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Niihama
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Niihama Weather and climate
Data source：Meteostat
Update date：2025-09
Niihama year round climate
- Spring (March–May): Average 11.6–19.5°C, mild and comfortable climate, but with more rainfall. Common activities: Hiking, flower viewing. Recommended clothing: Light jacket, long-sleeved shirt.
- Summer (June–August): Average 23.6–29.3°C, hot and humid, with rainfall concentrated in June and July. Common activities: Swimming, summer resort travel. Recommended clothing: Light and breathable clothing, sunscreen.
- Autumn (September–November): Average 20.1–27.2°C, comfortable and pleasant climate, with less rainfall. Common activities: Hiking, autumn leaf viewing. Recommended clothing: Light jacket, long-sleeved shirt.
- Winter (December–February): Average 6.6–8.4°C, relatively low temperatures, low rainfall. Common activities: Indoor activities, hot spring trips. Recommended clothing: Warm jacket, sweater, scarf.
Niihama climatological average
Annual average temperature: approx. 17.8°C / Annual rainfall: approx. 1496 mm / Summer humidity: 70%–80% / Rainiest month: July
Niihama monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
6.6°C
45
February
7.3°C
64
March
11.6°C
122.7
April
16.3°C
173.3
May
19.5°C
200.7
June
23.6°C
246.3
July
28.3°C
292.7
August
29.3°C
103.7
September
27.2°C
53
October
20.1°C
69.3
November
15.1°C
101.3
December
8.4°C
24.3
Niihama weather for the next seven days
10/20
Monday
Moderate rain
21.4°C/16°C
10/21
Tuesday
Patchy rain nearby
18.5°C/14.5°C
10/22
Wednesday
Patchy rain nearby
17.5°C/14°C
10/23
Thursday
Patchy rain nearby
20.5°C/14.4°C
10/24
Friday
Patchy rain nearby
17.7°C/15.5°C
10/25
Saturday
Patchy rain nearby
17.7°C/14.9°C
10/26
Sunday
Patchy rain nearby
19.1°C/15.8°C
