Spring (March–May): Average 14.1–19.9°C, mild and rainy climate. The cherry blossom season may be short, but there is still a chance to appreciate them. Common activities: flower viewing, hiking, visiting historical sites. Recommended clothing: light jacket, long-sleeved shirt, rain gear.
Summer (June–August): Average 23.0–27.6°C, hot and humid. June has the most rainfall. Be mindful of heatstroke and rain. Common activities: swimming at the beach, mountain climbing for summer escape. Recommended clothing: light and breathable clothing, sun hat, rain gear.
Autumn (September–November): Average 21.8–26.4°C, comfortable and pleasant climate with gradually decreasing rainfall. Common activities: maple leaf viewing, outdoor activities, enjoying local cuisine. Recommended clothing: light jacket, long-sleeved shirt.
Winter (December–February): Average 10.8–12.9°C, relatively low temperatures with occasional rainfall. Common activities: hot spring bathing, indoor activities. Recommended clothing: warm clothing, jacket, scarf.
Tosa climatological average
Annual average temperature: approx. 19°C / Annual rainfall: approx. 2871 mm / Summer humidity: 70%–80% / Rainiest month: June
Tosa monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
10.8°C
142.2
February
11.2°C
233.2
March
14.1°C
287.9
April
17.5°C
303.9
May
19.9°C
284.3
June
23°C
392.9
July
27°C
122
August
27.6°C
229.7
September
26.4°C
301.4
October
21.8°C
209
November
18.6°C
231.8
December
12.9°C
133
Tosa weather for the next seven days
12/18
Thursday
Patchy rain nearby
15.3°C/14.5°C
12/19
Friday
Patchy rain nearby
17.6°C/15°C
12/20
Saturday
Patchy rain nearby
19.7°C/17.9°C
12/21
Sunday
Moderate rain
20.4°C/18.6°C
12/22
Monday
Moderate rain
17.5°C/13.7°C
12/23
Tuesday
Moderate rain
14.5°C/12.3°C
12/24
Wednesday
Patchy rain nearby
16.4°C/15.3°C
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