平年値（旬ごとの値）
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南鳥島（東京都) 平年値（旬ごとの値）
| 要素 | 海面気圧 (hPa) | 降水量 (mm) | 平均気温 (℃) | 日最高気温 (℃) | 日最低気温 (℃) | 相対湿度 (%) | 平均風速 (m/s) | 日照時間 (時) | 全天日射量 (MJ/㎡) | 降雪の深さ合計 (cm) | 最深積雪 (cm) | 雲量 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 統計期間 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2006 | 1991～ 2006 | 1991～ 2006 | |
| 資料年数 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 16 | 16 | 16 | |
| 1月 | 上旬 | 1015.5 | 24.5 | 22.8 | 25.0 | 20.7 | 69 | 5.7 | 54.1 | 12.3 | --- @ | --- @ | 5.9 @ |
| 中旬 | 1015.8 | 13.9 | 22.4 | 24.7 | 20.4 | 69 | 5.9 | 56.9 | 13.1 | --- @ | --- @ | 5.7 @ | |
| 下旬 | 1015.8 | 31.3 | 22.0 | 24.3 | 20.0 | 70 | 5.8 | 59.7 | 13.4 | --- @ | --- @ | 6.1 @ | |
| 2月 | 上旬 | 1015.9 | 17.0 | 21.7 | 24.2 | 19.5 | 70 | 5.7 | 60.7 | 14.9 | --- @ | --- @ | 5.5 @ |
| 中旬 | 1016.8 | 12.4 | 21.8 | 24.3 | 19.7 | 71 | 5.5 | 65.6 | 16.3 | --- @ | --- @ | 5.7 @ | |
| 下旬 | 1016.8 | 14.0 | 21.8 | 24.4 | 19.7 | 71 | 5.9 | 52.8 | 17.2 | --- @ | --- @ | 5.6 @ | |
| 3月 | 上旬 | 1016.6 | 19.8 | 22.2 | 24.8 | 20.2 | 73 | 6.3 | 67.6 | 18.1 | --- @ | --- @ | 5.4 @ |
| 中旬 | 1016.7 | 22.6 | 22.4 | 25.1 | 20.3 | 74 | 6.1 | 72.1 | 19.3 | --- @ | --- @ | 5.1 @ | |
| 下旬 | 1016.8 | 13.7 | 23.0 | 25.8 | 20.8 | 76 | 5.9 | 83.7 | 20.5 | --- @ | --- @ | 5.4 @ | |
| 4月 | 上旬 | 1016.5 | 17.1 | 23.6 | 26.4 | 21.6 | 77 | 5.6 | 74.9 | 21.1 | --- @ | --- @ | 5.5 @ |
| 中旬 | 1016.6 | 19.4 | 24.4 | 27.2 | 22.4 | 79 | 5.5 | 80.8 | 22.2 | --- @ | --- @ | 5.3 @ | |
| 下旬 | 1016.5 | 23.1 | 24.9 | 27.8 | 23.0 | 80 | 5.5 | 84.5 | 23.0 | --- @ | --- @ | 5.3 @ | |
| 5月 | 上旬 | 1015.9 | 28.4 | 25.5 | 28.3 | 23.5 | 79 | 5.5 | 84.9 | 23.3 | --- @ | --- @ | 5.7 @ |
| 中旬 | 1015.3 | 31.4 | 26.0 | 28.8 | 23.9 | 78 | 5.3 | 87.7 | 23.7 | --- @ | --- @ | 5.4 @ | |
| 下旬 | 1014.5 | 40.7 | 26.8 | 29.7 | 24.7 | 80 | 4.6 | 102.4 | 24.1 | --- @ | --- @ | 5.3 @ | |
| 6月 | 上旬 | 1014.5 | 19.4 | 27.5 | 30.5 | 25.3 | 78 | 4.2 | 102.1 | 25.4 | --- @ | --- @ | 4.7 @ |
| 中旬 | 1014.8 | 10.9 | 28.1 | 31.0 | 25.9 | 76 | 4.1 | 105.5 | 25.7 | --- @ | --- @ | 4.7 @ | |
| 下旬 | 1014.5 | 13.9 | 28.5 | 31.5 | 26.2 | 76 | 4.1 | 104.7 | 25.5 | --- @ | --- @ | 5.0 @ | |
| 7月 | 上旬 | 1013.9 | 25.1 | 28.6 | 31.6 | 26.2 | 76 | 4.1 | 97.6 | 24.4 | --- @ | --- @ | 5.2 @ |
| 中旬 | 1013.4 | 45.8 | 28.6 | 31.5 | 26.2 | 77 | 4.5 | 89.7 | 23.2 | --- @ | --- @ | 6.0 @ | |
| 下旬 | 1012.3 | 68.9 | 28.4 | 31.0 | 26.1 | 79 | 4.9 | 89.1 | 21.7 | --- @ | --- @ | 6.2 @ | |
| 8月 | 上旬 | 1012.2 | 55.0 | 28.3 | 31.0 | 26.0 | 79 | 5.4 | 79.5 | 21.2 | --- @ | --- @ | 5.9 @ |
| 中旬 | 1012.0 | 50.9 | 28.4 | 31.0 | 26.1 | 79 | 5.1 | 82.6 | 21.6 | --- @ | --- @ | 6.1 @ | |
| 下旬 | 1011.8 | 72.0 | 28.4 | 30.9 | 26.2 | 79 | 5.5 | 87.9 | 20.6 | --- @ | --- @ | 5.8 @ | |
| 9月 | 上旬 | 1012.0 | 43.9 | 28.5 | 31.0 | 26.3 | 80 | 5.3 | 80.0 | 20.3 | --- @ | --- @ | 5.6 @ |
| 中旬 | 1012.9 | 24.6 | 28.6 | 30.9 | 26.5 | 78 | 6.2 | 88.6 | 21.4 | --- @ | --- @ | 5.0 @ | |
| 下旬 | 1013.2 | 26.3 | 28.4 | 30.9 | 26.4 | 79 | 5.9 | 86.0 | 20.4 | --- @ | --- @ | 5.1 @ | |
| 10月 | 上旬 | 1013.5 | 27.1 | 28.2 | 30.5 | 26.2 | 78 | 6.9 | 82.6 | 19.3 | --- @ | --- @ | 4.5 @ |
| 中旬 | 1014.1 | 31.6 | 27.9 | 30.2 | 25.9 | 79 | 6.7 | 80.4 | 18.1 | --- @ | --- @ | 4.9 @ | |
| 下旬 | 1014.1 | 30.9 | 27.5 | 29.9 | 25.7 | 78 | 6.7 | 87.7 | 17.4 | --- @ | --- @ | 4.8 @ | |
| 11月 | 上旬 | 1015.3 | 33.3 | 27.0 | 29.2 | 25.2 | 77 | 6.5 | 74.5 | 15.8 | --- @ | --- @ | 4.5 @ |
| 中旬 | 1015.6 | 21.3 | 26.5 | 28.7 | 24.7 | 75 | 6.4 | 70.1 | 14.9 | --- @ | --- @ | 5.0 @ | |
| 下旬 | 1015.8 | 28.5 | 26.0 | 28.1 | 24.1 | 76 | 6.5 | 66.4 | 13.9 | --- @ | --- @ | 5.0 @ | |
| 12月 | 上旬 | 1016.1 | 18.8 | 25.4 | 27.5 | 23.5 | 75 | 6.2 | 63.3 | 13.1 | --- @ | --- @ | 5.2 @ |
| 中旬 | 1016.5 | 30.4 | 24.6 | 26.8 | 22.7 | 75 | 5.8 | 61.1 | 12.7 | --- @ | --- @ | 5.1 @ | |
| 下旬 | 1015.5 | 41.6 | 23.7 | 25.9 | 21.8 | 73 | 6.2 | 57.8 | 11.9 | --- @ | --- @ | 6.1 @ | |
- 「@」の付いた値は、参考値です。平年差や平年比に利用できません。