Saga Prefecture
Japan
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Saga Prefecture, Japan

The best months for a swim in Saga Prefecture, 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 Saga Prefecture, Japan, the average seawater temperature in January is 16.1°C (61°F). Note: Swimming in 16.1°C (61°F) is not enjoyable for the majority. Weather in January »

In February, the average sea temperature in Saga Prefecture, Japan, is 14.7°C (58.5°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 February »

March is the month with the coldest seawater in Saga Prefecture, Japan, with an average sea temperature of 14.4°C (57.9°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 April, the average sea temperature in Saga Prefecture, Japan, is 15.9°C (60.6°F). Note: For swimming, a surface water temperature of 15.9°C (60.6°F) is not enjoyable for the majority. Weather in April »

In Saga Prefecture, Japan, the average seawater temperature in May is 18.7°C (65.7°F). Note: For swimming, a surface water temperature of 18.7°C (65.7°F) is not enjoyable for the majority. Weather in May »

In June, the average sea temperature in Saga Prefecture, Japan, is 22.1°C (71.8°F). Note: For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. Weather in June »

The ideal sea water temperature of 25.5°C (77.9°F) make July the best time for swimming and other water activities in Saga Prefecture, Japan. In Saga Prefecture, Japan, the average water temperature is 25.5°C (77.9°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 July »

The ideal sea water temperature of 27.6°C (81.7°F) make August the best time for swimming and other water activities in Saga Prefecture, Japan. With an average sea temperature of 27.6°C (81.7°F), August is the month with the warmest seawater. 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 26.3°C (79.3°F) make September the best time for swimming and other water activities in Saga Prefecture, Japan. In September, the average sea temperature is 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 September »

In Saga Prefecture, Japan, the average seawater temperature in October is 24°C (75.2°F). Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 24°C (75.2°F) water may be enjoyable. Weather in October »

In Saga Prefecture, Japan, the average seawater temperature in November is 21.3°C (70.3°F). Note: For most, swimming in 21.3°C (70.3°F) is not an enjoyable activity. Weather in November »

In December, the average sea temperature in Saga Prefecture, Japan, is 18.3°C (64.9°F). Note: For most, swimming in 18.3°C (64.9°F) is not an enjoyable activity. Weather in December »

When is the sea coldest in Saga Prefecture?

The month with the coldest seawater in Saga Prefecture, Japan, is March, with an average sea temperature of 14.4°C (57.9°F).

When are the longest days in Saga Prefecture?

With an average of 14.3h of daylight, June has the longest days of the year in Saga Prefecture.

What is the month with the warmest sea water in Saga Prefecture?

August is the month with the warmest seawater, with an average sea temperature of 27.6°C (81.7°F).

What is the month with the shortest days in Saga Prefecture?

December has the shortest days of the year in Saga Prefecture, with an average of 10h of daylight.
Average sea temperature - Saga Prefecture, Japan

The best month for swimming (with the highest average sea temperature) is August (27.6°C).
The coldest month (with the lowest average sea temperature) is March (14.4°C).

Average daylight - Saga Prefecture, Japan