Climate
The prefecture has a sub-tropical climate. Winter is cloudy with a little snow, and summer is humid. The average annual temperature is 14.6 degrees Celsius. It rains almost every day in the rainy season, from June to mid-July. The highest average monthly temperature occurs in August with 26.3 degrees Celsius. The average annual precipitation is 1799 millimeters, higher than Tokyo's 1467 mm and Obihiro with 920 mm.
| Average Year （Month） |
Oki | Izumo (Coastal) | Izumo (Inland) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Okinoshima Saigo |
Okinoshima Saigo Cape |
Ama | Matsue Kashima |
Matsue | Hikawa | Izumo | Okuizumo Yokota |
Unnan Kakeya |
Iinan Akana |
||
| Average Temperature (℃) |
Warmest Month | 25.6 (Aug) |
25.8 (Aug) |
25.6 (Aug) |
26.3 (Aug) |
25.8 (Aug) |
24.0 (Aug) |
24.5 (Aug) |
23.4 (Aug) |
||
| Coldest Month | 3.9 (Feb) |
4.5 (Feb) |
4.4 (Feb) |
4.2 (Jan) |
4.5 (Feb) |
0.7 (Feb) |
2.3 (Feb) |
0.4 (Jan, Feb) |
|||
| Rainfall (mm) |
Heaviest Month | 211.6 (Sept) |
227.0 (July) |
218.0 (Sept) |
240.5 (July) |
236.2 (July) |
234.2 (July) |
257.1 (July) |
282.2 (July) |
||
| Driest Month | 110.4 (Oct) |
96.4 (Feb) |
104.7 (April) |
114.5 (April) |
96.3 (Feb) |
103.4 (April) |
120.7 (April) |
116.5 (Oct) |
|||
| Average Year （Month） |
Iwami (Coastal) | Iwami (Inland) | |||||||||
| Ōda | Hamada | Masuda | Masuda City Takatsu |
Kawamoto | Ōnan |
Hamada City Yasaka |
Tsuwano | Yoshika | Yoshika Muikaichi |
||
| Average Temperature (℃) |
Warmest Month | 26.5 (Aug) |
26.2 (Aug) |
26.8 (Aug) |
24.2 (Aug) |
23.9 (Aug) |
23.6 (Aug) |
25.7 (Aug) |
24.5 (Aug) |
||
| Coldest Month | 4.9 (Jan, Feb) |
5.8 (Feb) |
5.4 (Jan, Feb) |
2.7 (Jan) |
0.8 (Jan) |
1.5 (Jan) |
3.0 (Jan) |
1.9 (Jan) |
|||
| Rainfall (mm) |
Heaviest Month | 246.3 (July) |
257.7 (July) |
223.9 (June) |
260.2 (July) |
260.6 (July) |
340.0 (July) |
285.6 (July) |
337.4 (June) |
||
| Driest Month | 98.3 (Feb) |
90.9 (Feb) |
87.9 (Feb) |
112.5 (Feb) |
109.2 (Nov) |
130.4 (April) |
99.7 (Dec) |
76.8 (Dec) |
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Read more about this topic: Shimane Prefecture
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