Climate averages 1991–2020
Tsubame weather
in May.
A mild, wet month: the 5th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Tsubame: daytime highs average 20.3°C and nights cool to about 11.0°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 96 mm of rain on roughly 12 days, which makes May a wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 11 min on an average May day.
The nearest other city in this atlas is Sanjō (6 km away). In May its highs average 21.1°C, 0.8°C warmer than Tsubame, with 116 mm of rain.
Among the 303 cities listed in Japan, Tsubame ranks joint 245th of 303 for the warmest May highs and 15th of 303 for the driest May (rainfall, lowest first). The mean May high of those 303 cities is 21.3°C; Tsubame is 1.1°C cooler than that mean.
From May to June, average highs rise by 3.7°C to 23.9°C, and monthly rainfall rises from 96 mm to 117 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- Sanjō in MayJapan · 6 kmHigh 21.1°C · Low 10.6°C · 116 mm rain
- Nagaoka in MayJapan · 25 kmHigh 21.4°C · Low 10.6°C · 94 mm rain
- Niigata in MayJapan · 30 kmHigh 19.4°C · Low 11.4°C · 99 mm rain
- Kashiwazaki in MayJapan · 47 kmHigh 21.2°C · Low 11.1°C · 104 mm rain
- Shibata in MayJapan · 48 kmHigh 20.3°C · Low 10.5°C · 123 mm rain
- Jōetsu in MayJapan · 84 kmHigh 21.0°C · Low 11.5°C · 92 mm rain
- Aizu-Wakamatsu in MayJapan · 92 kmHigh 20.0°C · Low 9.8°C · 95 mm rain
- Yonezawa in MayJapan · 108 kmHigh 20.0°C · Low 9.8°C · 116 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.