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Niihama

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Niihama Weather, Climate and Best Time to Visit

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

5/2
Saturday
Sunny
19.1°C/12.3°C
5/3
Sunday
Heavy rain
16.4°C/13.5°C
5/4
Monday
Patchy rain nearby
17.2°C/13.5°C
5/5
Tuesday
Partly Cloudy
17.5°C/13.1°C
5/6
Wednesday
Sunny
17.2°C/13.4°C
5/7
Thursday
Sunny
19.7°C/14.3°C
5/8
Friday
Sunny
19.5°C/14.2°C