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:
8°C
46.4°F
°C °F

Condition: Partly Cloudy

Pressure: 948 hPa

Feel like: 6 °C

Temperature: 8°C

Cloud: 70%

Humidity: 91%

Wind: N - 9 km/h

Visibility: 24.14 km

Weather forecast

Fri
24 Apr
7°C / 22°C
Partly Cloudy
Sat
25 Apr
10°C / 14°C
Slight Rain Showers
Sun
26 Apr
9°C / 20°C
Fog
Mon
27 Apr
10°C / 18°C
Overcast
Tue
28 Apr
10°C / 13°C
Slight Rain
Hourly forecast today:
13:00 PM
7° / 8°
7° / 8°
Partly Cloudy
91% 45 km/h
14:00 PM
6° / 8°
6° / 8°
Partly Cloudy
86% 48 km/h
15:00 PM
6° / 8°
6° / 8°
Partly Cloudy
84% 51 km/h
16:00 PM
6° / 8°
6° / 8°
Partly Cloudy
85% 52 km/h
17:00 PM
6° / 8°
6° / 8°
Mainly Clear
87% 54 km/h
18:00 PM
6° / 8°
6° / 8°
Mainly Clear
87% 56 km/h
19:00 PM
6° / 8°
6° / 8°
Mainly Clear
87% 56 km/h
20:00 PM
4° / 7°
4° / 7°
Partly Cloudy
81% 53 km/h
21:00 PM
3° / 8°
3° / 8°
Partly Cloudy
74% 48 km/h
22:00 PM
2° / 8°
2° / 8°
Mainly Clear
66% 47 km/h
23:00 PM
2° / 10°
2° / 10°
Partly Cloudy
59% 47 km/h

30 Day Averages and Extremes

  • Average high 17.53°C
  • Average low 9.4°C
  • Hottest day 22°C (24 April 2026)
  • Coldest day 7°C (08 April 2026)
  • Average humidity 76.43%
  • Days with precipitation 25 days
  • Highest precipitation 78 mm (22 April 2026)

Yesterday's Data

  • Max: 11°C
  • Min: 8°C
  • Total Precipitation: 42 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 mild weather in Yamaguchi, with temperatures between 16ºC to 19ºC (60.8ºF to 66.2ºF), consider wearing:
- Sun hat (if spending time outdoors)
- Long-sleeve shirt or blouse
- Light jacket (for cooler periods)
- Casual sneakers or loafers

Temperature

Early
11°C / 11°C
Morning
9°C / 10°C
Afternoon
6°C / 8°C
Evening
3°C / 8°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 453
  • CO 175
  • NH3 0
  • NO2 1
  • O3 112
  • PM10 7
  • PM25 6
  • SO2 1
  • CH4 1,425

Sunrise / Sunset

20:32
09:52