Climate averages 1991–2020
Muroran weather
in June.
A mild, wet month: the 4th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a mild month in Muroran: daytime highs average 17.4°C and nights cool to about 12.2°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 104 mm of rain on roughly 10 days, which makes June a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 13 min on an average June day.
The nearest other city in this atlas is Tomakomai (62 km away). In June its highs average 16.7°C, 0.8°C cooler than Muroran, with 100 mm of rain.
Among the 303 cities listed in Japan, Muroran ranks 301st of 303 for the warmest June highs and joint 14th of 303 for the driest June (rainfall, lowest first). The mean June high of those 303 cities is 24.4°C; Muroran is 6.9°C cooler than that mean.
From June to July, average highs rise by 3.8°C to 21.3°C, and monthly rainfall rises from 104 mm to 153 mm.
The annual picture
June 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, selected | 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 | 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
June in nearby cities
- Tomakomai in JuneJapan · 62 kmHigh 16.7°C · Low 11.6°C · 100 mm rain
- Hakodate in JuneJapan · 64 kmHigh 17.8°C · Low 12.6°C · 121 mm rain
- Chitose in JuneJapan · 78 kmHigh 17.9°C · Low 11.4°C · 77 mm rain
- Eniwa in JuneJapan · 80 kmHigh 18.8°C · Low 11.2°C · 76 mm rain
- Sapporo in JuneJapan · 88 kmHigh 20.1°C · Low 12.2°C · 89 mm rain
- Otaru in JuneJapan · 97 kmHigh 19.6°C · Low 12.2°C · 76 mm rain
- Ebetsu in JuneJapan · 99 kmHigh 19.7°C · Low 11.7°C · 76 mm rain
- Iwamizawa in JuneJapan · 117 kmHigh 20.1°C · Low 11.8°C · 64 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.