月ごとの値
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室蘭（胆振地方) 2010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 | ||||||||||||||||||||||||||||
| 83.9 | 29 | 5 | 9 | 5.5 | 89 | 27 | 05 | 10 | 4 | 1 | 1 | 0 | 0 | 32 | 05 | 31 | 31 | 31 | 21 | 5 | 0 | 0 | 8.4 | 0 | 19 | 30 | 0 | 0 | |
| 112.5 | 38 | 1 | 14 | 8.8 | 57 | 9 | 18 | 8 | 3 | 0 | 0 | 0 | 0 | 16 | 20* | 27 | 25 | 25 | 10 | 0 | 0 | 0 | 7.8 | 0 | 12 | 24 | 0 | 1 | |
| 150.4 | 41 | 5 | 15 | 12.5 | 61 | 20 | 03 | 6 | 4 | 2 | 1 | 0 | 0 | 24 | 05 | 29 | 21 | 16 | 14 | 2 | 0 | 0 | 7.8 | 0 | 14 | 27 | 0 | 0 | |
| 161.0 | 40 | 8 | 15 | 15.0 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 7.7 | 1 | 16 | 5 | 2 | 0 | ||
| 168.6 | 37 | 9 | 16 | 16.7 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.1 | 1 | 18 | 0 | 10 | 0 | |||
| 158.7 | 35 | 4 | 11 | 19.0 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.3 | 0 | 19 | 0 | 17 | 2 | |||
| 110.2 | 24 | 4 | 10 | 15.8 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.3 | 0 | 26 | 0 | 11 | 2 | |||
| 162.5 | 38 | 4 | 14 | 15.7 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.0 | 0 | 13 | 0 | 6 | 3 | |||
| 194.1 | 52 | 1 | 20 | 15.4 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.4 | 1 | 7 | 0 | 0 | 0 | |||
| 157.8 | 46 | 5 | 18 | 10.0 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.8 | 2 | 13 | 2 | 0 | 1 | |||
| 95.8 | 33 | 4 | 12 | 6.0 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 30* | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 7.4 | 0 | 13 | 5 | 0 | 3 | ||
| 63.4 | 22 | 6 | 10 | 4.3 | 60 | 21 | 29 | 6 | 5 | 2 | 1 | 0 | 0 | 26 | 29 | 20 | 12 | 11 | 6 | 2 | 0 | 0 | 8.9 | 0 | 20 | 23 | 0 | 0 | |