Climate averages 1991–2020
Jōetsu weather
in June.
A warm, wet month: the 4th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Jōetsu: daytime highs average 24.4°C and nights cool to about 16.4°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 115 mm of rain on roughly 12 days, which makes June a wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 40 min on an average June day.
The nearest other city in this atlas is Kashiwazaki (37 km away). In June its highs average 24.8°C, about as warm as Jōetsu, with 126 mm of rain.
Among the 303 cities listed in Japan, Jōetsu ranks joint 181st of 303 for the warmest June highs and joint 19th of 303 for the driest June (rainfall, lowest first). The mean June high of those 303 cities is 24.4°C; Jōetsu is level with that mean.
From June to July, average highs rise by 3.4°C to 27.8°C, and monthly rainfall rises from 115 mm to 191 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
Jōetsu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.1°C-1.1°C | -1.1°C | 254 | 26.0 | 9.910 h |
| February | 4.6°C-1.3°C | -1.3°C | 179 | 21.4 | 10.811 h |
| March | 8.3°C0.6°C | 0.6°C | 145 | 19.6 | 11.912 h |
| April | 15.2°C5.4°C | 5.4°C | 97 | 13.4 | 13.113 h |
| May | 21.0°C11.5°C | 11.5°C | 92 | 11.6 | 14.114 h |
| June, selected | 24.4°C16.4°C | 16.4°C | 115 | 11.5 | 14.715 h |
| July | 27.8°C20.9°C | 20.9°C | 191 | 14.4 | 14.414 h |
| August | 29.3°C22.2°C | 22.2°C | 122 | 12.1 | 13.614 h |
| September | 25.2°C18.4°C | 18.4°C | 162 | 14.1 | 12.512 h |
| October | 19.6°C12.4°C | 12.4°C | 164 | 15.1 | 11.311 h |
| November | 13.7°C6.4°C | 6.4°C | 180 | 18.5 | 10.210 h |
| December | 7.4°C1.2°C | 1.2°C | 247 | 24.2 | 9.710 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
- Kashiwazaki in JuneJapan · 37 kmHigh 24.8°C · Low 16.1°C · 126 mm rain
- Nagano in JuneJapan · 56 kmHigh 23.7°C · Low 14.7°C · 178 mm rain
- Nagaoka in JuneJapan · 64 kmHigh 25.1°C · Low 15.7°C · 115 mm rain
- Sanjō in JuneJapan · 82 kmHigh 24.7°C · Low 15.8°C · 143 mm rain
- Ueda in JuneJapan · 83 kmHigh 24.1°C · Low 15.1°C · 168 mm rain
- Tsubame in JuneJapan · 84 kmHigh 23.9°C · Low 16.2°C · 117 mm rain
- Shibukawa in JuneJapan · 100 kmHigh 23.7°C · Low 16.2°C · 178 mm rain
- Azumino in JuneJapan · 101 kmHigh 23.9°C · Low 15.2°C · 224 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 Jōetsu) is explained once on the Jōetsu year overview and on the Sources, method and limits page.