平年値（日ごとの値）
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八丈島 8月21時
| 要素 | 気温(℃) | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 指定気圧面 | 1000hPa | 925hPa | 900hPa | 850hPa | 800hPa | 700hPa | 600hPa | 500hPa | 400hPa | 350hPa | 300hPa | 250hPa | 200hPa | 175hPa | 150hPa | 125hPa | 100hPa | 70hPa | 50hPa | 40hPa | 30hPa | 20hPa | 15hPa | 10hPa | 5hPa |
| 統計期間 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1993～ 2020 |
| 資料年数 | 21 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 28 | 24 | 3 |
| 1日 | /// | 22.2 | 21.5 | 19.2 | 16.7 | 10.8 | 3.9 | -4.2 | -14.4 | -21.1 | -29.4 | -39.4 | -51.3 | -57.6 | -63.9 | -69.1 | -71.2 | -66.4 | -60.1 | -56.9 | -53.5 | -48.7 | -45.3 | /// | /// |
| 2日 | /// | 22.2 | 21.5 | 19.2 | 16.7 | 10.8 | 3.9 | -4.2 | -14.4 | -21.1 | -29.4 | -39.4 | -51.3 | -57.6 | -63.9 | -69.1 | -71.2 | -66.5 | -60.1 | -57.0 | -53.5 | -48.7 | -45.3 | /// | /// |
| 3日 | /// | 22.2 | 21.5 | 19.2 | 16.7 | 10.8 | 3.9 | -4.1 | -14.4 | -21.1 | -29.3 | -39.4 | -51.3 | -57.6 | -63.9 | -69.1 | -71.2 | -66.6 | -60.1 | -57.0 | -53.6 | -48.7 | -45.3 | /// | /// |
| 4日 | /// | 22.3 | 21.5 | 19.3 | 16.7 | 10.9 | 4.0 | -4.1 | -14.3 | -21.0 | -29.3 | -39.3 | -51.2 | -57.6 | -63.9 | -69.1 | -71.2 | -66.6 | -60.2 | -57.0 | -53.6 | -48.7 | -45.3 | /// | /// |
| 5日 | /// | 22.3 | 21.5 | 19.3 | 16.8 | 10.9 | 4.0 | -4.1 | -14.3 | -21.0 | -29.2 | -39.3 | -51.2 | -57.6 | -63.9 | -69.2 | -71.2 | -66.7 | -60.2 | -57.0 | -53.6 | -48.7 | -45.3 | /// | /// |
| 6日 | /// | 22.3 | 21.5 | 19.3 | 16.8 | 11.0 | 4.0 | -4.0 | -14.3 | -20.9 | -29.2 | -39.2 | -51.2 | -57.6 | -64.0 | -69.2 | -71.3 | -66.7 | -60.2 | -57.0 | -53.6 | -48.7 | /// | /// | /// |
| 7日 | /// | 22.3 | 21.5 | 19.3 | 16.8 | 11.0 | 4.1 | -4.0 | -14.2 | -20.9 | -29.1 | -39.2 | -51.2 | -57.6 | -64.0 | -69.2 | -71.4 | -66.7 | -60.2 | -57.0 | -53.6 | -48.7 | /// | /// | /// |
| 8日 | /// | 22.4 | 21.6 | 19.4 | 16.8 | 11.0 | 4.2 | -3.9 | -14.2 | -20.8 | -29.1 | -39.1 | -51.1 | -57.6 | -64.0 | -69.3 | -71.5 | -66.8 | -60.2 | -57.0 | -53.6 | -48.7 | /// | /// | /// |
| 9日 | /// | 22.4 | 21.6 | 19.4 | 16.9 | 11.1 | 4.2 | -3.9 | -14.1 | -20.8 | -29.0 | -39.1 | -51.1 | -57.6 | -64.0 | -69.4 | -71.6 | -66.8 | -60.2 | -57.0 | -53.6 | -48.7 | /// | /// | /// |
| 10日 | /// | 22.4 | 21.6 | 19.4 | 16.9 | 11.1 | 4.3 | -3.9 | -14.1 | -20.7 | -29.0 | -39.0 | -51.1 | -57.6 | -64.0 | -69.4 | -71.7 | -66.8 | -60.2 | -57.0 | -53.6 | -48.7 | /// | /// | /// |
| 11日 | /// | 22.4 | 21.6 | 19.4 | 16.9 | 11.2 | 4.3 | -3.8 | -14.0 | -20.7 | -28.9 | -39.0 | -51.0 | -57.6 | -64.1 | -69.5 | -71.8 | -66.8 | -60.2 | -57.0 | -53.6 | -48.7 | /// | /// | /// |
| 12日 | /// | 22.4 | 21.6 | 19.5 | 16.9 | 11.2 | 4.4 | -3.8 | -14.0 | -20.7 | -28.9 | -39.0 | -51.0 | -57.5 | -64.0 | -69.6 | -71.9 | -66.9 | -60.2 | -57.0 | -53.6 | -48.7 | /// | /// | /// |
| 13日 | /// | 22.4 | 21.6 | 19.5 | 16.9 | 11.2 | 4.4 | -3.8 | -14.0 | -20.7 | -28.9 | -39.0 | -51.0 | -57.5 | -64.0 | -69.6 | -72.0 | -66.9 | -60.2 | -57.1 | -53.6 | -48.7 | /// | /// | /// |
| 14日 | /// | 22.4 | 21.6 | 19.5 | 16.9 | 11.2 | 4.4 | -3.8 | -14.0 | -20.7 | -28.9 | -39.0 | -51.0 | -57.5 | -64.0 | -69.6 | -72.1 | -66.9 | -60.2 | -57.1 | -53.6 | -48.7 | /// | /// | /// |
| 15日 | /// | 22.4 | 21.6 | 19.5 | 16.8 | 11.2 | 4.4 | -3.8 | -14.1 | -20.8 | -29.0 | -39.0 | -51.0 | -57.5 | -64.0 | -69.6 | -72.2 | -66.9 | -60.2 | -57.1 | -53.6 | -48.7 | /// | /// | /// |
| 16日 | /// | 22.4 | 21.6 | 19.4 | 16.8 | 11.2 | 4.4 | -3.8 | -14.1 | -20.8 | -29.0 | -39.0 | -51.0 | -57.5 | -63.9 | -69.5 | -72.2 | -66.8 | -60.2 | -57.1 | -53.6 | -48.7 | /// | /// | /// |
| 17日 | /// | 22.3 | 21.5 | 19.4 | 16.8 | 11.1 | 4.3 | -3.9 | -14.2 | -20.9 | -29.1 | -39.1 | -51.1 | -57.5 | -63.9 | -69.5 | -72.2 | -66.8 | -60.2 | -57.1 | -53.6 | -48.7 | /// | /// | /// |
| 18日 | /// | 22.3 | 21.5 | 19.4 | 16.7 | 11.1 | 4.2 | -4.0 | -14.3 | -21.0 | -29.2 | -39.2 | -51.1 | -57.5 | -63.8 | -69.4 | -72.2 | -66.8 | -60.2 | -57.1 | -53.6 | -48.8 | /// | /// | /// |
| 19日 | /// | 22.3 | 21.5 | 19.3 | 16.7 | 11.0 | 4.2 | -4.0 | -14.4 | -21.1 | -29.3 | -39.2 | -51.1 | -57.5 | -63.8 | -69.4 | -72.2 | -66.8 | -60.2 | -57.1 | -53.6 | -48.8 | /// | /// | /// |
| 20日 | /// | 22.2 | 21.4 | 19.3 | 16.6 | 11.0 | 4.1 | -4.1 | -14.5 | -21.2 | -29.4 | -39.3 | -51.2 | -57.5 | -63.7 | -69.3 | -72.1 | -66.8 | -60.2 | -57.1 | -53.7 | -48.8 | /// | /// | /// |
| 21日 | /// | 22.2 | 21.4 | 19.2 | 16.5 | 10.9 | 4.0 | -4.2 | -14.6 | -21.3 | -29.5 | -39.4 | -51.2 | -57.5 | -63.7 | -69.3 | -72.1 | -66.8 | -60.3 | -57.1 | -53.7 | -48.8 | /// | /// | /// |
| 22日 | /// | 22.2 | 21.4 | 19.1 | 16.5 | 10.9 | 4.0 | -4.2 | -14.6 | -21.3 | -29.6 | -39.4 | -51.2 | -57.6 | -63.7 | -69.3 | -72.0 | -66.8 | -60.3 | -57.1 | -53.7 | -48.9 | /// | /// | /// |
| 23日 | /// | 22.1 | 21.3 | 19.1 | 16.4 | 10.8 | 3.9 | -4.3 | -14.7 | -21.4 | -29.6 | -39.5 | -51.3 | -57.6 | -63.7 | -69.3 | -72.0 | -66.8 | -60.3 | -57.1 | -53.7 | -48.9 | /// | /// | /// |
| 24日 | /// | 22.1 | 21.3 | 19.0 | 16.4 | 10.7 | 3.9 | -4.3 | -14.7 | -21.4 | -29.7 | -39.6 | -51.3 | -57.6 | -63.7 | -69.3 | -72.0 | -66.8 | -60.3 | -57.1 | -53.7 | -48.9 | /// | /// | /// |
| 25日 | /// | 22.1 | 21.2 | 19.0 | 16.3 | 10.7 | 3.8 | -4.4 | -14.8 | -21.5 | -29.7 | -39.6 | -51.3 | -57.6 | -63.7 | -69.3 | -72.0 | -66.8 | -60.4 | -57.1 | -53.7 | -48.9 | /// | /// | /// |
| 26日 | /// | 22.0 | 21.2 | 18.9 | 16.3 | 10.6 | 3.8 | -4.4 | -14.8 | -21.5 | -29.8 | -39.7 | -51.3 | -57.6 | -63.7 | -69.3 | -72.0 | -66.9 | -60.4 | -57.1 | -53.7 | -48.9 | /// | /// | /// |
| 27日 | /// | 22.0 | 21.1 | 18.9 | 16.2 | 10.6 | 3.8 | -4.4 | -14.8 | -21.5 | -29.8 | -39.7 | -51.4 | -57.6 | -63.7 | -69.3 | -72.0 | -66.9 | -60.4 | -57.1 | -53.8 | -49.0 | /// | /// | /// |
| 28日 | /// | 21.9 | 21.1 | 18.8 | 16.2 | 10.6 | 3.8 | -4.4 | -14.8 | -21.5 | -29.8 | -39.7 | -51.4 | -57.6 | -63.7 | -69.4 | -72.1 | -67.0 | -60.5 | -57.2 | -53.8 | -49.0 | /// | /// | /// |
| 29日 | /// | 21.9 | 21.0 | 18.8 | 16.1 | 10.5 | 3.8 | -4.4 | -14.8 | -21.5 | -29.8 | -39.7 | -51.4 | -57.6 | -63.7 | -69.4 | -72.1 | -67.0 | -60.5 | -57.2 | -53.8 | -49.0 | /// | /// | /// |
| 30日 | /// | 21.8 | 21.0 | 18.7 | 16.1 | 10.5 | 3.7 | -4.4 | -14.8 | -21.6 | -29.8 | -39.8 | -51.4 | -57.6 | -63.8 | -69.4 | -72.2 | -67.1 | -60.5 | -57.2 | -53.8 | -49.0 | /// | /// | /// |
| 31日 | /// | 21.8 | 20.9 | 18.7 | 16.0 | 10.4 | 3.7 | -4.4 | -14.8 | -21.6 | -29.8 | -39.8 | -51.4 | -57.6 | -63.8 | -69.5 | -72.2 | -67.1 | -60.6 | -57.2 | -53.9 | -49.0 | /// | /// | /// |