Today's tides at Unawatuna Beach (2026-09-08, times in Asia/Colombo): High tide at 01:40 (0.19 m)
Tide Prediction — Unawatuna Beach
30-day tidal curve with high/low extremes and moon phase.
Today's Tide Detail
Hourly tide levels for today with high/low water times highlighted.
High Tide
20:10
0.19 m
Best Viewing Window
Recommended time slots for optimal sea viewing.
19:10–21:10
Hourly Levels
| Hour | Height | Trend |
|---|---|---|
| 00:00 | 0.01 m | Rising |
| 01:00 | 0.01 m | Rising |
| 02:00 | 0.01 m | Rising |
| 03:00 | 0.01 m | Rising |
| 04:00 | 0.01 m | Rising |
| 05:00 | 0.01 m | Rising |
| 06:00 | 0.01 m | Rising |
| 07:00 | 0.01 m | Rising |
| 08:00 | 0.01 m | Rising |
| 09:00 | 0.01 m | Rising |
| 10:00 | 0.01 m | Rising |
| 11:00 | 0.01 m | Rising |
| 12:00 | 0.01 m | Rising |
| 13:00 | 0.01 m | Rising |
| 14:00 | 0.01 m | Rising |
| 15:00 | 0.01 m | Rising |
| 16:00 | 0.01 m | Rising |
| 17:00 | 0.01 m | Rising |
| 18:00 | 0.11 m | Rising |
| 19:00 | 0.17 m | Slack |
| 20:00 | 0.19 m | Falling |
| 21:00 | 0.15 m | Falling |
| 22:00 | 0.08 m | Falling |
| 23:00 | -0.01 m | Slack |
30-Day Tide Curve
Sinusoidal tide prediction. Gray bands = night, red dot = now, H/L = today's high/low water.
Waxing Gibbous99.1%
Sunrise 00:44 · Sunset 12:55Spring Tide · Coefficient 116.4All Extremes (30 days)
High and low water across the full forecast window.
| Date | Time | Type | Height |
|---|---|---|---|
| Sep 8 | 20:10 | High | 0.19 m |
| Sep 9 | 02:10 | Low | -0.17 m |
| Sep 9 | 08:10 | High | 0.26 m |
| Sep 9 | 14:10 | Low | -0.23 m |
| Sep 9 | 20:10 | High | 0.26 m |
| Sep 10 | 02:10 | Low | -0.20 m |
| Sep 10 | 08:10 | High | 0.30 m |
| Sep 10 | 15:10 | Low | -0.26 m |
| Sep 10 | 21:10 | High | 0.32 m |
| Sep 11 | 03:10 | Low | -0.22 m |
| Sep 11 | 09:10 | High | 0.32 m |
| Sep 11 | 15:10 | Low | -0.29 m |
| Sep 11 | 21:10 | High | 0.35 m |
| Sep 12 | 03:10 | Low | -0.24 m |
| Sep 12 | 09:10 | High | 0.32 m |
| Sep 12 | 15:10 | Low | -0.30 m |
| Sep 12 | 22:10 | High | 0.35 m |
| Sep 13 | 04:10 | Low | -0.24 m |
| Sep 13 | 10:10 | High | 0.30 m |
| Sep 13 | 16:10 | Low | -0.30 m |
| Sep 13 | 22:10 | High | 0.34 m |
| Sep 14 | 04:10 | Low | -0.24 m |
| Sep 14 | 10:10 | High | 0.27 m |
| Sep 14 | 16:10 | Low | -0.30 m |
| Sep 14 | 22:10 | High | 0.30 m |
| Sep 15 | 04:10 | Low | -0.22 m |
| Sep 15 | 10:10 | High | 0.22 m |
| Sep 15 | 16:10 | Low | -0.28 m |
| Sep 15 | 23:10 | High | 0.26 m |
| Sep 16 | 05:10 | Low | -0.20 m |
| Sep 16 | 11:10 | High | 0.17 m |
| Sep 16 | 17:10 | Low | -0.25 m |
| Sep 16 | 23:10 | High | 0.21 m |
| Sep 17 | 05:10 | Low | -0.16 m |
| Sep 17 | 11:10 | High | 0.11 m |
| Sep 17 | 17:10 | Low | -0.21 m |
| Sep 17 | 23:10 | High | 0.16 m |
| Sep 18 | 06:10 | Low | -0.11 m |
| Sep 18 | 11:10 | High | 0.06 m |
| Sep 18 | 17:10 | Low | -0.15 m |
| Sep 19 | 24:10 | High | 0.11 m |
| Sep 19 | 06:10 | Low | -0.06 m |
| Sep 19 | 11:10 | High | 0.01 m |
| Sep 19 | 17:10 | Low | -0.10 m |
| Sep 20 | 24:10 | High | 0.05 m |
| Sep 20 | 15:10 | Low | -0.07 m |
| Sep 20 | 22:10 | High | -0.01 m |
| Sep 21 | 24:10 | Low | -0.01 m |
| Sep 21 | 06:10 | High | 0.07 m |
| Sep 21 | 14:10 | Low | -0.11 m |
| Sep 21 | 19:10 | High | 0.05 m |
| Sep 22 | 01:10 | Low | -0.07 m |
| Sep 22 | 07:10 | High | 0.14 m |
| Sep 22 | 13:10 | Low | -0.15 m |
| Sep 22 | 20:10 | High | 0.11 m |
| Sep 23 | 01:10 | Low | -0.12 m |
| Sep 23 | 07:10 | High | 0.19 m |
| Sep 23 | 14:10 | Low | -0.19 m |
| Sep 23 | 20:10 | High | 0.19 m |
| Sep 24 | 02:10 | Low | -0.16 m |
| Sep 24 | 08:10 | High | 0.24 m |
| Sep 24 | 14:10 | Low | -0.22 m |
| Sep 24 | 20:10 | High | 0.26 m |
| Sep 25 | 02:10 | Low | -0.21 m |
| Sep 25 | 08:10 | High | 0.28 m |
| Sep 25 | 14:10 | Low | -0.25 m |
| Sep 25 | 20:10 | High | 0.31 m |
| Sep 26 | 03:10 | Low | -0.23 m |
| Sep 26 | 09:10 | High | 0.29 m |
| Sep 26 | 15:10 | Low | -0.27 m |
| Sep 26 | 21:10 | High | 0.36 m |
| Sep 27 | 03:10 | Low | -0.25 m |
| Sep 27 | 09:10 | High | 0.30 m |
| Sep 27 | 15:10 | Low | -0.30 m |
| Sep 27 | 21:10 | High | 0.38 m |
| Sep 28 | 03:10 | Low | -0.25 m |
| Sep 28 | 09:10 | High | 0.28 m |
| Sep 28 | 15:10 | Low | -0.30 m |
| Sep 28 | 22:10 | High | 0.37 m |
| Sep 29 | 04:10 | Low | -0.25 m |
| Sep 29 | 10:10 | High | 0.25 m |
| Sep 29 | 16:10 | Low | -0.31 m |
| Sep 29 | 22:10 | High | 0.34 m |
| Sep 30 | 04:10 | Low | -0.22 m |
| Sep 30 | 10:10 | High | 0.21 m |
| Sep 30 | 16:10 | Low | -0.29 m |
| Sep 30 | 23:10 | High | 0.29 m |
| Oct 1 | 05:10 | Low | -0.19 m |
| Oct 1 | 11:10 | High | 0.15 m |
| Oct 1 | 17:10 | Low | -0.25 m |
| Oct 1 | 23:10 | High | 0.23 m |
| Oct 2 | 05:10 | Low | -0.14 m |
| Oct 2 | 11:10 | High | 0.09 m |
| Oct 2 | 17:10 | Low | -0.20 m |
| Oct 3 | 24:10 | High | 0.16 m |
| Oct 3 | 06:10 | Low | -0.08 m |
| Oct 3 | 11:10 | High | 0.03 m |
| Oct 3 | 17:10 | Low | -0.12 m |
| Oct 4 | 01:10 | High | 0.08 m |
| Oct 4 | 08:10 | Low | -0.02 m |
| Oct 4 | 10:10 | High | -0.02 m |
| Oct 4 | 16:10 | Low | -0.03 m |
| Oct 5 | 05:10 | High | 0.06 m |
| Oct 5 | 12:10 | Low | -0.08 m |
| Oct 5 | 19:10 | High | 0.07 m |
| Oct 6 | 24:10 | Low | -0.05 m |
| Oct 6 | 06:10 | High | 0.12 m |
| Oct 6 | 13:10 | Low | -0.13 m |
| Oct 6 | 19:10 | High | 0.17 m |
| Oct 7 | 01:10 | Low | -0.11 m |
| Oct 7 | 07:10 | High | 0.19 m |
| Oct 7 | 13:10 | Low | -0.18 m |
| Oct 7 | 19:10 | High | 0.24 m |
| Oct 8 | 02:10 | Low | -0.15 m |
| Oct 8 | 07:10 | High | 0.23 m |
| Oct 8 | 14:10 | Low | -0.22 m |
Moon Phase
Waxing Gibbous
Tides are strongest near new and full moons (spring tides) and weakest near quarter moons (neap tides).
High & Low Tides Today
Times and heights of today's high and low water.
| Time | Type | Height |
|---|---|---|
| 20:10 | High | 0.19 m |
Tide Calendar — September 2026
Daily tide type and range with high/low tide counts and moon phase.
September 2026
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
Neap 0.6m
↑2 ↓2
2
Mixed 0.5m
↑1 ↓2
3
Mixed 0.5m
↑2 ↓2
4
Mixed 0.3m
↑2 ↓2
5
Mixed 0.2m
↑2 ↓2
6
Spring 0.2m
↑2 ↓1
7
Spring 0.3m
↑2 ↓2
8
Spring 0.4m
↑2 ↓2
9
Spring 0.5m
↑2 ↓2
10
Spring 0.6m
↑2 ↓2
11
Spring 0.6m
↑2 ↓2
12
Mixed 0.7m
↑2 ↓2
13
Mixed 0.6m
↑2 ↓2
14
Mixed 0.6m
↑2 ↓2
15
Mixed 0.5m
↑2 ↓2
16
Neap 0.5m
↑2 ↓2
17
Mixed 0.4m
↑1 ↓2
18
Mixed 0.3m
↑2 ↓2
19
Mixed 0.2m
↑2 ↓2
20
Mixed 0.1m
↑2 ↓1
21
Spring 0.2m
↑2 ↓2
22
Spring 0.3m
↑2 ↓2
23
Spring 0.4m
↑2 ↓2
24
Spring 0.5m
↑2 ↓2
25
Spring 0.6m
↑2 ↓2
26
Mixed 0.6m
↑2 ↓2
27
Mixed 0.7m
↑2 ↓2
28
Mixed 0.7m
↑2 ↓2
29
Mixed 0.6m
↑2 ↓2
30
Neap 0.6m
↑1 ↓2
Spring TideMixed TideNeap Tide
Reading the Calendar
- • Cell color shows the daily tide type: spring (blue), mixed (teal), neap (gray).
- • ↑N / ↓M shows the count of high and low tides that day.
- • Moon emoji indicates the lunar phase, which modulates tide range.
- • Spring tides (full/new moon) yield larger ranges; neap tides (quarter moons) yield smaller ranges.
Tide predictions are computed from global harmonic constituents (FES2022b) with UTide harmonic-analysis fallback based on UHSLC observations, times shown in local timezone.