Climate averages 1991–2020
Iga weather
in December.
A cool, moderately wet month: the 10th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Iga: daytime highs average 9.9°C and nights cool to about 2.3°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 62 mm of rain on roughly 7 days, which makes December a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 52 min on an average December day.
The nearest other city in this atlas is Nabari (16 km away). In December its highs average 10.0°C, about as warm as Iga, with 74 mm of rain.
Among the 303 cities listed in Japan, Iga ranks joint 189th of 303 for the warmest December highs and joint 102nd of 303 for the driest December (rainfall, lowest first). The mean December high of those 303 cities is 9.5°C; Iga is 0.4°C warmer than that mean.
From December to January, average highs fall by 2.5°C to 7.3°C, and monthly rainfall rises from 62 mm to 63 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
Iga climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.3°C0.1°C | 0.1°C | 63 | 6.5 | 10.110 h |
| February | 8.4°C0.3°C | 0.3°C | 70 | 8.0 | 10.911 h |
| March | 12.4°C2.8°C | 2.8°C | 119 | 12.0 | 11.912 h |
| April | 17.8°C7.8°C | 7.8°C | 134 | 10.9 | 13.013 h |
| May | 22.5°C13.1°C | 13.1°C | 158 | 11.8 | 14.014 h |
| June | 25.8°C17.8°C | 17.8°C | 220 | 15.0 | 14.414 h |
| July | 29.4°C22.2°C | 22.2°C | 222 | 18.5 | 14.214 h |
| August | 30.8°C23.2°C | 23.2°C | 174 | 15.6 | 13.513 h |
| September | 26.8°C19.6°C | 19.6°C | 223 | 14.6 | 12.412 h |
| October | 21.0°C13.5°C | 13.5°C | 202 | 10.9 | 11.311 h |
| November | 15.5°C7.4°C | 7.4°C | 93 | 7.9 | 10.410 h |
| December, selected | 9.9°C2.3°C | 2.3°C | 62 | 6.7 | 9.910 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
- Nabari in DecemberJapan · 16 kmHigh 10.0°C · Low 2.0°C · 74 mm rain
- Kōka in DecemberJapan · 25 kmHigh 9.5°C · Low 1.9°C · 60 mm rain
- Nara-shi in DecemberJapan · 31 kmHigh 10.2°C · Low 2.2°C · 57 mm rain
- Jōyō in DecemberJapan · 32 kmHigh 9.8°C · Low 2.0°C · 57 mm rain
- Kusatsu in DecemberJapan · 33 kmHigh 9.7°C · Low 2.1°C · 58 mm rain
- Uji in DecemberJapan · 34 kmHigh 10.1°C · Low 2.3°C · 65 mm rain
- Tsu in DecemberJapan · 35 kmHigh 11.1°C · Low 4.5°C · 69 mm rain
- Ōtsu in DecemberJapan · 36 kmHigh 9.5°C · Low 1.8°C · 65 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 Iga) is explained once on the Iga year overview and on the Sources, method and limits page.