半旬ごとの値
 |  |
 |  |
 |  |  |  |  |
 |  |  |  |  |  |
 |  |  |  |  |
勝浦（千葉県) 1987年（半旬ごとの値） 詳細（日照・雪・その他）
| 月 | 半旬 | 日～日 | 日照時間(h) | 全天日射量 (MJ/㎡) | 雪(cm) | 雲量 | 大気現象 | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 合計 | 日照率 | 各階級の日数 | 降雪 | 各階級の日数（降雪） | 最深積雪 | 各階級の日数（最深積雪） | 平均 | 各階級の日数 | 雪日数 | 霧日数 | 雷日数 | ||||||||||||||||||||
| 不照 | 日照率 ≧40% | 平均 | 合計 | 日合計の最大 | ≧3cm | ≧5cm | ≧10cm | ≧20cm | ≧50cm | ≧100cm | 値 | 日 | ≧0cm | ≧1cm | ≧5cm | ≧10cm | ≧20cm | ≧50cm | ≧100cm | ＜1.5 | ≧8.5 | ||||||||||
| 値 | 日 | ||||||||||||||||||||||||||||||
| 第1半旬 | 1～ 5 | 13.2 | 27 | 3 | 2 | 0 | 0 | 05 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.4 | 0 | 3 | 1 | 0 | 0 | |||
| 第2半旬 | 6～10 | 29.0 | 59 | 0 | 5 | 0 | 0 | 06 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 06 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3.7 | 1 | 0 | 1 | 0 | 1 | ||
| 第3半旬 | 11～15 | 34.2 | 69 | 0 | 4 | 0 | 0 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.7 | 1 | 1 | 1 | 0 | 1 | |||
| 第4半旬 | 16～20 | 27.3 | 54 | 0 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.7 | 1 | 1 | 0 | 0 | 1 | ||||
| 第5半旬 | 21～25 | 13.3 | 26 | 2 | 1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.4 | 0 | 2 | 0 | 0 | 0 | ||||
| 第6半旬 | 26～31 | 45.1 | 73 | 0 | 6 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.7 | 1 | 0 | 0 | 0 | 0 | ||||
| 第1半旬 | 1～ 5 | 32.8 | 63 | 0 | 4 | 0 | 0 | 02 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.1 | 1 | 1 | 1 | 0 | 0 | |||
| 第2半旬 | 6～10 | 38.8 | 73 | 0 | 5 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.3 | 2 | 0 | 0 | 0 | 0 | ||||
| 第3半旬 | 11～15 | 17.4 | 32 | 2 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.9 | 1 | 2 | 0 | 0 | 0 | ||||
| 第4半旬 | 16～20 | 16.6 | 30 | 3 | 2 | 0 | 0 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.7 | 1 | 3 | 1 | 0 | 0 | |||
| 第5半旬 | 21～25 | 17.6 | 32 | 0 | 3 | 0 | 0 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.0 | 0 | 3 | 1 | 0 | 2 | |||
| 第6半旬 | 26～28 | 25.0 | 74 | 0 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.7 | 0 | 1 | 0 | 0 | 0 | ||||
| 第1半旬 | 1～ 5 | 40.1 | 70 | 0 | 5 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.0 | 2 | 0 | 0 | 0 | 0 | ||||
| 第2半旬 | 6～10 | 28.2 | 49 | 0 | 3 | 0 | 0 | 08* | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 08 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6.8 | 0 | 2 | 2 | 0 | 0 | ||
| 第3半旬 | 11～15 | 11.5 | 19 | 2 | 1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.5 | 0 | 3 | 0 | 0 | 0 | ||||
| 第4半旬 | 16～20 | 20.1 | 34 | 2 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.3 | 0 | 2 | 0 | 0 | 0 | ||||
| 第5半旬 | 21～25 | 12.6 | 21 | 3 | 1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.8 | 1 | 3 | 0 | 0 | 0 | ||||
| 第6半旬 | 26～31 | 28.7 | 39 | 1 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.8 | 0 | 3 | 0 | 0 | 0 | ||||
| 第1半旬 | 1～ 5 | 26.6 | 42 | 1 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.1 | 2 | 3 | 0 | 0 | 0 | ||||
| 第2半旬 | 6～10 | 22.9 | 36 | 1 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.5 | 0 | 4 | 0 | 1 | 0 | ||||
| 第3半旬 | 11～15 | 16.4 | 25 | 0 | 1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.7 | 0 | 3 | 0 | 0 | 0 | ||||
| 第4半旬 | 16～20 | 50.6 | 77 | 0 | 5 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.1 | 1 | 0 | 0 | 0 | 0 | ||||
| 第5半旬 | 21～25 | 38.4 | 58 | 0 | 4 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.2 | 1 | 1 | 0 | 0 | 0 | ||||
| 第6半旬 | 26～30 | 40.8 | 61 | 1 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.6 | 1 | 1 | 0 | 0 | 0 | ||||
| 第1半旬 | 1～ 5 | 19.1 | 28 | 1 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.3 | 0 | 2 | 0 | 0 | 0 | ||||
| 第2半旬 | 6～10 | 57.2 | 83 | 0 | 5 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.0 | 2 | 0 | 0 | 0 | 0 | ||||
| 第3半旬 | 11～15 | 25.7 | 37 | 1 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.7 | 0 | 5 | 0 | 0 | 0 | ||||
| 第4半旬 | 16～20 | 22.0 | 31 | 1 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.6 | 0 | 3 | 0 | 0 | 0 | ||||
| 第5半旬 | 21～25 | 23.8 | 34 | 2 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.9 | 1 | 4 | 0 | 0 | 0 | ||||
| 第6半旬 | 26～31 | 32.9 | 38 | 2 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.5 | 1 | 2 | 0 | 0 | 0 | ||||
| 第1半旬 | 1～ 5 | 38.8 | 54 | 0 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.1 | 1 | 3 | 0 | 0 | 0 | ||||
| 第2半旬 | 6～10 | 39.1 | 54 | 1 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.4 | 1 | 2 | 0 | 1 | 0 | ||||
| 第3半旬 | 11～15 | 24.7 | 34 | 1 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.2 | 0 | 3 | 0 | 0 | 0 | ||||
| 第4半旬 | 16～20 | 42.5 | 59 | 0 | 4 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.1 | 1 | 2 | 0 | 0 | 0 | ||||
| 第5半旬 | 21～25 | 33.1 | 46 | 1 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.6 | 1 | 2 | 0 | 0 | 0 | ||||
| 第6半旬 | 26～30 | 8.5 | 12 | 1 | 0 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.5 | 0 | 4 | 0 | 0 | 0 | ||||
| 第1半旬 | 1～ 5 | 18.6 | 26 | 2 | 1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.8 | 0 | 2 | 0 | 0 | 0 | ||||
| 第2半旬 | 6～10 | 34.9 | 49 | 0 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.6 | 0 | 1 | 0 | 0 | 0 | ||||
| 第3半旬 | 11～15 | 9.6 | 13 | 1 | 0 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.7 | 0 | 4 | 0 | 2 | 0 | ||||
| 第4半旬 | 16～20 | 16.7 | 23 | 3 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.3 | 0 | 3 | 0 | 1 | 0 | ||||
| 第5半旬 | 21～25 | 41.7 | 59 | 0 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.4 | 2 | 1 | 0 | 0 | 0 | ||||
| 第6半旬 | 26～31 | 45.2 | 54 | 0 | 5 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.6 | 0 | 2 | 0 | 1 | 1 | ||||
| 第1半旬 | 1～ 5 | 34.9 | 51 | 0 | 4 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.7 | 0 | 2 | 0 | 0 | 0 | ||||
| 第2半旬 | 6～10 | 23.2 | 34 | 1 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.9 | 0 | 3 | 0 | 0 | 2 | ||||
| 第3半旬 | 11～15 | 35.7 | 53 | 0 | 4 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.5 | 1 | 1 | 0 | 0 | 0 | ||||
| 第4半旬 | 16～20 | 38.5 | 58 | 0 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.5 | 0 | 1 | 0 | 0 | 0 | ||||
| 第5半旬 | 21～25 | 27.0 | 41 | 0 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.1 | 0 | 3 | 0 | 1 | 1 | ||||
| 第6半旬 | 26～31 | 49.4 | 63 | 1 | 5 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.4 | 2 | 2 | 0 | 0 | 0 | ||||
| 第1半旬 | 1～ 5 | 17.4 | 27 | 1 | 1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.9 | 0 | 4 | 0 | 0 | 0 | ||||
| 第2半旬 | 6～10 | 50.6 | 80 | 0 | 5 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.7 | 0 | 0 | 0 | 0 | 0 | ||||
| 第3半旬 | 11～15 | 26.9 | 43 | 0 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.5 | 1 | 3 | 0 | 0 | 1 | ||||
| 第4半旬 | 16～20 | 9.2 | 15 | 2 | 1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.5 | 0 | 4 | 0 | 0 | 1 | ||||
| 第5半旬 | 21～25 | 26.2 | 43 | 0 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.5 | 0 | 3 | 0 | 1 | 0 | ||||
| 第6半旬 | 26～30 | 8.0 | 13 | 2 | 1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.5 | 0 | 4 | 0 | 0 | 0 | ||||
| 第1半旬 | 1～ 5 | 27.6 | 47 | 0 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.2 | 1 | 2 | 0 | 0 | 0 | ||||
| 第2半旬 | 6～10 | 18.0 | 31 | 2 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.1 | 0 | 4 | 0 | 0 | 2 | ||||
| 第3半旬 | 11～15 | 24.8 | 44 | 1 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.9 | 0 | 2 | 0 | 0 | 0 | ||||
| 第4半旬 | 16～20 | 30.9 | 55 | 1 | 4 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.7 | 1 | 2 | 0 | 0 | 1 | ||||
| 第5半旬 | 21～25 | 7.9 | 14 | 3 | 1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.3 | 0 | 4 | 0 | 0 | 0 | ||||
| 第6半旬 | 26～31 | 22.6 | 35 | 1 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.1 | 1 | 3 | 0 | 0 | 1 | ||||
| 第1半旬 | 1～ 5 | 13.4 | 25 | 1 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.3 | 0 | 4 | 0 | 0 | 0 | ||||
| 第2半旬 | 6～10 | 21.6 | 41 | 1 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.1 | 1 | 2 | 0 | 0 | 0 | ||||
| 第3半旬 | 11～15 | 22.1 | 43 | 1 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.5 | 1 | 2 | 0 | 0 | 0 | ||||
| 第4半旬 | 16～20 | 33.0 | 65 | 0 | 4 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.7 | 1 | 0 | 0 | 0 | 0 | ||||
| 第5半旬 | 21～25 | 26.8 | 53 | 0 | 3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.9 | 1 | 1 | 0 | 0 | 0 | ||||
| 第6半旬 | 26～30 | 5.0 | 10 | 3 | 1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.8 | 0 | 5 | 0 | 0 | 0 | ||||
| 第1半旬 | 1～ 5 | 21.0 | 42 | 0 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.3 | 1 | 1 | 0 | 0 | 0 | ||||
| 第2半旬 | 6～10 | 12.8 | 26 | 1 | 1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.7 | 0 | 3 | 0 | 0 | 0 | ||||
| 第3半旬 | 11～15 | 15.5 | 32 | 2 | 2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.5 | 1 | 3 | 0 | 0 | 0 | ||||
| 第4半旬 | 16～20 | 33.4 | 69 | 0 | 4 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.1 | 2 | 0 | 0 | 0 | 0 | ||||
| 第5半旬 | 21～25 | 34.1 | 70 | 0 | 5 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.1 | 3 | 0 | 0 | 0 | 0 | ||||
| 第6半旬 | 26～31 | 45.2 | 77 | 0 | 6 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.1 | 4 | 0 | 0 | 0 | 0 | ||||