Portbury Tide Times
Current Tide State
Falling tide
↓ Next: 0:32
Low in 3h
Current Tide Status
Next Tide
Low Tide
Time
0:32
Height
2.1m
in 3h
Tide Station Details
Station ID:
gb-portbury
Region:
Europe/London
Country:
United Kingdom
Continent:
Europe
Latitude:
51.500000°
Longitude:
-2.728500°
Time & Data Information
Timezone:
Europe/London
Abbreviation:
GMT
Local Time:
21:27
Last Updated:
2026-03-01T21:27:33.128Z
Data Source:
Live APIHeight Unit:
Meters (m)
Portbury - 7 Day Tide Forecast (GMT)
Complete tidal predictions with Spring/Neap cycle analysis
Tidal Range
12.2m
Spring Tide
Portbury Tidal Analysis
- Times shown in GMT
- Spring tides occur when sun and moon align, creating larger ranges
- Heights are relative to Chart Datum
- Weather conditions may affect actual tide levels
📊Portbury Tide Chart Key
The tide chart above shows the height and times of high tide and low tide for Portbury. The red flashing dot shows the tide time right now. The grey shading corresponds to nighttime hours between sunset and sunrise at Portbury.
Tide Times are GMT.
Fri 23 Jan (height: 5.59m / 18.3ft)
Wed 04 Feb (height: 5.91m / 19.4ft)
Portbury Extreme Tides - Next 7 Days (GMT)
Highest and lowest tide predictions for the week ahead
Highest Tides
8:19
5 March 2026
13.3m
High Tide7:41
4 March 2026
13.2m
High Tide20:04
4 March 2026
13.1m
High Tide8:54
6 March 2026
13.1m
High Tide20:40
5 March 2026
13.0m
High TideLowest Tides
14:31
4 March 2026
1.0m
Low Tide2:44
5 March 2026
1.0m
Low Tide15:05
5 March 2026
1.1m
Low Tide2:05
4 March 2026
1.1m
Low Tide3:16
6 March 2026
1.1m
Low TideHighest Tide
13.3m
Lowest Tide
1.0m
Tidal Range
12.2m
Period
7 Days
What time is high tide in Portbury?
The next high tide in Portbury is at 5:19 with a height of 11.24m. High tides occur approximately every 12 hours and 25 minutes due to the lunar cycle. Plan your beach visits, boating activities, and other marine pursuits around these peak water levels.
What time is low tide in Portbury?
The next low tide in Portbury is at 12:12 with a height of 2.35m. Low tides alternate with high tides throughout the day, providing optimal times for beach activities and marine exploration. Use this chart to plan fishing trips, beach visits, boating activities, and other marine pursuits.
Portbury Tide Chart
The tide chart above shows a 7-day forecast of tide heights for Portbury. The chart displays both high and low tides with precise times and heights in meters. You can use this chart to plan fishing trips, beach visits, boating activities, and other marine pursuits. The data is updated regularly from official tide monitoring stations to ensure accuracy for your location in United Kingdom.
Tide Times for Portbury: Sunday 1 March 1 March 2026
Tide Times for Portbury: Monday 2 March 2 March 2026
Tide Times for Portbury: Tuesday 3 March 3 March 2026
Tide Times for Portbury: Wednesday 4 March 4 March 2026
Tide Times for Portbury: Thursday 5 March 5 March 2026
Tide Times for Portbury: Friday 6 March 6 March 2026
Tide Times for Portbury: Saturday 7 March 7 March 2026
Portbury Detailed Tide Times
| Date & Time | Height | Type |
|---|---|---|
1 March 2026 5:19 | 11.2m | High |
1 March 2026 12:12 | 2.4m | Low |
1 March 2026 17:52 | 11.6m | High |
2 March 2026 0:32 | 2.1m | Low |
2 March 2026 6:13 | 12.2m | High |
2 March 2026 13:04 | 1.6m | Low |
2 March 2026 18:41 | 12.4m | High |
3 March 2026 1:21 | 1.5m | Low |
3 March 2026 7:00 | 12.8m | High |
3 March 2026 13:50 | 1.2m | Low |
Portbury
Europe/London
Latitude
51.500000°
Longitude
-2.728500°
Map Type
Street Map
Zoom Level
14x
Station Information
Latitude
51.5000°
Longitude
-2.7285°
Timezone
Europe/London
Station ID
gb-portbury
About Portbury Tide Times
Portbury is located on the European coastline in United Kingdom. The tide predictions shown above cover 7 days of high and low tide times, updated daily using professional-grade harmonic tidal analysis. Tide heights are displayed in metres above Chart Datum (CD), the standard reference level used in marine navigation charts.
Tidal patterns at Portbury are driven by the gravitational forces of the Moon and Sun acting on the local ocean. The timing and height of each tide depends on the shape of the local coastline, water depth, and the position of celestial bodies relative to Earth. Like all coastal locations, Portbury experiences a full tidal cycle approximately every 24 hours and 50 minutes.
Spring tides — which occur at new moon and full moon — produce the largest tidal ranges at Portbury, with higher high tides and lower low tides than average. Neap tides, at the quarter moons, produce the smallest ranges. This fortnightly cycle is an important consideration for anyone planning coastal activities in the area.
Who Uses Tide Predictions for Portbury?
🎣 Fishermen & Anglers
Fish are most active around tide changes, particularly the two hours either side of high and low water. Anglers targeting shore fish near Portbury use tide predictions to plan sessions when water movement is at its most productive.
⛵ Sailors & Boaters
Navigating in and out of harbours and estuaries near Portbury safely requires knowing the state of the tide. Sailors rely on these predictions to avoid running aground in shallow water and to time passage through tidal channels.
🏄 Surfers & Water Sports
Many surf breaks and water sports venues near Portbury are tide-dependent. Certain breaks work only on a specific tide height, while kayaking and paddleboarding routes can be heavily affected by tidal currents and water depth.
🏖️ Beachgoers & Walkers
Tidal beaches, coastal paths, and rock pools near Portbury are accessible only at certain tide states. Checking tide times before visiting ensures you don't get cut off by a rising tide, and helps you find the best time to explore exposed sand and rocky shores.
How to Read the Portbury Tide Chart
The tide chart above plots predicted water height (in metres) against time for Portbury. The curved line rises to peaks (high tide) and falls to troughs (low tide). The height shown is measured above Chart Datum — a reference level set near the lowest predicted astronomical tide level for the area.
- HWHigh Water — the peak of the tide. This is when the sea is at its highest level. The exact time and height changes each day.
- LWLow Water — the trough of the tide. The sea is at its lowest level, often exposing rocks, sand, and mudflats.
- ↑Flood tide — the period when the tide is rising from low water to high water. Currents flow onshore or up estuaries during this phase.
- ↓Ebb tide — the period when the tide is falling from high water to low water. Currents flow offshore or down estuaries during this phase.
All times shown are in the local timezone for Portbury (Europe/London). Remember that tide times advance by roughly 50 minutes each day, so always check the chart for your specific visit date.
Frequently Asked Questions — Portbury Tides
How many tides does Portbury have per day?
Most coastal locations, including Portbury, experience two high tides and two low tides every 24 hours and 50 minutes — this is called a semidiurnal tidal pattern. Some regions experience one tide per day (diurnal), or a mixed pattern. The exact cycle for Portbury is shown in the chart above.
How accurate are tide predictions for Portbury?
Astronomical tide predictions for Portbury are typically accurate to within 15–30 minutes and a few centimetres. However, actual water levels can vary due to weather — strong onshore winds raise sea levels, while offshore winds lower them. Storm surges and low atmospheric pressure can add significant height. Always treat predictions as a guide and check local conditions before heading to the coast.
What is Chart Datum and why is it used?
Chart Datum (CD) is the reference level from which all tide heights at Portbury are measured. It is set close to the Lowest Astronomical Tide (LAT) — meaning tide heights are almost always positive numbers. Chart Datum is also the reference used on nautical charts for water depth, so mariners can add the predicted tide height to the charted depth to calculate the actual depth of water at any given time.
Why do tide times change every day?
Tides are caused by the Moon's orbit around the Earth, which takes approximately 24 hours and 50 minutes to complete one tidal cycle. This means high and low tides at Portbury occur about 50 minutes later each day. Over a month, this adds up to a complete shift through the clock. The height of tides also changes through the monthly cycle between spring and neap tides.
Want to learn more about how tides work? Read our complete guide to tide times →