Sea Temperature in Nagasaki in January

Complete information on the sea temperature range in the Seto Inland Sea in Nagasaki in January. Historical daily data. Climate details for January. Tips on swimming conditions and beach relaxation in Nagasaki. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Nagasaki in January

57°F

MINIMUN

62°F

AVERAGE

66°F

MAXIMUM

Historical Data of Water Temperature in January in Nagasaki

Water Temperature Chart for Seto Inland Sea in Nagasaki in January

Sea Temperature Table in Nagasaki in January Over the Past Years

Day	2024	2023	2022	Average
Jan 1	63°C	64°C	63°C	62°C
Jan 2	61°C	63°C	59°C	61°C
Jan 3	63°C	64°C	64°C	63°C
Jan 4	61°C	61°C	64°C	62°C
Jan 5	63°C	64°C	66°C	64°C
Jan 6	61°C	64°C	63°C	62°C
Jan 7	61°C	66°C	59°C	62°C
Jan 8	61°C	64°C	61°C	62°C
Jan 9	57°C	66°C	66°C	63°C
Jan 10	59°C	66°C	63°C	62°C
Jan 11	59°C	59°C	63°C	60°C
Jan 12	59°C	61°C	59°C	60°C
Jan 13	59°C	59°C	59°C	59°C
Jan 14	59°C	64°C	66°C	62°C
Jan 15	59°C	59°C	59°C	59°C
Jan 16	59°C	63°C	59°C	60°C
Jan 17	59°C	59°C	59°C	59°C
Jan 18	59°C	64°C	59°C	60°C
Jan 19	59°C	64°C	64°C	61°C
Jan 20	59°C	64°C	66°C	62°C
Jan 21	59°C	66°C	61°C	61°C
Jan 22	59°C	61°C	64°C	61°C
Jan 23	59°C	64°C	63°C	61°C
Jan 24	59°C	64°C	59°C	60°C
Jan 25	59°C	61°C	59°C	59°C
Jan 26	61°C	61°C	59°C	60°C
Jan 27	61°C	64°C	61°C	61°C
Jan 28	61°C	59°C	64°C	61°C
Jan 29	61°C	59°C	64°C	61°C
Jan 30	61°C	61°C	63°C	60°C

Nagasaki Climate and Swimming Opportunities in January

50°F

Average Day Air Temperature

37°F

Average Night Air Temperature

3 in

Precipitation Amount per Month

11 days

Number of Rainy Days

10 hrs

Daylight
per Day

3 hrs

Sunshine
per Day

9 mph

Average Wind Speed

67%

Average
humidity

Nagasaki lies within the Nagasaki Prefecture in Japan. The average daytime temperature in Nagasaki in January is 10°C (49°F), while the nighttime average is 3°C (38°F). There are typically 11 rainy days during the month, with a total precipitation of 69 mm (2.7 inches). The daylight duration in January in Nagasaki is 10 hours, with an average of 3 hours of sunshine per day. The average wind speed in January is 15 km/h (9 mph), and the humidity level is around 67%.

The water temperature in Nagasaki in January ranges from 15°C to 17°C (59°F to 63°F). At the beginning of the month, the average temperature is around 17°C (63°F), shifting to 16°C (61°F) by mid-January and reaching 16°C (61°F) in the last ten days. Overall, the average sea temperature in Nagasaki for January is 16°C (61°F).

Sea Temperature in January in Nearby Cities

Frequently Asked Questions About Water Temperatures in January in Nagasaki

What is the sea temperature in Nagasaki in January?

The water temperature in the Seto Inland Sea in Nagasaki in January ranges from 15°C to 17°C (59°F to 63°F).

Is it possible to swim in the Sea of Japan in Hokkaido in January?

The average sea temperature in Hokkaido in January is 0°C (32°F), and the air temperature is -1°C (31°F), so swimming in such conditions is extremely dangerous due to the risk of hypothermia and cold shock. Only experienced winter swimmers with proper preparation should attempt it.