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 525
Number of Observations 383,486
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 -- 2019/09/99 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 = 355,896
[355,896 (92.81% / 92.85%)] [355,896 / 383,318 (92.85)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 13,004
[13,004 (3.39% / 3.39%)] [368,900 / 27,422 (96.24)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 5,111
[5,111 (1.33% / 1.33%)] [374,011 / 14,418 (97.57)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 2,813
[2,813 (0.73% / 0.73%)] [376,824 / 9,307 (98.31)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 1,725
[1,725 (0.45% / 0.45%)] [378,549 / 6,494 (98.76)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 1,150
[1,150 (0.30% / 0.30%)] [379,699 / 4,769 (99.06)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 840
[840 (0.22% / 0.22%)] [380,539 / 3,619 (99.28)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 570
[570 (0.15% / 0.15%)] [381,109 / 2,779 (99.42)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 448
[448 (0.12% / 0.12%)] [381,557 / 2,209 (99.54)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 363
[363 (0.09% / 0.09%)] [381,920 / 1,761 (99.64)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 236
[236 (0.06% / 0.06%)] [382,156 / 1,398 (99.70)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 209
[209 (0.05% / 0.05%)] [382,365 / 1,162 (99.75)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 163
[163 (0.04% / 0.04%)] [382,528 / 953 (99.79)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 131
[131 (0.03% / 0.03%)] [382,659 / 790 (99.83)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 109
[109 (0.03% / 0.03%)] [382,768 / 659 (99.86)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 64
[64 (0.02% / 0.02%)] [382,832 / 550 (99.87)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 68
[68 (0.02% / 0.02%)] [382,900 / 486 (99.89)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 53
[53 (0.01% / 0.01%)] [382,953 / 418 (99.90)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 56
[56 (0.01% / 0.01%)] [383,009 / 365 (99.92)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 30
[30 (0.01% / 0.01%)] [383,039 / 309 (99.93)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 40
[40 (0.01% / 0.01%)] [383,079 / 279 (99.94)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 29
[29 (0.01% / 0.01%)] [383,108 / 239 (99.95)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 26
[26 (0.01% / 0.01%)] [383,134 / 210 (99.95)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 27
[27 (0.01% / 0.01%)] [383,161 / 184 (99.96)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 19
[19 (0.00% / 0.00%)] [383,180 / 157 (99.96)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 16
[16 (0.00% / 0.00%)] [383,196 / 138 (99.97)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 14
[14 (0.00% / 0.00%)] [383,210 / 122 (99.97)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 18
[18 (0.00% / 0.00%)] [383,228 / 108 (99.98)]
27.5mm - 28.4mm 27.5mm - 28.4mm = 10
[10 (0.00% / 0.00%)] [383,238 / 90 (99.98)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 12
[12 (0.00% / 0.00%)] [383,250 / 80 (99.98)]
29.5mm - 30.4mm 29.5mm - 30.4mm = 7
[7 (0.00% / 0.00%)] [383,257 / 68 (99.98)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 9
[9 (0.00% / 0.00%)] [383,266 / 61 (99.99)]
31.5mm - 32.4mm 31.5mm - 32.4mm = 5
[5 (0.00% / 0.00%)] [383,271 / 52 (99.99)]
32.5mm - 33.4mm 32.5mm - 33.4mm = 3
[3 (0.00% / 0.00%)] [383,274 / 47 (99.99)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 2
[2 (0.00% / 0.00%)] [383,276 / 44 (99.99)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 5
[5 (0.00% / 0.00%)] [383,281 / 42 (99.99)]
35.5mm - 36.4mm 35.5mm - 36.4mm = 3
[3 (0.00% / 0.00%)] [383,284 / 37 (99.99)]
36.5mm - 37.4mm 36.5mm - 37.4mm = 8
[8 (0.00% / 0.00%)] [383,292 / 34 (99.99)]
37.5mm - 38.4mm 37.5mm - 38.4mm = 2
[2 (0.00% / 0.00%)] [383,294 / 26 (99.99)]
38.5mm - 39.4mm 38.5mm - 39.4mm = 2
[2 (0.00% / 0.00%)] [383,296 / 24 (99.99)]
39.5mm - 40.4mm 39.5mm - 40.4mm = 1
[1 (0.00% / 0.00%)] [383,297 / 22 (99.99)]
40.5mm - 41.4mm 40.5mm - 41.4mm = 3
[3 (0.00% / 0.00%)] [383,300 / 21 (100.00)]
41.5mm - 42.4mm 41.5mm - 42.4mm = 4
[4 (0.00% / 0.00%)] [383,304 / 18 (100.00)]
43.5mm - 44.4mm 43.5mm - 44.4mm = 5
[5 (0.00% / 0.00%)] [383,309 / 14 (100.00)]
44.5mm - 45.4mm 44.5mm - 45.4mm = 2
[2 (0.00% / 0.00%)] [383,311 / 9 (100.00)]
47.5mm - 48.4mm 47.5mm - 48.4mm = 2
[2 (0.00% / 0.00%)] [383,313 / 7 (100.00)]
49.5mm - 50.4mm 49.5mm - 50.4mm = 1
[1 (0.00% / 0.00%)] [383,314 / 5 (100.00)]
55.5mm - 56.4mm 55.5mm - 56.4mm = 1
[1 (0.00% / 0.00%)] [383,315 / 4 (100.00)]
57.5mm - 58.4mm 57.5mm - 58.4mm = 1
[1 (0.00% / 0.00%)] [383,316 / 3 (100.00)]
59.5mm - 60.4mm 59.5mm - 60.4mm = 2
[2 (0.00% / 0.00%)] [383,318 / 2 (100.00)]

Missing observations (168 / 0.04%)

Wind Direction

Calm Calm = 20,761
[20,761 (5.41% / 5.42%)]
NNE NNE = 28,278
[28,278 (7.37% / 7.38%)]
NE NE = 23,720
[23,720 (6.19% / 6.19%)]
ENE ENE = 21,531
[21,531 (5.61% / 5.62%)]
E E = 27,959
[27,959 (7.29% / 7.29%)]
ESE ESE = 23,543
[23,543 (6.14% / 6.14%)]
SE SE = 25,697
[25,697 (6.70% / 6.70%)]
SSE SSE = 35,095
[35,095 (9.15% / 9.16%)]
S S = 19,669
[19,669 (5.13% / 5.13%)]
SSW SSW = 27,276
[27,276 (7.11% / 7.12%)]
SW SW = 35,949
[35,949 (9.37% / 9.38%)]
WSW WSW = 18,722
[18,722 (4.88% / 4.88%)]
W W = 10,185
[10,185 (2.66% / 2.66%)]
WNW WNW = 14,138
[14,138 (3.69% / 3.69%)]
NW NW = 13,000
[13,000 (3.39% / 3.39%)]
NNW NNW = 12,842
[12,842 (3.35% / 3.35%)]
N N = 24,965
[24,965 (6.51% / 6.51%)]

Missing observations (156 / 0.04%)

Wind Speed

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 21,659
[21,659 (5.65% / 5.65%)] [21,659 / 383,301 (5.65)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 87,073
[87,073 (22.71% / 22.72%)] [108,732 / 361,642 (28.37)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 85,517
[85,517 (22.30% / 22.31%)] [194,249 / 274,569 (50.68)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 66,274
[66,274 (17.28% / 17.29%)] [260,523 / 189,052 (67.97)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 47,701
[47,701 (12.44% / 12.44%)] [308,224 / 122,778 (80.41)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 29,898
[29,898 (7.80% / 7.80%)] [338,122 / 75,077 (88.21)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 18,792
[18,792 (4.90% / 4.90%)] [356,914 / 45,179 (93.12)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 12,074
[12,074 (3.15% / 3.15%)] [368,988 / 26,387 (96.27)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 7,262
[7,262 (1.89% / 1.89%)] [376,250 / 14,313 (98.16)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 3,896
[3,896 (1.02% / 1.02%)] [380,146 / 7,051 (99.18)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 1,768
[1,768 (0.46% / 0.46%)] [381,914 / 3,155 (99.64)]
10.5m/s - 11.4m/s 10.5m/s - 11.4m/s = 786
[786 (0.20% / 0.21%)] [382,700 / 1,387 (99.84)]
11.5m/s - 12.4m/s 11.5m/s - 12.4m/s = 350
[350 (0.09% / 0.09%)] [383,050 / 601 (99.93)]
12.5m/s - 13.4m/s 12.5m/s - 13.4m/s = 131
[131 (0.03% / 0.03%)] [383,181 / 251 (99.97)]
13.5m/s - 14.4m/s 13.5m/s - 14.4m/s = 58
[58 (0.02% / 0.02%)] [383,239 / 120 (99.98)]
14.5m/s - 15.4m/s 14.5m/s - 15.4m/s = 20
[20 (0.01% / 0.01%)] [383,259 / 62 (99.99)]
15.5m/s - 16.4m/s 15.5m/s - 16.4m/s = 20
[20 (0.01% / 0.01%)] [383,279 / 42 (99.99)]
16.5m/s - 17.4m/s 16.5m/s - 17.4m/s = 10
[10 (0.00% / 0.00%)] [383,289 / 22 (100.00)]
17.5m/s - 18.4m/s 17.5m/s - 18.4m/s = 7
[7 (0.00% / 0.00%)] [383,296 / 12 (100.00)]
18.5m/s - 19.4m/s 18.5m/s - 19.4m/s = 2
[2 (0.00% / 0.00%)] [383,298 / 5 (100.00)]
20.5m/s - 21.4m/s 20.5m/s - 21.4m/s = 1
[1 (0.00% / 0.00%)] [383,299 / 3 (100.00)]
23.5m/s - 24.4m/s 23.5m/s - 24.4m/s = 1
[1 (0.00% / 0.00%)] [383,300 / 2 (100.00)]
24.5m/s - 25.4m/s 24.5m/s - 25.4m/s = 1
[1 (0.00% / 0.00%)] [383,301 / 1 (100.00)]

Missing observations (185 / 0.05%)

Temperature

-5.5C - -4.6C -5.5C - -4.6C = 33
[33 (0.01% / 0.01%)] [33 / 380,906 (0.01)]
-4.5C - -3.6C -4.5C - -3.6C = 58
[58 (0.02% / 0.02%)] [91 / 380,873 (0.02)]
-3.5C - -2.6C -3.5C - -2.6C = 266
[266 (0.07% / 0.07%)] [357 / 380,815 (0.09)]
-2.5C - -1.6C -2.5C - -1.6C = 657
[657 (0.17% / 0.17%)] [1,014 / 380,549 (0.27)]
-1.5C - -0.6C -1.5C - -0.6C = 1,473
[1,473 (0.38% / 0.39%)] [2,487 / 379,892 (0.65)]
-0.5C - 0.4C -0.5C - 0.4C = 5,442
[5,442 (1.42% / 1.43%)] [7,929 / 378,419 (2.08)]
0.5C - 1.4C 0.5C - 1.4C = 4,069
[4,069 (1.06% / 1.07%)] [11,998 / 372,977 (3.15)]
1.5C - 2.4C 1.5C - 2.4C = 5,394
[5,394 (1.41% / 1.42%)] [17,392 / 368,908 (4.57)]
2.5C - 3.4C 2.5C - 3.4C = 6,844
[6,844 (1.78% / 1.80%)] [24,236 / 363,514 (6.36)]
3.5C - 4.4C 3.5C - 4.4C = 8,424
[8,424 (2.20% / 2.21%)] [32,660 / 356,670 (8.57)]
4.5C - 5.4C 4.5C - 5.4C = 9,621
[9,621 (2.51% / 2.53%)] [42,281 / 348,246 (11.10)]
5.5C - 6.4C 5.5C - 6.4C = 10,961
[10,961 (2.86% / 2.88%)] [53,242 / 338,625 (13.98)]
6.5C - 7.4C 6.5C - 7.4C = 12,065
[12,065 (3.15% / 3.17%)] [65,307 / 327,664 (17.15)]
7.5C - 8.4C 7.5C - 8.4C = 12,766
[12,766 (3.33% / 3.35%)] [78,073 / 315,599 (20.50)]
8.5C - 9.4C 8.5C - 9.4C = 13,279
[13,279 (3.46% / 3.49%)] [91,352 / 302,833 (23.98)]
9.5C - 10.4C 9.5C - 10.4C = 13,416
[13,416 (3.50% / 3.52%)] [104,768 / 289,554 (27.50)]
10.5C - 11.4C 10.5C - 11.4C = 13,261
[13,261 (3.46% / 3.48%)] [118,029 / 276,138 (30.99)]
11.5C - 12.4C 11.5C - 12.4C = 13,193
[13,193 (3.44% / 3.46%)] [131,222 / 262,877 (34.45)]
12.5C - 13.4C 12.5C - 13.4C = 13,282
[13,282 (3.46% / 3.49%)] [144,504 / 249,684 (37.94)]
13.5C - 14.4C 13.5C - 14.4C = 13,649
[13,649 (3.56% / 3.58%)] [158,153 / 236,402 (41.52)]
14.5C - 15.4C 14.5C - 15.4C = 14,163
[14,163 (3.69% / 3.72%)] [172,316 / 222,753 (45.24)]
15.5C - 16.4C 15.5C - 16.4C = 14,630
[14,630 (3.82% / 3.84%)] [186,946 / 208,590 (49.08)]
16.5C - 17.4C 16.5C - 17.4C = 15,579
[15,579 (4.06% / 4.09%)] [202,525 / 193,960 (53.17)]
17.5C - 18.4C 17.5C - 18.4C = 16,414
[16,414 (4.28% / 4.31%)] [218,939 / 178,381 (57.48)]
18.5C - 19.4C 18.5C - 19.4C = 16,763
[16,763 (4.37% / 4.40%)] [235,702 / 161,967 (61.88)]
19.5C - 20.4C 19.5C - 20.4C = 16,536
[16,536 (4.31% / 4.34%)] [252,238 / 145,204 (66.22)]
20.5C - 21.4C 20.5C - 21.4C = 16,971
[16,971 (4.43% / 4.46%)] [269,209 / 128,668 (70.68)]
21.5C - 22.4C 21.5C - 22.4C = 16,513
[16,513 (4.31% / 4.34%)] [285,722 / 111,697 (75.01)]
22.5C - 23.4C 22.5C - 23.4C = 15,654
[15,654 (4.08% / 4.11%)] [301,376 / 95,184 (79.12)]
23.5C - 24.4C 23.5C - 24.4C = 15,583
[15,583 (4.06% / 4.09%)] [316,959 / 79,530 (83.21)]
24.5C - 25.4C 24.5C - 25.4C = 15,337
[15,337 (4.00% / 4.03%)] [332,296 / 63,947 (87.24)]
25.5C - 26.4C 25.5C - 26.4C = 14,437
[14,437 (3.76% / 3.79%)] [346,733 / 48,610 (91.03)]
26.5C - 27.4C 26.5C - 27.4C = 11,202
[11,202 (2.92% / 2.94%)] [357,935 / 34,173 (93.97)]
27.5C - 28.4C 27.5C - 28.4C = 7,846
[7,846 (2.05% / 2.06%)] [365,781 / 22,971 (96.03)]
28.5C - 29.4C 28.5C - 29.4C = 6,093
[6,093 (1.59% / 1.60%)] [371,874 / 15,125 (97.63)]
29.5C - 30.4C 29.5C - 30.4C = 4,662
[4,662 (1.22% / 1.22%)] [376,536 / 9,032 (98.85)]
30.5C - 31.4C 30.5C - 31.4C = 2,837
[2,837 (0.74% / 0.74%)] [379,373 / 4,370 (99.60)]
31.5C - 32.4C 31.5C - 32.4C = 1,146
[1,146 (0.30% / 0.30%)] [380,519 / 1,533 (99.90)]
32.5C - 33.4C 32.5C - 33.4C = 303
[303 (0.08% / 0.08%)] [380,822 / 387 (99.98)]
33.5C - 34.4C 33.5C - 34.4C = 71
[71 (0.02% / 0.02%)] [380,893 / 84 (100.00)]
34.5C - 35.4C 34.5C - 35.4C = 12
[12 (0.00% / 0.00%)] [380,905 / 13 (100.00)]
35.5C - 36.4C 35.5C - 36.4C = 1
[1 (0.00% / 0.00%)] [380,906 / 1 (100.00)]

Missing observations (2,580 / 0.67%)

Sunshine Duration

0.0h 0.0h = 258,630
[258,630 (67.44% / 67.56%)] [258,630 / 382,801 (67.56)]
0.1h 0.1h = 9,750
[9,750 (2.54% / 2.55%)] [268,380 / 124,171 (70.11)]
0.2h 0.2h = 7,623
[7,623 (1.99% / 1.99%)] [276,003 / 114,421 (72.10)]
0.3h 0.3h = 6,860
[6,860 (1.79% / 1.79%)] [282,863 / 106,798 (73.89)]
0.4h 0.4h = 6,287
[6,287 (1.64% / 1.64%)] [289,150 / 99,938 (75.54)]
0.5h 0.5h = 6,108
[6,108 (1.59% / 1.60%)] [295,258 / 93,651 (77.13)]
0.6h 0.6h = 6,129
[6,129 (1.60% / 1.60%)] [301,387 / 87,543 (78.73)]
0.7h 0.7h = 6,663
[6,663 (1.74% / 1.74%)] [308,050 / 81,414 (80.47)]
0.8h 0.8h = 7,556
[7,556 (1.97% / 1.97%)] [315,606 / 74,751 (82.45)]
0.9h 0.9h = 10,145
[10,145 (2.65% / 2.65%)] [325,751 / 67,195 (85.10)]
1.0h 1.0h = 57,050
[57,050 (14.88% / 14.90%)] [382,801 / 57,050 (100.00)]

Missing observations (685 / 0.18%)