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Iwakuni

City · Yamaguchi Prefecture, 🇯🇵 Japan
Population 128,401
Area 871 km²
Time zone Asia/Tokyo
Official website www.city.iwakuni.lg.jp
Iwakuni

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Climate & when to visit

Best time to visit: May, October

Select a month

Typical weather in January

Poor
  • 9° (feels like 5°) · extremes 0°–13°
  • 3° at night
  • 7 rainy days
  • 3 sunny days
  • 4 hours of sunshine per day
  • Dry air
  • Calm winds
  • 14°C · too cold to swim
  • UV index 2 · low

Typical weather in February

Poor
  • 10° (feels like 6°) · extremes -1°–15°
  • 3° at night
  • 9 rainy days
  • 5 sunny days
  • 4 hours of sunshine per day
  • Dry air
  • Calm winds
  • 12°C · too cold to swim
  • UV index 3 · moderate

Typical weather in March

Fair
  • 13° (feels like 11°) · extremes 2°–19°
  • 6° at night
  • 11 rainy days
  • 8 sunny days
  • 5 hours of sunshine per day
  • Dry air
  • Calm winds
  • 12°C · too cold to swim
  • UV index 4 · moderate

Typical weather in April

Good
  • 18° (feels like 16°) · extremes 5°–23°
  • 10° at night
  • 10 rainy days
  • 11 sunny days
  • 6 hours of sunshine per day
  • Dry air
  • Calm winds
  • 14°C · too cold to swim
  • UV index 5 · moderate

Typical weather in May

Great
  • 22° · extremes 11°–26°
  • 15° at night
  • 10 rainy days
  • 11 sunny days
  • 7 hours of sunshine per day
  • Comfortable humidity
  • Calm winds
  • 17°C · too cold to swim
  • UV index 6 · high

Typical weather in June

Good
  • 25° (feels like 28°) · extremes 16°–29°
  • 19° at night
  • 15 rainy days
  • 5 sunny days
  • 5 hours of sunshine per day
  • Muggy, humid air
  • Calm winds
  • 20°C · cool for a dip
  • UV index 6 · high

Typical weather in July

Fair
  • 29° (feels like 33°) · extremes 21°–33°
  • 24° at night
  • 16 rainy days
  • 5 sunny days
  • 6 hours of sunshine per day
  • Oppressive humidity
  • Calm winds
  • 24°C · cool for a dip
  • UV index 7 · high

Typical weather in August

Poor
  • 30° (feels like 35°) · extremes 22°–33°
  • 25° at night
  • 16 rainy days
  • 7 sunny days
  • 7 hours of sunshine per day
  • Oppressive humidity
  • Calm winds
  • 26°C · warm for swimming
  • UV index 7 · high

Typical weather in September

Good
  • 27° (feels like 29°) · extremes 17°–31°
  • 21° at night
  • 13 rainy days
  • 6 sunny days
  • 5 hours of sunshine per day
  • Muggy, humid air
  • Calm winds
  • 25°C · warm for swimming
  • UV index 6 · high

Typical weather in October

Great
  • 22° · extremes 11°–26°
  • 16° at night
  • 9 rainy days
  • 10 sunny days
  • 5 hours of sunshine per day
  • Comfortable humidity
  • Calm winds
  • 23°C · cool for a dip
  • UV index 4 · moderate

Typical weather in November

Good
  • 16° (feels like 15°) · extremes 6°–21°
  • 10° at night
  • 7 rainy days
  • 6 sunny days
  • 4 hours of sunshine per day
  • Dry air
  • Calm winds
  • 20°C · cool for a dip
  • UV index 3 · moderate

Typical weather in December

Fair
  • 11° (feels like 8°) · extremes 1°–16°
  • 5° at night
  • 7 rainy days
  • 3 sunny days
  • 3 hours of sunshine per day
  • Dry air
  • Calm winds
  • 16°C · too cold to swim
  • UV index 2 · low

Climate data: NASA POWER + Copernicus ERA5-Land and ERA5 · 1996–2025

Practical information

Currency
Japanese Yen JPY ¥ · Card payments · Commonly accepted
Emergency numbers
118
Electricity
Type A / Type B
100 V · 60 Hz
Languages
Japanese
Tap water
Safe to drink
Driving side
Left
Calling code
+81
Learn more

Tours & Activities

Kintai Bridge
Walk
Iwakuni Castle
Walk
吉香公園花菖蒲園

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