Climate averages 1991–2020
Ishinomaki weather
in August.
A warm, wet month: the warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Ishinomaki: daytime highs average 25.6°C and nights cool to about 21.8°C. By daytime temperature it is the warmest month of the year.
Expect about 131 mm of rain on roughly 12 days, which makes August a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 39 min on an average August day.
The nearest other city in this atlas is Ōsaki (34 km away). In August its highs average 27.2°C, 1.6°C warmer than Ishinomaki, with 165 mm of rain.
Among the 303 cities listed in Japan, Ishinomaki ranks 290th of 303 for the warmest August highs and joint 99th of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Ishinomaki is 3.6°C cooler than that mean.
From August to September, average highs fall by 2.5°C to 23.1°C, and monthly rainfall rises from 131 mm to 151 mm.
The annual picture
August 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
Ishinomaki climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.7°C0.0°C | 0.0°C | 52 | 7.7 | 9.810 h |
| February | 5.2°C-0.2°C | -0.2°C | 43 | 7.0 | 10.711 h |
| March | 8.1°C2.1°C | 2.1°C | 85 | 10.2 | 11.912 h |
| April | 12.7°C6.6°C | 6.6°C | 91 | 10.8 | 13.213 h |
| May | 17.0°C11.5°C | 11.5°C | 100 | 10.2 | 14.214 h |
| June | 20.2°C15.7°C | 15.7°C | 115 | 10.8 | 14.815 h |
| July | 23.7°C19.8°C | 19.8°C | 162 | 14.7 | 14.615 h |
| August, selected | 25.6°C21.8°C | 21.8°C | 131 | 12.3 | 13.714 h |
| September | 23.1°C19.2°C | 19.2°C | 151 | 12.6 | 12.512 h |
| October | 18.2°C13.6°C | 13.6°C | 140 | 9.9 | 11.211 h |
| November | 12.9°C7.6°C | 7.6°C | 64 | 7.7 | 10.110 h |
| December | 7.5°C2.6°C | 2.6°C | 56 | 8.8 | 9.510 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
August in nearby cities
- Ōsaki in AugustJapan · 34 kmHigh 27.2°C · Low 20.4°C · 165 mm rain
- Tome in AugustJapan · 35 kmHigh 27.1°C · Low 20.5°C · 135 mm rain
- Sendai in AugustJapan · 41 kmHigh 26.2°C · Low 21.0°C · 169 mm rain
- Natori-shi in AugustJapan · 46 kmHigh 26.0°C · Low 21.4°C · 162 mm rain
- Ichinoseki in AugustJapan · 57 kmHigh 26.9°C · Low 19.8°C · 142 mm rain
- Ōshū in AugustJapan · 81 kmHigh 27.0°C · Low 19.9°C · 153 mm rain
- Yamagata in AugustJapan · 84 kmHigh 26.9°C · Low 19.5°C · 146 mm rain
- Kitakami in AugustJapan · 98 kmHigh 26.4°C · Low 19.3°C · 162 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 Ishinomaki) is explained once on the Ishinomaki year overview and on the Sources, method and limits page.