Climate averages 1991–2020
Muroran weather
in October.
A cool, wet month: the 5th 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 Muroran: daytime highs average 14.1°C and nights cool to about 8.9°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 103 mm of rain on roughly 11 days, which makes October a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 06 min on an average October day.
The nearest other city in this atlas is Tomakomai (62 km away). In October its highs average 14.3°C, about as warm as Muroran, with 110 mm of rain.
Among the 303 cities listed in Japan, Muroran ranks joint 300th of 303 for the warmest October highs and joint 24th of 303 for the driest October (rainfall, lowest first). The mean October high of those 303 cities is 20.4°C; Muroran is 6.3°C cooler than that mean.
From October to November, average highs fall by 7.3°C to 6.7°C, and monthly rainfall falls from 103 mm to 80 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
Muroran climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -2.0°C-6.8°C | -6.8°C | 51 | 8.5 | 9.59 h |
| February | -1.4°C-6.3°C | -6.3°C | 44 | 7.4 | 10.511 h |
| March | 2.0°C-3.4°C | -3.4°C | 57 | 9.1 | 11.912 h |
| April | 7.5°C1.3°C | 1.3°C | 76 | 9.1 | 13.313 h |
| May | 13.2°C7.0°C | 7.0°C | 112 | 11.1 | 14.615 h |
| June | 17.4°C12.2°C | 12.2°C | 104 | 10.3 | 15.215 h |
| July | 21.3°C16.7°C | 16.7°C | 153 | 13.0 | 14.915 h |
| August | 23.0°C18.7°C | 18.7°C | 181 | 12.6 | 13.914 h |
| September | 20.2°C15.6°C | 15.6°C | 166 | 13.0 | 12.513 h |
| October, selected | 14.1°C8.9°C | 8.9°C | 103 | 10.9 | 11.111 h |
| November | 6.7°C1.9°C | 1.9°C | 80 | 11.0 | 9.810 h |
| December | 0.3°C-4.2°C | -4.2°C | 69 | 11.0 | 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
- Tomakomai in OctoberJapan · 62 kmHigh 14.3°C · Low 8.8°C · 110 mm rain
- Hakodate in OctoberJapan · 64 kmHigh 15.3°C · Low 10.4°C · 114 mm rain
- Chitose in OctoberJapan · 78 kmHigh 14.5°C · Low 7.6°C · 91 mm rain
- Eniwa in OctoberJapan · 80 kmHigh 14.3°C · Low 6.8°C · 87 mm rain
- Sapporo in OctoberJapan · 88 kmHigh 14.7°C · Low 8.0°C · 99 mm rain
- Otaru in OctoberJapan · 97 kmHigh 14.4°C · Low 9.0°C · 117 mm rain
- Ebetsu in OctoberJapan · 99 kmHigh 14.3°C · Low 6.7°C · 87 mm rain
- Iwamizawa in OctoberJapan · 117 kmHigh 14.4°C · Low 6.3°C · 92 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 Muroran) is explained once on the Muroran year overview and on the Sources, method and limits page.