Spring (March–May): Average 10.4–18.9°C, 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 23.4–29.3°C, 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 18.6–26.6°C, 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 4.9–6.6°C, 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. 17°C / Annual rainfall: approx. 1247 mm / Summer humidity: 70%–80% / Rainiest month: June
Okayama monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
4.9°C
19.3
February
5.6°C
51.5
March
10.4°C
106.1
April
15.9°C
138.4
May
18.9°C
172.5
June
23.4°C
181
July
28.2°C
169.7
August
29.3°C
167.3
September
26.6°C
76.3
October
18.6°C
74.2
November
13.2°C
69.7
December
6.6°C
21.5
Okayama weather for the next seven days
10/17
Friday
Sunny
25°C/18.5°C
10/18
Saturday
Patchy rain nearby
26.8°C/19.9°C
10/19
Sunday
Patchy rain nearby
20.5°C/17.9°C
10/20
Monday
Patchy rain nearby
22.5°C/17.5°C
10/21
Tuesday
Patchy rain nearby
19.4°C/16.4°C
10/22
Wednesday
Sunny
17.3°C/15°C
10/23
Thursday
Partly Cloudy
18.9°C/13.5°C
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