Spring (March–May): 8.7–17.2°C on average, mild climate but with relatively high rainfall, especially frequent in April and May. Common activities: picnics, flower viewing (if applicable locally). Recommended clothing: light jacket, long-sleeved shirt, rain gear essential.
Summer (June–August): 21.4–27.0°C on average, hot and humid, abundant rainfall, with the most rainfall in July. Common activities: summer resort activities (if applicable), indoor activities. Recommended clothing: light and breathable clothing, sun hat, rain gear.
Autumn (September–November): 17.3–24.1°C on average, comfortable and pleasant climate, rainfall gradually decreases. Common activities: outdoor excursions, autumn scenery viewing. Recommended clothing: comfortable long-sleeved shirts or light jackets.
Winter (December–February): 3.5–5.2°C on average, cold and dry, less rainfall. Common activities: indoor activities, such as visiting museums or onsen. Recommended clothing: warm clothing, thick coat, scarf and gloves.
Niimi climatological average
Annual average temperature: approx. 14.5°C / Annual rainfall: approx. 1531 mm / Summer humidity: 70%–80% / Rainiest month: July
Niimi monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
3.5°C
30.8
February
4.1°C
58.8
March
8.7°C
114.6
April
14.1°C
149.1
May
17.2°C
213.9
June
21.4°C
211.2
July
26.1°C
219.5
August
27°C
197.1
September
24.1°C
153.5
October
17.3°C
75.2
November
12°C
74.8
December
5.2°C
32.8
Niimi weather for the next seven days
11/3
Monday
Patchy rain nearby
10.7°C/3.7°C
11/4
Tuesday
Sunny
12°C/2.1°C
11/5
Wednesday
Patchy rain nearby
15.4°C/4.2°C
11/6
Thursday
Moderate rain
14.8°C/9.2°C
11/7
Friday
Sunny
16.3°C/6.4°C
11/8
Saturday
Partly Cloudy
16.3°C/8.1°C
11/9
Sunday
Patchy rain nearby
14.3°C/12.2°C
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