観測開始からの毎月の値
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室蘭（胆振地方) 現地気圧の月平均値（hPa）
| 年 | 1月 | 2月 | 3月 | 4月 | 5月 | 6月 | 7月 | 8月 | 9月 | 10月 | 11月 | 12月 | 年の値 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1007.9 | 1011.2 | 1010.8 | 1015.4 | 1009.8 | 1007.6 | 1006.8 | 1006.2 | 1010.0 | 1015.1 | 1014.4 | 1009.9 | 1010.4 | |
| 1013.1 | 1013.0 | 1011.4 | 1011.4 | 1007.6 | 1005.2 | 1007.8 | 1007.4 | 1009.2 | 1013.5 | 1012.6 | 1011.7 | 1010.3 | |
| 1008.8 | 1011.2 | 1009.8 | 1009.7 | 1006.7 | 1003.5 | 1004.1 | 1005.3 | 1007.0 | 1011.5 | 1014.4 | 1012.6 | 1008.7 | |
| 1006.7 | 1012.6 | 1008.0 | 1008.6 | 1008.8 | 1005.0 | 1004.7 | 1005.1 | 1008.8 | 1012.0 | 1010.6 | 1013.9 | 1008.7 | |
| 1010.1 | 1009.9 | 1011.7 | 1008.8 | 1004.8 | 1008.5 | 1006.6 | 1005.8 | 1007.3 | 1013.2 | 1013.3 | 1011.7 | 1009.3 | |
| 1008.4 | 1004.5 | 1013.0 | 1008.7 | 1007.2 | 1003.2 | 1003.1 | 1005.0 | 1008.3 | 1009.6 | 1012.1 | 1006.0 | 1007.4 | |
| 1004.4 | 1004.8 | 1011.2 | 1006.2 | 1005.5 | 1004.4 | 1005.4 | 1004.0 | 1009.3 | 1014.0 | 1012.9 | 1008.3 | 1007.5 | |
| 1009.7 | 1011.3 | 1005.8 | 1008.0 | 1006.4 | 1005.1 | 1003.7 | 1005.3 | 1007.2 | 1008.8 | 1013.1 | 1009.2 | 1007.8 | |
| 1007.7 | 1009.8 | 1006.1 | 1008.4 | 1005.8 | 1004.4 | 1003.4 | 1006.0 | 1007.4 | 1013.9 | 1014.5 | 1010.1 | 1008.1 | |
| 1006.4 | 1014.2 | 1013.0 | 1006.3 | 1005.8 | 1005.2 | 1002.0 | 1003.4 | 1006.6 | 1011.5 | 1013.4 | 1011.4 | 1008.3 | |
| 1007.1 | 1008.3 | 1009.3 | 1008.2 | 1006.1 | 1005.2 | 1004.0 | 1006.3 | 1008.4 | 1014.8 | 1012.6 | 1007.3 | 1008.1 | |
| 1008.6 | 1004.2 | 1011.4 | 1006.8 | 1004.4 | 1004.1 | 1002.8 | 1005.3 | 1007.9 | 1013.6 | 1013.2 | 1008.1 | 1007.5 | |
| 1003.2 | 1007.5 | 1004.6 | 1009.7 | 1004.9 | 1003.4 | 1004.9 | 1005.1 | 1008.0 | 1012.5 | 1013.6 | 1009.1 | 1007.2 | |
| 995.4 | 1007.2 | 1009.3 | 1012.3 | 1006.5 | 1007.1 | 1005.3 | 1003.8 | 1004.9 | 1013.8 | 1010.3 | 1008.7 | 1007.1 | |
| 1012.3 | 1014.4 | 1010.1 | 1014.7 | 1010.1 | 1003.0 | 1003.0 | 1005.3 | 1008.5 | 1014.1 | 1010.0 | 1011.5 | 1009.8 | |
| 1006.8 | 1004.4 | 1005.5 | 1006.2 | 1005.6 | 1004.0 | 1001.7 | 1005.3 | 1004.7 | 1012.2 | 1009.6 | 1006.3 | 1006.0 | |
| 1004.0 | 1007.6 | 1002.8 | 1009.1 | 1006.0 | 1006.9 | 1002.5 | 1004.5 | 1006.2 | 1010.1 | 1008.4 | 1008.6 | 1006.4 | |
| 1006.5 | 1010.7 | 1007.4 | 1011.7 | 1006.9 | 1001.3 | 1002.3 | 1001.8 | 1008.6 | 1010.4 | 1014.0 | 1008.6 | 1007.5 | |
| 1001.4 | 1008.8 | 1006.4 | 1013.1 | 1007.5 | 1007.1 | 1002.2 | 1003.4 | 1010.7 | 1011.2 | 1011.6 | 1008.8 | 1007.7 | |
| 1007.3 | 1010.7 | 1009.5 | 1008.9 | 1002.1 | 1002.1 | 1005.7 | 1003.5 | 1008.0 | 1011.0 | 1012.0 | 1008.2 | 1007.4 | |
| 1008.1 | 1006.5 | 1005.9 | 1012.5 | 1007.0 | 1006.1 | 1003.9 | 1006.9 | 1007.6 | 1011.7 | 1009.7 | 1007.2 | 1007.8 | |
| 1008.1 | 1010.6 | 1007.0 | 1009.0 | 1006.5 | 1003.2 | 1001.3 | 1005.5 | 1008.4 | 1010.9 | 1011.7 | 1009.5 | 1007.6 | |
| 1014.4 | 1008.2 | 1009.4 | 1011.6 | 1003.9 | 1003.2 | 1004.1 | 1004.0 | 1007.3 | 1010.2 | 1008.4 | 1009.3 | 1007.8 | |
| 1011.8 | 1006.7 | 1007.4 | 1007.4 | 1006.1 | 1006.4 | 1005.6 | 1006.0 | 1007.6 | 1011.2 | 1006.2 | 1003.3 | 1007.1 | |
| 1005.8 | 1008.8 | 1011.0 | 1005.5 | 1007.2 | 1004.3 | 1005.8 | 1003.3 | 1007.7 | 1008.3 | 1010.6 | 1012.9 | 1007.6 | |
| 1006.7 | 1006.9 | 1007.9 | 1009.2 | 1006.6 | 1004.8 | 1003.5 | 1005.7 | 1008.4 | 1012.1 | 1014.9 | 1010.4 | 1008.1 | |
| 1003.9 | 1011.4 | 1009.4 | 1010.2 | 1005.6 | 1006.0 | 1006.3 | 1005.0 | 1008.9 | 1007.8 | 1010.8 | 1007.9 | 1007.8 | |
| 1009.0 | 1007.6 | 1012.1 | 1006.8 | 1006.2 | 1005.7 | 1004.1 | 1003.3 | 1008.5 | 1015.1 | 1014.1 | 1011.0 | 1008.6 | |
| 1004.4 | 1007.3 | 1006.3 | 1005.0 | 1006.3 | 1004.0 | 1005.2 | 1003.7 | 1008.7 | 1012.4 | 1012.1 | 1012.0 | 1007.3 | |
| 1009.3 | 1006.3 | 1007.6 | 1009.5 | 1006.0 | 1006.0 | 1003.3 | 1004.0 | 1009.9 | 1008.8 | 1013.9 | 1012.5 | 1008.1 | |
| 1005.8 | 1007.4 | 1008.8 | 1010.5 | 1005.5 | 1004.7 | 1004.8 | 1008.3 | 1008.6 | 1009.4 | 1010.3 | 1003.0 | 1007.3 | |
| 1004.5 | 1006.7 | 1009.4 | 1005.7 | 1005.5 | 1006.5 | 1005.4 | 1001.0 | 1008.1 | 1007.8 | 1011.0 | 1009.3 | 1006.7 | |
| 1007.9 | 1010.4 | 1009.4 | 1010.1 | 1005.0 | 1003.1 | 1006.1 | 1006.5 | 1008.2 | 1011.2 | 1011.4 | 1009.4 | 1008.2 | |
| 1009.6 | 1008.4 | 1011.1 | 1008.4 | 1006.0 | 1006.3 | 1003.5 | 1005.5 | 1009.1 | 1009.4 | 1009.2 | 1006.4 | 1007.7 | |
| 1007.2 | 1007.4 | 1008.3 | 1015.4 | 1010.0 | 1006.5 | 1004.0 | 1005.9 | 1007.9 | 1009.9 | 1013.3 | 1009.8 | 1008.8 | |
| 1008.9 | 1005.6 | 1015.4 | 1010.6 | 1008.0 | 1007.4 | 1001.5 | 1006.2 | 1008.7 | 1009.6 | 1006.1 | 1008.0 | 1008.0 | |
| 1005.0 | 1007.2 | 1007.9 | 1007.7 | 1002.7 | 1004.7 | 1005.1 | 1004.1 | 1006.0 | 1010.5 | 1010.5 | 1009.1 | 1006.7 | |
| 1006.8 | 1006.1 | 1005.7 | 1007.8 | 1006.2 | 1004.4 | 1001.0 | 1004.6 | 1009.5 | 1010.3 | 1011.2 | 1010.2 | 1007.0 | |
| 1006.1 | 1008.4 | 1009.1 | 1008.6 | 1004.6 | 1003.1 | 1006.5 | 1005.1 | 1008.7 | 1005.8 | 1005.2 | 1006.9 | 1006.5 | |
| 1012.6 | 1011.0 | 1007.8 | 1005.3 | 1004.9 | 1006.2 | 1008.2 | 1003.1 | 1006.2 | 1010.1 | 1011.6 | 1008.1 | 1007.9 | |
| 1010.3 | 1017.2 | 1008.6 | 1006.1 | 1005.9 | 1003.5 | 1004.0 | 1002.9 | 1009.2 | 1011.6 | 1011.3 | 1007.0 | 1008.1 | |
| 1005.9 | 1005.9 | 1011.0 | 1009.2 | 1005.5 | 1002.2 | 1001.7 | 1004.2 | 1007.6 | 1007.9 | 1011.8 | 1011.7 | 1007.1 | |
| 1009.3 | 1005.1 | 1013.5 | 1004.3 | 1004.5 | 1005.6 | 1001.4 | 1007.3 | 1006.3 | 1011.0 | 1012.2 | 1008.9 | 1007.5 | |
| 1009.8 | 1004.6 | 1008.0 | 1004.1 | 1005.7 | 1002.9 | 1006.0 | 1004.5 | 1007.8 | 1009.4 | 1013.1 | 1008.6 | 1007.0 | |
| 1008.4 | 1000.0 | 1009.0 | 1006.1 | 1003.1 | 1004.2 | 1002.4 | 1006.7 | 1004.9 | 1011.5 | 1015.3 | 1010.0 | 1006.8 | |
| 1005.5 | 1009.1 | 1010.2 | 1005.4 | 1006.0 | 1005.1 | 1002.0 | 1004.3 | 1004.6 | 1009.9 | 1002.5 | 1005.2 | 1005.8 | |
| 1004.5 | 1007.6 | 1006.1 | 1005.9 | 1005.9 | 1003.5 | 1004.1 | 1006.1 | 1007.4 | 1010.3 | 1009.5 | 1008.5 | 1006.6 | |
| 1003.4 | 1006.2 | 1009.0 | 1006.5 | 1003.6 | 1004.0 | 1001.9 | 1004.1 | 1007.3 | 1006.4 | 1012.0 | 1011.7 | 1006.3 | |
| 1009.4 | 1011.9 | 1007.2 | 1010.3 | 1007.7 | 1006.5 | 1003.7 | 1004.1 | 1007.6 | 1010.7 | 1007.8 | 1010.5 | 1008.1 | |
| 1004.5 | 1005.4 | 1009.1 | 1008.3 | 1003.8 | 1003.7 | 1004.0 | 1005.6 | 1007.5 | 1010.7 | 1009.8 | 1008.2 | 1006.7 | |
| 1011.3 | 1004.1 | 1003.1 | 1003.4 | 1006.2 | 1002.8 | 1001.7 | 1006.3 | 1006.5 | 1010.4 | 1013.4 | 1007.8 | 1006.4 | |
| 1006.5 | 1009.2 | 1002.3 | 1006.9 | 1005.7 | 1002.0 | 1003.1 | 1006.3 | 1008.8 | 1011.4 | 1008.1 | 1009.9 | 1006.7 | |
| 1004.5 | 1008.7 | 1004.5 | 1009.3 | 1006.9 | 1003.8 | 1002.5 | 1004.5 | 1009.0 | 1007.7 | 1005.8 | 1011.8 | 1006.6 | |
| 1005.3 | 1010.9 | 1009.2 | 1007.5 | 1009.8 | 1003.0 | 1006.7 | 1005.3 | 1008.0 | 1008.8 | 1014.1 | 1005.3 | 1007.8 | |
| 1005.7 | 1003.6 | 1008.1 | 1003.5 | 1004.9 | 1004.2 | 1002.5 | 1003.5 | 1009.9 | 1012.2 | 1010.5 | 1010.0 | 1006.6 | |
| 1003.7 | 1007.5 | 1004.3 | 1005.9 | 1005.3 | 1002.2 | 1002.7 | 1004.0 | 1010.3 | 1010.4 | 1006.9 | 1002.4 | 1005.5 | |
| 1008.1 | 1011.1 | 1001.7 | 1004.5 | 1007.4 | 1004.9 | 1003.4 | 1004.4 | 1008.9 | 1011.3 | 1008.7 | 1011.9 | 1007.2 | |
| 1011.1 | 1007.9 | 1006.5 | 1007.7 | 1000.9 | 1004.0 | 1001.9 | 1004.4 | 1007.8 | 1010.6 | 1009.8 | 1008.0 | 1006.7 | |
| 1009.4 | 1006.5 | 1009.6 | 1009.3 | 1006.4 | 1005.4 | 1003.7 | 1004.6 | 1006.1 | 1010.7 | 1008.4 | 1007.9 | 1007.3 | |
| 1009.7 | 1006.5 | 1006.9 | 1006.6 | 1004.9 | 1002.4 | 1000.8 | 1004.7 | 1007.6 | 1007.7 | 1012.5 | 1006.5 | 1006.4 | |
| 1004.1 | 1009.8 | 1009.6 | 1010.6 | 1005.7 | 1005.4 | 1003.2 | 1006.6 | 1006.9 | 1011.8 | 1007.9 | 1001.5 | 1006.9 | |
| 1003.7 | 1010.3 | 1005.9 | 1005.2 | 1005.4 | 1002.5 ) | 1003.5 | 1004.9 | 1006.7 | 1010.2 | 1011.6 | 1008.3 | 1006.5 | |
| 1008.9 | 1007.8 | 1007.9 | 1007.7 | 1005.3 | 1005.9 | 1002.8 | 1006.6 | 1009.3 | 1008.4 | 1005.0 | 1006.5 | 1006.8 | |
| 1008.9 | 1008.0 | 1004.4 | 1002.4 | 1005.9 | 1005.1 | 1003.4 | 1000.2 | 1009.2 | 1012.2 | 1006.1 | 1004.1 | 1005.8 | |
| 1008.2 | 1012.8 | 1006.9 | 1008.0 | 1003.0 | 1003.2 | 1002.6 | 1004.4 | 1006.6 | 1011.2 | 1010.3 | 1003.5 | 1006.7 | |
| 1006.1 | 1006.9 | 1007.5 | 1009.9 | 1002.2 | 1003.2 | 1002.7 | 1005.6 | 1007.7 | 1007.0 | 1015.4 | 1010.5 | 1007.1 | |
| 1007.9 | 1010.0 | 1011.1 | 1006.4 | 1006.3 | 1003.5 | 1004.5 | 1001.1 | 1008.8 | 1009.5 | 1011.3 | 1008.7 | 1007.4 | |
| 1006.9 | 1005.0 | 1007.2 | 1004.2 | 1005.6 | 1002.0 | 1002.3 | 1003.9 | 1005.0 | 1012.8 | 1008.0 | 1006.3 | 1005.8 | |
| 1004.2 | 1007.9 | 1009.4 | 1007.0 | 1005.0 | 1003.2 | 1005.0 | 1003.6 | 1008.1 | 1008.9 | 1013.1 | 1009.9 | 1007.1 | |
| 1006.9 | 1009.9 | 1005.3 | 1005.4 | 1005.2 | 1003.0 | 1004.8 | 1003.3 | 1009.1 | 1011.5 | 1010.4 | 1011.2 | 1007.2 | |
| 1010.6 | 1011.2 | 1006.3 | 1006.1 | 1004.7 | 1001.8 | 1004.3 | 1004.8 | 1009.0 | 1010.2 | 1011.0 | 1007.9 | 1007.3 | |
| 1008.5 | 1004.3 | 1010.3 | 1010.5 | 1002.3 | 1004.9 | 1006.6 | 1005.4 | 1010.2 | 1012.2 | 1007.9 | 1007.0 | 1007.5 | |
| 1006.0 | 1007.2 | 1007.4 | 1009.6 | 1005.3 | 1004.0 | 1003.6 | 1001.8 | 1009.1 | 1013.1 | 1011.1 | 1005.9 | 1007.0 | |
| 1007.6 | 1011.9 | 1012.7 | 1005.6 | 1007.4 | 1002.6 | 1002.7 | 1004.3 | 1007.4 | 1006.7 | 1007.8 | 1010.9 | 1007.3 | |
| 1008.6 | 1014.3 | 1006.5 | 1010.1 ) | 1009.9 ] |
- 値欄の記号の説明
- 赤線は、観測場所を移転した場合、観測装置を変更した場合または観測の時間間隔を変更した場合に、その前後のデータが均質でないことを示します。
- 最新の月のデータは稀に更新されない場合があります。年の数字をクリックして表示される「月ごとの値」もご確認ください。