Sea temperatures, water sports and vacation activities near Kosai-shi, Japan

Water temperatures throughout the year and general information about Kosai-shi...

Kosai-shi is a coastal city in Japan. It is a relatively small coastal town close to the water with a population of 43700 people. The water temperature around Kosai-shi varies significantly throughout the year. The temperature ranges from 13.9°C (57.1°F) in March up to 26°C (78.8°F) in the month of August, as shown in the graph below. The average water temperature throughout the year is 20°C (67°F) and the best time for water activities is late summer, since Kosai-shi is located in the northern hemisphere.
Hover over the bars to see temperature for each month in Celsius and Fahrenheit.

What is the current water temperature near Kosai-shi?

The current water temperature in the month of September near Kosai-shi is approximately:

Are there surf spots close to Kosai-shi?

There are not too many surf spots close to Kosai-shi. The next good one is Akabane Long Beach, which is 20.6km (24.3miles) away from Kosai-shi. Click here to check out more information on Akabane Long Beach and its current water temperature. Other fun surfspots near Kosai-shi are Omaezaki, which is ca 39.2km (24.3miles) away, and Shizunami, located ca 39.9km (24.8miles) from Kosai-shi.

Are there nice beaches near Kosai-shi?

No, not too many beaches are located near to Kosai-shi. The closest decent one is Kujukuri Beach, which is more than 175.7km (109.1miles) away from Kosai-shi. If you have some extra time, you can also try Haeundae Beach, roughly 473.8km (294.3miles) away from Kosai-shi.

What wetsuit is recommended for Kosai-shi?

The water temperature around Kosai-shi is very warm, reaching up to 26°C (79°F) in the months of July, August, and September. During this time, in the late summer, a rashguard or thin top might be required for sensitive people, but most will be fine without a wetsuit for surfing, swimming, snorkelling, or scuba diving around Kosai-shi. However, during early spring, sea temperatures come down to roughly 14°C (57°F). In this season, a 4/3 wetsuit is recommended to feel comfortable, but some people might even be fine with a good 2/3mm suit . For very windy conditions and cold mornings/evenings, it might be better to carry a pair of boots and a hoodie.

How is the scuba diving and fishing close to Kosai-shi?

Due to relatively large temperature changes throughout the year, fishing and Scuba diving conditions alter quite a bit depending on the season. The temperature ranges from 14 to 19°C (57-66°F) during February, March, and April. Atlantic Mackerel, Winter Flounder, and Tautog love this temperature range. Nevertheless, the conditions normally change during summer when sea temperatures go up to 21 to 26°C (70-79°F). Fish which like to swim in waters of this temperature range include: Barracuda, Black Marlin, Blue Marlin, Jack Crevalle, Sailfish, and Yellowfin Tuna.

Directions to Kosai-shi: How do I get there?

Please follow the directions in the map below.

Interesting facts about Kosai-shi...

Do you know what the the city San Benito in the United States, the city Pietra Ligure in the Italy, and the city Gravdal in the Norway have in common with Kosai-shi? Click on the links to find out...