観測開始からの毎月の値
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八丈島（東京都) 降水量の月合計値（mm）
| 年 | 1月 | 2月 | 3月 | 4月 | 5月 | 6月 | 7月 | 8月 | 9月 | 10月 | 11月 | 12月 | 年の値 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 161.8 ] | 263.7 | 204.1 | 352.2 | 660.2 | 386.5 | 188.7 | 2217.2 ] | ||||||
| 225.3 | 220.4 | 178.4 | 155.2 | 197.0 | 400.8 | 489.2 | 498.6 | 456.5 | 331.3 | 356.5 | 83.3 | 3592.5 | |
| 132.5 | 117.1 | 569.8 | 489.9 | 471.0 | 215.9 | 393.9 | 478.4 | 916.5 | 650.1 | 198.2 | 176.3 | 4809.6 | |
| 390.5 | 105.7 | 328.4 | 226.7 | 161.5 | 502.4 | 345.0 | 174.0 | 393.1 | 375.2 | 178.3 | 73.5 | 3254.3 | |
| 590.3 | 189.7 | 292.9 | 312.1 | 218.1 | 254.4 | 389.3 | 559.6 | 692.1 | 1095.0 | 204.5 | 91.3 | 4889.3 | |
| 307.3 | 167.3 | 400.0 | 245.7 | 150.1 | 230.1 | 168.5 | 334.7 | 113.9 | 379.0 | 165.4 | 87.9 | 2749.9 | |
| 137.0 | 177.0 | 263.4 | 155.2 | 197.6 | 536.2 | 276.6 | 152.5 | 513.9 | 537.7 | 331.1 | 314.4 | 3592.6 | |
| 83.6 | 181.2 | 122.5 | 233.4 | 270.6 | 263.4 | 227.0 | 538.6 | 530.1 | 689.3 | 343.3 | 133.7 | 3616.7 | |
| 180.4 | 229.1 | 371.2 | 193.2 | 246.6 | 153.7 | 119.4 | 405.9 | 162.6 | 488.0 | 291.7 | 170.6 | 3012.4 | |
| 161.1 | 165.7 | 188.2 | 360.3 | 258.0 | 188.8 | 57.1 | 254.0 | 144.5 | 798.8 | 250.6 | 135.5 | 2962.6 | |
| 144.2 | 363.8 | 185.8 | 211.4 | 322.5 | 153.8 | 384.6 | 527.9 | 216.1 | 967.1 | 600.7 | 346.8 | 4424.7 | |
| 169.7 | 205.2 | 202.1 | 159.3 | 172.9 | 393.1 | 143.7 | 249.1 | 250.1 | 481.9 | 127.2 | 103.0 | 2657.3 | |
| 68.6 | 215.4 | 349.7 | 189.3 | 284.2 | 366.5 | 78.1 | 135.6 | 244.4 | 212.6 | 279.3 | 193.2 | 2616.9 | |
| 241.1 | 406.3 | 200.8 | 117.0 | 307.3 | 286.5 | 287.1 | 436.1 | 398.3 | 426.3 | 895.9 | 161.9 | 4164.6 | |
| 119.5 | 213.2 | 310.7 | 259.0 | 262.3 | 368.2 | 123.1 | 160.1 | 378.1 | 393.1 | 365.6 | 355.5 | 3308.4 | |
| 117.4 | 217.7 | 227.0 | 183.5 | 339.1 | 614.0 | 263.9 | 141.7 | 536.9 | 770.2 | 95.5 | 107.4 | 3614.3 | |
| 217.0 | 348.5 | 223.8 | 198.2 | 182.2 | 204.4 | 112.4 | 209.0 | 267.7 | 647.0 | 385.2 | 105.5 | 3100.9 | |
| 219.7 | 184.1 | 127.0 | 290.2 | 307.4 | 325.6 | 384.7 | 52.0 | 545.6 | 222.4 | 189.0 | 146.1 | 2993.8 | |
| 164.7 | 199.3 | 102.6 | 235.3 | 365.0 | 317.0 | 42.5 | 179.6 | 491.1 | 606.3 | 88.3 | 206.6 | 2998.3 | |
| 171.9 | 313.2 | 204.5 | 410.3 | 130.6 | 150.2 | 292.3 | 531.7 | 398.6 | 678.8 | 267.6 | 174.3 | 3724.0 | |
| 126.4 | 188.7 | 300.8 | 99.5 | 125.5 | 164.4 | 207.2 | 124.0 | 90.2 | 262.3 | 164.5 | 227.1 | 2080.6 | |
| 96.4 | 261.0 | 435.1 | 262.8 | 190.3 | 334.0 | 29.6 | 277.9 | 527.9 | 275.2 | 245.9 | 258.4 | 3194.5 | |
| 240.9 | 250.8 | 316.8 | 226.1 | 311.4 | 402.6 | 280.6 | 321.5 | 288.7 | 853.9 | 255.6 | 257.1 | 4006.0 | |
| 163.7 | 41.2 | 239.9 | 178.2 | 485.8 | 246.6 | 70.7 | 154.6 | 852.8 | 556.8 | 378.5 | 304.5 | 3673.3 | |
| 197.4 | 611.0 | 289.5 | 513.7 | 281.9 | 161.5 | 235.2 | 27.2 | 296.3 | 453.0 | 160.1 | 323.5 | 3550.3 | |
| 292.5 | 339.3 | 138.7 | 195.0 | 334.7 | 350.9 | 530.1 | 132.5 | 429.7 | 576.8 | 479.7 | 316.1 | 4116.0 | |
| 260.6 | 205.6 | 153.0 | 201.8 | 186.9 | 323.2 | 55.5 | 110.1 | 241.8 | 560.3 | 256.2 | 355.3 | 2910.3 | |
| 166.6 | 116.1 | 259.9 | 152.1 | 113.0 | 235.2 | 90.8 | 127.5 | 332.7 | 443.1 | 257.7 | 324.9 | 2619.6 | |
| 181.5 | 36.2 | 131.2 | 203.8 | 144.7 | 192.4 | 370.9 | 216.1 | 250.2 | 935.0 | 215.3 | 364.2 | 3241.5 | |
| 285.3 | 205.8 | 506.1 | 290.5 | 108.3 | 211.2 | 266.6 | 129.1 | 766.5 | 262.4 | 287.8 | 287.2 | 3606.8 | |
| 117.6 | 114.2 | 101.6 | 448.9 | 382.9 | 112.2 | 279.7 | 92.0 | 333.8 | 1065.8 | 312.0 | 328.5 | 3689.2 | |
| 207.2 | 452.6 | 253.6 | 338.0 | 137.9 | 249.4 | 17.0 | 52.7 | 250.4 | 420.0 | 339.7 | 86.2 | 2804.7 | |
| 135.2 | 120.8 | 318.1 | 189.2 | 212.3 | 267.0 | 121.7 | 574.8 | 805.0 | 514.1 | 294.7 | 203.9 | 3756.8 | |
| 159.0 | 137.4 | 298.4 | 412.8 | 346.1 | 250.8 | 168.3 | 218.5 | 216.3 | 796.9 | 295.4 | 149.9 | 3449.8 | |
| 58.9 | 131.4 | 219.6 | 119.2 | 45.9 | 152.7 | 145.9 | 252.8 | 894.9 | 370.6 | 295.2 | 124.9 | 2812.0 | |
| 150.1 | 204.4 | 328.6 | 97.8 | 265.2 | 363.9 | 467.7 | 216.9 | 851.8 | 122.7 | 587.9 | 137.5 | 3794.5 | |
| 111.4 | 260.5 | 231.9 | 142.9 | 275.2 | 687.6 | 35.2 | 129.3 | 149.3 | 355.0 | 321.4 | 183.2 | 2882.9 | |
| 90.4 | 187.9 | 307.1 | 281.1 | 230.4 | 236.7 | 172.7 | 167.6 | 116.3 | 320.9 | 320.2 | 98.8 | 2530.1 | |
| 89.1 | 168.3 | 345.9 | 200.7 | 138.6 | 280.0 | 179.7 | 359.9 | 161.6 | 519.8 | 554.7 | 92.6 | 3090.9 | |
| 79.8 | 266.9 | 114.1 | 77.5 | 279.1 | 510.8 | 218.6 | 73.0 | 324.2 | 369.1 | 343.7 | 125.8 | 2782.6 | |
| 162.5 | 139.7 | 285.3 | 256.6 | 503.0 | 118.6 | 101.2 | 116.5 | 250.4 | 425.7 | 631.2 | 94.9 | 3085.6 | |
| 226.3 | 83.6 | 95.8 | 94.6 | 219.5 | 413.5 | 59.0 | 79.4 | 147.7 | 742.6 | 137.6 | 168.6 | 2468.2 | |
| 172.9 | 174.6 | 362.9 | 253.1 | 394.0 | 448.4 | 142.7 | 617.3 | 205.7 | 302.1 | 300.9 | 166.2 | 3540.8 | |
| 93.6 | 136.0 | 258.7 | 177.2 | 126.5 | 465.1 | 273.1 | 225.8 | 228.4 | 815.3 | 813.2 | 197.7 | 3810.6 | |
| 265.9 | 230.0 | 199.8 | 220.9 | 280.9 | 296.2 | 92.0 | 532.3 | 314.3 | 531.4 | 440.3 | 206.8 | 3610.8 | |
| 308.3 | 408.6 | 148.8 | 207.2 | 192.4 | 484.9 | 161.8 | 87.5 | 474.7 | 394.0 | 141.1 | 234.3 | 3243.6 | |
| 187.4 | 224.1 | 291.6 | 491.7 | 255.0 | 391.2 | 390.2 | 241.4 | 496.9 | 230.2 | 517.9 | 183.5 | 3901.1 | |
| 240.9 | 205.5 | 266.4 | 232.1 | 310.4 | 472.5 | 41.6 | 645.6 | 341.3 | 416.6 | 247.4 | 235.5 | 3655.8 | |
| 633.2 | 219.9 | 333.4 | 205.8 | 286.8 | 382.6 | 246.2 | 163.0 | 411.0 | 440.6 | 608.0 | 170.2 | 4100.7 | |
| 161.8 | 115.3 | 347.0 | 412.7 | 385.0 | 376.2 | 74.2 | 326.2 | 347.6 | 1062.6 | 321.8 | 143.9 | 4074.3 | |
| 274.8 | 251.3 | 273.1 | 212.7 | 538.2 | 125.7 | 206.9 | 143.8 | 395.5 | 766.9 | 244.1 | 38.0 | 3471.0 | |
| 141.4 | 295.8 | 114.8 | 147.2 | 365.3 | 462.9 | 69.4 | 483.3 | 632.9 | 231.3 | 518.6 | 198.2 | 3661.1 | |
| 158.8 | 203.6 | 370.4 | 278.1 | 260.7 | 240.5 | 142.5 | 96.7 | 260.2 | 614.0 | 437.1 | 204.7 | 3267.3 | |
| 241.6 | 401.7 | 338.3 | 195.4 | 429.9 | 300.1 | 196.4 | 180.5 | 108.0 | 507.3 | 533.3 | 202.4 | 3634.9 | |
| 100.7 | 163.8 | 213.3 | 437.8 | 255.5 | 300.8 | 80.1 | 360.3 | 223.5 | 353.1 | 254.5 | 169.4 | 2912.8 | |
| 103.8 | 245.2 | 306.7 | 183.1 | 254.6 | 72.0 | 44.8 | 160.8 | 209.5 | 600.9 | 326.3 | 162.5 | 2670.2 | |
| 203.4 | 96.9 | 211.7 | 176.0 | 422.9 | 265.8 | 193.1 | 98.4 | 55.7 | 462.0 | 663.9 | 131.0 | 2980.8 | |
| 88.6 | 91.4 | 329.0 | 270.5 | 340.7 | 295.2 | 268.7 | 166.1 | 358.2 | 577.4 | 254.8 | 204.1 | 3244.7 | |
| 489.3 | 221.8 | 187.2 | 310.6 | 200.5 | 246.0 | 95.5 | 346.9 | 643.0 | 252.3 | 214.9 | 267.9 | 3475.9 | |
| 161.2 | 188.3 | 116.3 | 195.2 | 386.8 | 322.0 | 39.2 | 134.0 | 819.8 | 369.2 | 271.1 | 436.1 | 3439.2 | |
| 98.4 | 233.6 | 123.2 | 311.6 | 260.0 | 526.8 | 151.5 | 134.5 | 354.0 | 152.2 | 143.1 | 152.7 | 2641.6 | |
| 92.2 | 162.5 | 161.0 | 321.1 | 97.4 | 320.9 | 289.9 | 205.2 | 595.6 | 793.6 | 404.8 | 194.8 | 3639.0 | |
| 85.0 | 138.0 | 248.0 | 80.0 | 264.0 | 321.5 | 379.0 | 101.0 | 216.5 | 1053.0 | 83.5 | 211.0 | 3180.5 | |
| 182.0 | 332.5 | 239.0 | 194.5 | 249.5 | 307.0 | 330.5 | 37.5 | 182.0 | 266.0 | 207.0 | 82.0 | 2609.5 | |
| 74.5 | 33.5 | 146.0 | 414.0 | 201.0 | 477.0 | 292.0 | 300.0 | 207.0 | 483.0 | 355.0 | 123.5 | 3106.5 | |
| 100.5 | 103.5 | 113.0 | 109.5 | 164.5 | 404.0 | 91.0 | 121.5 | 307.5 | 711.5 | 163.5 | 229.0 | 2619.0 | |
| 405.5 | 389.0 | 268.5 | 352.5 | 235.0 | 280.0 | 196.0 | 76.0 | 76.0 | 293.0 | 187.5 | 230.0 | 2989.0 | |
| 263.5 | 165.0 | 281.0 | 350.5 | 316.0 | 269.0 | 62.0 | 46.5 | 440.0 | 337.5 | 226.0 | 91.5 | 2848.5 | |
| 129.0 | 177.5 | 328.5 | 146.0 | 129.5 | 262.0 | 324.0 | 136.0 | 271.0 | 273.0 | 264.5 | 187.0 | 2628.0 | |
| 334.5 | 247.5 | 115.0 | 245.0 | 292.0 | 586.5 | 135.0 | 377.5 | 315.0 | 402.5 | 426.0 | 326.0 | 3802.5 | |
| 70.0 | 199.5 | 437.0 | 169.5 | 323.5 | 448.0 | 152.0 | 130.5 | 251.0 | 521.5 | 245.5 | 196.0 | 3144.0 | |
| 84.5 | 107.5 | 226.5 | 163.0 | 252.0 | 496.0 | 114.5 | 471.0 | 471.5 | 226.5 | 227.5 | 112.0 | 2952.5 | |
| 271.0 | 114.5 | 236.0 | 263.5 | 302.5 | 253.5 | 66.5 | 52.5 | 449.5 | 446.5 | 285.5 | 185.5 | 2927.0 | |
| 199.0 | 149.0 | 254.5 | 303.5 | 197.5 | 199.5 | 403.0 | 632.5 | 645.5 | 520.5 | 530.0 | 124.0 | 4158.5 | |
| 287.5 | 97.5 | 244.5 | 141.0 | 228.5 | 175.5 | 267.0 | 335.0 | 646.5 | 254.5 | 119.5 | 76.5 | 2873.5 | |
| 79.5 | 166.5 | 424.5 | 263.0 | 269.5 | 316.5 | 85.0 | 324.5 | 294.0 | 241.0 | 182.5 | 79.0 | 2725.5 | |
| 150.0 | 120.5 | 227.5 | 175.5 | 192.5 | 451.5 | 311.5 | 283.5 | 398.5 | 711.5 | 200.0 | 172.0 | 3394.5 | |
| 184.5 | 275.5 | 258.5 | 234.5 | 135.5 | 401.0 | 207.5 | 194.5 | 221.5 | 248.0 | 142.5 | 116.0 | 2619.5 | |
| 86.0 | 89.0 | 271.0 | 158.0 | 207.0 | 379.0 | 32.5 | 31.5 | 169.0 | 531.0 | 189.0 | 173.0 | 2316.0 | |
| 56.0 | 198.0 | 426.0 | 533.0 | 222.0 | 533.5 | 65.5 | 153.5 | 261.0 | 386.0 | 107.0 | 193.0 | 3134.5 | |
| 124.0 | 166.5 | 420.0 | 244.5 | 298.5 | 331.5 | 230.0 | 160.0 | 198.0 | 402.0 | 230.0 | 141.0 | 2946.0 | |
| 171.0 | 129.0 | 245.0 | 166.5 | 154.0 | 413.5 | 345.0 | 209.0 | 556.0 | 404.5 | 347.0 | 338.5 | 3479.0 | |
| 111.0 | 179.0 | 374.5 | 262.0 | 160.0 | 505.5 | 170.0 | 275.0 | 322.0 | 805.0 | 94.0 | 23.5 | 3281.5 | |
| 360.0 | 156.5 | 238.5 | 250.0 | 455.5 | 297.5 | 218.0 | 98.5 | 102.0 | 561.5 | 306.5 | 174.0 | 3218.5 | |
| 209.5 | 416.5 | 269.0 | 175.0 | 263.0 | 350.5 | 116.0 | 328.0 | 285.0 | 416.5 | 257.0 | 64.5 | 3150.5 | |
| 129.5 | 98.5 | 176.5 | 217.0 | 239.5 | 500.5 | 195.5 | 183.0 | 713.5 | 1031.5 | 152.0 | 201.5 | 3838.5 | |
| 335.5 | 249.5 | 625.5 | 228.0 | 194.5 | 601.5 | 340.0 | 276.0 | 60.5 | 587.5 | 309.0 | 274.5 | 4082.0 | |
| 513.0 | 64.0 | 306.0 | 189.0 | 177.0 | 214.5 | 712.0 | 330.5 | 382.5 | 487.0 | 143.5 | 241.0 | 3760.0 | |
| 138.0 | 183.5 | 266.5 | 143.0 | 210.5 | 234.0 | 60.5 | 92.5 | 352.5 | 367.0 | 249.0 | 158.5 | 2455.5 | |
| 117.5 | 219.0 | 315.0 | 234.0 | 281.0 | 734.0 | 13.0 | 28.5 | 241.0 | 408.0 | 241.5 | 64.0 | 2896.5 | |
| 121.0 | 288.0 | 226.5 | 76.0 | 127.5 | 136.5 | 332.5 | 95.5 | 498.5 | 317.5 | 315.5 | 153.5 | 2688.5 | |
| 209.0 | 106.0 | 251.0 | 144.5 | 198.0 | 526.0 | 80.0 | 44.5 | 261.0 | 136.0 | 308.5 | 283.0 | 2547.5 | |
| 431.5 | 364.0 | 301.5 | 254.0 | 227.5 | 717.5 | 385.5 | 143.5 | 791.5 | 601.0 | 172.0 | 213.5 | 4603.0 | |
| 68.0 | 98.0 | 572.0 | 363.0 | 141.0 | 286.0 | 120.0 | 123.0 | 556.5 | 329.0 | 149.5 | 82.5 | 2888.5 | |
| 132.5 | 84.5 | 143.5 | 206.0 | 204.5 | 385.0 | 316.0 | 98.0 | 348.5 | 345.5 | 390.5 | 185.0 | 2839.5 | |
| 186.5 | 64.5 | 215.0 | 337.5 | 311.5 | 115.5 | 79.5 | 158.5 | 583.5 | 712.0 | 278.0 | 119.5 | 3161.5 | |
| 210.5 | 282.0 | 206.5 | 291.5 | 219.0 | 329.0 | 80.0 | 221.5 | 409.0 | 225.5 | 369.0 | 404.5 | 3248.0 | |
| 226.0 | 363.5 | 386.0 | 171.5 | 276.5 | 412.0 | 277.0 | 150.5 | 346.5 | 153.0 | 499.5 | 288.5 | 3550.5 | |
| 277.0 | 157.0 | 242.0 | 120.5 | 431.0 | 117.5 | 78.0 | 399.0 | 266.5 | 462.0 | 185.0 | 244.0 | 2979.5 | |
| 182.0 | 223.0 | 235.0 | 139.5 | 148.0 | 516.5 | 214.5 | 90.5 | 299.5 | 371.0 | 240.5 | 61.0 | 2721.0 | |
| 212.0 | 238.5 | 308.5 | 199.0 | 194.5 ) | 330.5 | 624.0 | 179.0 | 221.5 | 417.0 | 263.5 | 346.5 | 3534.5 | |
| 251.0 | 314.0 | 188.0 | 197.0 | 174.0 | 179.5 | 595.0 | 49.0 | 431.5 | 417.0 | 349.0 | 150.5 | 3295.5 | |
| 169.5 | 146.0 | 434.0 | 208.0 | 854.0 | 430.0 | 38.5 | 194.0 | 228.5 | 342.5 | 226.0 | 165.0 | 3436.0 | |
| 183.5 | 157.0 | 226.0 | 156.5 | 345.5 | 352.5 | 141.0 | 358.5 ) | 182.0 | 680.5 | 356.5 | 174.0 | 3313.5 | |
| 74.0 | 490.0 | 478.0 ) | 467.0 | 223.0 | 316.5 | 275.5 | 106.5 | 185.5 | 879.0 | 268.5 | 203.0 | 3966.5 | |
| 130.0 | 233.0 | 165.5 | 150.0 | 431.0 | 298.5 ) | 154.5 | 375.5 | 249.0 | 355.0 | 231.5 | 264.0 | 3037.5 | |
| 301.5 | 231.5 | 222.5 | 142.0 | 367.5 | 399.0 | 152.5 | 206.5 | 163.0 | 715.0 | 245.5 | 266.5 | 3413.0 | |
| 191.0 | 153.0 | 214.0 | 180.0 | 119.0 | 491.5 ) | 40.0 | 112.5 | 122.0 | 240.5 | 173.0 | 154.5 | 2191.0 | |
| 111.0 | 328.5 ) | 206.5 | 259.5 | 193.0 | 390.0 | 145.0 | 167.5 | 226.0 | 407.0 | 299.5 | 187.0 | 2920.5 | |
| 152.5 | 207.5 | 244.0 | 399.5 | 297.0 | 491.5 | 466.5 | 65.0 | 394.0 | 242.5 | 549.5 | 282.0 | 3791.5 | |
| 175.0 | 149.5 | 505.0 | 223.0 | 141.0 | 324.0 | 252.5 | 319.5 | 357.5 | 503.5 | 324.5 | 145.0 | 3420.0 | |
| 216.0 | 118.5 | 354.5 | 183.0 | 208.5 | 450.5 | 2.5 | 131.5 | 464.0 | 667.5 | 298.0 | 109.0 | 3203.5 | |
| 90.5 | 132.0 | 241.5 | 150.0 | 239.5 | 575.0 | 225.5 | 211.0 | 345.5 | 240.0 | 254.5 | 181.5 | 2886.5 | |
| 170.0 | 263.5 | 352.5 | 238.0 | 274.5 | 322.0 | 763.0 | 34.0 | 553.5 | 771.0 | 342.5 | 256.0 | 4340.5 | |
| 346.5 ) | 157.0 | 287.0 | 188.5 | 250.5 | 533.0 | 462.5 | 140.5 | 580.5 | 961.5 | 136.0 | 145.5 | 4189.0 | |
| 246.5 | 78.0 | 127.0 | 156.5 | 364.5 ) | 379.0 | 229.0 | 230.5 ) | 283.0 | 605.5 | 151.5 | 134.5 | 2985.5 | |
| 191.0 ) | 166.5 | 173.5 | 358.5 | 206.5 | 365.5 | 336.5 ) | 331.5 | 176.5 | 676.0 | 421.5 | 120.5 | 3524.0 | |
| 175.0 ) | 203.0 | 179.0 | 134.0 | 192.0 | 203.5 | 191.0 | 82.0 | 301.5 | 157.5 ) | 210.5 | 117.0 | 2146.0 | |
| 194.0 | 346.0 ] | 333.0 | 420.5 | 305.5 | 377.0 | 27.5 | 157.0 | 613.0 | 561.0 | 548.5 | 89.5 | 3972.5 ] | |
| 194.5 | 121.0 | 311.5 | 297.0 | 924.0 ] |
- 値欄の記号の説明
- 赤線は、観測場所を移転した場合、観測装置を変更した場合または観測の時間間隔を変更した場合に、その前後のデータが均質でないことを示します。
赤実線の前後では観測データや観測史上1位などの極値を比較できませんが、赤点線の前後では極値を比較できます。 - 最新の月のデータは稀に更新されない場合があります。年の数字をクリックして表示される「月ごとの値」もご確認ください。