Climate averages 1991–2020
Yamaguchi weather
in June.
A warm, very wet month: the 4th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Yamaguchi: daytime highs average 25.6°C and nights cool to about 17.9°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 248 mm of rain on roughly 14 days, which makes June a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 24 min on an average June day.
The nearest other city in this atlas is Hōfu (17 km away). In June its highs average 25.6°C, about as warm as Yamaguchi, with 260 mm of rain.
Among the 303 cities listed in Japan, Yamaguchi ranks joint 63rd of 303 for the warmest June highs and 241st of 303 for the driest June (rainfall, lowest first). The mean June high of those 303 cities is 24.4°C; Yamaguchi is 1.2°C warmer than that mean.
From June to July, average highs rise by 3.3°C to 28.8°C, and monthly rainfall rises from 248 mm to 283 mm.
The annual picture
June in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Yamaguchi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.7°C1.5°C | 1.5°C | 61 | 9.7 | 10.210 h |
| February | 9.0°C1.6°C | 1.6°C | 72 | 10.0 | 10.911 h |
| March | 12.7°C4.0°C | 4.0°C | 117 | 11.4 | 11.912 h |
| April | 17.9°C8.4°C | 8.4°C | 130 | 10.6 | 13.013 h |
| May | 22.4°C13.2°C | 13.2°C | 150 | 10.5 | 13.914 h |
| June, selected | 25.6°C17.9°C | 17.9°C | 248 | 14.3 | 14.414 h |
| July | 28.8°C22.3°C | 22.3°C | 283 | 16.3 | 14.214 h |
| August | 30.2°C23.4°C | 23.4°C | 167 | 14.2 | 13.413 h |
| September | 26.7°C19.6°C | 19.6°C | 178 | 12.4 | 12.412 h |
| October | 21.6°C13.7°C | 13.7°C | 97 | 8.1 | 11.411 h |
| November | 15.7°C8.3°C | 8.3°C | 78 | 8.2 | 10.410 h |
| December | 10.0°C3.6°C | 3.6°C | 64 | 9.7 | 9.910 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- Hōfu in JuneJapan · 17 kmHigh 25.6°C · Low 18.8°C · 260 mm rain
- Ube in JuneJapan · 33 kmHigh 24.6°C · Low 19.2°C · 269 mm rain
- Shūnan in JuneJapan · 35 kmHigh 23.6°C · Low 17.2°C · 264 mm rain
- Yukuhashi in JuneJapan · 67 kmHigh 25.7°C · Low 19.2°C · 278 mm rain
- Kitakyushu in JuneJapan · 68 kmHigh 24.9°C · Low 19.2°C · 258 mm rain
- Iwakuni in JuneJapan · 69 kmHigh 25.1°C · Low 19.1°C · 234 mm rain
- Nakatsu in JuneJapan · 70 kmHigh 26.3°C · Low 19.6°C · 282 mm rain
- Hatsukaichi in JuneJapan · 82 kmHigh 26.3°C · Low 19.1°C · 234 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Yamaguchi) is explained once on the Yamaguchi year overview and on the Sources, method and limits page.