Climate averages 1991–2020
Ōshū weather
in May.
A mild, wet month: the 5th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Ōshū: daytime highs average 19.3°C and nights cool to about 9.3°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 110 mm of rain on roughly 12 days, which makes May a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 18 min on an average May day.
The nearest other city in this atlas is Kitakami (17 km away). In May its highs average 18.7°C, 0.5°C cooler than Ōshū, with 114 mm of rain.
Among the 303 cities listed in Japan, Ōshū ranks joint 271st of 303 for the warmest May highs and 31st of 303 for the driest May (rainfall, lowest first). The mean May high of those 303 cities is 21.3°C; Ōshū is 2.1°C cooler than that mean.
From May to June, average highs rise by 3.3°C to 22.5°C, and monthly rainfall rises from 110 mm to 123 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
Ōshū climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.0°C-5.5°C | -5.5°C | 59 | 10.8 | 9.810 h |
| February | 3.0°C-5.4°C | -5.4°C | 53 | 10.2 | 10.711 h |
| March | 7.5°C-1.8°C | -1.8°C | 92 | 13.2 | 11.912 h |
| April | 14.1°C3.6°C | 3.6°C | 98 | 13.4 | 13.213 h |
| May, selected | 19.3°C9.3°C | 9.3°C | 110 | 12.4 | 14.314 h |
| June | 22.5°C14.1°C | 14.1°C | 123 | 12.9 | 14.915 h |
| July | 25.7°C18.6°C | 18.6°C | 166 | 16.4 | 14.615 h |
| August | 27.0°C19.9°C | 19.9°C | 153 | 15.2 | 13.714 h |
| September | 23.2°C16.1°C | 16.1°C | 151 | 13.5 | 12.512 h |
| October | 17.5°C9.3°C | 9.3°C | 120 | 11.2 | 11.211 h |
| November | 11.3°C3.0°C | 3.0°C | 73 | 11.7 | 10.110 h |
| December | 4.9°C-1.9°C | -1.9°C | 68 | 12.4 | 9.59 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
- Kitakami in MayJapan · 17 kmHigh 18.7°C · Low 8.6°C · 114 mm rain
- Ichinoseki in MayJapan · 25 kmHigh 19.3°C · Low 9.2°C · 104 mm rain
- Hanamaki in MayJapan · 28 kmHigh 18.7°C · Low 8.6°C · 109 mm rain
- Tome in MayJapan · 48 kmHigh 19.4°C · Low 10.0°C · 98 mm rain
- Yokote in MayJapan · 57 kmHigh 19.1°C · Low 8.9°C · 124 mm rain
- Morioka in MayJapan · 62 kmHigh 18.1°C · Low 8.2°C · 94 mm rain
- Ōsaki in MayJapan · 64 kmHigh 19.6°C · Low 9.8°C · 109 mm rain
- Daisen in MayJapan · 67 kmHigh 19.2°C · Low 8.9°C · 121 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 Ōshū) is explained once on the Ōshū year overview and on the Sources, method and limits page.