Home > Observation data > Monthly overview > Monthly overview (May 2025)

Monthly overview (May 2025)

The monthly mean values of the geomagnetic field components at Kakioka are D: -7°-58.1′°, H: 30120nT, Z: 35993nT and F: 46933nT for May 2025.

Monthly average of the K-index daily sum is 20.1. indicates an extremely high level of geomagnetic activity during the month.

Notable geomagnetic events include 1 magnetic storms, 1 si, 3 bay, 2 sfe, 7 pi and 1 pc.

The international 5 quietest days are the 7,12,22,24,25^th.

The international 5 most disturbed days are the 2,5,17,29,30^th.

Date	K-index daily sum	Geomagnetic activity	International 5 quietest days	International 5 quietest days	geomagnetic 1-minute value plot
1	25	disturbed			plot
2	27	disturbed		○	plot
3	25	disturbed			plot
4	26	disturbed			plot
5	30	disturbed		○	plot
6	20	moderately disturbed			plot
7	14	moderately calm	○		plot
8	17	moderately disturbed			plot
9	20	moderately disturbed			plot
10	16	moderately calm			plot
11	19	moderately disturbed			plot
12	14	moderately calm	○		plot
13	15	moderately calm			plot
14	21	moderately disturbed			plot
15	17	moderately disturbed			plot
16	20	moderately disturbed			plot
17	30	disturbed		○	plot
18	26	disturbed			plot
19	12	moderately calm			plot
20	19	moderately disturbed			plot
21	19	moderately disturbed			plot
22	14	moderately calm	○		plot
23	12	moderately calm			plot
24	9	calm	○		plot
25	13	moderately calm	○		plot
26	15	moderately calm			plot
27	23	disturbed			plot
28	24	disturbed			plot
29	33	disturbed		○	plot
30	29	disturbed		○	plot
31	19	moderately disturbed			plot

*) Plot diagram opens in a separate window.