Yamaguchi weather
At 12:45 PM local time it was mostly clear and 19°C (66°F). Mostly light, on-and-off rain; heavier around 4 AM (8.0 mm total). Best months for weather: May, Oct–Nov. Yamaguchi sits 151 m (495 ft) above sea level, which keeps it cooler than the coast. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Yamaguchi, Yamaguchi, Japan.
Current conditions
- Clouds
- 25%
- Chance of rain
- 0%
- Rain
- 0.0 mm/h
Hourly Forecast
Mostly light, on-and-off rain; heavier around 4 AM (8.0 mm total)
Daily Forecast
Best Time to Visit
Peak season May, Oct–NovOff season Jun–Jul, Dec–Mar
About Yamaguchi weather
Is it raining in Yamaguchi right now?
No. It’s mostly clear and 19° right now. Mostly light, on-and-off rain; heavier around 4 AM (8.0 mm total).
What’s the weather like in Yamaguchi this week?
Over the next 7 days, expect highs of 13–20° and lows of 6–13°. Rain is likely on 2 of 7 days (Monday, Thursday). The driest day looks like Sunday.
Has it been raining in Yamaguchi lately?
In the past 7 days, Yamaguchi had 5 rainy days and 93.6 mm of rain in total.
What should I pack for Yamaguchi?
For the coming week, bring an umbrella or rain jacket and a warm layer for the evenings.
Yamaguchi weather by month
When is the best time to visit Yamaguchi?
Based on weather alone, the best time to visit Yamaguchi is May, Oct–Nov, according to NASA's 2001–2025 climate averages. Jun–Jul, Dec–Mar tends to be the least pleasant. Average highs run from 8°C (47°F) in January to 30°C (87°F) in August.
What is the rainiest month in Yamaguchi?
July is the wettest month, with about 330 mm (13.0 in) of rain on average. January is the driest, with about 76 mm (3.0 in).
What is the hottest month in Yamaguchi?
August is the warmest, with average highs of 30°C (87°F) and lows of 24°C (74°F). January is the coolest, with highs of 8°C (47°F) and lows of 2°C (36°F).
How warm is the sea in Yamaguchi?
The sea is warmest in August at about 30°C (86°F) and coolest in February at about 10°C (49°F). It is comfortable for swimming (22°C or more) in Jun–Oct.
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine, forecast and current conditions from Open-Meteo. Page updated . How we rate months