Spring (March–May): Average 53–66°F, mild climate but with relatively high rainfall, especially in April and May. Common activities: Sightseeing, flower viewing (if local flowers are in bloom). Recommended clothing: Light jacket, long-sleeved shirt, and rain gear are essential.
Summer (June–August): Average 73–82°F, hot and humid with relatively high rainfall. July is the rainiest month. Common activities: Swimming, and other heat-escaping activities. Recommended clothing: Light and breathable clothing, short sleeves, and sun protection.
Autumn (September–November): Average 68–59°F, comfortable and pleasant climate with gradually decreasing rainfall. Common activities: Autumn scenery viewing, outdoor activities. Recommended clothing: Long-sleeved shirt, light jacket. Note the larger temperature difference between morning and evening.
Winter (December–February): Average 47–46°F, cold and dry with less rainfall. Common activities: Hot spring trips, indoor activities. Recommended clothing: Warm clothing, thick jacket, scarf, hat, etc.
Iwata climatological average
Annual average temperature: approx. 63.9°F / Annual rainfall: approx. 2344 mm / Summer humidity: 70%–80% / Rainiest month: July
Iwata monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
43.9°F
39.1
February
46.2°F
94.9
March
53.4°F
149.3
April
62.1°F
230.4
May
66.9°F
311.4
June
73.4°F
321.8
July
82.2°F
342.4
August
82.9°F
222.1
September
79.5°F
269.1
October
68°F
185.6
November
59.7°F
137
December
47.5°F
40.9
Iwata weather for the next seven days
10/12
Monday
Sunny
80°F/65°F
10/13
Tuesday
Sunny
77.3°F/65.1°F
10/14
Wednesday
Sunny
77.1°F/63.3°F
10/15
Thursday
Overcast
73.8°F/62.6°F
10/16
Friday
Overcast
74.7°F/60.3°F
10/17
Saturday
Sunny
75.5°F/59.7°F
10/18
Sunday
Overcast
73.6°F/60.2°F
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