Climate averages 1991–2020
Yonago weather
in December.
A cool, very wet month: the 10th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Yonago: daytime highs average 9.9°C and nights cool to about 5.0°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 198 mm of rain on roughly 21 days, which makes December a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 49 min on an average December day.
The nearest other city in this atlas is Matsue (26 km away). In December its highs average 10.4°C, 0.5°C warmer than Yonago, with 182 mm of rain.
Among the 303 cities listed in Japan, Yonago ranks joint 189th of 303 for the warmest December highs and 288th of 303 for the driest December (rainfall, lowest first). The mean December high of those 303 cities is 9.5°C; Yonago is 0.4°C warmer than that mean.
From December to January, average highs fall by 2.7°C to 7.2°C, and monthly rainfall falls from 198 mm to 193 mm.
The annual picture
December 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
Yonago climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.2°C2.5°C | 2.5°C | 193 | 23.2 | 10.110 h |
| February | 7.9°C2.4°C | 2.4°C | 142 | 18.1 | 10.911 h |
| March | 11.3°C4.8°C | 4.8°C | 138 | 15.2 | 11.912 h |
| April | 16.2°C9.1°C | 9.1°C | 110 | 11.2 | 13.113 h |
| May | 20.5°C13.8°C | 13.8°C | 121 | 10.4 | 14.014 h |
| June | 23.9°C18.2°C | 18.2°C | 142 | 11.7 | 14.515 h |
| July | 27.5°C22.9°C | 22.9°C | 178 | 13.1 | 14.314 h |
| August | 28.9°C24.0°C | 24.0°C | 116 | 11.3 | 13.513 h |
| September | 25.0°C20.3°C | 20.3°C | 188 | 13.3 | 12.412 h |
| October | 20.1°C14.9°C | 14.9°C | 117 | 11.3 | 11.311 h |
| November | 15.2°C9.8°C | 9.8°C | 125 | 15.2 | 10.310 h |
| December, selected | 9.9°C5.0°C | 5.0°C | 198 | 21.1 | 9.810 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
December in nearby cities
- Matsue in DecemberJapan · 26 kmHigh 10.4°C · Low 6.7°C · 182 mm rain
- Izumo in DecemberJapan · 52 kmHigh 10.2°C · Low 6.0°C · 103 mm rain
- Tsuyama in DecemberJapan · 74 kmHigh 9.9°C · Low 1.9°C · 52 mm rain
- Tottori-shi in DecemberJapan · 82 kmHigh 10.0°C · Low 5.2°C · 152 mm rain
- Kurashiki in DecemberJapan · 102 kmHigh 11.3°C · Low 4.8°C · 55 mm rain
- Okayama in DecemberJapan · 103 kmHigh 11.0°C · Low 3.1°C · 46 mm rain
- Fukuyama in DecemberJapan · 106 kmHigh 11.3°C · Low 4.2°C · 47 mm rain
- Onomichi in DecemberJapan · 114 kmHigh 10.7°C · Low 3.8°C · 47 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 Yonago) is explained once on the Yonago year overview and on the Sources, method and limits page.