Climate averages 1991–2020
Itoshima weather
in April.
A mild, wet month: the 7th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a mild month in Itoshima: daytime highs average 17.9°C and nights cool to about 10.7°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 126 mm of rain on roughly 10 days, which makes April a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 00 min on an average April day.
The nearest other city in this atlas is Maebaru-chūō (2 km away). In April its highs average 17.4°C, 0.5°C cooler than Itoshima, with 126 mm of rain.
Among the 303 cities listed in Japan, Itoshima ranks joint 82nd of 303 for the warmest April highs and joint 174th of 303 for the driest April (rainfall, lowest first). The mean April high of those 303 cities is 16.7°C; Itoshima is 1.2°C warmer than that mean.
From April to May, average highs rise by 4.4°C to 22.3°C, and monthly rainfall rises from 126 mm to 141 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
Itoshima climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.3°C4.1°C | 4.1°C | 64 | 10.2 | 10.210 h |
| February | 9.6°C4.2°C | 4.2°C | 72 | 9.8 | 11.011 h |
| March | 13.0°C6.7°C | 6.7°C | 112 | 11.0 | 12.012 h |
| April, selected | 17.9°C10.7°C | 10.7°C | 126 | 10.4 | 13.013 h |
| May | 22.3°C15.5°C | 15.5°C | 141 | 10.0 | 13.914 h |
| June | 25.4°C19.9°C | 19.9°C | 278 | 14.9 | 14.314 h |
| July | 28.9°C24.1°C | 24.1°C | 262 | 16.6 | 14.114 h |
| August | 30.0°C25.1°C | 25.1°C | 163 | 15.0 | 13.413 h |
| September | 26.6°C21.7°C | 21.7°C | 180 | 12.9 | 12.412 h |
| October | 21.7°C16.6°C | 16.6°C | 101 | 7.7 | 11.411 h |
| November | 16.3°C11.2°C | 11.2°C | 88 | 8.9 | 10.510 h |
| December | 10.8°C6.3°C | 6.3°C | 72 | 9.9 | 10.010 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
- Maebaru-chūō in AprilJapan · 2 kmHigh 17.4°C · Low 10.9°C · 126 mm rain
- Fukuoka in AprilJapan · 22 kmHigh 18.4°C · Low 9.8°C · 130 mm rain
- Karatsu in AprilJapan · 23 kmHigh 18.4°C · Low 11.0°C · 134 mm rain
- Kasuga in AprilJapan · 26 kmHigh 19.0°C · Low 9.1°C · 130 mm rain
- Saga in AprilJapan · 36 kmHigh 18.7°C · Low 9.7°C · 145 mm rain
- Tosu in AprilJapan · 37 kmHigh 19.1°C · Low 8.7°C · 147 mm rain
- Kurume in AprilJapan · 40 kmHigh 19.2°C · Low 8.9°C · 147 mm rain
- Munakata in AprilJapan · 45 kmHigh 18.5°C · Low 10.1°C · 119 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 Itoshima) is explained once on the Itoshima year overview and on the Sources, method and limits page.
Maebaru-chūō lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.