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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

6/16
Tuesday
Patchy rain nearby
22.5°C/19.3°C
6/17
Wednesday
Partly Cloudy
22.5°C/20°C
6/18
Thursday
Patchy rain nearby
24.4°C/20.1°C
6/19
Friday
Patchy rain nearby
24.9°C/20.5°C
6/20
Saturday
Heavy rain
22.8°C/20.9°C
6/21
Sunday
Patchy rain nearby
26°C/22°C
6/22
Monday
Patchy rain nearby
23.7°C/20.3°C

Niihama Frequently Asked Questions and Useful Information for Travel

What is the best time to visit?

The best times to visit Niihama City are spring and autumn, when the weather is warm and the scenery is beautiful. Summer is great for beach activities and winter is great for light festivals.

What are the must-see attractions?

Must-see attractions in Niihama City include beaches, forests, hot spring areas, and historical monuments. Among them, the beach is a popular activity spot in summer, and the forest provides a variety of outdoor activity options.