Climate averages 1991–2020
Yokosuka weather
in April.
A mild, wet month: the 8th 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 Yokosuka: daytime highs average 16.1°C and nights cool to about 11.3°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 126 mm of rain on roughly 12 days, which makes April a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 03 min on an average April day.
The nearest other city in this atlas is Yokohama (17 km away). In April its highs average 16.2°C, about as warm as Yokosuka, with 115 mm of rain.
Among the 303 cities listed in Japan, Yokosuka ranks joint 232nd 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; Yokosuka is 0.6°C cooler than that mean.
From April to May, average highs rise by 3.7°C to 19.8°C, and monthly rainfall rises from 126 mm to 138 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
Yokosuka climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.2°C4.3°C | 4.3°C | 81 | 7.4 | 10.110 h |
| February | 9.6°C4.3°C | 4.3°C | 84 | 8.6 | 10.911 h |
| March | 12.3°C6.9°C | 6.9°C | 144 | 13.0 | 11.912 h |
| April, selected | 16.1°C11.3°C | 11.3°C | 126 | 11.6 | 13.113 h |
| May | 19.8°C15.7°C | 15.7°C | 138 | 10.9 | 14.014 h |
| June | 22.6°C19.2°C | 19.2°C | 182 | 12.9 | 14.514 h |
| July | 25.8°C22.8°C | 22.8°C | 147 | 11.5 | 14.314 h |
| August | 27.4°C24.3°C | 24.3°C | 107 | 9.8 | 13.513 h |
| September | 25.1°C21.7°C | 21.7°C | 185 | 13.2 | 12.412 h |
| October | 20.6°C16.8°C | 16.8°C | 222 | 12.7 | 11.311 h |
| November | 16.2°C11.8°C | 11.8°C | 115 | 10.7 | 10.310 h |
| December | 11.7°C7.0°C | 7.0°C | 73 | 8.5 | 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
April in nearby cities
- Yokohama in AprilJapan · 17 kmHigh 16.2°C · Low 10.1°C · 115 mm rain
- Fujisawa in AprilJapan · 19 kmHigh 16.0°C · Low 10.4°C · 151 mm rain
- Chigasaki in AprilJapan · 25 kmHigh 16.1°C · Low 10.3°C · 151 mm rain
- Kisarazu in AprilJapan · 26 kmHigh 17.2°C · Low 10.5°C · 138 mm rain
- Kawasaki in AprilJapan · 27 kmHigh 16.9°C · Low 9.9°C · 115 mm rain
- Hiratsuka in AprilJapan · 30 kmHigh 16.2°C · Low 9.8°C · 176 mm rain
- Minamirinkan in AprilJapan · 31 kmHigh 16.3°C · Low 8.3°C · 125 mm rain
- Ōta in AprilJapan · 31 kmHigh 17.0°C · Low 9.4°C · 115 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 Yokosuka) is explained once on the Yokosuka year overview and on the Sources, method and limits page.