Porto Alegre Tide Times
Current Tide State
Falling tide
↓ Next: 18:59
Low in 0h
Current Tide Status
Next Tide
Low Tide
Time
18:59
Height
0.1m
Now
Tide Station Details
Station ID:
br-porto-alegre
Region:
America/Sao_Paulo
Country:
Brazil
Continent:
South America
Latitude:
-30.034600°
Longitude:
-51.217700°
Time & Data Information
Timezone:
America/Sao_Paulo
Abbreviation:
Sao Paulo
Local Time:
18:56
Last Updated:
2026-03-01T21:56:11.149Z
Data Source:
Live APIHeight Unit:
Meters (m)
Porto Alegre - 7 Day Tide Forecast (Sao Paulo)
Complete tidal predictions with Spring/Neap cycle analysis
Tidal Range
0.6m
Neap Tide
Porto Alegre Tidal Analysis
- Times shown in Sao Paulo
- Neap tides occur when sun and moon are at right angles, creating smaller ranges
- Heights are relative to Chart Datum
- Weather conditions may affect actual tide levels
📊Porto Alegre Tide Chart Key
The tide chart above shows the height and times of high tide and low tide for Porto Alegre. The red flashing dot shows the tide time right now. The grey shading corresponds to nighttime hours between sunset and sunrise at Porto Alegre.
Tide Times are Sao Paulo.
Fri 23 Jan (height: 5.59m / 18.3ft)
Wed 04 Feb (height: 5.91m / 19.4ft)
Porto Alegre Extreme Tides - Next 7 Days (Sao Paulo)
Highest and lowest tide predictions for the week ahead
Highest Tides
3:09
1 March 2026
0.7m
High Tide3:51
2 March 2026
0.6m
High Tide12:56
5 March 2026
0.6m
High Tide12:09
4 March 2026
0.6m
High Tide13:41
6 March 2026
0.6m
High TideLowest Tides
19:35
2 March 2026
0.1m
Low Tide18:59
1 March 2026
0.1m
Low Tide20:11
3 March 2026
0.1m
Low Tide20:47
4 March 2026
0.1m
Low Tide21:22
5 March 2026
0.2m
Low TideHighest Tide
0.7m
Lowest Tide
0.1m
Tidal Range
0.6m
Period
7 Days
What time is high tide in Porto Alegre?
The next high tide in Porto Alegre is at 3:09 with a height of 0.69m. 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 Porto Alegre?
The next low tide in Porto Alegre is at 8:03 with a height of 0.41m. 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.
Porto Alegre Tide Chart
The tide chart above shows a 7-day forecast of tide heights for Porto Alegre. 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 Brazil.
Tide Times for Porto Alegre: Sunday 1 March 1 March 2026
Tide Times for Porto Alegre: Monday 2 March 2 March 2026
Tide Times for Porto Alegre: Tuesday 3 March 3 March 2026
Tide Times for Porto Alegre: Wednesday 4 March 4 March 2026
Tide Times for Porto Alegre: Thursday 5 March 5 March 2026
Tide Times for Porto Alegre: Friday 6 March 6 March 2026
Tide Times for Porto Alegre: Saturday 7 March 7 March 2026
Porto Alegre Detailed Tide Times
| Date & Time | Height | Type |
|---|---|---|
1 March 2026 3:09 | 0.7m | High |
1 March 2026 8:03 | 0.4m | Low |
1 March 2026 8:40 | 0.4m | High |
1 March 2026 12:18 | 0.3m | Low |
1 March 2026 14:17 | 0.4m | High |
1 March 2026 18:59 | 0.1m | Low |
2 March 2026 3:51 | 0.6m | High |
2 March 2026 7:40 | 0.4m | Low |
2 March 2026 10:22 | 0.5m | High |
2 March 2026 19:35 | 0.1m | Low |
Porto Alegre
America/Sao_Paulo
Latitude
-30.034600°
Longitude
-51.217700°
Map Type
Street Map
Zoom Level
14x
Station Information
Latitude
-30.0346°
Longitude
-51.2177°
Timezone
America/Sao_Paulo
Station ID
br-porto-alegre
About Porto Alegre Tide Times
Porto Alegre is located on the South American coastline in Brazil. 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 Porto Alegre 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, Porto Alegre 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 Porto Alegre, 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 Porto Alegre?
🎣 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 Porto Alegre 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 Porto Alegre 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 Porto Alegre 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 Porto Alegre 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 Porto Alegre Tide Chart
The tide chart above plots predicted water height (in metres) against time for Porto Alegre. 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 Porto Alegre (America/Sao_Paulo). Remember that tide times advance by roughly 50 minutes each day, so always check the chart for your specific visit date.
Frequently Asked Questions — Porto Alegre Tides
How many tides does Porto Alegre have per day?
Most coastal locations, including Porto Alegre, 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 Porto Alegre is shown in the chart above.
How accurate are tide predictions for Porto Alegre?
Astronomical tide predictions for Porto Alegre 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 Porto Alegre 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 Porto Alegre 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 →