High tide occurs approximately 02:40 after the Moon passes over the local meridian of Rio de Janeiro (Ilha Fiscal).
Tidal predictions and solunar activity are mathematically estimated for recreational and tide watch calibration purposes only. This constant-based method is designed for semidiurnal tidal regimes (two high tides a day). Regions with diurnal or mixed tides will experience significant deviations. During lunar quarters (First and Third Quarter), natural variations may shift times by 1.5 to 2 hours compared to official tables.Strictly not for maritime navigation or safety-critical planning.
7-Day Tide & Activity Forecast
| Date | Moon Phase | Activity | High Tides (Estimated) |
|---|---|---|---|
| Today | Waning gibbous |
|
07:12 & 19:42 |
| Sun, Nov 1 | Last quarter |
|
08:11 & 20:38 |
| Mon, Nov 2 | Last quarter |
|
09:04 & 21:29 |
| Tue, Nov 3 | Waning crescent |
|
09:53 & 22:16 |
| Wed, Nov 4 | Waning crescent |
|
10:39 & 23:01 |
| Thu, Nov 5 | Waning crescent |
|
11:23 & 23:45 |
| Fri, Nov 6 | Waning crescent |
|
12:07 & -- |
Today's Solunar Activity & Feeding Curve
24-hour continuous biological activity score with estimated high tide alignments.
Official Port Data
This port relies on official hydrographic data and does not require community calibration.