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 366
Number of Observations 266,987
Period of Observations
Period Name Lat. Long. Height Anemometer
1986/03/18 -- 2016/08/99 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 = 253,693
[253,693 (95.02% / 95.03%)] [253,693 / 266,956 (95.03%)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 6,786
[6,786 (2.54% / 2.54%)] [260,479 / 13,263 (97.57%)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 2,170
[2,170 (0.81% / 0.81%)] [262,649 / 6,477 (98.39%)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 1,214
[1,214 (0.45% / 0.45%)] [263,863 / 4,307 (98.84%)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 755
[755 (0.28% / 0.28%)] [264,618 / 3,093 (99.12%)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 530
[530 (0.20% / 0.20%)] [265,148 / 2,338 (99.32%)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 375
[375 (0.14% / 0.14%)] [265,523 / 1,808 (99.46%)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 274
[274 (0.10% / 0.10%)] [265,797 / 1,433 (99.57%)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 212
[212 (0.08% / 0.08%)] [266,009 / 1,159 (99.65%)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 154
[154 (0.06% / 0.06%)] [266,163 / 947 (99.70%)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 134
[134 (0.05% / 0.05%)] [266,297 / 793 (99.75%)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 121
[121 (0.05% / 0.05%)] [266,418 / 659 (99.80%)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 84
[84 (0.03% / 0.03%)] [266,502 / 538 (99.83%)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 66
[66 (0.02% / 0.02%)] [266,568 / 454 (99.85%)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 54
[54 (0.02% / 0.02%)] [266,622 / 388 (99.87%)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 42
[42 (0.02% / 0.02%)] [266,664 / 334 (99.89%)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 35
[35 (0.01% / 0.01%)] [266,699 / 292 (99.90%)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 28
[28 (0.01% / 0.01%)] [266,727 / 257 (99.91%)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 24
[24 (0.01% / 0.01%)] [266,751 / 229 (99.92%)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 21
[21 (0.01% / 0.01%)] [266,772 / 205 (99.93%)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 14
[14 (0.01% / 0.01%)] [266,786 / 184 (99.94%)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 16
[16 (0.01% / 0.01%)] [266,802 / 170 (99.94%)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 26
[26 (0.01% / 0.01%)] [266,828 / 154 (99.95%)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 15
[15 (0.01% / 0.01%)] [266,843 / 128 (99.96%)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 16
[16 (0.01% / 0.01%)] [266,859 / 113 (99.96%)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 13
[13 (0.00% / 0.00%)] [266,872 / 97 (99.97%)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 13
[13 (0.00% / 0.00%)] [266,885 / 84 (99.97%)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 5
[5 (0.00% / 0.00%)] [266,890 / 71 (99.98%)]
27.5mm - 28.4mm 27.5mm - 28.4mm = 4
[4 (0.00% / 0.00%)] [266,894 / 66 (99.98%)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 7
[7 (0.00% / 0.00%)] [266,901 / 62 (99.98%)]
29.5mm - 30.4mm 29.5mm - 30.4mm = 6
[6 (0.00% / 0.00%)] [266,907 / 55 (99.98%)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 4
[4 (0.00% / 0.00%)] [266,911 / 49 (99.98%)]
31.5mm - 32.4mm 31.5mm - 32.4mm = 3
[3 (0.00% / 0.00%)] [266,914 / 45 (99.98%)]
32.5mm - 33.4mm 32.5mm - 33.4mm = 4
[4 (0.00% / 0.00%)] [266,918 / 42 (99.99%)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 1
[1 (0.00% / 0.00%)] [266,919 / 38 (99.99%)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 3
[3 (0.00% / 0.00%)] [266,922 / 37 (99.99%)]
35.5mm - 36.4mm 35.5mm - 36.4mm = 3
[3 (0.00% / 0.00%)] [266,925 / 34 (99.99%)]
36.5mm - 37.4mm 36.5mm - 37.4mm = 3
[3 (0.00% / 0.00%)] [266,928 / 31 (99.99%)]
37.5mm - 38.4mm 37.5mm - 38.4mm = 2
[2 (0.00% / 0.00%)] [266,930 / 28 (99.99%)]
38.5mm - 39.4mm 38.5mm - 39.4mm = 6
[6 (0.00% / 0.00%)] [266,936 / 26 (99.99%)]
39.5mm - 40.4mm 39.5mm - 40.4mm = 3
[3 (0.00% / 0.00%)] [266,939 / 20 (99.99%)]
40.5mm - 41.4mm 40.5mm - 41.4mm = 1
[1 (0.00% / 0.00%)] [266,940 / 17 (99.99%)]
41.5mm - 42.4mm 41.5mm - 42.4mm = 5
[5 (0.00% / 0.00%)] [266,945 / 16 (100.00%)]
42.5mm - 43.4mm 42.5mm - 43.4mm = 1
[1 (0.00% / 0.00%)] [266,946 / 11 (100.00%)]
45.5mm - 46.4mm 45.5mm - 46.4mm = 2
[2 (0.00% / 0.00%)] [266,948 / 10 (100.00%)]
48.5mm - 49.4mm 48.5mm - 49.4mm = 2
[2 (0.00% / 0.00%)] [266,950 / 8 (100.00%)]
49.5mm - 50.4mm 49.5mm - 50.4mm = 2
[2 (0.00% / 0.00%)] [266,952 / 6 (100.00%)]
51.5mm - 52.4mm 51.5mm - 52.4mm = 1
[1 (0.00% / 0.00%)] [266,953 / 4 (100.00%)]
55.5mm - 56.4mm 55.5mm - 56.4mm = 1
[1 (0.00% / 0.00%)] [266,954 / 3 (100.00%)]
70.5mm - 71.4mm 70.5mm - 71.4mm = 1
[1 (0.00% / 0.00%)] [266,955 / 2 (100.00%)]
78.5mm - 79.4mm 78.5mm - 79.4mm = 1
[1 (0.00% / 0.00%)] [266,956 / 1 (100.00%)]

Missing observations (31 / 0.01%)

Wind Direction

Calm Calm = 5,014
[5,014 (1.88% / 1.88%)] [0 / 0 (NA)]
NNE NNE = 20,268
[20,268 (7.59% / 7.59%)] [0 / 0 (NA)]
NE NE = 22,292
[22,292 (8.35% / 8.35%)] [0 / 0 (NA)]
ENE ENE = 31,064
[31,064 (11.64% / 11.64%)] [0 / 0 (NA)]
E E = 17,124
[17,124 (6.41% / 6.41%)] [0 / 0 (NA)]
ESE ESE = 17,686
[17,686 (6.62% / 6.63%)] [0 / 0 (NA)]
SE SE = 19,441
[19,441 (7.28% / 7.28%)] [0 / 0 (NA)]
SSE SSE = 17,025
[17,025 (6.38% / 6.38%)] [0 / 0 (NA)]
S S = 31,889
[31,889 (11.94% / 11.95%)] [0 / 0 (NA)]
SSW SSW = 15,599
[15,599 (5.84% / 5.84%)] [0 / 0 (NA)]
SW SW = 8,618
[8,618 (3.23% / 3.23%)] [0 / 0 (NA)]
WSW WSW = 2,775
[2,775 (1.04% / 1.04%)] [0 / 0 (NA)]
W W = 2,647
[2,647 (0.99% / 0.99%)] [0 / 0 (NA)]
WNW WNW = 5,731
[5,731 (2.15% / 2.15%)] [0 / 0 (NA)]
NW NW = 19,225
[19,225 (7.20% / 7.20%)] [0 / 0 (NA)]
NNW NNW = 14,027
[14,027 (5.25% / 5.25%)] [0 / 0 (NA)]
N N = 16,523
[16,523 (6.19% / 6.19%)] [0 / 0 (NA)]

Missing observations (39 / 0.01%)

Wind Speed

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 5,622
[5,622 (2.11% / 2.11%)] [5,622 / 266,956 (2.11%)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 41,028
[41,028 (15.37% / 15.37%)] [46,650 / 261,334 (17.47%)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 55,998
[55,998 (20.97% / 20.98%)] [102,648 / 220,306 (38.45%)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 59,072
[59,072 (22.13% / 22.13%)] [161,720 / 164,308 (60.58%)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 45,508
[45,508 (17.05% / 17.05%)] [207,228 / 105,236 (77.63%)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 27,044
[27,044 (10.13% / 10.13%)] [234,272 / 59,728 (87.76%)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 15,089
[15,089 (5.65% / 5.65%)] [249,361 / 32,684 (93.41%)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 8,385
[8,385 (3.14% / 3.14%)] [257,746 / 17,595 (96.55%)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 4,333
[4,333 (1.62% / 1.62%)] [262,079 / 9,210 (98.17%)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 2,224
[2,224 (0.83% / 0.83%)] [264,303 / 4,877 (99.01%)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 1,188
[1,188 (0.44% / 0.45%)] [265,491 / 2,653 (99.45%)]
10.5m/s - 11.4m/s 10.5m/s - 11.4m/s = 614
[614 (0.23% / 0.23%)] [266,105 / 1,465 (99.68%)]
11.5m/s - 12.4m/s 11.5m/s - 12.4m/s = 329
[329 (0.12% / 0.12%)] [266,434 / 851 (99.80%)]
12.5m/s - 13.4m/s 12.5m/s - 13.4m/s = 198
[198 (0.07% / 0.07%)] [266,632 / 522 (99.88%)]
13.5m/s - 14.4m/s 13.5m/s - 14.4m/s = 104
[104 (0.04% / 0.04%)] [266,736 / 324 (99.92%)]
14.5m/s - 15.4m/s 14.5m/s - 15.4m/s = 59
[59 (0.02% / 0.02%)] [266,795 / 220 (99.94%)]
15.5m/s - 16.4m/s 15.5m/s - 16.4m/s = 42
[42 (0.02% / 0.02%)] [266,837 / 161 (99.96%)]
16.5m/s - 17.4m/s 16.5m/s - 17.4m/s = 27
[27 (0.01% / 0.01%)] [266,864 / 119 (99.97%)]
17.5m/s - 18.4m/s 17.5m/s - 18.4m/s = 19
[19 (0.01% / 0.01%)] [266,883 / 92 (99.97%)]
18.5m/s - 19.4m/s 18.5m/s - 19.4m/s = 15
[15 (0.01% / 0.01%)] [266,898 / 73 (99.98%)]
19.5m/s - 20.4m/s 19.5m/s - 20.4m/s = 17
[17 (0.01% / 0.01%)] [266,915 / 58 (99.98%)]
20.5m/s - 21.4m/s 20.5m/s - 21.4m/s = 10
[10 (0.00% / 0.00%)] [266,925 / 41 (99.99%)]
21.5m/s - 22.4m/s 21.5m/s - 22.4m/s = 4
[4 (0.00% / 0.00%)] [266,929 / 31 (99.99%)]
22.5m/s - 23.4m/s 22.5m/s - 23.4m/s = 6
[6 (0.00% / 0.00%)] [266,935 / 27 (99.99%)]
23.5m/s - 24.4m/s 23.5m/s - 24.4m/s = 5
[5 (0.00% / 0.00%)] [266,940 / 21 (99.99%)]
24.5m/s - 25.4m/s 24.5m/s - 25.4m/s = 5
[5 (0.00% / 0.00%)] [266,945 / 16 (100.00%)]
25.5m/s - 26.4m/s 25.5m/s - 26.4m/s = 2
[2 (0.00% / 0.00%)] [266,947 / 11 (100.00%)]
26.5m/s - 27.4m/s 26.5m/s - 27.4m/s = 2
[2 (0.00% / 0.00%)] [266,949 / 9 (100.00%)]
27.5m/s - 28.4m/s 27.5m/s - 28.4m/s = 3
[3 (0.00% / 0.00%)] [266,952 / 7 (100.00%)]
28.5m/s - 29.4m/s 28.5m/s - 29.4m/s = 4
[4 (0.00% / 0.00%)] [266,956 / 4 (100.00%)]

Missing observations (31 / 0.01%)

Temperature

9.5C - 10.4C 9.5C - 10.4C = 6
[6 (0.00% / 0.00%)] [6 / 266,939 (0.00%)]
10.5C - 11.4C 10.5C - 11.4C = 55
[55 (0.02% / 0.02%)] [61 / 266,933 (0.02%)]
11.5C - 12.4C 11.5C - 12.4C = 273
[273 (0.10% / 0.10%)] [334 / 266,878 (0.13%)]
12.5C - 13.4C 12.5C - 13.4C = 744
[744 (0.28% / 0.28%)] [1,078 / 266,605 (0.40%)]
13.5C - 14.4C 13.5C - 14.4C = 1,689
[1,689 (0.63% / 0.63%)] [2,767 / 265,861 (1.04%)]
14.5C - 15.4C 14.5C - 15.4C = 3,758
[3,758 (1.41% / 1.41%)] [6,525 / 264,172 (2.44%)]
15.5C - 16.4C 15.5C - 16.4C = 6,838
[6,838 (2.56% / 2.56%)] [13,363 / 260,414 (5.01%)]
16.5C - 17.4C 16.5C - 17.4C = 10,451
[10,451 (3.91% / 3.92%)] [23,814 / 253,576 (8.92%)]
17.5C - 18.4C 17.5C - 18.4C = 14,573
[14,573 (5.46% / 5.46%)] [38,387 / 243,125 (14.38%)]
18.5C - 19.4C 18.5C - 19.4C = 17,263
[17,263 (6.47% / 6.47%)] [55,650 / 228,552 (20.85%)]
19.5C - 20.4C 19.5C - 20.4C = 19,025
[19,025 (7.13% / 7.13%)] [74,675 / 211,289 (27.97%)]
20.5C - 21.4C 20.5C - 21.4C = 19,136
[19,136 (7.17% / 7.17%)] [93,811 / 192,264 (35.14%)]
21.5C - 22.4C 21.5C - 22.4C = 18,512
[18,512 (6.93% / 6.93%)] [112,323 / 173,128 (42.08%)]
22.5C - 23.4C 22.5C - 23.4C = 17,037
[17,037 (6.38% / 6.38%)] [129,360 / 154,616 (48.46%)]
23.5C - 24.4C 23.5C - 24.4C = 17,545
[17,545 (6.57% / 6.57%)] [146,905 / 137,579 (55.03%)]
24.5C - 25.4C 24.5C - 25.4C = 19,461
[19,461 (7.29% / 7.29%)] [166,366 / 120,034 (62.32%)]
25.5C - 26.4C 25.5C - 26.4C = 23,269
[23,269 (8.72% / 8.72%)] [189,635 / 100,573 (71.04%)]
26.5C - 27.4C 26.5C - 27.4C = 27,528
[27,528 (10.31% / 10.31%)] [217,163 / 77,304 (81.35%)]
27.5C - 28.4C 27.5C - 28.4C = 26,660
[26,660 (9.99% / 9.99%)] [243,823 / 49,776 (91.34%)]
28.5C - 29.4C 28.5C - 29.4C = 15,226
[15,226 (5.70% / 5.70%)] [259,049 / 23,116 (97.04%)]
29.5C - 30.4C 29.5C - 30.4C = 6,138
[6,138 (2.30% / 2.30%)] [265,187 / 7,890 (99.34%)]
30.5C - 31.4C 30.5C - 31.4C = 1,562
[1,562 (0.59% / 0.59%)] [266,749 / 1,752 (99.93%)]
31.5C - 32.4C 31.5C - 32.4C = 175
[175 (0.07% / 0.07%)] [266,924 / 190 (99.99%)]
32.5C - 33.4C 32.5C - 33.4C = 14
[14 (0.01% / 0.01%)] [266,938 / 15 (100.00%)]
33.5C - 34.4C 33.5C - 34.4C = 1
[1 (0.00% / 0.00%)] [266,939 / 1 (100.00%)]

Missing observations (48 / 0.02%)

Sunshine Duration

0.0h 0.0h = 174,058
[174,058 (65.19% / 65.26%)] [174,058 / 266,735 (65.26%)]
0.1h 0.1h = 8,550
[8,550 (3.20% / 3.21%)] [182,608 / 92,677 (68.46%)]
0.2h 0.2h = 6,299
[6,299 (2.36% / 2.36%)] [188,907 / 84,127 (70.82%)]
0.3h 0.3h = 5,586
[5,586 (2.09% / 2.09%)] [194,493 / 77,828 (72.92%)]
0.4h 0.4h = 5,846
[5,846 (2.19% / 2.19%)] [200,339 / 72,242 (75.11%)]
0.5h 0.5h = 6,076
[6,076 (2.28% / 2.28%)] [206,415 / 66,396 (77.39%)]
0.6h 0.6h = 6,745
[6,745 (2.53% / 2.53%)] [213,160 / 60,320 (79.91%)]
0.7h 0.7h = 7,538
[7,538 (2.82% / 2.83%)] [220,698 / 53,575 (82.74%)]
0.8h 0.8h = 8,558
[8,558 (3.21% / 3.21%)] [229,256 / 46,037 (85.95%)]
0.9h 0.9h = 11,013
[11,013 (4.12% / 4.13%)] [240,269 / 37,479 (90.08%)]
1.0h 1.0h = 26,466
[26,466 (9.91% / 9.92%)] [266,735 / 26,466 (100.00%)]

Missing observations (252 / 0.09%)