Yanai
Japan
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Yanai, Japan

The best months for a swim in Yanai, 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 Yanai, Japan, is 14.8°C (58.6°F). Note: Swimming in 14.8°C (58.6°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in January »

With an average sea temperature of 12.9°C (55.2°F), February is the month with the coldest seawater in Yanai, Japan. Note: Swimming in 12.9°C (55.2°F) is considered life-threatening. Weather in February »

In Yanai, Japan, in March, the average water temperature is 13.3°C (55.9°F). Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Weather in March »

In Yanai, Japan, in April, the average water temperature is 15.2°C (59.4°F). Note: Swimming in 15.2°C (59.4°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 Yanai, Japan, the average seawater temperature in May is 18°C (64.4°F). Note: For swimming, a surface water temperature of 18°C (64.4°F) is not enjoyable for the majority. Weather in May »

In June, the average sea temperature in Yanai, Japan, is 21.5°C (70.7°F). Note: For most, swimming in 21.5°C (70.7°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 June »

In Yanai, Japan, in July, the average water temperature is 24.8°C (76.6°F). Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 24.8°C (76.6°F) water may be enjoyable. Weather in July »

The ideal sea water temperature of 26.8°C (80.2°F) make August the best time for swimming and other water activities in Yanai, Japan. The month with the warmest seawater is August, with an average sea temperature of 26.8°C (80.2°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 25.7°C (78.3°F) make September the best time for swimming and other water activities in Yanai, Japan. In Yanai, the average seawater temperature in September is 25.7°C (78.3°F). Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. Weather in September »

In Yanai, Japan, the average seawater temperature in October is 23.4°C (74.1°F). Note: For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. Weather in October »

In Yanai, Japan, in November, the average water temperature is 20.8°C (69.4°F). Note: For swimming, a surface water temperature of 20.8°C (69.4°F) is not enjoyable for the majority. Weather in November »

In Yanai, Japan, in December, the average water temperature is 17.2°C (63°F). Note: For most, swimming in 17.2°C (63°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 December »

What month is the sea coldest in Yanai?

February is the month with the coldest seawater in Yanai, Japan, with an average sea temperature of 12.9°C (55.2°F).

When are the longest days in Yanai?

June has the longest days of the year, with an average of 14.4h of daylight.

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

With an average sea temperature of 26.8°C (80.2°F), August is the month with the warmest seawater in Yanai, Japan.

What is the month with the shortest days in Yanai?

The month with the shortest days is December, with an average of 9.9h of daylight.
Average sea temperature - Yanai, Japan

The best month for swimming (with the highest average sea temperature) is August (26.8°C).
The coldest month (with the lowest average sea temperature) is February (12.9°C).

Average daylight - Yanai, Japan

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).