月ごとの値
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室蘭（胆振地方) 1983年（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 | ||||||||||||||||||||||||||||
| 116.0 | 40 | 1 | 14 | 5.8 | 12 | 6 | 19 | 2 | 1 | 0 | 0 | 0 | 0 | 8 | 19 | 21 | 17 | 5 | 0 | 0 | 0 | 0 | 7.6 | 1 | 16 | 26 | 0 | 0 | |
| 107.8 | 37 | 5 | 14 | 8.2 | 50 | 13 | 09 | 6 | 4 | 2 | 0 | 0 | 0 | 21 | 21 | 24 | 23 | 18 | 5 | 1 | 0 | 0 | 8.4 | 0 | 15 | 28 | 0 | 1 | |
| 248.1 | 67 | 1 | 26 | 15.9 | 24 | 9 | 17* | 3 | 2 | 0 | 0 | 0 | 0 | 18 | 03 | 19 | 18 | 10 | 5 | 0 | 0 | 0 | 5.6 | 3 | 8 | 19 | 0 | 0 | |
| 229.4 | 58 | 2 | 21 | 17.5 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.0 | 3 | 8 | 0 | 4 | 0 | |||
| 219.2 | 49 | 3 | 21 | 19.0 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.1 | 3 | 7 | 0 | 3 | 1 | |||
| 117.6 | 26 | 12 | 9 | 13.7 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.0 | 1 | 19 | 0 | 4 | 2 | |||
| 124.2 | 27 | 10 | 12 | 14.7 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.9 | 0 | 20 | 0 | 11 | 1 | |||
| 162.4 | 38 | 12 | 14 | 14.4 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.1 | 4 | 14 | 0 | 7 | 1 | |||
| 182.8 | 49 | 7 | 20 | 12.9 ) | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.3 | 2 | 9 | 0 | 0 | 2 | |||
| 206.1 | 60 | 1 | 24 | 11.4 | 0 | 0 | 30* | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 30 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5.6 | 3 | 4 | 2 | 0 | 2 | |
| 143.2 | 49 | 3 | 20 | 7.0 ) | 4 | 4 | 22 | 1 | 0 | 0 | 0 | 0 | 0 | 4 | 22 | 7 | 1 | 0 | 0 | 0 | 0 | 0 | 5.8 | 2 | 6 | 7 | 0 | 1 | |
| 111.1 | 39 | 5 | 17 | 5.3 | 25 | 12 | 25 | 3 | 2 | 1 | 0 | 0 | 0 | 15 | 26 | 20 | 12 | 9 | 5 | 0 | 0 | 0 | 7.3 | 1 | 16 | 19 | 0 | 0 | |