Climate averages 1991–2020
Katori-shi weather
in August.
A hot, wet month: the warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Katori-shi: daytime highs average 29.2°C and nights cool to about 23.5°C. By daytime temperature it is the warmest month of the year.
Expect about 103 mm of rain on roughly 11 days, which makes August a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 31 min on an average August day.
The nearest other city in this atlas is Kamisu (15 km away). In August its highs average 28.3°C, 0.9°C cooler than Katori-shi, with 90 mm of rain.
Among the 303 cities listed in Japan, Katori-shi ranks joint 182nd of 303 for the warmest August highs and joint 16th of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Katori-shi is level with that mean.
From August to September, average highs fall by 3.4°C to 25.8°C, and monthly rainfall rises from 103 mm to 171 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
Katori-shi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.5°C1.7°C | 1.7°C | 77 | 8.0 | 10.010 h |
| February | 9.2°C1.9°C | 1.9°C | 74 | 8.6 | 10.911 h |
| March | 12.4°C4.9°C | 4.9°C | 128 | 12.6 | 11.912 h |
| April | 17.1°C9.6°C | 9.6°C | 118 | 12.5 | 13.113 h |
| May | 21.3°C14.4°C | 14.4°C | 136 | 12.0 | 14.014 h |
| June | 24.0°C18.1°C | 18.1°C | 157 | 13.6 | 14.515 h |
| July | 27.7°C22.0°C | 22.0°C | 149 | 13.6 | 14.314 h |
| August, selected | 29.2°C23.5°C | 23.5°C | 103 | 10.7 | 13.514 h |
| September | 25.8°C20.8°C | 20.8°C | 171 | 13.8 | 12.412 h |
| October | 20.7°C15.6°C | 15.6°C | 213 | 13.0 | 11.311 h |
| November | 15.9°C10.0°C | 10.0°C | 107 | 10.7 | 10.310 h |
| December | 11.0°C4.5°C | 4.5°C | 73 | 9.2 | 9.810 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
- Kamisu in AugustJapan · 15 kmHigh 28.3°C · Low 23.7°C · 90 mm rain
- Narita in AugustJapan · 21 kmHigh 30.2°C · Low 23.3°C · 114 mm rain
- Ryūgasaki in AugustJapan · 28 kmHigh 30.0°C · Low 23.3°C · 119 mm rain
- Inzai in AugustJapan · 31 kmHigh 30.0°C · Low 23.3°C · 114 mm rain
- Sakura in AugustJapan · 31 kmHigh 29.8°C · Low 23.6°C · 114 mm rain
- Tsuchiura in AugustJapan · 34 kmHigh 29.9°C · Low 23.2°C · 119 mm rain
- Ushiku in AugustJapan · 34 kmHigh 30.0°C · Low 23.1°C · 119 mm rain
- Toride in AugustJapan · 37 kmHigh 30.0°C · Low 23.3°C · 123 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 Katori-shi) is explained once on the Katori-shi year overview and on the Sources, method and limits page.