観測所番号 44261
都道府県 東京都 [ 地域ポータル ]
所在地
観測月数 332
観測回数 242,442
観測期間
期間 名前 緯度 経度 高度 風速計高さ
1974年11月01日 〜 1975年03月12日 八丈島 (ハチジョウジマ) 33.103N 139.783E 79m 0.0m
1975年03月13日 〜 1985年12月31日 八丈島 (ハチジョウジマ) 33.103N 139.783E 79m 13.6m
1986年01月01日 〜 2003年08月28日 八丈島 (ハチジョウジマ) 33.103N 139.783E 79m 13.6m
過去の大雨データ アメダス集中豪雨
気象災害報告
台風接近履歴
近隣観測所
番号 名前 距離 方位
44262 八重見ヶ原(東京都) 1.34km 7度
44263 八丈島(東京都) 2.16km 347度

全期間統計

降水量

0.0mm - 0.4mm 0.0mm - 0.4mm = 217,441
[217,441 (89.69% / 89.69%)] [217,441 / 242,436 (89.69)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 10,737
[10,737 (4.43% / 4.43%)] [228,178 / 24,995 (94.12)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 4,515
[4,515 (1.86% / 1.86%)] [232,693 / 14,258 (95.98)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 2,656
[2,656 (1.10% / 1.10%)] [235,349 / 9,743 (97.08)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 1,730
[1,730 (0.71% / 0.71%)] [237,079 / 7,087 (97.79)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 1,171
[1,171 (0.48% / 0.48%)] [238,250 / 5,357 (98.27)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 857
[857 (0.35% / 0.35%)] [239,107 / 4,186 (98.63)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 651
[651 (0.27% / 0.27%)] [239,758 / 3,329 (98.90)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 483
[483 (0.20% / 0.20%)] [240,241 / 2,678 (99.09)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 383
[383 (0.16% / 0.16%)] [240,624 / 2,195 (99.25)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 300
[300 (0.12% / 0.12%)] [240,924 / 1,812 (99.38)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 222
[222 (0.09% / 0.09%)] [241,146 / 1,512 (99.47)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 206
[206 (0.08% / 0.08%)] [241,352 / 1,290 (99.55)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 155
[155 (0.06% / 0.06%)] [241,507 / 1,084 (99.62)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 118
[118 (0.05% / 0.05%)] [241,625 / 929 (99.67)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 109
[109 (0.04% / 0.04%)] [241,734 / 811 (99.71)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 95
[95 (0.04% / 0.04%)] [241,829 / 702 (99.75)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 77
[77 (0.03% / 0.03%)] [241,906 / 607 (99.78)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 61
[61 (0.03% / 0.03%)] [241,967 / 530 (99.81)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 38
[38 (0.02% / 0.02%)] [242,005 / 469 (99.82)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 41
[41 (0.02% / 0.02%)] [242,046 / 431 (99.84)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 49
[49 (0.02% / 0.02%)] [242,095 / 390 (99.86)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 45
[45 (0.02% / 0.02%)] [242,140 / 341 (99.88)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 33
[33 (0.01% / 0.01%)] [242,173 / 296 (99.89)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 28
[28 (0.01% / 0.01%)] [242,201 / 263 (99.90)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 25
[25 (0.01% / 0.01%)] [242,226 / 235 (99.91)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 22
[22 (0.01% / 0.01%)] [242,248 / 210 (99.92)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 19
[19 (0.01% / 0.01%)] [242,267 / 188 (99.93)]
27.5mm - 28.4mm 27.5mm - 28.4mm = 24
[24 (0.01% / 0.01%)] [242,291 / 169 (99.94)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 15
[15 (0.01% / 0.01%)] [242,306 / 145 (99.95)]
29.5mm - 30.4mm 29.5mm - 30.4mm = 17
[17 (0.01% / 0.01%)] [242,323 / 130 (99.95)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 13
[13 (0.01% / 0.01%)] [242,336 / 113 (99.96)]
31.5mm - 32.4mm 31.5mm - 32.4mm = 10
[10 (0.00% / 0.00%)] [242,346 / 100 (99.96)]
32.5mm - 33.4mm 32.5mm - 33.4mm = 7
[7 (0.00% / 0.00%)] [242,353 / 90 (99.97)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 8
[8 (0.00% / 0.00%)] [242,361 / 83 (99.97)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 7
[7 (0.00% / 0.00%)] [242,368 / 75 (99.97)]
35.5mm - 36.4mm 35.5mm - 36.4mm = 6
[6 (0.00% / 0.00%)] [242,374 / 68 (99.97)]
36.5mm - 37.4mm 36.5mm - 37.4mm = 6
[6 (0.00% / 0.00%)] [242,380 / 62 (99.98)]
37.5mm - 38.4mm 37.5mm - 38.4mm = 2
[2 (0.00% / 0.00%)] [242,382 / 56 (99.98)]
38.5mm - 39.4mm 38.5mm - 39.4mm = 8
[8 (0.00% / 0.00%)] [242,390 / 54 (99.98)]
39.5mm - 40.4mm 39.5mm - 40.4mm = 7
[7 (0.00% / 0.00%)] [242,397 / 46 (99.98)]
40.5mm - 41.4mm 40.5mm - 41.4mm = 4
[4 (0.00% / 0.00%)] [242,401 / 39 (99.99)]
41.5mm - 42.4mm 41.5mm - 42.4mm = 6
[6 (0.00% / 0.00%)] [242,407 / 35 (99.99)]
42.5mm - 43.4mm 42.5mm - 43.4mm = 3
[3 (0.00% / 0.00%)] [242,410 / 29 (99.99)]
43.5mm - 44.4mm 43.5mm - 44.4mm = 3
[3 (0.00% / 0.00%)] [242,413 / 26 (99.99)]
44.5mm - 45.4mm 44.5mm - 45.4mm = 1
[1 (0.00% / 0.00%)] [242,414 / 23 (99.99)]
45.5mm - 46.4mm 45.5mm - 46.4mm = 2
[2 (0.00% / 0.00%)] [242,416 / 22 (99.99)]
46.5mm - 47.4mm 46.5mm - 47.4mm = 1
[1 (0.00% / 0.00%)] [242,417 / 20 (99.99)]
47.5mm - 48.4mm 47.5mm - 48.4mm = 1
[1 (0.00% / 0.00%)] [242,418 / 19 (99.99)]
48.5mm - 49.4mm 48.5mm - 49.4mm = 1
[1 (0.00% / 0.00%)] [242,419 / 18 (99.99)]
49.5mm - 50.4mm 49.5mm - 50.4mm = 1
[1 (0.00% / 0.00%)] [242,420 / 17 (99.99)]
50.5mm - 51.4mm 50.5mm - 51.4mm = 1
[1 (0.00% / 0.00%)] [242,421 / 16 (99.99)]
52.5mm - 53.4mm 52.5mm - 53.4mm = 2
[2 (0.00% / 0.00%)] [242,423 / 15 (99.99)]
54.5mm - 55.4mm 54.5mm - 55.4mm = 3
[3 (0.00% / 0.00%)] [242,426 / 13 (100.00)]
55.5mm - 56.4mm 55.5mm - 56.4mm = 1
[1 (0.00% / 0.00%)] [242,427 / 10 (100.00)]
58.5mm - 59.4mm 58.5mm - 59.4mm = 1
[1 (0.00% / 0.00%)] [242,428 / 9 (100.00)]
61.5mm - 62.4mm 61.5mm - 62.4mm = 1
[1 (0.00% / 0.00%)] [242,429 / 8 (100.00)]
63.5mm - 64.4mm 63.5mm - 64.4mm = 2
[2 (0.00% / 0.00%)] [242,431 / 7 (100.00)]
64.5mm - 65.4mm 64.5mm - 65.4mm = 1
[1 (0.00% / 0.00%)] [242,432 / 5 (100.00)]
65.5mm - 66.4mm 65.5mm - 66.4mm = 2
[2 (0.00% / 0.00%)] [242,434 / 4 (100.00)]
75.5mm - 76.4mm 75.5mm - 76.4mm = 1
[1 (0.00% / 0.00%)] [242,435 / 2 (100.00)]
119.5mm - 120.4mm 119.5mm - 120.4mm = 1
[1 (0.00% / 0.00%)] [242,436 / 1 (100.00)]

欠測回数 (6 / 0.00%)

風向

静穏 静穏 = 2,069
[2,069 (0.85% / 0.85%)]
北北東 北北東 = 4,079
[4,079 (1.68% / 1.68%)]
北東 北東 = 22,302
[22,302 (9.20% / 9.20%)]
東北東 東北東 = 37,668
[37,668 (15.54% / 15.54%)]
東 = 15,992
[15,992 (6.60% / 6.60%)]
東南東 東南東 = 5,163
[5,163 (2.13% / 2.13%)]
南東 南東 = 2,599
[2,599 (1.07% / 1.07%)]
南南東 南南東 = 3,663
[3,663 (1.51% / 1.51%)]
南 = 7,856
[7,856 (3.24% / 3.24%)]
南南西 南南西 = 11,617
[11,617 (4.79% / 4.79%)]
南西 南西 = 26,267
[26,267 (10.83% / 10.84%)]
西南西 西南西 = 17,443
[17,443 (7.19% / 7.20%)]
西 西 = 59,121
[59,121 (24.39% / 24.39%)]
西北西 西北西 = 19,875
[19,875 (8.20% / 8.20%)]
北西 北西 = 3,032
[3,032 (1.25% / 1.25%)]
北北西 北北西 = 1,776
[1,776 (0.73% / 0.73%)]
北 = 1,886
[1,886 (0.78% / 0.78%)]

欠測回数 (34 / 0.01%)

風速

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 2,069
[2,069 (0.85% / 0.85%)] [2,069 / 242,401 (0.85)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 14,421
[14,421 (5.95% / 5.95%)] [16,490 / 240,332 (6.80)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 25,217
[25,217 (10.40% / 10.40%)] [41,707 / 225,911 (17.21)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 27,570
[27,570 (11.37% / 11.37%)] [69,277 / 200,694 (28.58)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 30,119
[30,119 (12.42% / 12.43%)] [99,396 / 173,124 (41.00)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 30,095
[30,095 (12.41% / 12.42%)] [129,491 / 143,005 (53.42)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 27,685
[27,685 (11.42% / 11.42%)] [157,176 / 112,910 (64.84)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 24,138
[24,138 (9.96% / 9.96%)] [181,314 / 85,225 (74.80)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 19,352
[19,352 (7.98% / 7.98%)] [200,666 / 61,087 (82.78)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 14,774
[14,774 (6.09% / 6.09%)] [215,440 / 41,735 (88.88)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 10,263
[10,263 (4.23% / 4.23%)] [225,703 / 26,961 (93.11)]
10.5m/s - 11.4m/s 10.5m/s - 11.4m/s = 6,705
[6,705 (2.77% / 2.77%)] [232,408 / 16,698 (95.88)]
11.5m/s - 12.4m/s 11.5m/s - 12.4m/s = 4,179
[4,179 (1.72% / 1.72%)] [236,587 / 9,993 (97.60)]
12.5m/s - 13.4m/s 12.5m/s - 13.4m/s = 2,471
[2,471 (1.02% / 1.02%)] [239,058 / 5,814 (98.62)]
13.5m/s - 14.4m/s 13.5m/s - 14.4m/s = 1,453
[1,453 (0.60% / 0.60%)] [240,511 / 3,343 (99.22)]
14.5m/s - 15.4m/s 14.5m/s - 15.4m/s = 840
[840 (0.35% / 0.35%)] [241,351 / 1,890 (99.57)]
15.5m/s - 16.4m/s 15.5m/s - 16.4m/s = 460
[460 (0.19% / 0.19%)] [241,811 / 1,050 (99.76)]
16.5m/s - 17.4m/s 16.5m/s - 17.4m/s = 277
[277 (0.11% / 0.11%)] [242,088 / 590 (99.87)]
17.5m/s - 18.4m/s 17.5m/s - 18.4m/s = 120
[120 (0.05% / 0.05%)] [242,208 / 313 (99.92)]
18.5m/s - 19.4m/s 18.5m/s - 19.4m/s = 82
[82 (0.03% / 0.03%)] [242,290 / 193 (99.95)]
19.5m/s - 20.4m/s 19.5m/s - 20.4m/s = 42
[42 (0.02% / 0.02%)] [242,332 / 111 (99.97)]
20.5m/s - 21.4m/s 20.5m/s - 21.4m/s = 35
[35 (0.01% / 0.01%)] [242,367 / 69 (99.99)]
21.5m/s - 22.4m/s 21.5m/s - 22.4m/s = 11
[11 (0.00% / 0.00%)] [242,378 / 34 (99.99)]
22.5m/s - 23.4m/s 22.5m/s - 23.4m/s = 7
[7 (0.00% / 0.00%)] [242,385 / 23 (99.99)]
23.5m/s - 24.4m/s 23.5m/s - 24.4m/s = 7
[7 (0.00% / 0.00%)] [242,392 / 16 (100.00)]
24.5m/s - 25.4m/s 24.5m/s - 25.4m/s = 3
[3 (0.00% / 0.00%)] [242,395 / 9 (100.00)]
26.5m/s - 27.4m/s 26.5m/s - 27.4m/s = 2
[2 (0.00% / 0.00%)] [242,397 / 6 (100.00)]
27.5m/s - 28.4m/s 27.5m/s - 28.4m/s = 2
[2 (0.00% / 0.00%)] [242,399 / 4 (100.00)]
28.5m/s - 29.4m/s 28.5m/s - 29.4m/s = 1
[1 (0.00% / 0.00%)] [242,400 / 2 (100.00)]
29.5m/s - 30.4m/s 29.5m/s - 30.4m/s = 1
[1 (0.00% / 0.00%)] [242,401 / 1 (100.00)]

欠測回数 (41 / 0.02%)

気温

-1.5℃ - -0.6℃ -1.5℃ - -0.6℃ = 3
[3 (0.00% / 0.00%)] [3 / 242,439 (0.00)]
-0.5℃ - 0.4℃ -0.5℃ - 0.4℃ = 13
[13 (0.01% / 0.01%)] [16 / 242,436 (0.01)]
0.5℃ - 1.4℃ 0.5℃ - 1.4℃ = 33
[33 (0.01% / 0.01%)] [49 / 242,423 (0.02)]
1.5℃ - 2.4℃ 1.5℃ - 2.4℃ = 82
[82 (0.03% / 0.03%)] [131 / 242,390 (0.05)]
2.5℃ - 3.4℃ 2.5℃ - 3.4℃ = 185
[185 (0.08% / 0.08%)] [316 / 242,308 (0.13)]
3.5℃ - 4.4℃ 3.5℃ - 4.4℃ = 419
[419 (0.17% / 0.17%)] [735 / 242,123 (0.30)]
4.5℃ - 5.4℃ 4.5℃ - 5.4℃ = 1,049
[1,049 (0.43% / 0.43%)] [1,784 / 241,704 (0.74)]
5.5℃ - 6.4℃ 5.5℃ - 6.4℃ = 2,482
[2,482 (1.02% / 1.02%)] [4,266 / 240,655 (1.76)]
6.5℃ - 7.4℃ 6.5℃ - 7.4℃ = 4,346
[4,346 (1.79% / 1.79%)] [8,612 / 238,173 (3.55)]
7.5℃ - 8.4℃ 7.5℃ - 8.4℃ = 6,093
[6,093 (2.51% / 2.51%)] [14,705 / 233,827 (6.07)]
8.5℃ - 9.4℃ 8.5℃ - 9.4℃ = 7,651
[7,651 (3.16% / 3.16%)] [22,356 / 227,734 (9.22)]
9.5℃ - 10.4℃ 9.5℃ - 10.4℃ = 8,827
[8,827 (3.64% / 3.64%)] [31,183 / 220,083 (12.86)]
10.5℃ - 11.4℃ 10.5℃ - 11.4℃ = 9,502
[9,502 (3.92% / 3.92%)] [40,685 / 211,256 (16.78)]
11.5℃ - 12.4℃ 11.5℃ - 12.4℃ = 10,292
[10,292 (4.25% / 4.25%)] [50,977 / 201,754 (21.03)]
12.5℃ - 13.4℃ 12.5℃ - 13.4℃ = 10,436
[10,436 (4.30% / 4.30%)] [61,413 / 191,462 (25.33)]
13.5℃ - 14.4℃ 13.5℃ - 14.4℃ = 10,705
[10,705 (4.42% / 4.42%)] [72,118 / 181,026 (29.75)]
14.5℃ - 15.4℃ 14.5℃ - 15.4℃ = 10,619
[10,619 (4.38% / 4.38%)] [82,737 / 170,321 (34.13)]
15.5℃ - 16.4℃ 15.5℃ - 16.4℃ = 11,107
[11,107 (4.58% / 4.58%)] [93,844 / 159,702 (38.71)]
16.5℃ - 17.4℃ 16.5℃ - 17.4℃ = 11,375
[11,375 (4.69% / 4.69%)] [105,219 / 148,595 (43.40)]
17.5℃ - 18.4℃ 17.5℃ - 18.4℃ = 12,083
[12,083 (4.98% / 4.98%)] [117,302 / 137,220 (48.38)]
18.5℃ - 19.4℃ 18.5℃ - 19.4℃ = 12,452
[12,452 (5.14% / 5.14%)] [129,754 / 125,137 (53.52)]
19.5℃ - 20.4℃ 19.5℃ - 20.4℃ = 12,283
[12,283 (5.07% / 5.07%)] [142,037 / 112,685 (58.59)]
20.5℃ - 21.4℃ 20.5℃ - 21.4℃ = 12,822
[12,822 (5.29% / 5.29%)] [154,859 / 100,402 (63.88)]
21.5℃ - 22.4℃ 21.5℃ - 22.4℃ = 12,398
[12,398 (5.11% / 5.11%)] [167,257 / 87,580 (68.99)]
22.5℃ - 23.4℃ 22.5℃ - 23.4℃ = 12,543
[12,543 (5.17% / 5.17%)] [179,800 / 75,182 (74.16)]
23.5℃ - 24.4℃ 23.5℃ - 24.4℃ = 12,733
[12,733 (5.25% / 5.25%)] [192,533 / 62,639 (79.42)]
24.5℃ - 25.4℃ 24.5℃ - 25.4℃ = 13,313
[13,313 (5.49% / 5.49%)] [205,846 / 49,906 (84.91)]
25.5℃ - 26.4℃ 25.5℃ - 26.4℃ = 13,331
[13,331 (5.50% / 5.50%)] [219,177 / 36,593 (90.41)]
26.5℃ - 27.4℃ 26.5℃ - 27.4℃ = 11,130
[11,130 (4.59% / 4.59%)] [230,307 / 23,262 (95.00)]
27.5℃ - 28.4℃ 27.5℃ - 28.4℃ = 6,397
[6,397 (2.64% / 2.64%)] [236,704 / 12,132 (97.63)]
28.5℃ - 29.4℃ 28.5℃ - 29.4℃ = 4,071
[4,071 (1.68% / 1.68%)] [240,775 / 5,735 (99.31)]
29.5℃ - 30.4℃ 29.5℃ - 30.4℃ = 1,380
[1,380 (0.57% / 0.57%)] [242,155 / 1,664 (99.88)]
30.5℃ - 31.4℃ 30.5℃ - 31.4℃ = 258
[258 (0.11% / 0.11%)] [242,413 / 284 (99.99)]
31.5℃ - 32.4℃ 31.5℃ - 32.4℃ = 24
[24 (0.01% / 0.01%)] [242,437 / 26 (100.00)]
32.5℃ - 33.4℃ 32.5℃ - 33.4℃ = 2
[2 (0.00% / 0.00%)] [242,439 / 2 (100.00)]

欠測回数 (3 / 0.00%)

日照時間

0.0h 0.0h = 169,671
[169,671 (69.98% / 70.91%)] [169,671 / 239,284 (70.91)]
0.1h 0.1h = 8,325
[8,325 (3.43% / 3.48%)] [177,996 / 69,613 (74.39)]
0.2h 0.2h = 6,351
[6,351 (2.62% / 2.65%)] [184,347 / 61,288 (77.04)]
0.3h 0.3h = 5,382
[5,382 (2.22% / 2.25%)] [189,729 / 54,937 (79.29)]
0.4h 0.4h = 4,942
[4,942 (2.04% / 2.07%)] [194,671 / 49,555 (81.36)]
0.5h 0.5h = 4,711
[4,711 (1.94% / 1.97%)] [199,382 / 44,613 (83.32)]
0.6h 0.6h = 4,682
[4,682 (1.93% / 1.96%)] [204,064 / 39,902 (85.28)]
0.7h 0.7h = 4,638
[4,638 (1.91% / 1.94%)] [208,702 / 35,220 (87.22)]
0.8h 0.8h = 5,059
[5,059 (2.09% / 2.11%)] [213,761 / 30,582 (89.33)]
0.9h 0.9h = 6,379
[6,379 (2.63% / 2.67%)] [220,140 / 25,523 (92.00)]
1.0h 1.0h = 19,144
[19,144 (7.90% / 8.00%)] [239,284 / 19,144 (100.00)]

欠測回数 (3,158 / 1.30%)