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:
21°C
69.8°F
°C °F

Condition: Partly Cloudy

Pressure: 950 hPa

Feel like: 23 °C

Temperature: 21°C

Cloud: 79%

Humidity: 74%

Wind: NNE - 4 km/h

Visibility: 35.66 km

Weather forecast

Mon
07 Sep
19°C / 28°C
Slight Thunderstorm
Tue
08 Sep
17°C / 22°C
Slight Thunderstorm
Wed
09 Sep
18°C / 20°C
Slight Thunderstorm
Thu
10 Sep
18°C / 23°C
Slight Thunderstorm
Fri
11 Sep
18°C / 23°C
Drizzle
Hourly forecast today:
00:00 AM
17° / 21°
17° / 21°
Partly Cloudy
74% 25 km/h
01:00 AM
17° / 22°
17° / 22°
Partly Cloudy
73% 27 km/h
02:00 AM
18° / 23°
18° / 23°
Mainly Clear
73% 29 km/h
03:00 AM
18° / 24°
18° / 24°
Overcast
72% 33 km/h
04:00 AM
19° / 24°
19° / 24°
Overcast
73% 32 km/h
05:00 AM
19° / 23°
19° / 23°
Overcast
75% 16 km/h
06:00 AM
19° / 24°
19° / 24°
Overcast
75% 24 km/h
07:00 AM
19° / 22°
19° / 22°
Drizzle
84% 27 km/h
08:00 AM
19° / 22°
19° / 22°
Partly Cloudy
81% 30 km/h
09:00 AM
18° / 22°
18° / 22°
Partly Cloudy
80% 31 km/h
10:00 AM
20° / 21°
20° / 21°
Overcast
94% 28 km/h

30 Day Averages and Extremes

  • Average high 25.9°C
  • Average low 19.7°C
  • Hottest day 32°C (22 August 2026)
  • Coldest day 16°C (13 September 2026)
  • Average humidity 83.9%
  • Days with precipitation 25 days
  • Highest precipitation 74 mm (03 September 2026)

Yesterday's Data

  • Max: 24°C
  • Min: 19°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 warm weather in Yamaguchi, with temperatures between 20ºC to 23ºC (68.0ºF to 73.4ºF), you might consider wearing:
- Light, breathable socks
- Cotton or linen fabrics
- Sunglasses
- T-shirt or short-sleeve blouse

Temperature

Early
18°C / 24°C
Morning
18°C / 22°C
Afternoon
18°C / 20°C
Evening
18°C / 20°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 443
  • CO 139
  • NH3 0
  • NO2 2
  • O3 89
  • PM10 11
  • PM25 8
  • SO2 1
  • CH4 1,443

Sunrise / Sunset

20:51
09:32