月ごとの値
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八丈島（東京都) 1976年（月ごとの値） 詳細（気温・蒸気圧・湿度）
| 月 | 気温(℃) | 蒸気圧 (hPa) | 湿度(％) | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 日平均 | 最高気温 | 最低気温 | 各階級の日数（平均） | 各階級の日数（最低） | 各階級の日数（最高） | ||||||||||||||||||
| 平均 | 平均 | 最高 | 最低 | 平均 | 最低 | 最高 | ＜0℃ | ≧25℃ | ＜0℃ | ≧25℃ | ＜0℃ | ≧25℃ | ≧30℃ | ≧35℃ | 平均 | 平均 | 最小 | ||||||
| 値 | 日 | 値 | 日 | 値 | 日 | 値 | 日 | 値 | 日 | ||||||||||||||
| 10.1 | 12.7 | 18.9 | 04 | 6.9 | 23 | 7.5 | 2.7 | 23 | 13.2 | 04 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.9 | 62 | 37 | 19 | |
| 12.0 | 14.8 | 19.0 | 29 | 9.0 | 13 | 9.4 | 4.9 | 07 | 16.0 | 16 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.4 | 70 | 36 | 11 | |
| 12.8 | 15.5 | 19.9 | 12 | 9.5 | 20 | 10.2 | 5.7 | 04 | 14.7 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11.1 | 73 | 33 | 22 | |
| 16.2 | 18.9 | 23.3 | 30 | 13.8 | 04 | 13.8 | 8.8 | 06 | 18.0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.9 | 78 | 41 | 02 | |
| 19.2 | 22.1 | 27.0 | 25 | 17.3 | 03 | 16.3 | 12.1 | 15 | 21.2 | 22 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 17.9 | 79 | 38 | 14 | |
| 22.0 | 24.1 | 26.5 | 26 | 19.8 | 20 | 20.1 | 16.7 | 15 | 24.2 | 25 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 23.5 | 88 | 57 | 18 | |
| 23.9 | 26.5 | 29.0 | 25* | 19.7 | 03 | 21.6 | 15.6 | 05 | 25.3 | 17 | 0 | 15 | 0 | 1 | 0 | 23 | 0 | 0 | 25.5 | 85 | 56 | 02* | |
| 26.4 | 28.7 | 30.6 | 15 | 25.0 | 27 | 24.5 | 22.7 | 27 | 26.2 | 23 | 0 | 28 | 0 | 13 | 0 | 31 | 2 | 0 | 29.8 | 86 | 62 | 19 | |
| 24.0 | 26.5 | 29.1 | 08 | 21.0 | 27 | 21.6 | 17.1 | 24 | 26.4 | 09 | 0 | 12 | 0 | 4 | 0 | 22 | 0 | 0 | 23.8 | 79 | 50 | 26 | |
| 20.5 | 23.2 | 25.8 | 04 | 17.8 | 30 | 17.7 | 13.7 | 30 | 21.2 | 21 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 18.7 | 76 | 46 | 29 | |
| 16.3 | 18.8 | 23.5 | 09 | 12.3 | 30 | 13.9 | 6.7 | 29 | 19.7 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.0 | 73 | 44 | 29 | |
| 12.8 | 15.4 | 19.5 | 25 | 5.4 | 28 | 10.4 | 2.1 | 28 | 15.1 | 04 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.0 | 66 | 36 | 31 | |