Climate averages 1991–2020
Iida weather
in January.
A cold, wet month: the coolest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cold month in Iida: daytime highs average 4.0°C and nights cool to about -4.5°C. By daytime temperature it is the coolest month of the year.
Expect about 99 mm of rain on roughly 12 days, which makes January a wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 10 h 03 min on an average January day.
The nearest other city in this atlas is Nakatsugawa (29 km away). In January its highs average 5.3°C, 1.3°C warmer than Iida, with 96 mm of rain.
Among the 303 cities listed in Japan, Iida ranks joint 255th of 303 for the warmest January highs and joint 265th of 303 for the driest January (rainfall, lowest first). The mean January high of those 303 cities is 7.0°C; Iida is 2.9°C cooler than that mean.
From January to February, average highs rise by 1.3°C to 5.3°C, and monthly rainfall rises from 99 mm to 109 mm.
The annual picture
January 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
Iida climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 4.0°C-4.5°C | -4.5°C | 99 | 11.8 | 10.010 h |
| February | 5.3°C-3.9°C | -3.9°C | 109 | 10.4 | 10.911 h |
| March | 9.7°C0.4°C | 0.4°C | 171 | 13.1 | 11.912 h |
| April | 16.3°C5.9°C | 5.9°C | 174 | 12.8 | 13.113 h |
| May | 21.2°C11.3°C | 11.3°C | 191 | 13.7 | 14.014 h |
| June | 24.2°C16.0°C | 16.0°C | 263 | 18.0 | 14.515 h |
| July | 27.5°C20.1°C | 20.1°C | 308 | 20.3 | 14.314 h |
| August | 28.8°C20.9°C | 20.9°C | 184 | 18.5 | 13.513 h |
| September | 25.3°C17.4°C | 17.4°C | 228 | 15.5 | 12.412 h |
| October | 19.8°C11.3°C | 11.3°C | 210 | 12.9 | 11.311 h |
| November | 13.8°C5.0°C | 5.0°C | 126 | 10.4 | 10.310 h |
| December | 7.3°C-0.7°C | -0.7°C | 100 | 12.0 | 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
January in nearby cities
- Nakatsugawa in JanuaryJapan · 29 kmHigh 5.3°C · Low -3.7°C · 96 mm rain
- Minami-Alps in JanuaryJapan · 59 kmHigh 6.3°C · Low -2.1°C · 80 mm rain
- Kai in JanuaryJapan · 65 kmHigh 5.8°C · Low -2.4°C · 65 mm rain
- Tajimi in JanuaryJapan · 66 kmHigh 7.3°C · Low -1.5°C · 69 mm rain
- Kofu in JanuaryJapan · 69 kmHigh 6.5°C · Low -2.4°C · 65 mm rain
- Kani in JanuaryJapan · 70 kmHigh 7.1°C · Low -1.8°C · 66 mm rain
- Seto in JanuaryJapan · 73 kmHigh 7.8°C · Low -1.1°C · 54 mm rain
- Toyota in JanuaryJapan · 78 kmHigh 8.4°C · Low -0.9°C · 63 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 Iida) is explained once on the Iida year overview and on the Sources, method and limits page.