Yamaguchi, Japan Weather

  1. Yamaguchi, Japan Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Yamaguchi over the next 12 hours
  7. Temperature and possibility of rain in Yamaguchi in the coming days
  8. Rainfall in Yamaguchi in the coming days
  9. Yamaguchi Weather Summary
  10. Weather averages by month
  11. Yamaguchi's weather
  12. Frequently asked questions
  13. Comments
Yamaguchi, Weather
(Photo by Sora Sagano on Unsplash)

Current conditions

Updated:
30°C
86.0°F
°C °F

Condition: Mainly Clear

Pressure: 948 hPa

Feel like: 35 °C

Temperature: 30°C

Cloud: 22%

Humidity: 70%

Wind: N - 4 km/h

Visibility: 7.92 km

Weather forecast

Thu
06 Aug
23°C / 30°C
Slight Thunderstorm
Fri
07 Aug
22°C / 30°C
Slight Thunderstorm
Sat
08 Aug
20°C / 29°C
Drizzle
Sun
09 Aug
20°C / 28°C
Overcast
Mon
10 Aug
21°C / 26°C
Drizzle
Hourly forecast today:
07:00 AM
24° / 30°
24° / 30°
Mainly Clear
70% 24 km/h
08:00 AM
23° / 28°
23° / 28°
Mainly Clear
74% 22 km/h
09:00 AM
23° / 27°
23° / 27°
Mainly Clear
80% 21 km/h
10:00 AM
22° / 26°
22° / 26°
Clear Sky
82% 19 km/h
11:00 AM
23° / 25°
23° / 25°
Clear Sky
88% 14 km/h
12:00 PM
23° / 24°
23° / 24°
Clear Sky
92% 12 km/h
13:00 PM
22° / 23°
22° / 23°
Clear Sky
94% 12 km/h
14:00 PM
22° / 23°
22° / 23°
Clear Sky
92% 12 km/h
15:00 PM
21° / 23°
21° / 23°
Clear Sky
88% 12 km/h
16:00 PM
20° / 24°
20° / 24°
Clear Sky
77% 11 km/h
17:00 PM
19° / 24°
19° / 24°
Clear Sky
74% 11 km/h

30 Day Averages and Extremes

  • Average high 29.97°C
  • Average low 21.67°C
  • Hottest day 35°C (05 August 2026)
  • Coldest day 20°C (25 July 2026)
  • Average humidity 80.6%
  • Days with precipitation 25 days
  • Highest precipitation 53 mm (10 August 2026)

Yesterday's Data

  • Max: 30°C
  • Min: 23°C
  • Total Precipitation: 0 mm

Temperature and possibility of rain in Yamaguchi over the next 12 hours

Temperature and possibility of rain in Yamaguchi in the coming days

Rainfall in Yamaguchi in the coming days

Yamaguchi Climate Summary

Yamaguchi features a Humid subtropical, no dry season (Köppen classification: Cfa), with an average annual temperature of 16.33ºC (61.39ºF), which is about 1.14% higher than the national average for Japan. Annually, the city experiences approximately 85.81 millimeters (3.38 inches) of rainfall, spread across 106.38 rainy days, accounting for 29.15% of the year.

Longitude 34.2796769
Latitude 131.5212742
Yearly high temperature 18.64ºC (65.55ºF)
Yearly low temperature 12.31ºC (54.16ºF)
Hottest month August 30.11ºC (86.2ºF)
Coldest month January 2.87ºC (37.17ºF)
Yearly precip 85.81mm (3.38in)
Days with rainfall 106.38 days (29.15%)
Driest month November (75.07%)
Wettest month July (84.99%)

Weather averages by month

Month High / Low (°C) Rain
January 7.83° / 2.87° 5.82 days
February 8.95° / 3.05° 8.09 days
March 12.38° / 5.52° 8.64 days
April 16.73° / 9.43° 8.64 days
May 21.76° / 13.85° 8.27 days
June 24.57° / 17.95° 12.27 days
July 28.2° / 22.18° 13.64 days
August 30.11° / 23.55° 11.18 days
September 26.24° / 19.82° 9.82 days
October 21.27° / 14.68° 6.73 days
November 15.84° / 9.9° 5.64 days
December 9.77° / 4.91° 7.64 days

Yamaguchi's weather

Frequently asked questions

1. What is the hottest month in Yamaguchi?

August has the highest average monthly temperature (daily mean of 30.11ºC) and January are the coolest (daily mean of 2.87ºC).

2. What should I wear in Yamaguchi today?

For today's very hot weather in Yamaguchi, with the high temperatures above 35ºC (95.0ºF), consider wearing:
- Light, natural fabrics (like cotton or linen)
- Broad-brimmed sun hat
- UV-blocking sunglasses
- Lightweight, loose-fitting shorts

Temperature

Early
22°C / 30°C
Morning
23°C / 27°C
Afternoon
21°C / 23°C
Evening
20°C / 24°C

Air quality

Moderate

Acceptable air quality, some pollutants present, minor health concerns for sensitive individuals

  • CO2 449
  • CO 188
  • NH3 0
  • NO2 2
  • O3 146
  • PM10 12
  • PM25 11
  • SO2 4
  • CH4 1,531

Sunrise / Sunset

20:28
10:11