Climate averages 1991–2020
Tsubame weather
in July.
A warm, very wet month: the 2nd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Tsubame: daytime highs average 27.2°C and nights cool to about 20.9°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 214 mm of rain on roughly 16 days, which makes July a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 29 min on an average July day.
The nearest other city in this atlas is Sanjō (6 km away). In July its highs average 27.8°C, 0.6°C warmer than Tsubame, with 244 mm of rain.
Among the 303 cities listed in Japan, Tsubame ranks joint 228th of 303 for the warmest July highs and joint 171st of 303 for the driest July (rainfall, lowest first). The mean July high of those 303 cities is 27.9°C; Tsubame is 0.7°C cooler than that mean.
From July to August, average highs rise by 1.7°C to 28.8°C, and monthly rainfall falls from 214 mm to 149 mm.
The annual picture
July 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
Tsubame climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.0°C-0.9°C | -0.9°C | 172 | 24.8 | 9.910 h |
| February | 4.7°C-1.4°C | -1.4°C | 118 | 20.1 | 10.811 h |
| March | 8.9°C1.0°C | 1.0°C | 121 | 19.3 | 11.912 h |
| April | 14.8°C5.5°C | 5.5°C | 91 | 13.8 | 13.113 h |
| May | 20.3°C11.0°C | 11.0°C | 96 | 12.0 | 14.214 h |
| June | 23.9°C16.2°C | 16.2°C | 117 | 12.1 | 14.715 h |
| July, selected | 27.2°C20.9°C | 20.9°C | 214 | 15.8 | 14.514 h |
| August | 28.8°C22.3°C | 22.3°C | 149 | 13.7 | 13.614 h |
| September | 25.0°C18.6°C | 18.6°C | 139 | 14.3 | 12.512 h |
| October | 19.2°C12.4°C | 12.4°C | 146 | 14.6 | 11.311 h |
| November | 13.3°C6.6°C | 6.6°C | 156 | 18.6 | 10.210 h |
| December | 7.3°C1.7°C | 1.7°C | 182 | 23.3 | 9.610 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
July in nearby cities
- Sanjō in JulyJapan · 6 kmHigh 27.8°C · Low 20.4°C · 244 mm rain
- Nagaoka in JulyJapan · 25 kmHigh 28.1°C · Low 20.4°C · 207 mm rain
- Niigata in JulyJapan · 30 kmHigh 26.6°C · Low 21.2°C · 226 mm rain
- Kashiwazaki in JulyJapan · 47 kmHigh 28.0°C · Low 20.7°C · 212 mm rain
- Shibata in JulyJapan · 48 kmHigh 27.1°C · Low 20.4°C · 274 mm rain
- Jōetsu in JulyJapan · 84 kmHigh 27.8°C · Low 20.9°C · 191 mm rain
- Aizu-Wakamatsu in JulyJapan · 92 kmHigh 26.6°C · Low 19.3°C · 180 mm rain
- Yonezawa in JulyJapan · 108 kmHigh 26.6°C · Low 19.4°C · 241 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 Tsubame) is explained once on the Tsubame year overview and on the Sources, method and limits page.