Climate averages 1991–2020
Iwamizawa weather
in March.
A cold month with moderate precipitation: the 9th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a cold month in Iwamizawa: daytime highs average 1.9°C and nights cool to about -5.9°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 57 mm of precipitation on roughly 12 days, which makes March a month with moderate precipitation (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 54 min on an average March day.
The nearest other city in this atlas is Ebetsu (20 km away). In March its highs average 1.5°C, about as warm as Iwamizawa, with 55 mm of precipitation.
Among the 303 cities listed in Japan, Iwamizawa ranks joint 297th of 303 for the warmest March highs and joint 4th of 303 for the driest March (precipitation, lowest first). The mean March high of those 303 cities is 11.5°C; Iwamizawa is 9.6°C cooler than that mean.
From March to April, average highs rise by 7.6°C to 9.5°C, and monthly precipitation rises from 57 mm to 67 mm.
The annual picture
March 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
Iwamizawa climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -3.5°C-10.8°C | -10.8°C | 49 | 12.9 | 9.49 h |
| February | -2.5°C-10.0°C | -10.0°C | 43 | 10.8 | 10.510 h |
| March, selected | 1.9°C-5.9°C | -5.9°C | 57 | 11.6 | 11.912 h |
| April | 9.5°C0.1°C | 0.1°C | 67 | 11.8 | 13.413 h |
| May | 16.2°C6.8°C | 6.8°C | 83 | 11.4 | 14.615 h |
| June | 20.1°C11.8°C | 11.8°C | 64 | 9.6 | 15.315 h |
| July | 23.7°C16.3°C | 16.3°C | 113 | 11.5 | 15.015 h |
| August | 24.4°C17.5°C | 17.5°C | 161 | 12.5 | 14.014 h |
| September | 20.8°C13.1°C | 13.1°C | 126 | 13.2 | 12.513 h |
| October | 14.4°C6.3°C | 6.3°C | 92 | 13.6 | 11.111 h |
| November | 6.7°C-0.5°C | -0.5°C | 87 | 16.1 | 9.810 h |
| December | -0.8°C-8.0°C | -8.0°C | 69 | 15.3 | 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
March in nearby cities
- Ebetsu in MarchJapan · 20 kmHigh 1.5°C · Low -6.3°C · 55 mm precipitation
- Sapporo in MarchJapan · 36 kmHigh 1.9°C · Low -5.5°C · 64 mm precipitation
- Eniwa in MarchJapan · 37 kmHigh 2.1°C · Low -5.8°C · 55 mm rain
- Chitose in MarchJapan · 43 kmHigh 2.6°C · Low -5.1°C · 54 mm rain
- Otaru in MarchJapan · 61 kmHigh 1.8°C · Low -3.0°C · 76 mm precipitation
- Tomakomai in MarchJapan · 64 kmHigh 2.2°C · Low -4.0°C · 63 mm rain
- Asahikawa in MarchJapan · 80 kmHigh 0.7°C · Low -7.2°C · 67 mm precipitation
- Muroran in MarchJapan · 117 kmHigh 2.0°C · Low -3.4°C · 57 mm precipitation
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 Iwamizawa) is explained once on the Iwamizawa year overview and on the Sources, method and limits page.