Yokosuka weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Good
Best time to visit: April – November
What is the weather like in Yokosuka in May?
In May, Yokosuka is mild: daytime highs average 21 °C, and nights cool down to about 16 °C. The sea averages 19.0 °C – bracing, so a wetsuit helps for longer swims. Expect around 6 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 134 mm in total. All in all, May is a good month for a holiday in Yokosuka.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 14 h 0 min04:38 – 18:37
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 3 daysdew point 18 °C or moreAll months
- Wind
- 27 km/haverage daily peakAll months
- Cloud cover
- 69 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+9Asia/Tokyo
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %48 %
- Few rainy daysweight 30 %47 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Yokosuka in May: quick answers
Is Yokosuka hot in May?
No. In May, Yokosuka is mild: daytime highs average 21 °C and nights drop to about 16 °C.
Can you swim in Yokosuka in May?
Only if you don't mind cold water: in May the sea averages just 19.0 °C. Comfortable swimming is possible from June to November.
Does it rain much in Yokosuka in May?
Rain is frequent, with about 11 rainy days and 134 mm in total.
Yokosuka month by month
The whole year in YokosukaAll destinations: JapanWhere to go in MaySea temperature in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences