３か月ごとの値
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銚子（千葉県) 1999年（３か月ごとの値） 詳細（日照・雪・その他）
| 月 | 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 | ||||||||||||||||||||||||||||
11～1 | 524.0 | 57 | 11 | 60 | 9.1 | 0 | 0 | 01/09 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.9 | 19 | 21 | 1 | 1 | 0 | |
12～2 | 564.8 | 62 | 12 | 65 | 10.2 | 0 | 0 | 02/28* | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.4 | 24 | 15 | 3 | 1 | 0 | |
1～3 | 536.7 | 55 | 16 | 59 | 11.5 | 0 | 0 | 03/20* | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.2 | 18 | 22 | 3 | 3 | 0 | |
2～4 | 485.7 | 46 | 18 | 51 | 13.6 | 0 | 0 | 03/20* | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.3 | 8 | 30 | 2 | 3 | 4 | |
3～5 | 492.6 | 41 | 18 | 48 | 15.9 | 0 | 0 | 03/20 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.3 | 4 | 43 | 0 | 5 | 4 | |
4～6 | 524.7 | 42 | 16 | 50 | 17.8 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.6 | 5 | 46 | 0 | 9 | 5 | ||
5～7 | 559.7 | 43 | 16 | 51 | 19.0 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.7 | 5 | 51 | 0 | 11 | 2 | ||
6～8 | 651.9 | 50 | 13 | 56 | 20.1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.8 | 8 | 42 | 0 | 14 | 2 | ||
7～9 | 665.6 | 54 | 7 | 60 | 19.7 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.3 | 8 | 33 | 0 | 8 | 1 | ||
8～10 | 600.3 | 53 | 6 | 57 | 16.7 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.1 | 9 | 29 | 0 | 7 | 1 | ||
9～11 | 452.8 | 44 | 12 | 51 | 12.3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.6 | 5 | 30 | 0 | 2 | 3 | ||
10～12 | 454.8 | 47 | 13 | 53 | 9.8 | 0 | 0 | 12/15 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.8 | 13 | 25 | 0 | 2 | 4 | |