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
4/2
Thursday
Heavy rain
62.2°F/50.6°F
4/3
Friday
Sunny
64°F/46.8°F
4/4
Saturday
Heavy rain
58.8°F/53.3°F
4/5
Sunday
Moderate rain
72.8°F/59.8°F
4/6
Monday
Heavy rain
62.9°F/54.9°F
4/7
Tuesday
Overcast
66.9°F/55°F
4/8
Wednesday
Sunny
61.4°F/51°F
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