指定気圧面の観測データ（日ごとの値）
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南鳥島 2012年8月9時 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 1009.8 | 9 | 26.1 | 87 | 8.1 | 120 |
| 2 | 1009.1 | 9 | 27.5 | 80 | 1.9 | 80 |
| 3 | 1010.8 | 9 | 27.5 | 79 | 6.0 | 60 |
| 4 | 1012.0 | 9 | 28.1 | 76 | 1.7 | 110 |
| 5 | 1009.1 | 9 | 28.9 | 59 | 8.9 | 30 |
| 6 | 1007.4 | 9 | 29.1 | 70 | 7.0 | 10 |
| 7 | 1007.4 | 9 | 29.1 | 72 | 3.6 | 350 |
| 8 | 1008.4 | 9 | 28.0 | 73 | 1.5 | 320 |
| 9 | 1009.6 | 9 | 29.5 | 64 | 5.2 | 210 |
| 10 | 1012.3 | 9 | 29.6 | 70 | 3.6 | 130 |
| 11 | 1012.6 | 9 | 29.1 | 68 | 4.8 | 60 |
| 12 | 1012.0 | 9 | 29.3 | 69 | 6.5 | 100 |
| 13 | 1013.8 | 9 | 28.3 | 73 | 6.2 | 130 |
| 14 | 1015.5 | 9 | 29.6 | 65 | 5.0 | 110 |
| 15 | 1016.3 | 9 | 29.0 | 70 | 2.5 | 70 |
| 16 | 1013.3 | 9 | 25.5 | 80 | 1.1 | 220 |
| 17 | 1011.8 | 9 | 24.1 | 85 | 4.6 | 140 |
| 18 | 1012.1 | 9 | 27.2 | 74 | 2.7 | 120 |
| 19 | 1013.8 | 9 | 29.5 | 75 | 5.0 | 110 |
| 20 | 1014.0 | 9 | 28.9 | 75 | 5.0 | 80 |
| 21 | 1013.7 | 9 | 29.2 | 69 | 6.6 | 80 |
| 22 | 1013.7 | 9 | 28.3 | 68 | 6.2 | 80 |
| 23 | 1013.5 | 9 | 27.8 | 76 | 6.0 | 40 |
| 24 | 1013.4 | 9 | 28.7 | 75 | 3.2 | 200 |
| 25 | 1014.1 | 9 | 28.7 | 71 | 2.2 | 120 |
| 26 | 1013.0 | 9 | 29.5 | 68 | 4.0 | 100 |
| 27 | 1013.2 | 9 | 28.7 | 71 | 6.1 | 80 |
| 28 | 1013.4 | 9 | 23.9 | 90 | 6.5 | 140 |
| 29 | 1013.5 | 9 | 26.8 | 80 | 4.6 | 120 |
| 30 | 1012.0 | 9 | 28.8 | 70 | 3.4 | 80 |
| 31 | 1008.6 | 9 | 28.3 | 77 | 2.4 | 120 |