Station Number 44301
Prefecture Tokyo [ Local Portal ]
Location 東京都小笠原村父島字西町 父島気象観測所 (OGASAWARA MURA, TOKYO TO)
Months of Observations 403
Number of Observations 293,977
Period of Observations
Period Name Lat. Long. Height Anemometer
1986/03/18 -- 2019/09/99 CHICHIJIMA 27.092N 142.190E 3m 15.8m
Real-time Data AMeRAS (AMeDAS Ranking Service)
Past Heavy Rain Data AMeDAS heavy rain
Weather Disaster Reports
Typhoon History
Neighbor Stations
Number Name Distance Azimuth

Statistics for the Whole Period

Precipitation

0.0mm - 0.4mm 0.0mm - 0.4mm = 279,254
[279,254 (94.99% / 95.00%)] [279,254 / 293,946 (95.00)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 7,576
[7,576 (2.58% / 2.58%)] [286,830 / 14,692 (97.58)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 2,386
[2,386 (0.81% / 0.81%)] [289,216 / 7,116 (98.39)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 1,333
[1,333 (0.45% / 0.45%)] [290,549 / 4,730 (98.84)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 827
[827 (0.28% / 0.28%)] [291,376 / 3,397 (99.13)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 584
[584 (0.20% / 0.20%)] [291,960 / 2,570 (99.32)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 407
[407 (0.14% / 0.14%)] [292,367 / 1,986 (99.46)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 296
[296 (0.10% / 0.10%)] [292,663 / 1,579 (99.56)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 226
[226 (0.08% / 0.08%)] [292,889 / 1,283 (99.64)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 171
[171 (0.06% / 0.06%)] [293,060 / 1,057 (99.70)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 147
[147 (0.05% / 0.05%)] [293,207 / 886 (99.75)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 139
[139 (0.05% / 0.05%)] [293,346 / 739 (99.80)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 91
[91 (0.03% / 0.03%)] [293,437 / 600 (99.83)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 70
[70 (0.02% / 0.02%)] [293,507 / 509 (99.85)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 60
[60 (0.02% / 0.02%)] [293,567 / 439 (99.87)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 47
[47 (0.02% / 0.02%)] [293,614 / 379 (99.89)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 38
[38 (0.01% / 0.01%)] [293,652 / 332 (99.90)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 33
[33 (0.01% / 0.01%)] [293,685 / 294 (99.91)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 29
[29 (0.01% / 0.01%)] [293,714 / 261 (99.92)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 24
[24 (0.01% / 0.01%)] [293,738 / 232 (99.93)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 14
[14 (0.00% / 0.00%)] [293,752 / 208 (99.93)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 17
[17 (0.01% / 0.01%)] [293,769 / 194 (99.94)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 28
[28 (0.01% / 0.01%)] [293,797 / 177 (99.95)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 18
[18 (0.01% / 0.01%)] [293,815 / 149 (99.96)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 18
[18 (0.01% / 0.01%)] [293,833 / 131 (99.96)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 15
[15 (0.01% / 0.01%)] [293,848 / 113 (99.97)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 15
[15 (0.01% / 0.01%)] [293,863 / 98 (99.97)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 6
[6 (0.00% / 0.00%)] [293,869 / 83 (99.97)]
27.5mm - 28.4mm 27.5mm - 28.4mm = 4
[4 (0.00% / 0.00%)] [293,873 / 77 (99.98)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 8
[8 (0.00% / 0.00%)] [293,881 / 73 (99.98)]
29.5mm - 30.4mm 29.5mm - 30.4mm = 7
[7 (0.00% / 0.00%)] [293,888 / 65 (99.98)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 6
[6 (0.00% / 0.00%)] [293,894 / 58 (99.98)]
31.5mm - 32.4mm 31.5mm - 32.4mm = 3
[3 (0.00% / 0.00%)] [293,897 / 52 (99.98)]
32.5mm - 33.4mm 32.5mm - 33.4mm = 5
[5 (0.00% / 0.00%)] [293,902 / 49 (99.99)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 2
[2 (0.00% / 0.00%)] [293,904 / 44 (99.99)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 4
[4 (0.00% / 0.00%)] [293,908 / 42 (99.99)]
35.5mm - 36.4mm 35.5mm - 36.4mm = 3
[3 (0.00% / 0.00%)] [293,911 / 38 (99.99)]
36.5mm - 37.4mm 36.5mm - 37.4mm = 4
[4 (0.00% / 0.00%)] [293,915 / 35 (99.99)]
37.5mm - 38.4mm 37.5mm - 38.4mm = 2
[2 (0.00% / 0.00%)] [293,917 / 31 (99.99)]
38.5mm - 39.4mm 38.5mm - 39.4mm = 7
[7 (0.00% / 0.00%)] [293,924 / 29 (99.99)]
39.5mm - 40.4mm 39.5mm - 40.4mm = 4
[4 (0.00% / 0.00%)] [293,928 / 22 (99.99)]
40.5mm - 41.4mm 40.5mm - 41.4mm = 1
[1 (0.00% / 0.00%)] [293,929 / 18 (99.99)]
41.5mm - 42.4mm 41.5mm - 42.4mm = 5
[5 (0.00% / 0.00%)] [293,934 / 17 (100.00)]
42.5mm - 43.4mm 42.5mm - 43.4mm = 1
[1 (0.00% / 0.00%)] [293,935 / 12 (100.00)]
45.5mm - 46.4mm 45.5mm - 46.4mm = 2
[2 (0.00% / 0.00%)] [293,937 / 11 (100.00)]
46.5mm - 47.4mm 46.5mm - 47.4mm = 1
[1 (0.00% / 0.00%)] [293,938 / 9 (100.00)]
48.5mm - 49.4mm 48.5mm - 49.4mm = 2
[2 (0.00% / 0.00%)] [293,940 / 8 (100.00)]
49.5mm - 50.4mm 49.5mm - 50.4mm = 2
[2 (0.00% / 0.00%)] [293,942 / 6 (100.00)]
51.5mm - 52.4mm 51.5mm - 52.4mm = 1
[1 (0.00% / 0.00%)] [293,943 / 4 (100.00)]
55.5mm - 56.4mm 55.5mm - 56.4mm = 1
[1 (0.00% / 0.00%)] [293,944 / 3 (100.00)]
70.5mm - 71.4mm 70.5mm - 71.4mm = 1
[1 (0.00% / 0.00%)] [293,945 / 2 (100.00)]
78.5mm - 79.4mm 78.5mm - 79.4mm = 1
[1 (0.00% / 0.00%)] [293,946 / 1 (100.00)]

Missing observations (31 / 0.01%)

Wind Direction

Calm Calm = 5,067
[5,067 (1.72% / 1.72%)]
NNE NNE = 22,167
[22,167 (7.54% / 7.54%)]
NE NE = 24,936
[24,936 (8.48% / 8.48%)]
ENE ENE = 34,395
[34,395 (11.70% / 11.70%)]
E E = 18,834
[18,834 (6.41% / 6.41%)]
ESE ESE = 19,724
[19,724 (6.71% / 6.71%)]
SE SE = 21,156
[21,156 (7.20% / 7.20%)]
SSE SSE = 19,287
[19,287 (6.56% / 6.56%)]
S S = 35,346
[35,346 (12.02% / 12.02%)]
SSW SSW = 16,729
[16,729 (5.69% / 5.69%)]
SW SW = 9,072
[9,072 (3.09% / 3.09%)]
WSW WSW = 3,071
[3,071 (1.04% / 1.04%)]
W W = 2,885
[2,885 (0.98% / 0.98%)]
WNW WNW = 6,288
[6,288 (2.14% / 2.14%)]
NW NW = 21,116
[21,116 (7.18% / 7.18%)]
NNW NNW = 15,623
[15,623 (5.31% / 5.32%)]
N N = 18,242
[18,242 (6.21% / 6.21%)]

Missing observations (39 / 0.01%)

Wind Speed

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 5,868
[5,868 (2.00% / 2.00%)] [5,868 / 293,946 (2.00)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 45,172
[45,172 (15.37% / 15.37%)] [51,040 / 288,078 (17.36)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 61,539
[61,539 (20.93% / 20.94%)] [112,579 / 242,906 (38.30)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 65,153
[65,153 (22.16% / 22.16%)] [177,732 / 181,367 (60.46)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 50,440
[50,440 (17.16% / 17.16%)] [228,172 / 116,214 (77.62)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 29,863
[29,863 (10.16% / 10.16%)] [258,035 / 65,774 (87.78)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 16,669
[16,669 (5.67% / 5.67%)] [274,704 / 35,911 (93.45)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 9,188
[9,188 (3.13% / 3.13%)] [283,892 / 19,242 (96.58)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 4,718
[4,718 (1.60% / 1.61%)] [288,610 / 10,054 (98.18)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 2,410
[2,410 (0.82% / 0.82%)] [291,020 / 5,336 (99.00)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 1,298
[1,298 (0.44% / 0.44%)] [292,318 / 2,926 (99.45)]
10.5m/s - 11.4m/s 10.5m/s - 11.4m/s = 689
[689 (0.23% / 0.23%)] [293,007 / 1,628 (99.68)]
11.5m/s - 12.4m/s 11.5m/s - 12.4m/s = 364
[364 (0.12% / 0.12%)] [293,371 / 939 (99.80)]
12.5m/s - 13.4m/s 12.5m/s - 13.4m/s = 218
[218 (0.07% / 0.07%)] [293,589 / 575 (99.88)]
13.5m/s - 14.4m/s 13.5m/s - 14.4m/s = 117
[117 (0.04% / 0.04%)] [293,706 / 357 (99.92)]
14.5m/s - 15.4m/s 14.5m/s - 15.4m/s = 62
[62 (0.02% / 0.02%)] [293,768 / 240 (99.94)]
15.5m/s - 16.4m/s 15.5m/s - 16.4m/s = 46
[46 (0.02% / 0.02%)] [293,814 / 178 (99.96)]
16.5m/s - 17.4m/s 16.5m/s - 17.4m/s = 29
[29 (0.01% / 0.01%)] [293,843 / 132 (99.96)]
17.5m/s - 18.4m/s 17.5m/s - 18.4m/s = 22
[22 (0.01% / 0.01%)] [293,865 / 103 (99.97)]
18.5m/s - 19.4m/s 18.5m/s - 19.4m/s = 19
[19 (0.01% / 0.01%)] [293,884 / 81 (99.98)]
19.5m/s - 20.4m/s 19.5m/s - 20.4m/s = 19
[19 (0.01% / 0.01%)] [293,903 / 62 (99.99)]
20.5m/s - 21.4m/s 20.5m/s - 21.4m/s = 11
[11 (0.00% / 0.00%)] [293,914 / 43 (99.99)]
21.5m/s - 22.4m/s 21.5m/s - 22.4m/s = 4
[4 (0.00% / 0.00%)] [293,918 / 32 (99.99)]
22.5m/s - 23.4m/s 22.5m/s - 23.4m/s = 6
[6 (0.00% / 0.00%)] [293,924 / 28 (99.99)]
23.5m/s - 24.4m/s 23.5m/s - 24.4m/s = 5
[5 (0.00% / 0.00%)] [293,929 / 22 (99.99)]
24.5m/s - 25.4m/s 24.5m/s - 25.4m/s = 5
[5 (0.00% / 0.00%)] [293,934 / 17 (100.00)]
25.5m/s - 26.4m/s 25.5m/s - 26.4m/s = 3
[3 (0.00% / 0.00%)] [293,937 / 12 (100.00)]
26.5m/s - 27.4m/s 26.5m/s - 27.4m/s = 2
[2 (0.00% / 0.00%)] [293,939 / 9 (100.00)]
27.5m/s - 28.4m/s 27.5m/s - 28.4m/s = 3
[3 (0.00% / 0.00%)] [293,942 / 7 (100.00)]
28.5m/s - 29.4m/s 28.5m/s - 29.4m/s = 4
[4 (0.00% / 0.00%)] [293,946 / 4 (100.00)]

Missing observations (31 / 0.01%)

Temperature

9.5C - 10.4C 9.5C - 10.4C = 6
[6 (0.00% / 0.00%)] [6 / 293,929 (0.00)]
10.5C - 11.4C 10.5C - 11.4C = 63
[63 (0.02% / 0.02%)] [69 / 293,923 (0.02)]
11.5C - 12.4C 11.5C - 12.4C = 304
[304 (0.10% / 0.10%)] [373 / 293,860 (0.13)]
12.5C - 13.4C 12.5C - 13.4C = 838
[838 (0.29% / 0.29%)] [1,211 / 293,556 (0.41)]
13.5C - 14.4C 13.5C - 14.4C = 1,859
[1,859 (0.63% / 0.63%)] [3,070 / 292,718 (1.04)]
14.5C - 15.4C 14.5C - 15.4C = 4,041
[4,041 (1.37% / 1.37%)] [7,111 / 290,859 (2.42)]
15.5C - 16.4C 15.5C - 16.4C = 7,365
[7,365 (2.51% / 2.51%)] [14,476 / 286,818 (4.92)]
16.5C - 17.4C 16.5C - 17.4C = 11,284
[11,284 (3.84% / 3.84%)] [25,760 / 279,453 (8.76)]
17.5C - 18.4C 17.5C - 18.4C = 15,841
[15,841 (5.39% / 5.39%)] [41,601 / 268,169 (14.15)]
18.5C - 19.4C 18.5C - 19.4C = 18,847
[18,847 (6.41% / 6.41%)] [60,448 / 252,328 (20.57)]
19.5C - 20.4C 19.5C - 20.4C = 20,990
[20,990 (7.14% / 7.14%)] [81,438 / 233,481 (27.71)]
20.5C - 21.4C 20.5C - 21.4C = 21,087
[21,087 (7.17% / 7.17%)] [102,525 / 212,491 (34.88)]
21.5C - 22.4C 21.5C - 22.4C = 20,269
[20,269 (6.89% / 6.90%)] [122,794 / 191,404 (41.78)]
22.5C - 23.4C 22.5C - 23.4C = 18,553
[18,553 (6.31% / 6.31%)] [141,347 / 171,135 (48.09)]
23.5C - 24.4C 23.5C - 24.4C = 19,041
[19,041 (6.48% / 6.48%)] [160,388 / 152,582 (54.57)]
24.5C - 25.4C 24.5C - 25.4C = 21,248
[21,248 (7.23% / 7.23%)] [181,636 / 133,541 (61.80)]
25.5C - 26.4C 25.5C - 26.4C = 25,254
[25,254 (8.59% / 8.59%)] [206,890 / 112,293 (70.39)]
26.5C - 27.4C 26.5C - 27.4C = 30,084
[30,084 (10.23% / 10.24%)] [236,974 / 87,039 (80.62)]
27.5C - 28.4C 27.5C - 28.4C = 30,152
[30,152 (10.26% / 10.26%)] [267,126 / 56,955 (90.88)]
28.5C - 29.4C 28.5C - 29.4C = 17,423
[17,423 (5.93% / 5.93%)] [284,549 / 26,803 (96.81)]
29.5C - 30.4C 29.5C - 30.4C = 7,295
[7,295 (2.48% / 2.48%)] [291,844 / 9,380 (99.29)]
30.5C - 31.4C 30.5C - 31.4C = 1,853
[1,853 (0.63% / 0.63%)] [293,697 / 2,085 (99.92)]
31.5C - 32.4C 31.5C - 32.4C = 213
[213 (0.07% / 0.07%)] [293,910 / 232 (99.99)]
32.5C - 33.4C 32.5C - 33.4C = 18
[18 (0.01% / 0.01%)] [293,928 / 19 (100.00)]
33.5C - 34.4C 33.5C - 34.4C = 1
[1 (0.00% / 0.00%)] [293,929 / 1 (100.00)]

Missing observations (48 / 0.02%)

Sunshine Duration

0.0h 0.0h = 191,411
[191,411 (65.11% / 65.17%)] [191,411 / 293,723 (65.17)]
0.1h 0.1h = 9,423
[9,423 (3.21% / 3.21%)] [200,834 / 102,312 (68.38)]
0.2h 0.2h = 7,001
[7,001 (2.38% / 2.38%)] [207,835 / 92,889 (70.76)]
0.3h 0.3h = 6,172
[6,172 (2.10% / 2.10%)] [214,007 / 85,888 (72.86)]
0.4h 0.4h = 6,491
[6,491 (2.21% / 2.21%)] [220,498 / 79,716 (75.07)]
0.5h 0.5h = 6,708
[6,708 (2.28% / 2.28%)] [227,206 / 73,225 (77.35)]
0.6h 0.6h = 7,429
[7,429 (2.53% / 2.53%)] [234,635 / 66,517 (79.88)]
0.7h 0.7h = 8,319
[8,319 (2.83% / 2.83%)] [242,954 / 59,088 (82.72)]
0.8h 0.8h = 9,479
[9,479 (3.22% / 3.23%)] [252,433 / 50,769 (85.94)]
0.9h 0.9h = 12,101
[12,101 (4.12% / 4.12%)] [264,534 / 41,290 (90.06)]
1.0h 1.0h = 29,189
[29,189 (9.93% / 9.94%)] [293,723 / 29,189 (100.00)]

Missing observations (254 / 0.09%)