Climate averages 1991–2020
Imabari weather
in April.
A mild, wet month: the 7th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a mild month in Imabari: daytime highs average 17.5°C and nights cool to about 11.0°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 132 mm of rain on roughly 11 days, which makes April a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 01 min on an average April day.
The nearest other city in this atlas is Saijō (24 km away). In April its highs average 19.3°C, 1.8°C warmer than Imabari, with 134 mm of rain.
Among the 303 cities listed in Japan, Imabari ranks joint 136th of 303 for the warmest April highs and joint 189th of 303 for the driest April (rainfall, lowest first). The mean April high of those 303 cities is 16.7°C; Imabari is 0.8°C warmer than that mean.
From April to May, average highs rise by 4.2°C to 21.8°C, and monthly rainfall rises from 132 mm to 156 mm.
The annual picture
April 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
Imabari climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.5°C4.1°C | 4.1°C | 66 | 11.1 | 10.210 h |
| February | 9.5°C4.1°C | 4.1°C | 80 | 10.8 | 10.911 h |
| March | 12.8°C6.6°C | 6.6°C | 118 | 12.3 | 12.012 h |
| April, selected | 17.5°C11.0°C | 11.0°C | 132 | 11.1 | 13.013 h |
| May | 21.8°C15.6°C | 15.6°C | 156 | 11.1 | 13.914 h |
| June | 24.9°C19.8°C | 19.8°C | 249 | 14.8 | 14.414 h |
| July | 28.5°C24.0°C | 24.0°C | 225 | 15.4 | 14.214 h |
| August | 29.7°C25.0°C | 25.0°C | 142 | 13.5 | 13.413 h |
| September | 26.5°C21.9°C | 21.9°C | 196 | 13.2 | 12.412 h |
| October | 21.4°C16.8°C | 16.8°C | 148 | 10.0 | 11.411 h |
| November | 16.2°C11.4°C | 11.4°C | 82 | 9.2 | 10.410 h |
| December | 11.0°C6.5°C | 6.5°C | 79 | 11.0 | 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
April in nearby cities
- Saijō in AprilJapan · 24 kmHigh 19.3°C · Low 10.6°C · 134 mm rain
- Niihama in AprilJapan · 31 kmHigh 18.5°C · Low 10.4°C · 134 mm rain
- Matsuyama in AprilJapan · 34 kmHigh 18.7°C · Low 10.3°C · 133 mm rain
- Mihara in AprilJapan · 37 kmHigh 18.4°C · Low 8.9°C · 110 mm rain
- Onomichi in AprilJapan · 43 kmHigh 17.9°C · Low 8.9°C · 107 mm rain
- Kure in AprilJapan · 44 kmHigh 16.2°C · Low 10.1°C · 136 mm rain
- Higashihiroshima in AprilJapan · 45 kmHigh 17.3°C · Low 8.1°C · 117 mm rain
- Shinagawa in AprilJapan · 48 kmHigh 18.0°C · Low 8.6°C · 146 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 Imabari) is explained once on the Imabari year overview and on the Sources, method and limits page.