Shibetsu, Japan Climate
The warmest month is August, with an average high of 22°C; the coldest is February, with an average low of -11°C. A normal year brings 1035 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 25
- Normal high
- 17°C
- Normal low
- 11°C
- Reanalysis high
- 25°Cin 1999
- Reanalysis low
- 8°Cin 2010
- Chance of a wet day
- 42%
- Daylight
- 12 h 02 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | -3°C | -10°C | 5°C (1995) | -20°C (2003) | 43 mm | 9.3 |
| February | -3°C | -11°C | 5°C (1992) | -21°C (2019) | 34 mm | 5.7 |
| March | 1°C | -6°C | 11°C (2015) | -18°C (2001) | 53 mm | 9.3 |
| April | 7°C | -1°C | 22°C (2014) | -8°C (2019) | 69 mm | 9.0 |
| May | 13°C | 4°C | 31°C (2019) | -2°C (2007) | 96 mm | 12.4 |
| June | 17°C | 9°C | 29°C (2010) | 2°C (1998) | 99 mm | 12.0 |
| July | 21°C | 13°C | 31°C (2019) | 6°C (1993) | 115 mm | 12.4 |
| August | 22°C | 15°C | 33°C (1994) | 8°C (1997) | 136 mm | 12.4 |
| September | 19°C | 13°C | 30°C (2020) | 3°C (1992) | 144 mm | 12.0 |
| October | 13°C | 7°C | 23°C (1994) | -1°C (2016) | 109 mm | 12.4 |
| November | 6°C | 0°C | 16°C (2003) | -12°C (1998) | 75 mm | 12.0 |
| December | -1°C | -7°C | 11°C (2008) | -17°C (2012) | 62 mm | 9.3 |
| Year | 9°C | 2°C | 1035 mm | 128 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
1035 mm in a normal year, most in September.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Shibetsu.
The muggiest month is August, when 26 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | -8°C | 92% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | -8°C | 91% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | -5°C | 86% | 100% | 0% | 0% | 0% | 0% | 0% |
| April | 0°C | 83% | 100% | 0% | 0% | 0% | 0% | 0% |
| May | 5°C | 84% | 100% | 0% | 0% | 0% | 0% | 0% |
| June | 10°C | 86% | 78% | 19% | 3% | 0% | 0% | 0% |
| July | 15°C | 88% | 28% | 35% | 25% | 12% | 0% | 0% |
| August | 16°C | 87% | 13% | 31% | 30% | 23% | 3% | 0% |
| September | 13°C | 86% | 46% | 32% | 16% | 6% | 1% | 0% |
| October | 7°C | 84% | 95% | 4% | 0% | 0% | 0% | 0% |
| November | 1°C | 85% | 100% | 0% | 0% | 0% | 0% | 0% |
| December | -6°C | 88% | 100% | 0% | 0% | 0% | 0% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is December, with the sky 62 percent covered on average; the cloudiest is July, at 81 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is March, averaging 18.4 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 17, with 15 h 27 min of daylight; the shortest is Dec 21, with 8 h 55 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Shibetsu in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.