Weatheo

Yokosuka Weather by Month

Average temperatures, rainfall and humidity for Yokosuka, Japan, month by month, built from OpenWeather’s historical records. Use it to see what a typical Yokosuka month looks like before you travel — then check the live Yokosuka forecast for the days ahead.

Warmest month

August

31°C average high

Coolest month

January

3°C average low

Wettest month

June

168 mm of rain

Driest month

January

32 mm of rain

Average temperature and rainfall in Yokosuka by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

MonthAvg highAvg lowRecord low / highRainfallHumidityWind
January10°C3°C-5°C / 18°C
32 mm
58%16 km/h
February11°C4°C-3°C / 22°C
54 mm
60%17 km/h
March15°C8°C0°C / 27°C
97 mm
65%17 km/h
April19°C12°C3°C / 26°C
120 mm
71%18 km/h
May23°C17°C8°C / 31°C
114 mm
75%17 km/h
June26°C20°C14°C / 36°C
168 mm
82%14 km/h
July30°C24°C18°C / 38°C
130 mm
84%15 km/h
August31°C25°C18°C / 37°C
123 mm
81%16 km/h
September28°C22°C14°C / 36°C
151 mm
80%15 km/h
October22°C16°C9°C / 32°C
132 mm
74%16 km/h
November17°C11°C-1°C / 26°C
69 mm
67%15 km/h
December13°C5°C-2°C / 23°C
40 mm
59%16 km/h

Best time to visit Yokosuka

The most comfortable time to visit Yokosuka is generally May to June and October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around June, totalling about 1,230 mm a year.

Travellers who prefer heat should aim for August, when highs average 31°C. June is the month to avoid if rain would spoil your plans — it averages 168 mm, roughly 5× the rainfall of the driest month (January).

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Yokosuka forecast for what is happening now.

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