Yokosuka
Japan
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Yokosuka, Japan

The best months for a swim in Yokosuka, Japan, are August and September, with a perfect temperature - varying between 25°C (77°F) and 29°C (84.2°F), and scarce rainfall.
In January, the average sea temperature in Yokosuka, Japan, is 16.9°C (62.4°F). Note: For most, swimming in 16.9°C (62.4°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F). Weather in January »

Months with the coldest seawater in Yokosuka, Japan, are February and March, with an average sea temperature of 16.2°C (61.2°F). Note: For most, swimming in 16.2°C (61.2°F) is not an enjoyable activity. Weather in February »

February and March, with an average sea temperature of 16.2°C (61.2°F), are months with the coldest seawater in Yokosuka, Japan. Note: For most, swimming in 16.2°C (61.2°F) is not an enjoyable activity. Weather in March »

In Yokosuka, Japan, in April, the average water temperature is 17.5°C (63.5°F). Note: Swimming in 17.5°C (63.5°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F). Weather in April »

In May, the average sea temperature in Yokosuka, Japan, is 19.4°C (66.9°F). Note: Swimming in 19.4°C (66.9°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F). Weather in May »

In Yokosuka, Japan, the average seawater temperature in June is 21.8°C (71.2°F). Note: Swimming in 21.8°C (71.2°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F). Weather in June »

In Yokosuka, Japan, in July, the average water temperature is 24.8°C (76.6°F). Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 24.8°C (76.6°F) water. Weather in July »

The ideal sea water temperature of 26.2°C (79.2°F) make August the best time for swimming and other water activities in Yokosuka, Japan. The month with the warmest seawater is August, with an average sea temperature of 26.2°C (79.2°F). Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable. Weather in August »

The ideal sea water temperature of 25.9°C (78.6°F) make September the best time for swimming and other water activities in Yokosuka, Japan. In September, the average sea temperature is 25.9°C (78.6°F). Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods. Weather in September »

In Yokosuka, Japan, in October, the average water temperature is 23.3°C (73.9°F). Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 23.3°C (73.9°F) water may be enjoyable. Weather in October »

In Yokosuka, Japan, the average seawater temperature in November is 21.7°C (71.1°F). Note: Swimming in 21.7°C (71.1°F) is not enjoyable for the majority. Weather in November »

In December, the average sea temperature in Yokosuka, Japan, is 18.9°C (66°F). Note: Swimming in 18.9°C (66°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F). Weather in December »

What months are the sea coldest in Yokosuka?

February and March, with an average sea temperature of 16.2°C (61.2°F), are months with the coldest seawater.

When are the longest days in Yokosuka?

June has the longest days of the year in Yokosuka, with an average of 14.5h of daylight.

What is the month with the warmest sea water in Yokosuka?

August is the month with the warmest seawater in Yokosuka, Japan, with an average sea temperature of 26.2°C (79.2°F).

What is the month with the shortest days in Yokosuka?

The month with the shortest days is December, with an average of 9.8h of daylight.
Average sea temperature - Yokosuka, Japan

The best month for swimming (with the highest average sea temperature) is August (26.2°C).
Coldest months (with the lowest average sea temperature) are February and March (16.2°C).

Average daylight - Yokosuka, Japan

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).