旬ごとの値
 |  |
 |  |
 |  |  |  |  |
 |  |  |  |  |  |
 |  |  |  |  |
江差（檜山地方) 2018年（旬ごとの値） 詳細（気圧・降水量）
| 月 | 旬 | 気圧(hPa) | 降水量(mm) | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 現地 | 海面 | 合計 | 最大 | 各階級の日数 | ||||||||||||||||
| 平均 | 平均 | 最低 | 日 | 1時間 | 10分間 | ≧0.0mm | ≧0.5mm | ≧1.0mm | ≧10.0mm | ≧30.0mm | ≧50.0mm | ≧70.0mm | ≧100.0mm | |||||||
| 値 | 日 | 値 | 日 | 値 | 日 | 値 | 日 | |||||||||||||
| 上旬 | 1006.7 | 1008.2 | 984.3 | 09 | 46.0 | 13.5 | 09 | 4.0 | 09* | 1.5 | 04* | 10 | 7 | 6 | 2 | 0 | 0 | 0 | 0 | |
| 中旬 | 1016.0 | 1017.5 | 1006.2 | 11 | 42.5 | 19.0 | 12 | 6.0 | 12 | 1.5 | 13* | 10 | 7 | 6 | 2 | 0 | 0 | 0 | 0 | |
| 下旬 | 1008.1 | 1009.7 | 990.3 | 23 | 58.0 | 14.5 | 28 | 5.0 | 28 | 2.0 | 28* | 11 | 11 | 7 | 2 | 0 | 0 | 0 | 0 | |
| 上旬 | 1013.5 | 1015.1 | 1002.6 | 04 | 49.5 | 12.5 | 10* | 7.0 | 10 | 2.5 | 10 | 10 | 7 | 6 | 3 | 0 | 0 | 0 | 0 | |
| 中旬 | 1008.7 | 1010.2 | 996.7 | 17 | 41.5 | 13.0 | 17 | 3.5 | 17* | 1.5 | 17* | 10 | 9 | 8 | 2 | 0 | 0 | 0 | 0 | |
| 下旬 | 1019.9 | 1021.5 | 1013.8 | 23 | 4.5 | 2.5 | 23 | 1.0 | 24* | 1.0 | 23 | 8 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 1013.4 | 1014.9 | 971.4 | 01 | 86.0 | 39.5 | 01 | 6.5 | 09 | 1.5 | 09* | 10 | 7 | 6 | 2 | 1 | 0 | 0 | 0 | |
| 中旬 | 1017.0 | 1018.5 | 1006.7 | 15 | 6.5 | 3.5 | 16 | 1.5 | 16* | 1.0 | 16* | 6 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1014.6 | 1016.1 | 1005.3 | 22 | 0.0 | 0.0 | 25* | 0.0 | 25* | 0.0 | 25* | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 1012.1 | 1013.6 | 998.4 | 07 | 8.5 | 3.0 | 07 | 2.5 | 07 | 1.0 | 07 | 7 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | |
| 中旬 | 1012.4 | 1013.9 | 994.6 | 15 | 29.0 | 15.0 | 15 | 4.5 | 11 | 1.5 | 11 | 6 | 3 | 2 | 2 | 0 | 0 | 0 | 0 | |
| 下旬 | 1012.0 | 1013.5 | 1003.9 | 26 | 22.5 | 22.5 | 25 | 5.0 | 25 | 1.0 | 25 | 4 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | |
| 上旬 | 1010.7 | 1012.2 | 997.7 | 03 | 43.0 | 19.5 | 06 | 5.0 | 06 | 2.0 | 06 | 6 | 5 | 5 | 2 | 0 | 0 | 0 | 0 | |
| 中旬 | 1008.3 | 1009.7 | 999.9 | 17 | 73.0 | 35.5 | 18 | 7.0 | 17 | 2.5 | 17 | 7 | 6 | 6 | 4 | 1 | 0 | 0 | 0 | |
| 下旬 | 1009.8 | 1011.3 | 1000.3 | 25 | 23.0 | 12.0 | 25 | 3.5 | 25 | 1.5 | 25 | 6 | 5 | 3 | 1 | 0 | 0 | 0 | 0 | |
| 上旬 | 1011.0 | 1012.4 | 1003.2 | 09 | 12.5 | 12.5 | 08 | 9.0 | 08 | 4.5 | 08 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 1007.1 | 1008.6 | 997.9 | 12 | 68.0 | 59.5 | 12 | 9.0 | 12 | 2.0 | 12 | 5 | 4 | 4 | 1 | 1 | 1 | 0 | 0 | |
| 下旬 | 1004.3 | 1005.7 | 991.5 | 27 | 78.5 | 55.0 | 27 | 12.0 | 27 | 3.0 | 27 | 9 | 7 | 5 | 2 | 1 | 1 | 0 | 0 | |
| 上旬 | 1010.7 | 1012.2 | 991.8 | 05 | 179.0 | 47.5 | 04 | 14.0 | 04 | 6.0 | 04 | 10 | 9 | 7 | 5 | 2 | 0 | 0 | 0 | |
| 中旬 | 1009.3 | 1010.7 | 1006.6 | 13 | 35.0 | 12.0 | 17 | 5.5 | 17 | 1.5 | 17* | 7 | 5 | 5 | 1 | 0 | 0 | 0 | 0 | |
| 下旬 | 1006.9 | 1008.3 | 1003.8 | 31 | 1.5 | 1.0 | 23 | 1.0 | 23 | 0.5 | 23* | 5 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 1005.7 | 1007.1 | 1001.2 | 01 | 22.5 | 17.5 | 04 | 6.5 | 05* | 3.5 | 04 | 5 | 3 | 3 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 1008.8 | 1010.2 | 995.2 | 16 | 64.0 | 40.0 | 16 | 20.0 | 16 | 11.5 | 16 | 9 | 6 | 5 | 2 | 1 | 0 | 0 | 0 | |
| 下旬 | 1008.3 | 1009.7 | 1000.1 | 24 | 58.0 | 16.0 | 30 | 11.5 | 22 | 7.5 | 22 | 8 | 7 | 5 | 4 | 0 | 0 | 0 | 0 | |
| 上旬 | 1007.7 | 1009.1 | 978.7 | 05 | 38.0 | 10.0 | 07 | 7.0 | 05* | 2.5 | 04 | 8 | 8 | 7 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 1015.0 | 1016.4 | 1009.9 | 17 | 0.0 | 0.0 | 14* | 0.0 | 14* | 0.0 | 14* | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1014.0 | 1015.5 | 996.0 | 30 | 34.5 | 12.5 | 27 | 3.5 | 27 | 2.0 | 22 | 8 | 7 | 5 | 1 | 0 | 0 | 0 | 0 | |
| 上旬 | 1012.2 | 1013.6 | 980.7 | 01 | 70.0 | 24.5 | 01 | 12.0 | 07 | 5.0 | 02 | 9 | 7 | 7 | 3 | 0 | 0 | 0 | 0 | |
| 中旬 | 1016.8 | 1018.2 | 1012.5 | 16 | 15.5 | 8.5 | 12 | 3.5 | 12 | 1.5 | 12 | 6 | 4 | 3 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1012.1 | 1013.6 | 998.9 | 29 | 44.0 | 14.0 | 31 | 6.5 | 27 | 4.0 | 29 | 7 | 5 | 5 | 3 | 0 | 0 | 0 | 0 | |
| 上旬 | 1020.6 | 1022.1 | 1012.7 | 09 | 14.5 | 12.0 | 09 | 6.0 | 09 | 2.5 | 09 | 3 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 1016.8 | 1018.3 | 1011.7 | 19 | 23.5 | 5.5 | 19* | 3.0 | 19 | 1.5 | 13* | 7 | 7 | 6 | 0 | 0 | 0 | 0 | 0 | |
| 下旬 | 1017.7 | 1019.2 | 1009.6 | 22 | 35.0 | 8.5 | 21 | 4.0 | 22 | 1.5 | 22 | 10 | 9 | 8 | 0 | 0 | 0 | 0 | 0 | |
| 上旬 | 1018.8 | 1020.4 | 1005.0 | 04 | 38.0 | 15.5 | 04 | 5.5 | 04 | 1.5 | 04 | 8 | 7 | 6 | 1 | 0 | 0 | 0 | 0 | |
| 中旬 | 1015.3 | 1016.8 | 1005.0 | 17 | 57.5 | 21.5 | 16 | 6.5 | 16 | 2.5 | 16 | 10 | 10 | 9 | 1 | 0 | 0 | 0 | 0 | |
| 下旬 | 1014.4 | 1015.9 | 1003.4 | 27 | 24.5 | 4.5 | 28 | 1.5 | 30* | 1.0 | 26 | 11 | 10 | 9 | 0 | 0 | 0 | 0 | 0 | |