Climate averages 1991–2020
Iizuka weather
in August.
A hot, 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 hot month in Iizuka: daytime highs average 31.3°C and nights cool to about 24.1°C. By daytime temperature it is the warmest month of the year.
Expect about 142 mm of rain on roughly 14 days, which makes August a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 24 min on an average August day.
The nearest other city in this atlas is Munakata (21 km away). In August its highs average 31.0°C, about as warm as Iizuka, with 155 mm of rain.
Among the 303 cities listed in Japan, Iizuka ranks joint 5th of 303 for the warmest August highs and joint 129th of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Iizuka is 2.1°C warmer than that mean.
From August to September, average highs fall by 3.8°C to 27.4°C, and monthly rainfall rises from 142 mm to 162 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
Iizuka climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.6°C1.8°C | 1.8°C | 59 | 9.1 | 10.210 h |
| February | 10.1°C2.1°C | 2.1°C | 67 | 9.0 | 11.011 h |
| March | 13.8°C4.7°C | 4.7°C | 108 | 11.2 | 12.012 h |
| April | 19.2°C9.2°C | 9.2°C | 120 | 10.6 | 13.013 h |
| May | 23.9°C14.2°C | 14.2°C | 133 | 10.3 | 13.914 h |
| June | 26.7°C19.0°C | 19.0°C | 258 | 14.8 | 14.314 h |
| July | 30.0°C23.2°C | 23.2°C | 238 | 15.7 | 14.214 h |
| August, selected | 31.3°C24.1°C | 24.1°C | 142 | 13.5 | 13.413 h |
| September | 27.4°C20.3°C | 20.3°C | 162 | 13.0 | 12.412 h |
| October | 22.2°C14.5°C | 14.5°C | 93 | 7.9 | 11.411 h |
| November | 16.6°C8.8°C | 8.8°C | 78 | 8.4 | 10.510 h |
| December | 10.9°C3.8°C | 3.8°C | 61 | 8.7 | 10.010 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
- Munakata in AugustJapan · 21 kmHigh 31.0°C · Low 24.7°C · 155 mm rain
- Kasuga in AugustJapan · 24 kmHigh 31.1°C · Low 24.0°C · 171 mm rain
- Fukuoka in AugustJapan · 25 kmHigh 30.7°C · Low 24.6°C · 171 mm rain
- Kitakyushu in AugustJapan · 28 kmHigh 29.9°C · Low 24.6°C · 142 mm rain
- Yukuhashi in AugustJapan · 29 kmHigh 30.5°C · Low 24.3°C · 132 mm rain
- Tosu in AugustJapan · 34 kmHigh 30.8°C · Low 23.6°C · 175 mm rain
- Kurume in AugustJapan · 39 kmHigh 30.8°C · Low 23.5°C · 175 mm rain
- Maebaru-chūō in AugustJapan · 46 kmHigh 29.7°C · Low 25.1°C · 163 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 Iizuka) is explained once on the Iizuka year overview and on the Sources, method and limits page.
Kitakyushu lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.