides and two low tides every 24 hours and 50 minutes, with each successive high arriving about 12 hours and 25 minutes after the last. Tide range at St Marys varies between spring tides (around new and full moon, when the Sun and Moon's gravity align for the biggest range) and neap tides (around the first and last quarter, when their forces partly cancel).

The live tide-height readings on this page come from the UK Environment Agency tide gauge network: actual sensor data, not an estimate. The 10-day forecast that follows is generated by Open-Meteo's ocean model and is calibrated each hour to the latest EA gauge reading at St Marys so the numbers match what you'd see on a printed tide table. Heights are quoted in metres above local chart datum, which is the convention used in UK Admiralty tide tables.

Whether you're sea fishing, surfing, kayaking, diving, kite-flying or just walking the dog along the beach, knowing the tide times for St Marys helps you plan around safe access, the run of the current and the productive feeding windows in either side of a tide change.

Anglers fishing the South West coast near St Marys typically cross-check the closest neighbouring gauges: Newlyn tide times (~37 miles along the coast), and Penzance tide times (~37 miles along the coast) . Calibrated heights are pulled from the live EA gauge at 49.918°N 6.317°W.

St Marys tide times: frequently asked questions

When is the next high tide at St Marys?

The next high tide at St Marys is at 17:00 on Friday 11 September, reaching 5.8 metres. Heights are calibrated to the live UK Environment Agency tide gauge.

When is the next low tide at St Marys?

The next low tide at St Marys is at 12:00 on Saturday 12 September, dropping to 0.6 metres.

What time is high tide at St Marys today?

On Friday 11 September 2026, 2 high tides at 05:00 (5.6m) and 17:00 (5.8m).

What time is low tide at St Marys today?

On Friday 11 September 2026, 1 low tide at 11:00 (0.7m).

What is the tide range at St Marys?

Today's tide range at St Marys is approximately 5.1 metres between low and high water. Spring tides typically run higher and neap tides lower; see the 14-day forecast below for the pattern.

Where does the St Marys tide data come from?

Tide heights are pulled from the UK Environment Agency tide gauge network in real time, with a 14-day forecast modelled from Open-Meteo. The data is refreshed every hour and is free for anglers, surfers, kayakers and divers to use.

When are the best fishing times at St Marys today?

The major solunar feeding periods at St Marys today are 00:30 to 02:30 and 12:40 to 14:40, when the moon is overhead and underfoot. Minor periods fall around moonrise and moonset. Fish tend to feed most actively in these windows, so plan a session around them where the state of tide also suits.

Nearest tide gauges to St Marys

By great-circle distance · cross-check at your closest local gauge.

Newlyn tide times

South West · 37 mi

Penzance tide times

South West · 37 mi

Plymouth tide times

South West · 101 mi

Ilfracombe tide times

South West · 132 mi

Milford Haven tide times

Wales · 135 mi

Mumbles tide times

Wales · 153 mi

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