Climate averages 1991–2020
Iwaki weather
in October.
A mild, very wet month: the 6th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Iwaki: daytime highs average 19.6°C and nights cool to about 14.1°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 223 mm of rain on roughly 13 days, which makes October a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 16 min on an average October day.
The nearest other city in this atlas is Sukagawa (51 km away). In October its highs average 17.9°C, 1.7°C cooler than Iwaki, with 150 mm of rain.
Among the 303 cities listed in Japan, Iwaki ranks joint 234th of 303 for the warmest October highs and 269th of 303 for the driest October (rainfall, lowest first). The mean October high of those 303 cities is 20.4°C; Iwaki is 0.8°C cooler than that mean.
From October to November, average highs fall by 5.0°C to 14.6°C, and monthly rainfall falls from 223 mm to 111 mm.
The annual picture
October 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
Iwaki climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.9°C1.1°C | 1.1°C | 71 | 7.9 | 9.910 h |
| February | 7.4°C0.8°C | 0.8°C | 69 | 8.0 | 10.811 h |
| March | 10.7°C3.1°C | 3.1°C | 125 | 12.1 | 11.912 h |
| April | 15.5°C7.7°C | 7.7°C | 134 | 11.9 | 13.113 h |
| May | 19.8°C12.6°C | 12.6°C | 145 | 12.0 | 14.114 h |
| June | 22.6°C16.8°C | 16.8°C | 146 | 13.7 | 14.715 h |
| July | 26.0°C20.7°C | 20.7°C | 175 | 14.5 | 14.414 h |
| August | 27.5°C22.3°C | 22.3°C | 126 | 11.8 | 13.614 h |
| September | 24.5°C19.4°C | 19.4°C | 192 | 14.1 | 12.512 h |
| October, selected | 19.6°C14.1°C | 14.1°C | 223 | 13.4 | 11.311 h |
| November | 14.6°C8.3°C | 8.3°C | 111 | 9.8 | 10.210 h |
| December | 9.4°C3.5°C | 3.5°C | 73 | 8.6 | 9.710 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
October in nearby cities
- Sukagawa in OctoberJapan · 51 kmHigh 17.9°C · Low 10.5°C · 150 mm rain
- Hitachi in OctoberJapan · 54 kmHigh 19.8°C · Low 14.8°C · 211 mm rain
- Kōriyama in OctoberJapan · 59 kmHigh 17.9°C · Low 10.5°C · 136 mm rain
- Nasushiobara in OctoberJapan · 73 kmHigh 18.3°C · Low 10.8°C · 185 mm rain
- Ōtawara in OctoberJapan · 78 kmHigh 18.6°C · Low 10.8°C · 169 mm rain
- Hitachi-Naka in OctoberJapan · 79 kmHigh 19.8°C · Low 14.8°C · 196 mm rain
- Fukushima in OctoberJapan · 86 kmHigh 18.6°C · Low 10.4°C · 144 mm rain
- Mito in OctoberJapan · 87 kmHigh 20.1°C · Low 14.1°C · 212 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 Iwaki) is explained once on the Iwaki year overview and on the Sources, method and limits page.