観測所番号 45036
都道府県 千葉県 [ 地域ポータル ]
所在地
観測月数 284
観測回数 206,985
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 〜 1978年01月09日 佐原 (サワラ) 35.910N 140.492E 7m 0.0m
1978年01月10日 〜 1987年10月13日 佐原 (サワラ) 35.910N 140.492E 7m 6.5m
1987年10月14日 〜 1999年08月31日 佐原 (サワラ) 35.910N 140.492E 7m 6.5m
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
45081 香取(千葉県) 5.84km 171度
40406 鹿嶋(茨城県) 13.12km 63度
40391 江戸崎(茨城県) 16.48km 289度
45121 成田(千葉県) 18.96km 210度
45086 東庄(千葉県) 19.98km 119度
40426 龍ケ崎(茨城県) 25.37km 265度
45181 横芝光(千葉県) 28.09km 182度
40311 鉾田(茨城県) 28.80km 6度

全期間統計

降水量

0.0mm - 0.4mm 0.0mm - 0.4mm = 193,307
[193,307 (93.39% / 93.67%)] [193,307 / 206,371 (93.67%)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 6,994
[6,994 (3.38% / 3.39%)] [200,301 / 13,064 (97.06%)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 2,746
[2,746 (1.33% / 1.33%)] [203,047 / 6,070 (98.39%)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 1,223
[1,223 (0.59% / 0.59%)] [204,270 / 3,324 (98.98%)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 679
[679 (0.33% / 0.33%)] [204,949 / 2,101 (99.31%)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 391
[391 (0.19% / 0.19%)] [205,340 / 1,422 (99.50%)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 263
[263 (0.13% / 0.13%)] [205,603 / 1,031 (99.63%)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 186
[186 (0.09% / 0.09%)] [205,789 / 768 (99.72%)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 127
[127 (0.06% / 0.06%)] [205,916 / 582 (99.78%)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 99
[99 (0.05% / 0.05%)] [206,015 / 455 (99.83%)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 74
[74 (0.04% / 0.04%)] [206,089 / 356 (99.86%)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 60
[60 (0.03% / 0.03%)] [206,149 / 282 (99.89%)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 42
[42 (0.02% / 0.02%)] [206,191 / 222 (99.91%)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 28
[28 (0.01% / 0.01%)] [206,219 / 180 (99.93%)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 27
[27 (0.01% / 0.01%)] [206,246 / 152 (99.94%)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 26
[26 (0.01% / 0.01%)] [206,272 / 125 (99.95%)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 18
[18 (0.01% / 0.01%)] [206,290 / 99 (99.96%)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 12
[12 (0.01% / 0.01%)] [206,302 / 81 (99.97%)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 9
[9 (0.00% / 0.00%)] [206,311 / 69 (99.97%)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 7
[7 (0.00% / 0.00%)] [206,318 / 60 (99.97%)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 4
[4 (0.00% / 0.00%)] [206,322 / 53 (99.98%)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 6
[6 (0.00% / 0.00%)] [206,328 / 49 (99.98%)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 3
[3 (0.00% / 0.00%)] [206,331 / 43 (99.98%)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 7
[7 (0.00% / 0.00%)] [206,338 / 40 (99.98%)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 6
[6 (0.00% / 0.00%)] [206,344 / 33 (99.99%)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 2
[2 (0.00% / 0.00%)] [206,346 / 27 (99.99%)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 4
[4 (0.00% / 0.00%)] [206,350 / 25 (99.99%)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 2
[2 (0.00% / 0.00%)] [206,352 / 21 (99.99%)]
27.5mm - 28.4mm 27.5mm - 28.4mm = 1
[1 (0.00% / 0.00%)] [206,353 / 19 (99.99%)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 4
[4 (0.00% / 0.00%)] [206,357 / 18 (99.99%)]
29.5mm - 30.4mm 29.5mm - 30.4mm = 2
[2 (0.00% / 0.00%)] [206,359 / 14 (99.99%)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 2
[2 (0.00% / 0.00%)] [206,361 / 12 (100.00%)]
32.5mm - 33.4mm 32.5mm - 33.4mm = 2
[2 (0.00% / 0.00%)] [206,363 / 10 (100.00%)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 2
[2 (0.00% / 0.00%)] [206,365 / 8 (100.00%)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 1
[1 (0.00% / 0.00%)] [206,366 / 6 (100.00%)]
36.5mm - 37.4mm 36.5mm - 37.4mm = 2
[2 (0.00% / 0.00%)] [206,368 / 5 (100.00%)]
39.5mm - 40.4mm 39.5mm - 40.4mm = 1
[1 (0.00% / 0.00%)] [206,369 / 3 (100.00%)]
47.5mm - 48.4mm 47.5mm - 48.4mm = 1
[1 (0.00% / 0.00%)] [206,370 / 2 (100.00%)]
81.5mm - 82.4mm 81.5mm - 82.4mm = 1
[1 (0.00% / 0.00%)] [206,371 / 1 (100.00%)]

欠測回数 (614 / 0.30%)

風向

静穏 静穏 = 26,324
[26,324 (12.72% / 13.93%)] [0 / 0 (NA)]
北北東 北北東 = 11,104
[11,104 (5.36% / 5.88%)] [0 / 0 (NA)]
北東 北東 = 17,914
[17,914 (8.65% / 9.48%)] [0 / 0 (NA)]
東北東 東北東 = 18,410
[18,410 (8.89% / 9.74%)] [0 / 0 (NA)]
東 = 13,149
[13,149 (6.35% / 6.96%)] [0 / 0 (NA)]
東南東 東南東 = 6,716
[6,716 (3.24% / 3.55%)] [0 / 0 (NA)]
南東 南東 = 4,643
[4,643 (2.24% / 2.46%)] [0 / 0 (NA)]
南南東 南南東 = 7,331
[7,331 (3.54% / 3.88%)] [0 / 0 (NA)]
南 = 9,783
[9,783 (4.73% / 5.18%)] [0 / 0 (NA)]
南南西 南南西 = 7,988
[7,988 (3.86% / 4.23%)] [0 / 0 (NA)]
南西 南西 = 8,093
[8,093 (3.91% / 4.28%)] [0 / 0 (NA)]
西南西 西南西 = 8,065
[8,065 (3.90% / 4.27%)] [0 / 0 (NA)]
西 西 = 11,435
[11,435 (5.52% / 6.05%)] [0 / 0 (NA)]
西北西 西北西 = 10,672
[10,672 (5.16% / 5.65%)] [0 / 0 (NA)]
北西 北西 = 8,203
[8,203 (3.96% / 4.34%)] [0 / 0 (NA)]
北北西 北北西 = 7,516
[7,516 (3.63% / 3.98%)] [0 / 0 (NA)]
北 = 11,577
[11,577 (5.59% / 6.13%)] [0 / 0 (NA)]

欠測回数 (18,062 / 8.73%)

風速

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 26,289
[26,289 (12.70% / 13.91%)] [26,289 / 189,029 (13.91%)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 50,816
[50,816 (24.55% / 26.88%)] [77,105 / 162,740 (40.79%)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 47,594
[47,594 (22.99% / 25.18%)] [124,699 / 111,924 (65.97%)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 31,418
[31,418 (15.18% / 16.62%)] [156,117 / 64,330 (82.59%)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 17,355
[17,355 (8.38% / 9.18%)] [173,472 / 32,912 (91.77%)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 7,843
[7,843 (3.79% / 4.15%)] [181,315 / 15,557 (95.92%)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 3,555
[3,555 (1.72% / 1.88%)] [184,870 / 7,714 (97.80%)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 2,051
[2,051 (0.99% / 1.09%)] [186,921 / 4,159 (98.88%)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 1,071
[1,071 (0.52% / 0.57%)] [187,992 / 2,108 (99.45%)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 535
[535 (0.26% / 0.28%)] [188,527 / 1,037 (99.73%)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 275
[275 (0.13% / 0.15%)] [188,802 / 502 (99.88%)]
10.5m/s - 11.4m/s 10.5m/s - 11.4m/s = 108
[108 (0.05% / 0.06%)] [188,910 / 227 (99.94%)]
11.5m/s - 12.4m/s 11.5m/s - 12.4m/s = 71
[71 (0.03% / 0.04%)] [188,981 / 119 (99.97%)]
12.5m/s - 13.4m/s 12.5m/s - 13.4m/s = 27
[27 (0.01% / 0.01%)] [189,008 / 48 (99.99%)]
13.5m/s - 14.4m/s 13.5m/s - 14.4m/s = 13
[13 (0.01% / 0.01%)] [189,021 / 21 (100.00%)]
14.5m/s - 15.4m/s 14.5m/s - 15.4m/s = 4
[4 (0.00% / 0.00%)] [189,025 / 8 (100.00%)]
16.5m/s - 17.4m/s 16.5m/s - 17.4m/s = 3
[3 (0.00% / 0.00%)] [189,028 / 4 (100.00%)]
17.5m/s - 18.4m/s 17.5m/s - 18.4m/s = 1
[1 (0.00% / 0.00%)] [189,029 / 1 (100.00%)]

欠測回数 (17,956 / 8.68%)

気温

-9.5℃ - -8.6℃ -9.5℃ - -8.6℃ = 1
[1 (0.00% / 0.00%)] [1 / 189,017 (0.00%)]
-8.5℃ - -7.6℃ -8.5℃ - -7.6℃ = 3
[3 (0.00% / 0.00%)] [4 / 189,016 (0.00%)]
-7.5℃ - -6.6℃ -7.5℃ - -6.6℃ = 2
[2 (0.00% / 0.00%)] [6 / 189,013 (0.00%)]
-6.5℃ - -5.6℃ -6.5℃ - -5.6℃ = 7
[7 (0.00% / 0.00%)] [13 / 189,011 (0.01%)]
-5.5℃ - -4.6℃ -5.5℃ - -4.6℃ = 22
[22 (0.01% / 0.01%)] [35 / 189,004 (0.02%)]
-4.5℃ - -3.6℃ -4.5℃ - -3.6℃ = 79
[79 (0.04% / 0.04%)] [114 / 188,982 (0.06%)]
-3.5℃ - -2.6℃ -3.5℃ - -2.6℃ = 295
[295 (0.14% / 0.16%)] [409 / 188,903 (0.22%)]
-2.5℃ - -1.6℃ -2.5℃ - -1.6℃ = 782
[782 (0.38% / 0.41%)] [1,191 / 188,608 (0.63%)]
-1.5℃ - -0.6℃ -1.5℃ - -0.6℃ = 1,506
[1,506 (0.73% / 0.80%)] [2,697 / 187,826 (1.43%)]
-0.5℃ - 0.4℃ -0.5℃ - 0.4℃ = 5,933
[5,933 (2.87% / 3.14%)] [8,630 / 186,320 (4.57%)]
0.5℃ - 1.4℃ 0.5℃ - 1.4℃ = 4,377
[4,377 (2.11% / 2.32%)] [13,007 / 180,387 (6.88%)]
1.5℃ - 2.4℃ 1.5℃ - 2.4℃ = 4,832
[4,832 (2.33% / 2.56%)] [17,839 / 176,010 (9.44%)]
2.5℃ - 3.4℃ 2.5℃ - 3.4℃ = 5,345
[5,345 (2.58% / 2.83%)] [23,184 / 171,178 (12.27%)]
3.5℃ - 4.4℃ 3.5℃ - 4.4℃ = 5,736
[5,736 (2.77% / 3.03%)] [28,920 / 165,833 (15.30%)]
4.5℃ - 5.4℃ 4.5℃ - 5.4℃ = 6,298
[6,298 (3.04% / 3.33%)] [35,218 / 160,097 (18.63%)]
5.5℃ - 6.4℃ 5.5℃ - 6.4℃ = 6,605
[6,605 (3.19% / 3.49%)] [41,823 / 153,799 (22.13%)]
6.5℃ - 7.4℃ 6.5℃ - 7.4℃ = 6,929
[6,929 (3.35% / 3.67%)] [48,752 / 147,194 (25.79%)]
7.5℃ - 8.4℃ 7.5℃ - 8.4℃ = 6,666
[6,666 (3.22% / 3.53%)] [55,418 / 140,265 (29.32%)]
8.5℃ - 9.4℃ 8.5℃ - 9.4℃ = 6,321
[6,321 (3.05% / 3.34%)] [61,739 / 133,599 (32.66%)]
9.5℃ - 10.4℃ 9.5℃ - 10.4℃ = 6,137
[6,137 (2.96% / 3.25%)] [67,876 / 127,278 (35.91%)]
10.5℃ - 11.4℃ 10.5℃ - 11.4℃ = 5,888
[5,888 (2.84% / 3.12%)] [73,764 / 121,141 (39.03%)]
11.5℃ - 12.4℃ 11.5℃ - 12.4℃ = 5,751
[5,751 (2.78% / 3.04%)] [79,515 / 115,253 (42.07%)]
12.5℃ - 13.4℃ 12.5℃ - 13.4℃ = 6,155
[6,155 (2.97% / 3.26%)] [85,670 / 109,502 (45.32%)]
13.5℃ - 14.4℃ 13.5℃ - 14.4℃ = 6,519
[6,519 (3.15% / 3.45%)] [92,189 / 103,347 (48.77%)]
14.5℃ - 15.4℃ 14.5℃ - 15.4℃ = 6,769
[6,769 (3.27% / 3.58%)] [98,958 / 96,828 (52.35%)]
15.5℃ - 16.4℃ 15.5℃ - 16.4℃ = 7,043
[7,043 (3.40% / 3.73%)] [106,001 / 90,059 (56.08%)]
16.5℃ - 17.4℃ 16.5℃ - 17.4℃ = 7,680
[7,680 (3.71% / 4.06%)] [113,681 / 83,016 (60.14%)]
17.5℃ - 18.4℃ 17.5℃ - 18.4℃ = 8,114
[8,114 (3.92% / 4.29%)] [121,795 / 75,336 (64.44%)]
18.5℃ - 19.4℃ 18.5℃ - 19.4℃ = 8,356
[8,356 (4.04% / 4.42%)] [130,151 / 67,222 (68.86%)]
19.5℃ - 20.4℃ 19.5℃ - 20.4℃ = 8,094
[8,094 (3.91% / 4.28%)] [138,245 / 58,866 (73.14%)]
20.5℃ - 21.4℃ 20.5℃ - 21.4℃ = 7,976
[7,976 (3.85% / 4.22%)] [146,221 / 50,772 (77.36%)]
21.5℃ - 22.4℃ 21.5℃ - 22.4℃ = 7,176
[7,176 (3.47% / 3.80%)] [153,397 / 42,796 (81.16%)]
22.5℃ - 23.4℃ 22.5℃ - 23.4℃ = 6,754
[6,754 (3.26% / 3.57%)] [160,151 / 35,620 (84.73%)]
23.5℃ - 24.4℃ 23.5℃ - 24.4℃ = 6,723
[6,723 (3.25% / 3.56%)] [166,874 / 28,866 (88.29%)]
24.5℃ - 25.4℃ 24.5℃ - 25.4℃ = 5,824
[5,824 (2.81% / 3.08%)] [172,698 / 22,143 (91.37%)]
25.5℃ - 26.4℃ 25.5℃ - 26.4℃ = 4,364
[4,364 (2.11% / 2.31%)] [177,062 / 16,319 (93.68%)]
26.5℃ - 27.4℃ 26.5℃ - 27.4℃ = 3,154
[3,154 (1.52% / 1.67%)] [180,216 / 11,955 (95.34%)]
27.5℃ - 28.4℃ 27.5℃ - 28.4℃ = 2,422
[2,422 (1.17% / 1.28%)] [182,638 / 8,801 (96.63%)]
28.5℃ - 29.4℃ 28.5℃ - 29.4℃ = 1,890
[1,890 (0.91% / 1.00%)] [184,528 / 6,379 (97.63%)]
29.5℃ - 30.4℃ 29.5℃ - 30.4℃ = 1,554
[1,554 (0.75% / 0.82%)] [186,082 / 4,489 (98.45%)]
30.5℃ - 31.4℃ 30.5℃ - 31.4℃ = 1,243
[1,243 (0.60% / 0.66%)] [187,325 / 2,935 (99.10%)]
31.5℃ - 32.4℃ 31.5℃ - 32.4℃ = 952
[952 (0.46% / 0.50%)] [188,277 / 1,692 (99.61%)]
32.5℃ - 33.4℃ 32.5℃ - 33.4℃ = 510
[510 (0.25% / 0.27%)] [188,787 / 740 (99.88%)]
33.5℃ - 34.4℃ 33.5℃ - 34.4℃ = 184
[184 (0.09% / 0.10%)] [188,971 / 230 (99.98%)]
34.5℃ - 35.4℃ 34.5℃ - 35.4℃ = 36
[36 (0.02% / 0.02%)] [189,007 / 46 (99.99%)]
35.5℃ - 36.4℃ 35.5℃ - 36.4℃ = 9
[9 (0.00% / 0.00%)] [189,016 / 10 (100.00%)]
36.5℃ - 37.4℃ 36.5℃ - 37.4℃ = 1
[1 (0.00% / 0.00%)] [189,017 / 1 (100.00%)]

欠測回数 (17,968 / 8.68%)

日照時間

0.0h 0.0h = 133,281
[133,281 (64.39% / 70.51%)] [133,281 / 189,014 (70.51%)]
0.1h 0.1h = 3,952
[3,952 (1.91% / 2.09%)] [137,233 / 55,733 (72.60%)]
0.2h 0.2h = 3,023
[3,023 (1.46% / 1.60%)] [140,256 / 51,781 (74.20%)]
0.3h 0.3h = 2,621
[2,621 (1.27% / 1.39%)] [142,877 / 48,758 (75.59%)]
0.4h 0.4h = 2,513
[2,513 (1.21% / 1.33%)] [145,390 / 46,137 (76.92%)]
0.5h 0.5h = 2,514
[2,514 (1.21% / 1.33%)] [147,904 / 43,624 (78.25%)]
0.6h 0.6h = 2,560
[2,560 (1.24% / 1.35%)] [150,464 / 41,110 (79.60%)]
0.7h 0.7h = 2,827
[2,827 (1.37% / 1.50%)] [153,291 / 38,550 (81.10%)]
0.8h 0.8h = 3,201
[3,201 (1.55% / 1.69%)] [156,492 / 35,723 (82.79%)]
0.9h 0.9h = 4,087
[4,087 (1.97% / 2.16%)] [160,579 / 32,522 (84.96%)]
1.0h 1.0h = 28,435
[28,435 (13.74% / 15.04%)] [189,014 / 28,435 (100.00%)]

欠測回数 (17,971 / 8.68%)