World sea levels

Tide Gauge Details - Solomon Islands - Honiara

Device description

Name
Solomon Islands - Honiara
Country
Solomon Islands
Group
TD UNESCO
Lat/Lon
-9.4289 / 159.955505

Last measured values

Time(UTC)
13 Jan 2026 20:02:00
Latency
6645
Level
0.95

Harmonics

Points count
6480090
First date
11 Mar 2011 05:00
Last date
13 Jan 2026 20:02

Click on following link to see data:

Harmonics Constatns
Comp # Period (day) Cos factor (m) Sin factor (m)
0 0.00000 8.48401E-1 0E+0
1 0.12877 -3.05929E-5 -1.10554E-4
2 0.12886 -2.28493E-4 -2.40987E-4
3 0.12938 3.26624E-5 -2.81144E-4
4 0.14707 -1.98755E-4 1.15461E-4
5 0.16841 3.73764E-4 -1.65169E-4
6 0.16857 -6.8931E-4 -4.24263E-4
7 0.17036 5.65837E-4 -3.54451E-4
8 0.17052 -1.50005E-3 -3.33369E-4
9 0.17251 -7.88059E-5 7.95596E-4
10 0.17470 -2.83469E-4 -1.46475E-4
11 0.19989 1.05507E-3 3.86534E-4
12 0.20545 8.21998E-4 -3.43451E-4
13 0.24966 -6.06727E-4 8.07588E-4
14 0.25000 -5.1162E-4 -2.21665E-4
15 0.25395 5.97351E-4 1.99057E-3
16 0.25431 8.44756E-5 -1.55954E-3
17 0.25631 8.78791E-5 -3.63668E-4
18 0.25667 -6.85941E-4 -1.96454E-4
19 0.25876 -3.60389E-3 2.32655E-4
20 0.26122 9.4332E-4 1.40696E-3
21 0.33303 -1.04874E-3 -2.42381E-3
22 0.34071 -2.35155E-3 4.62047E-4
23 0.34135 -8.05002E-4 6.18517E-4
24 0.34502 -2.94023E-3 -4.6435E-3
25 0.34943 4.26544E-4 -3.53349E-4
26 0.48977 -3.413E-4 1.06449E-3
27 0.49109 6.41965E-4 1.90276E-3
28 0.49863 1.96399E-2 9.73625E-4
29 0.49932 1.31115E-4 -2.04405E-3
30 0.50000 -6.73009E-2 -2.80328E-2
31 0.50798 5.50269E-3 -2.46472E-4
32 0.50924 -1.87038E-3 -3.34347E-3
33 0.51606 1.52737E-3 2.16777E-3
34 0.51679 -1.78018E-3 -8.78925E-5
35 0.51753 -1.85557E-2 4.70451E-2
36 0.51826 3.0991E-4 6.39658E-4
37 0.52608 -1.85693E-3 -1.7416E-3
38 0.52743 -6.61827E-3 9.99844E-3
39 0.53632 -3.7621E-3 -3.02805E-4
40 0.53772 2.18741E-3 1.73607E-4
41 0.54697 -4.82838E-4 1.82727E-3
42 0.54843 2.29583E-4 3.93511E-4
43 0.89909 -1.53113E-4 2.9069E-4
44 0.92942 6.19032E-3 -6.51689E-3
45 0.93417 -7.25734E-4 1.3385E-3
46 0.96244 -9.15212E-3 7.2889E-3
47 0.96696 1.09277E-3 1.73436E-3
48 0.99185 1.05791E-3 -2.59947E-3
49 0.99455 -3.20916E-3 2.22007E-3
50 0.99727 1.6196E-1 1.43639E-1
51 1.00000 6.51834E-4 8.19738E-3
52 1.00275 4.63119E-2 5.79078E-2
53 1.00551 5.02821E-3 7.41939E-3
54 1.02954 1.47342E-3 4.30905E-4
55 1.03472 7.50477E-3 -5.7883E-3
56 1.04061 -1.65909E-3 -9.16154E-4
57 1.06951 3.70692E-3 -1.01226E-3
58 1.07581 8.85441E-2 -4.7295E-2
59 1.11346 2.67676E-3 -1.44924E-3
60 1.11951 -1.09434E-2 -1.51925E-2
61 1.16035 -2.18748E-5 -1.05781E-3
62 1.16693 -1.17355E-3 1.8139E-3
63 1.21136 1.94304E-4 2.24733E-4
64 13.66079 -3.65461E-3 -5.90548E-3
65 14.76529 -6.78835E-3 -2.25506E-3
66 27.55455 4.09654E-3 1.70396E-2
67 31.81193 8.45808E-5 -8.84715E-4
68 182.62118 -6.67629E-2 -1.06382E-2
69 365.25998 1.07249E-1 -1.63848E-2
Mathematical Formula
Tide calculation mathematical formula
Visual Basic Syntax
Function EstimateTideValues() As [Function]
                        Dim Pi As [Double] = Math.PI
                        Dim sum As [Double] = harmonics(0, 1)
                        For k As Int16 = 1 To harmonics.GetUpperBound(0)
                        Dim period As [Double] = 2 * Pi / harmonics(k, 0)
                        Dim coefCos As [Double] = harmonics(k, 1)
                        Dim coefSin As [Double] = harmonics(k, 2) 
                        sum = sum + coefCos * Math.Cos(time * period)
                        sum = sum + coefSin * Math.Sin(time * period)
                        Next
                        Return sum
                        End Function
C# Syntax
double EstimateTideValues()
                        {
                        double Pi = Math.PI;
                        double sum = harmonics[0, 1];
                        for (int k=1; k <= harmonics.GetUpperBound(0); k++)
                        {
                        double period = 2 * Pi / harmonics[k, 0];
                        double coefCos = harmonics[k, 1];
                        double coefSin = harmonics[k, 2];
                        sum += coefCos * Math.Cos(time * period);
                        sum += coefSin * Math.Sin(time * period);
                        }
                        return sum;
                        }

Axis ranges

Start
End