Station Number 45401
Prefecture Chiba [ Local Portal ]
Location 千葉県館山市長須賀 館山特別地域気象観測所 (TATEYAMA SHI, CHIBA KEN)
Months of Observations 528
Number of Observations 385,704
Period of Observations
Period Name Lat. Long. Height Anemometer
1974/11/01 -- 1975/03/11 TATEYAMA 34.987N 139.865E 6m 0.0m
1975/03/12 -- 1981/03/26 TATEYAMA 34.987N 139.865E 6m 14.7m
1981/03/27 -- 1985/12/31 TATEYAMA 34.987N 139.865E 6m 14.8m
1986/01/01 -- 1996/02/26 TATEYAMA 34.987N 139.865E 6m 14.8m
1996/02/27 -- 2009/03/17 TATEYAMA 34.987N 139.865E 6m 14.7m
2009/03/18 -- 2019/12/99 TATEYAMA 34.987N 139.865E 6m 21.8m
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
45346 KYONAN (Chiba) 15.19km 350deg.
45361 KAMOGAWA (Chiba) 25.53km 57deg.

Statistics for the Whole Period

Precipitation

0.0mm - 0.4mm 0.0mm - 0.4mm = 357,855
[357,855 (92.78% / 92.82%)] [357,855 / 385,536 (92.82)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 13,119
[13,119 (3.40% / 3.40%)] [370,974 / 27,681 (96.22)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 5,156
[5,156 (1.34% / 1.34%)] [376,130 / 14,562 (97.56)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 2,833
[2,833 (0.73% / 0.73%)] [378,963 / 9,406 (98.30)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 1,752
[1,752 (0.45% / 0.45%)] [380,715 / 6,573 (98.75)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 1,158
[1,158 (0.30% / 0.30%)] [381,873 / 4,821 (99.05)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 847
[847 (0.22% / 0.22%)] [382,720 / 3,663 (99.27)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 576
[576 (0.15% / 0.15%)] [383,296 / 2,816 (99.42)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 450
[450 (0.12% / 0.12%)] [383,746 / 2,240 (99.54)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 366
[366 (0.09% / 0.09%)] [384,112 / 1,790 (99.63)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 238
[238 (0.06% / 0.06%)] [384,350 / 1,424 (99.69)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 213
[213 (0.06% / 0.06%)] [384,563 / 1,186 (99.75)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 165
[165 (0.04% / 0.04%)] [384,728 / 973 (99.79)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 133
[133 (0.03% / 0.03%)] [384,861 / 808 (99.82)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 111
[111 (0.03% / 0.03%)] [384,972 / 675 (99.85)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 65
[65 (0.02% / 0.02%)] [385,037 / 564 (99.87)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 68
[68 (0.02% / 0.02%)] [385,105 / 499 (99.89)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 53
[53 (0.01% / 0.01%)] [385,158 / 431 (99.90)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 58
[58 (0.02% / 0.02%)] [385,216 / 378 (99.92)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 30
[30 (0.01% / 0.01%)] [385,246 / 320 (99.92)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 40
[40 (0.01% / 0.01%)] [385,286 / 290 (99.94)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 29
[29 (0.01% / 0.01%)] [385,315 / 250 (99.94)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 27
[27 (0.01% / 0.01%)] [385,342 / 221 (99.95)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 28
[28 (0.01% / 0.01%)] [385,370 / 194 (99.96)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 20
[20 (0.01% / 0.01%)] [385,390 / 166 (99.96)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 16
[16 (0.00% / 0.00%)] [385,406 / 146 (99.97)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 15
[15 (0.00% / 0.00%)] [385,421 / 130 (99.97)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 18
[18 (0.00% / 0.00%)] [385,439 / 115 (99.97)]
27.5mm - 28.4mm 27.5mm - 28.4mm = 10
[10 (0.00% / 0.00%)] [385,449 / 97 (99.98)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 12
[12 (0.00% / 0.00%)] [385,461 / 87 (99.98)]
29.5mm - 30.4mm 29.5mm - 30.4mm = 8
[8 (0.00% / 0.00%)] [385,469 / 75 (99.98)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 9
[9 (0.00% / 0.00%)] [385,478 / 67 (99.98)]
31.5mm - 32.4mm 31.5mm - 32.4mm = 9
[9 (0.00% / 0.00%)] [385,487 / 58 (99.99)]
32.5mm - 33.4mm 32.5mm - 33.4mm = 4
[4 (0.00% / 0.00%)] [385,491 / 49 (99.99)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 3
[3 (0.00% / 0.00%)] [385,494 / 45 (99.99)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 5
[5 (0.00% / 0.00%)] [385,499 / 42 (99.99)]
35.5mm - 36.4mm 35.5mm - 36.4mm = 3
[3 (0.00% / 0.00%)] [385,502 / 37 (99.99)]
36.5mm - 37.4mm 36.5mm - 37.4mm = 8
[8 (0.00% / 0.00%)] [385,510 / 34 (99.99)]
37.5mm - 38.4mm 37.5mm - 38.4mm = 2
[2 (0.00% / 0.00%)] [385,512 / 26 (99.99)]
38.5mm - 39.4mm 38.5mm - 39.4mm = 2
[2 (0.00% / 0.00%)] [385,514 / 24 (99.99)]
39.5mm - 40.4mm 39.5mm - 40.4mm = 1
[1 (0.00% / 0.00%)] [385,515 / 22 (99.99)]
40.5mm - 41.4mm 40.5mm - 41.4mm = 3
[3 (0.00% / 0.00%)] [385,518 / 21 (100.00)]
41.5mm - 42.4mm 41.5mm - 42.4mm = 4
[4 (0.00% / 0.00%)] [385,522 / 18 (100.00)]
43.5mm - 44.4mm 43.5mm - 44.4mm = 5
[5 (0.00% / 0.00%)] [385,527 / 14 (100.00)]
44.5mm - 45.4mm 44.5mm - 45.4mm = 2
[2 (0.00% / 0.00%)] [385,529 / 9 (100.00)]
47.5mm - 48.4mm 47.5mm - 48.4mm = 2
[2 (0.00% / 0.00%)] [385,531 / 7 (100.00)]
49.5mm - 50.4mm 49.5mm - 50.4mm = 1
[1 (0.00% / 0.00%)] [385,532 / 5 (100.00)]
55.5mm - 56.4mm 55.5mm - 56.4mm = 1
[1 (0.00% / 0.00%)] [385,533 / 4 (100.00)]
57.5mm - 58.4mm 57.5mm - 58.4mm = 1
[1 (0.00% / 0.00%)] [385,534 / 3 (100.00)]
59.5mm - 60.4mm 59.5mm - 60.4mm = 2
[2 (0.00% / 0.00%)] [385,536 / 2 (100.00)]

Missing observations (168 / 0.04%)

Wind Direction

Calm Calm = 20,767
[20,767 (5.38% / 5.39%)]
NNE NNE = 28,587
[28,587 (7.41% / 7.41%)]
NE NE = 23,958
[23,958 (6.21% / 6.21%)]
ENE ENE = 21,692
[21,692 (5.62% / 5.63%)]
E E = 28,100
[28,100 (7.29% / 7.29%)]
ESE ESE = 23,649
[23,649 (6.13% / 6.13%)]
SE SE = 25,893
[25,893 (6.71% / 6.72%)]
SSE SSE = 35,252
[35,252 (9.14% / 9.14%)]
S S = 19,731
[19,731 (5.12% / 5.12%)]
SSW SSW = 27,349
[27,349 (7.09% / 7.09%)]
SW SW = 36,061
[36,061 (9.35% / 9.35%)]
WSW WSW = 18,799
[18,799 (4.87% / 4.88%)]
W W = 10,227
[10,227 (2.65% / 2.65%)]
WNW WNW = 14,229
[14,229 (3.69% / 3.69%)]
NW NW = 13,083
[13,083 (3.39% / 3.39%)]
NNW NNW = 12,980
[12,980 (3.37% / 3.37%)]
N N = 25,191
[25,191 (6.53% / 6.53%)]

Missing observations (156 / 0.04%)

Wind Speed

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 21,697
[21,697 (5.63% / 5.63%)] [21,697 / 385,519 (5.63)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 87,527
[87,527 (22.69% / 22.70%)] [109,224 / 363,822 (28.33)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 86,135
[86,135 (22.33% / 22.34%)] [195,359 / 276,295 (50.67)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 66,731
[66,731 (17.30% / 17.31%)] [262,090 / 190,160 (67.98)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 47,987
[47,987 (12.44% / 12.45%)] [310,077 / 123,429 (80.43)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 30,033
[30,033 (7.79% / 7.79%)] [340,110 / 75,442 (88.22)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 18,890
[18,890 (4.90% / 4.90%)] [359,000 / 45,409 (93.12)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 12,119
[12,119 (3.14% / 3.14%)] [371,119 / 26,519 (96.26)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 7,298
[7,298 (1.89% / 1.89%)] [378,417 / 14,400 (98.16)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 3,918
[3,918 (1.02% / 1.02%)] [382,335 / 7,102 (99.17)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 1,781
[1,781 (0.46% / 0.46%)] [384,116 / 3,184 (99.64)]
10.5m/s - 11.4m/s 10.5m/s - 11.4m/s = 791
[791 (0.21% / 0.21%)] [384,907 / 1,403 (99.84)]
11.5m/s - 12.4m/s 11.5m/s - 12.4m/s = 351
[351 (0.09% / 0.09%)] [385,258 / 612 (99.93)]
12.5m/s - 13.4m/s 12.5m/s - 13.4m/s = 134
[134 (0.03% / 0.03%)] [385,392 / 261 (99.97)]
13.5m/s - 14.4m/s 13.5m/s - 14.4m/s = 60
[60 (0.02% / 0.02%)] [385,452 / 127 (99.98)]
14.5m/s - 15.4m/s 14.5m/s - 15.4m/s = 21
[21 (0.01% / 0.01%)] [385,473 / 67 (99.99)]
15.5m/s - 16.4m/s 15.5m/s - 16.4m/s = 22
[22 (0.01% / 0.01%)] [385,495 / 46 (99.99)]
16.5m/s - 17.4m/s 16.5m/s - 17.4m/s = 10
[10 (0.00% / 0.00%)] [385,505 / 24 (100.00)]
17.5m/s - 18.4m/s 17.5m/s - 18.4m/s = 8
[8 (0.00% / 0.00%)] [385,513 / 14 (100.00)]
18.5m/s - 19.4m/s 18.5m/s - 19.4m/s = 3
[3 (0.00% / 0.00%)] [385,516 / 6 (100.00)]
20.5m/s - 21.4m/s 20.5m/s - 21.4m/s = 1
[1 (0.00% / 0.00%)] [385,517 / 3 (100.00)]
23.5m/s - 24.4m/s 23.5m/s - 24.4m/s = 1
[1 (0.00% / 0.00%)] [385,518 / 2 (100.00)]
24.5m/s - 25.4m/s 24.5m/s - 25.4m/s = 1
[1 (0.00% / 0.00%)] [385,519 / 1 (100.00)]

Missing observations (185 / 0.05%)

Temperature

-5.5C - -4.6C -5.5C - -4.6C = 33
[33 (0.01% / 0.01%)] [33 / 383,124 (0.01)]
-4.5C - -3.6C -4.5C - -3.6C = 58
[58 (0.02% / 0.02%)] [91 / 383,091 (0.02)]
-3.5C - -2.6C -3.5C - -2.6C = 266
[266 (0.07% / 0.07%)] [357 / 383,033 (0.09)]
-2.5C - -1.6C -2.5C - -1.6C = 657
[657 (0.17% / 0.17%)] [1,014 / 382,767 (0.26)]
-1.5C - -0.6C -1.5C - -0.6C = 1,473
[1,473 (0.38% / 0.38%)] [2,487 / 382,110 (0.65)]
-0.5C - 0.4C -0.5C - 0.4C = 5,442
[5,442 (1.41% / 1.42%)] [7,929 / 380,637 (2.07)]
0.5C - 1.4C 0.5C - 1.4C = 4,077
[4,077 (1.06% / 1.06%)] [12,006 / 375,195 (3.13)]
1.5C - 2.4C 1.5C - 2.4C = 5,402
[5,402 (1.40% / 1.41%)] [17,408 / 371,118 (4.54)]
2.5C - 3.4C 2.5C - 3.4C = 6,874
[6,874 (1.78% / 1.79%)] [24,282 / 365,716 (6.34)]
3.5C - 4.4C 3.5C - 4.4C = 8,451
[8,451 (2.19% / 2.21%)] [32,733 / 358,842 (8.54)]
4.5C - 5.4C 4.5C - 5.4C = 9,651
[9,651 (2.50% / 2.52%)] [42,384 / 350,391 (11.06)]
5.5C - 6.4C 5.5C - 6.4C = 11,021
[11,021 (2.86% / 2.88%)] [53,405 / 340,740 (13.94)]
6.5C - 7.4C 6.5C - 7.4C = 12,127
[12,127 (3.14% / 3.17%)] [65,532 / 329,719 (17.10)]
7.5C - 8.4C 7.5C - 8.4C = 12,850
[12,850 (3.33% / 3.35%)] [78,382 / 317,592 (20.46)]
8.5C - 9.4C 8.5C - 9.4C = 13,373
[13,373 (3.47% / 3.49%)] [91,755 / 304,742 (23.95)]
9.5C - 10.4C 9.5C - 10.4C = 13,583
[13,583 (3.52% / 3.55%)] [105,338 / 291,369 (27.49)]
10.5C - 11.4C 10.5C - 11.4C = 13,397
[13,397 (3.47% / 3.50%)] [118,735 / 277,786 (30.99)]
11.5C - 12.4C 11.5C - 12.4C = 13,318
[13,318 (3.45% / 3.48%)] [132,053 / 264,389 (34.47)]
12.5C - 13.4C 12.5C - 13.4C = 13,378
[13,378 (3.47% / 3.49%)] [145,431 / 251,071 (37.96)]
13.5C - 14.4C 13.5C - 14.4C = 13,756
[13,756 (3.57% / 3.59%)] [159,187 / 237,693 (41.55)]
14.5C - 15.4C 14.5C - 15.4C = 14,264
[14,264 (3.70% / 3.72%)] [173,451 / 223,937 (45.27)]
15.5C - 16.4C 15.5C - 16.4C = 14,753
[14,753 (3.82% / 3.85%)] [188,204 / 209,673 (49.12)]
16.5C - 17.4C 16.5C - 17.4C = 15,713
[15,713 (4.07% / 4.10%)] [203,917 / 194,920 (53.22)]
17.5C - 18.4C 17.5C - 18.4C = 16,565
[16,565 (4.29% / 4.32%)] [220,482 / 179,207 (57.55)]
18.5C - 19.4C 18.5C - 19.4C = 16,894
[16,894 (4.38% / 4.41%)] [237,376 / 162,642 (61.96)]
19.5C - 20.4C 19.5C - 20.4C = 16,678
[16,678 (4.32% / 4.35%)] [254,054 / 145,748 (66.31)]
20.5C - 21.4C 20.5C - 21.4C = 17,080
[17,080 (4.43% / 4.46%)] [271,134 / 129,070 (70.77)]
21.5C - 22.4C 21.5C - 22.4C = 16,582
[16,582 (4.30% / 4.33%)] [287,716 / 111,990 (75.10)]
22.5C - 23.4C 22.5C - 23.4C = 15,712
[15,712 (4.07% / 4.10%)] [303,428 / 95,408 (79.20)]
23.5C - 24.4C 23.5C - 24.4C = 15,622
[15,622 (4.05% / 4.08%)] [319,050 / 79,696 (83.28)]
24.5C - 25.4C 24.5C - 25.4C = 15,388
[15,388 (3.99% / 4.02%)] [334,438 / 64,074 (87.29)]
25.5C - 26.4C 25.5C - 26.4C = 14,466
[14,466 (3.75% / 3.78%)] [348,904 / 48,686 (91.07)]
26.5C - 27.4C 26.5C - 27.4C = 11,224
[11,224 (2.91% / 2.93%)] [360,128 / 34,220 (94.00)]
27.5C - 28.4C 27.5C - 28.4C = 7,860
[7,860 (2.04% / 2.05%)] [367,988 / 22,996 (96.05)]
28.5C - 29.4C 28.5C - 29.4C = 6,101
[6,101 (1.58% / 1.59%)] [374,089 / 15,136 (97.64)]
29.5C - 30.4C 29.5C - 30.4C = 4,665
[4,665 (1.21% / 1.22%)] [378,754 / 9,035 (98.86)]
30.5C - 31.4C 30.5C - 31.4C = 2,837
[2,837 (0.74% / 0.74%)] [381,591 / 4,370 (99.60)]
31.5C - 32.4C 31.5C - 32.4C = 1,146
[1,146 (0.30% / 0.30%)] [382,737 / 1,533 (99.90)]
32.5C - 33.4C 32.5C - 33.4C = 303
[303 (0.08% / 0.08%)] [383,040 / 387 (99.98)]
33.5C - 34.4C 33.5C - 34.4C = 71
[71 (0.02% / 0.02%)] [383,111 / 84 (100.00)]
34.5C - 35.4C 34.5C - 35.4C = 12
[12 (0.00% / 0.00%)] [383,123 / 13 (100.00)]
35.5C - 36.4C 35.5C - 36.4C = 1
[1 (0.00% / 0.00%)] [383,124 / 1 (100.00)]

Missing observations (2,580 / 0.67%)

Sunshine Duration

0.0h 0.0h = 260,253
[260,253 (67.47% / 67.59%)] [260,253 / 385,019 (67.59)]
0.1h 0.1h = 9,797
[9,797 (2.54% / 2.54%)] [270,050 / 124,766 (70.14)]
0.2h 0.2h = 7,674
[7,674 (1.99% / 1.99%)] [277,724 / 114,969 (72.13)]
0.3h 0.3h = 6,907
[6,907 (1.79% / 1.79%)] [284,631 / 107,295 (73.93)]
0.4h 0.4h = 6,317
[6,317 (1.64% / 1.64%)] [290,948 / 100,388 (75.57)]
0.5h 0.5h = 6,146
[6,146 (1.59% / 1.60%)] [297,094 / 94,071 (77.16)]
0.6h 0.6h = 6,157
[6,157 (1.60% / 1.60%)] [303,251 / 87,925 (78.76)]
0.7h 0.7h = 6,688
[6,688 (1.73% / 1.74%)] [309,939 / 81,768 (80.50)]
0.8h 0.8h = 7,591
[7,591 (1.97% / 1.97%)] [317,530 / 75,080 (82.47)]
0.9h 0.9h = 10,189
[10,189 (2.64% / 2.65%)] [327,719 / 67,489 (85.12)]
1.0h 1.0h = 57,300
[57,300 (14.86% / 14.88%)] [385,019 / 57,300 (100.00)]

Missing observations (685 / 0.18%)