月ごとの値
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室蘭（胆振地方) 2018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 | ||||||||||||||||||||||||||||
| 57.3 | 20 | 5 | 4 | 4.8 | 48 | 8 | 28 | 8 | 4 | 0 | 0 | 0 | 0 | 15 | 29* | 29 | 25 | 11 | 4 | 0 | 0 | 0 | 8.9 | 0 | 26 | 30 | 0 | 0 | |
| 113.5 | 39 | 1 | 15 | 9.2 | 57 | 11 | 04 | 7 | 5 | 1 | 0 | 0 | 0 | 29 | 21 | 28 | 28 | 28 | 28 | 22 | 0 | 0 | 8.1 | 0 | 13 | 28 | 0 | 0 | |
| 179.9 | 49 | 6 | 18 | 13.1 | 17 | 7 | 01 | 3 | 1 | 0 | 0 | 0 | 0 | 30 | 01 | 15 | 14 | 14 | 12 | 8 | 0 | 0 | 6.9 | 2 | 13 | 14 | 1 | 0 | |
| 184.8 | 46 | 7 | 19 | 15.9 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.9 | 1 | 10 | 6 | 1 | 1 | |||
| 208.3 | 46 | 5 | 18 | 19.1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.3 | 1 | 13 | 0 | 4 | 1 | |||
| 162.2 | 36 | 10 | 14 | 17.8 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.9 | 1 | 16 | 0 | 7 | 1 | |||
| 80.1 | 17 | 9 | 5 | 14.1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.9 | 0 | 23 | 0 | 17 | 0 | |||
| 121.8 ) | 28 ) | 7 ) | 9 ) | 13.9 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.7 | 0 | 23 | 0 | 5 | 3 | |||
| 181.0 | 48 | 5 | 17 | 14.1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.0 | 2 | 12 | 0 | 0 | 1 | |||
| 196.6 | 57 | 1 | 21 | 11.6 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.8 | 3 | 10 | 0 | 0 | 0 | |||
| 115.9 | 40 | 1 | 14 | 6.9 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 30* | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 7.2 | 1 | 13 | 6 | 0 | 1 | ||
| 64.9 | 23 | 4 | 5 | 4.5 | 34 | 13 | 12 | 4 | 2 | 1 | 0 | 0 | 0 | 13 | 12 | 23 | 10 | 6 | 3 | 0 | 0 | 0 | 8.5 | 0 | 21 | 27 | 0 | 0 | |