Numazu
Japan
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Numazu, Japan

The best months for a swim in Numazu, Japan, are July through September, with a perfect temperature - varying between 25°C (77°F) and 29°C (84.2°F), and scarce rainfall.
In Numazu, Japan, the average seawater temperature in January is 15.8°C (60.4°F). Note: Swimming in 15.8°C (60.4°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 January »

With an average sea temperature of 14.9°C (58.8°F), February is the month with the coldest seawater in Numazu, Japan. Note: Swimming in 14.9°C (58.8°F) is considered dangerous. Weather in February »

In March, the average sea temperature in Numazu, Japan, is 15.1°C (59.2°F). Note: For swimming, a surface water temperature of 15.1°C (59.2°F) is not enjoyable for the majority. Weather in March »

In April, the average sea temperature in Numazu, Japan, is 16.8°C (62.2°F). Note: Swimming in 16.8°C (62.2°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 April »

In Numazu, Japan, the average seawater temperature in May is 18.9°C (66°F). Note: For swimming, a surface water temperature of 18.9°C (66°F) is not enjoyable for the majority. Weather in May »

In June, the average sea temperature in Numazu, Japan, is 21.6°C (70.9°F). Note: Swimming in 21.6°C (70.9°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 June »

The ideal sea water temperature of 25.1°C (77.2°F) make July the best time for swimming and other water activities in Numazu, Japan. In July, the average sea temperature is 25.1°C (77.2°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 July »

The ideal sea water temperature of 26.3°C (79.3°F) make August the best time for swimming and other water activities in Numazu, Japan. The month with the warmest seawater is August, with an average sea temperature of 26.3°C (79.3°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 August »

The ideal sea water temperature of 25.8°C (78.4°F) make September the best time for swimming and other water activities in Numazu, Japan. In September, the average sea temperature is 25.8°C (78.4°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 Numazu, Japan, in October, the average water temperature is 23.2°C (73.8°F). Note: For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. Weather in October »

In Numazu, Japan, the average seawater temperature in November is 20.8°C (69.4°F). Note: For most, swimming in 20.8°C (69.4°F) is not an enjoyable activity. Weather in November »

In Numazu, Japan, in December, the average water temperature is 17.8°C (64°F). Note: For most, swimming in 17.8°C (64°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 is the month with the coldest sea water in Numazu?

With an average sea temperature of 14.9°C (58.8°F), February is the month with the coldest seawater in Numazu, Japan.

When are the longest days in Numazu?

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

What month is the sea warmest in Numazu?

The month with the warmest seawater in Numazu is August, with an average sea temperature of 26.3°C (79.3°F).

What is the month with the shortest days in Numazu?

December has the shortest days of the year, with an average of 9.8h of daylight.
Average sea temperature - Numazu, Japan

The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is February (14.9°C).

Average daylight - Numazu, Japan

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