平年値（旬ごとの値）
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大瀬戸（長崎県) 平年値（旬ごとの値）
| 要素 | 降水量 (mm) | 平均気温 (℃) | 日最高気温 (℃) | 日最低気温 (℃) | 平均風速 (m/s) | 日照時間 (h) | 降雪の深さ合計 (cm) | 最深積雪 (cm) | |
|---|---|---|---|---|---|---|---|---|---|
| 統計期間 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | /// | /// | |
| 資料年数 | 30 | 30 | 30 | 30 | 30 | 28 | 0 | 0 | |
| 1月 | 上旬 | 16.2 | 7.9 | 10.9 | 5.1 | 2.9 | 33.5 | /// | /// |
| 中旬 | 23.4 | 7.4 | 10.3 | 4.6 | 2.9 | 32.4 | /// | /// | |
| 下旬 | 22.7 | 6.9 | 10.1 | 4.1 | 3.0 | 38.2 | /// | /// | |
| 2月 | 上旬 | 17.6 | 7.2 | 10.5 | 4.2 | 2.8 | 41.5 | /// | /// |
| 中旬 | 28.3 | 8.0 | 11.6 | 4.8 | 2.9 | 46.2 | /// | /// | |
| 下旬 | 27.6 | 9.1 | 13.0 | 5.5 | 2.8 | 43.9 | /// | /// | |
| 3月 | 上旬 | 33.8 | 9.6 | 13.4 | 6.2 | 2.8 | 53.6 | /// | /// |
| 中旬 | 39.1 | 10.8 | 15.0 | 7.1 | 2.7 | 58.6 | /// | /// | |
| 下旬 | 41.5 | 11.8 | 15.9 | 8.3 | 2.5 | 64.5 | /// | /// | |
| 4月 | 上旬 | 46.6 | 13.6 | 17.7 | 9.9 | 2.4 | 63.7 | /// | /// |
| 中旬 | 44.4 | 14.7 | 19.1 | 11.0 | 2.3 | 68.2 | /// | /// | |
| 下旬 | 51.7 | 16.0 | 20.1 | 12.5 | 2.2 | 67.3 | /// | /// | |
| 5月 | 上旬 | 58.8 | 17.5 | 21.4 | 14.1 | 2.1 | 65.2 | /// | /// |
| 中旬 | 56.0 | 18.3 | 22.2 | 14.8 | 2.0 | 67.9 | /// | /// | |
| 下旬 | 36.6 | 19.5 | 23.3 | 16.1 | 1.7 | 75.4 | /// | /// | |
| 6月 | 上旬 | 41.0 | 20.7 | 24.6 | 17.5 | 1.7 | 60.0 | /// | /// |
| 中旬 | 87.9 | 21.6 | 24.9 | 19.0 | 1.8 | 51.2 | /// | /// | |
| 下旬 | 139.5 | 22.6 | 25.2 | 20.5 | 1.9 | 28.8 | /// | /// | |
| 7月 | 上旬 | 145.7 | 24.2 | 26.8 | 22.2 | 2.2 | 36.4 | /// | /// |
| 中旬 | 71.5 | 25.5 | 28.4 | 23.3 | 2.0 | 54.6 | /// | /// | |
| 下旬 | 43.2 | 26.7 | 30.1 | 24.2 | 1.8 | 89.3 | /// | /// | |
| 8月 | 上旬 | 40.4 | 27.2 | 30.7 | 24.6 | 1.8 | 79.6 | /// | /// |
| 中旬 | 70.8 | 26.8 | 30.3 | 24.4 | 1.9 | 73.6 | /// | /// | |
| 下旬 | 86.1 | 26.1 | 29.7 | 23.4 | 1.9 | 76.1 | /// | /// | |
| 9月 | 上旬 | 65.0 | 24.9 | 28.7 | 22.1 | 2.1 | 69.6 | /// | /// |
| 中旬 | 55.2 | 23.9 | 27.7 | 21.0 | 2.3 | 68.7 | /// | /// | |
| 下旬 | 58.3 | 22.2 | 26.1 | 19.2 | 2.3 | 60.1 | /// | /// | |
| 10月 | 上旬 | 30.7 | 20.8 | 24.8 | 17.7 | 2.5 | 65.7 | /// | /// |
| 中旬 | 25.2 | 19.2 | 23.2 | 16.0 | 2.6 | 69.6 | /// | /// | |
| 下旬 | 42.2 | 17.5 | 21.2 | 14.4 | 2.5 | 66.9 | /// | /// | |
| 11月 | 上旬 | 35.8 | 16.2 | 19.8 | 13.0 | 2.4 | 55.7 | /// | /// |
| 中旬 | 36.3 | 14.2 | 17.7 | 11.1 | 2.6 | 48.3 | /// | /// | |
| 下旬 | 28.8 | 12.6 | 16.1 | 9.4 | 2.6 | 46.6 | /// | /// | |
| 12月 | 上旬 | 38.0 | 10.7 | 14.0 | 7.7 | 2.8 | 40.5 | /// | /// |
| 中旬 | 17.9 | 9.3 | 12.4 | 6.3 | 2.9 | 34.9 | /// | /// | |
| 下旬 | 20.8 | 8.8 | 12.0 | 5.8 | 2.8 | 41.4 | /// | /// | |