Climate averages 1991–2020
Hiroshima weather
in March.
A cool, wet month: the 9th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a cool month in Hiroshima: daytime highs average 13.1°C and nights cool to about 3.9°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 110 mm of rain on roughly 12 days, which makes March a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 57 min on an average March day.
The nearest other city in this atlas is Hatsukaichi (12 km away). In March its highs average 13.4°C, about as warm as Hiroshima, with 116 mm of rain.
Among the 303 cities listed in Japan, Hiroshima ranks joint 64th of 303 for the warmest March highs and joint 88th of 303 for the driest March (rainfall, lowest first). The mean March high of those 303 cities is 11.5°C; Hiroshima is 1.6°C warmer than that mean.
From March to April, average highs rise by 5.2°C to 18.3°C, and monthly rainfall rises from 110 mm to 124 mm.
The annual picture
March 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
Hiroshima climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.0°C1.1°C | 1.1°C | 55 | 9.5 | 10.110 h |
| February | 9.3°C1.3°C | 1.3°C | 68 | 9.9 | 10.911 h |
| March, selected | 13.1°C3.9°C | 3.9°C | 110 | 11.7 | 11.912 h |
| April | 18.3°C8.7°C | 8.7°C | 124 | 10.3 | 13.013 h |
| May | 22.8°C13.8°C | 13.8°C | 143 | 10.3 | 13.914 h |
| June | 25.8°C18.5°C | 18.5°C | 215 | 14.3 | 14.414 h |
| July | 29.1°C22.8°C | 22.8°C | 251 | 16.1 | 14.214 h |
| August | 30.4°C23.8°C | 23.8°C | 157 | 14.0 | 13.413 h |
| September | 26.9°C19.9°C | 19.9°C | 188 | 12.6 | 12.412 h |
| October | 21.5°C13.7°C | 13.7°C | 109 | 8.2 | 11.311 h |
| November | 15.9°C8.2°C | 8.2°C | 71 | 8.1 | 10.410 h |
| December | 10.3°C3.4°C | 3.4°C | 64 | 9.6 | 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
March in nearby cities
- Hatsukaichi in MarchJapan · 12 kmHigh 13.4°C · Low 4.5°C · 116 mm rain
- Kure in MarchJapan · 22 kmHigh 11.9°C · Low 5.9°C · 116 mm rain
- Higashihiroshima in MarchJapan · 26 kmHigh 12.3°C · Low 3.4°C · 101 mm rain
- Iwakuni in MarchJapan · 34 kmHigh 13.0°C · Low 5.3°C · 116 mm rain
- Mihara in MarchJapan · 58 kmHigh 13.3°C · Low 4.2°C · 95 mm rain
- Imabari in MarchJapan · 62 kmHigh 12.8°C · Low 6.6°C · 118 mm rain
- Shūnan in MarchJapan · 67 kmHigh 11.3°C · Low 3.4°C · 124 mm rain
- Matsuyama in MarchJapan · 69 kmHigh 13.6°C · Low 5.7°C · 118 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 Hiroshima) is explained once on the Hiroshima year overview and on the Sources, method and limits page.