Guam · NOAA station 1630000
Apra Harbor tide times
High and low astronomical tide predictions for this harbor, in local time.
2026-10-25 · Apra Harbor
Source checked
NOAA predictions fetched 2026-10-25T00:53:17.027Z. Reused for up to six hours before a source refresh.
| Local time | Predicted tide | Height (m MLLW) |
|---|---|---|
| Low | 0.061 | |
| High | 0.677 | |
| Low | 0.246 | |
| High | 0.728 |
Downloads preserve this table’s source timestamp and checked status. They do not update automatically after import.
Source and harbor scope
NOAA station 1630000 at Apra Harbor. These predictions do not describe every beach, reef, or harbor in Guam.
Times use Pacific/Guam (UTC+10). Heights are metres above Mean Lower Low Water (MLLW), a tidal reference level; they are not water depth or clearance measurements. A negative height means below that reference level.
Only NOAA’s published high and low events are shown. Contifield does not interpolate an hourly tide curve.
These are predicted tides, not observed water levels. Weather, wind, waves, storm surge, and local conditions can change actual levels. This harbor table does not establish safe navigation, swimming, or reef access; consult local conditions and official navigation information.
NOAA station and tide predictions · NOAA data method · NOAA data use information
Data: NOAA CO-OPS. Contifield is an independent presentation of these predictions. Calendar exports contain individual high/low instants in UTC, displayed by your calendar in its own chosen time zone.