Spring (March–May): Average 57–67°F, 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 73–81°F, 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 71–79°F, 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 51–55°F, 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. 66.2°F / Annual rainfall: approx. 2871 mm / Summer humidity: 70%–80% / Rainiest month: June
Tosa monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
51.4°F
142.2
February
52.2°F
233.2
March
57.4°F
287.9
April
63.5°F
303.9
May
67.8°F
284.3
June
73.4°F
392.9
July
80.6°F
122
August
81.7°F
229.7
September
79.5°F
301.4
October
71.2°F
209
November
65.5°F
231.8
December
55.2°F
133
Tosa weather for the next seven days
6/17
Wednesday
Moderate rain
69.8°F/68.4°F
6/18
Thursday
Moderate rain
73.7°F/71.7°F
6/19
Friday
Sunny
75.4°F/72.8°F
6/20
Saturday
Heavy rain
74°F/72.5°F
6/21
Sunday
Heavy rain
76.3°F/71.2°F
6/22
Monday
Patchy rain nearby
72.5°F/70.6°F
6/23
Tuesday
Moderate rain
72.8°F/70.6°F
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