Spring (March–May): Average 50–66°F, mild climate but with relatively high rainfall, especially in April. Common activities: Flower viewing, hiking, visiting Okayama Castle. Recommended clothing: Light jacket, long-sleeved shirt, rain gear.
Summer (June–August): Average 74–84°F, hot and humid with abundant rainfall. Common activities: Swimming at the beach, outdoor activities (note sun protection and heatstroke prevention). Recommended clothing: Light and breathable clothing, sun hat, sunscreen.
Autumn (September–November): Average 65–79°F, comfortable and pleasant climate with reduced rainfall. Common activities: Maple viewing, outdoor sports, enjoying local cuisine. Recommended clothing: Long-sleeved shirt, light jacket.
Winter (December–February): Average 40–43°F, cold and dry with low rainfall. Common activities: Hot spring experience, indoor activities. Recommended clothing: Warm coat, hat, scarf, gloves.
Okayama climatological average
Annual average temperature: approx. 62.6°F / Annual rainfall: approx. 1247 mm / Summer humidity: 70%–80% / Rainiest month: June
Okayama monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
40.8°F
19.3
February
42.1°F
51.5
March
50.7°F
106.1
April
60.6°F
138.4
May
66°F
172.5
June
74.1°F
181
July
82.8°F
169.7
August
84.7°F
167.3
September
79.9°F
76.3
October
65.5°F
74.2
November
55.8°F
69.7
December
43.9°F
21.5
Okayama weather for the next seven days
10/29
Wednesday
Sunny
63.1°F/48.6°F
10/30
Thursday
Sunny
65.8°F/49.2°F
10/31
Friday
Heavy rain
58.8°F/56.3°F
11/1
Saturday
Patchy rain nearby
67.6°F/56.3°F
11/2
Sunday
Sunny
65.2°F/50.9°F
11/3
Monday
Sunny
63.8°F/49.6°F
11/4
Tuesday
Partly Cloudy
65.2°F/52.3°F
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