Climate averages 1991–2020
Ikoma weather
in August.
A hot, moderately wet month: the warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Ikoma: daytime highs average 30.8°C and nights cool to about 23.1°C. By daytime temperature it is the warmest month of the year.
Expect about 89 mm of rain on roughly 9 days, which makes August a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 27 min on an average August day.
The nearest other city in this atlas is Nara-shi (10 km away). In August its highs average 31.2°C, about as warm as Ikoma, with 89 mm of rain.
Among the 303 cities listed in Japan, Ikoma ranks joint 31st of 303 for the warmest August highs and joint 1st of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Ikoma is 1.6°C warmer than that mean.
From August to September, average highs fall by 4.0°C to 26.8°C, and monthly rainfall rises from 89 mm to 140 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
Ikoma climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.2°C-0.4°C | -0.4°C | 58 | 6.4 | 10.110 h |
| February | 8.3°C-0.3°C | -0.3°C | 64 | 7.8 | 10.911 h |
| March | 12.1°C2.4°C | 2.4°C | 107 | 10.9 | 11.912 h |
| April | 17.4°C7.4°C | 7.4°C | 112 | 10.4 | 13.013 h |
| May | 22.2°C12.6°C | 12.6°C | 129 | 10.1 | 14.014 h |
| June | 25.5°C17.5°C | 17.5°C | 180 | 12.3 | 14.414 h |
| July | 28.9°C21.9°C | 21.9°C | 161 | 13.6 | 14.214 h |
| August, selected | 30.8°C23.1°C | 23.1°C | 89 | 9.0 | 13.513 h |
| September | 26.8°C19.2°C | 19.2°C | 140 | 10.7 | 12.412 h |
| October | 20.8°C12.9°C | 12.9°C | 143 | 9.5 | 11.311 h |
| November | 15.2°C6.8°C | 6.8°C | 75 | 7.1 | 10.410 h |
| December | 9.7°C1.8°C | 1.8°C | 57 | 6.6 | 9.910 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
- Nara-shi in AugustJapan · 10 kmHigh 31.2°C · Low 23.6°C · 89 mm rain
- Yamatokōriyama in AugustJapan · 11 kmHigh 31.1°C · Low 23.6°C · 126 mm rain
- Higashiosaka in AugustJapan · 11 kmHigh 31.8°C · Low 24.2°C · 110 mm rain
- Yao in AugustJapan · 12 kmHigh 31.4°C · Low 23.9°C · 100 mm rain
- Katano in AugustJapan · 12 kmHigh 31.2°C · Low 23.5°C · 89 mm rain
- Hirakata in AugustJapan · 15 kmHigh 31.3°C · Low 23.9°C · 89 mm rain
- Kashiba in AugustJapan · 17 kmHigh 31.2°C · Low 23.3°C · 126 mm rain
- Osaka in AugustJapan · 18 kmHigh 31.5°C · Low 24.3°C · 110 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 Ikoma) is explained once on the Ikoma year overview and on the Sources, method and limits page.
Hirakata, Nara-shi and Katano lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.