Climate averages 1991–2020
Otaru weather
in October.
A cool, wet month: the 6th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a cool month in Otaru: daytime highs average 14.4°C and nights cool to about 9.0°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 117 mm of rain on roughly 15 days, which makes October a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 04 min on an average October day.
The nearest other city in this atlas is Sapporo (31 km away). In October its highs average 14.7°C, about as warm as Otaru, with 99 mm of rain.
Among the 303 cities listed in Japan, Otaru ranks joint 295th of 303 for the warmest October highs and joint 56th of 303 for the driest October (rainfall, lowest first). The mean October high of those 303 cities is 20.4°C; Otaru is 6.0°C cooler than that mean.
From October to November, average highs fall by 7.6°C to 6.8°C, and monthly rainfall rises from 117 mm to 129 mm.
The annual picture
October in context
Monthly precipitation
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
Otaru climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -2.3°C-5.8°C | -5.8°C | 98 | 20.8 | 9.49 h |
| February | -1.6°C-5.7°C | -5.7°C | 80 | 18.2 | 10.510 h |
| March | 1.8°C-3.0°C | -3.0°C | 76 | 15.0 | 11.912 h |
| April | 7.3°C1.4°C | 1.4°C | 66 | 11.2 | 13.413 h |
| May | 15.1°C7.0°C | 7.0°C | 84 | 11.7 | 14.615 h |
| June | 19.6°C12.2°C | 12.2°C | 76 | 10.6 | 15.315 h |
| July | 23.5°C17.0°C | 17.0°C | 127 | 12.8 | 15.015 h |
| August | 24.4°C18.8°C | 18.8°C | 163 | 14.1 | 14.014 h |
| September | 20.8°C15.3°C | 15.3°C | 149 | 13.9 | 12.513 h |
| October, selected | 14.4°C9.0°C | 9.0°C | 117 | 14.9 | 11.111 h |
| November | 6.8°C2.3°C | 2.3°C | 129 | 18.6 | 9.810 h |
| December | 0.3°C-2.7°C | -2.7°C | 125 | 21.9 | 9.19 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet 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
- Sapporo in OctoberJapan · 31 kmHigh 14.7°C · Low 8.0°C · 99 mm rain
- Ebetsu in OctoberJapan · 45 kmHigh 14.3°C · Low 6.7°C · 87 mm rain
- Eniwa in OctoberJapan · 57 kmHigh 14.3°C · Low 6.8°C · 87 mm rain
- Iwamizawa in OctoberJapan · 61 kmHigh 14.4°C · Low 6.3°C · 92 mm rain
- Chitose in OctoberJapan · 67 kmHigh 14.5°C · Low 7.6°C · 91 mm rain
- Tomakomai in OctoberJapan · 79 kmHigh 14.3°C · Low 8.8°C · 110 mm rain
- Muroran in OctoberJapan · 97 kmHigh 14.1°C · Low 8.9°C · 103 mm rain
- Asahikawa in OctoberJapan · 128 kmHigh 13.0°C · Low 4.6°C · 115 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 Otaru) is explained once on the Otaru year overview and on the Sources, method and limits page.