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:
18°C
64.4°F
°C °F

Condition: Overcast

Pressure: 945 hPa

Feel like: 19 °C

Temperature: 18°C

Cloud: 83%

Humidity: 96%

Wind: W - 9 km/h

Visibility: 8.54 km

Weather forecast

Sun
21 Jun
16°C / 20°C
Overcast
Mon
22 Jun
15°C / 21°C
Overcast
Tue
23 Jun
16°C / 19°C
Slight Thunderstorm
Wed
24 Jun
17°C / 21°C
Thunderstorm With Slight
Thu
25 Jun
15°C / 22°C
Moderate Rain Showers
Hourly forecast today:
19:00 PM
17° / 18°
17° / 18°
Overcast
96% 39 km/h
20:00 PM
17° / 18°
17° / 18°
Drizzle
97% 39 km/h
21:00 PM
18° / 18°
18° / 18°
Drizzle
97% 38 km/h
22:00 PM
17° / 18°
17° / 18°
Drizzle
96% 40 km/h
23:00 PM
18° / 18°
18° / 18°
Drizzle
97% 40 km/h
00:00 AM
18° / 18°
18° / 18°
Drizzle
96% 43 km/h
01:00 AM
17° / 19°
17° / 19°
Drizzle
91% 52 km/h
02:00 AM
16° / 20°
16° / 20°
Partly Cloudy
80% 54 km/h
03:00 AM
16° / 20°
16° / 20°
Partly Cloudy
79% 54 km/h
04:00 AM
16° / 19°
16° / 19°
Partly Cloudy
81% 57 km/h
05:00 AM
16° / 18°
16° / 18°
Overcast
85% 56 km/h

30 Day Averages and Extremes

  • Average high 22.47°C
  • Average low 16.47°C
  • Hottest day 30°C (04 July 2026)
  • Coldest day 12°C (09 June 2026)
  • Average humidity 86.0%
  • Days with precipitation 25 days
  • Highest precipitation 93 mm (19 June 2026)

Yesterday's Data

  • Max: 22°C
  • Min: 20°C
  • Total Precipitation: 47 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 17ºC to 20ºC (62.6ºF to 68.0ºF), you might consider wearing:
- Comfortable sandals or sneakers
- Sunglasses
- Cotton or linen fabrics
- Sun hat or cap

Temperature

Early
19°C / 20°C
Morning
21°C / 21°C
Afternoon
18°C / 19°C
Evening
18°C / 18°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 453
  • CO 126
  • NH3 0
  • NO2 3
  • O3 114
  • PM10 8
  • PM25 6
  • SO2 2
  • CH4 1,396

Sunrise / Sunset

20:02
10:29