Karatsu Water Temperature

Karatsu is a city close to Sea of Japan. August is the month with the highest water temperature at 80.2°F / 26.8°C.
The coldest month is February with an average water temperature of 56.7°F / 13.7°C.
October is the driest at 0in / 0mm and July the wettest month with 8.6in / 217.7mm.
With an average air temperature of 79.7°F / 26.5°C, August is the warmest month in a year. January is the coldest with 41.7°F / 5.4°C average air temperature.
The Climate is described as mild temperate climate with hot summer. Best time to Visit would be in September, June, July, August.

Karatsu Summary

Description Value
Current water temperature 16 °C / 60.8 °F
Warmest Month Water Temperature: August with 26.8°C / 80.2°F
Coldest Month Water Temperature: February with 13.7°C / 56.7°F
Warmest Month Air Temperature: August with 26.5°C / 79.7°F
Coldest Month Air Temperature: January with 5.4°C / 41.7°F
Wettest Month: July with 217.7mm / 8.6in
Driest Month: October with 0mm / 0in
Highest Humidity July with 85.5%
Lowest Humidity January with 68.5%
Best Time to Visit: September, June, July, August
Climate Classification mild temperate climate with hot summer

Karatsu water temperature by month

Sea of Japan water temperature by month

Max. Water

Temperature (°C)

ø. Water

Temperature (°C)

Min. Water

Temperature (°C)

January

15.9 15 14.1

February

14.1 13.7 13.4

March

14.3 13.8 13.4

April

16.3 15.1 14.2

May

19.2 17.7 16.4

June

22.1 20.6 19.2

July

26.2 24.2 22.4

August

27 26.7 26.1

September

26.1 25.1 23.7

October

23.7 22.5 21.3

November

21.4 20.1 18.7

December

18.6 17.3 15.9

Sea of Japan water temperature by month

Max. Water

Temperature (°F)

ø. Water

Temperature (°F)

Min. Water

Temperature (°F)

January

60.6 59 57.4

February

57.4 56.7 56.1

March

57.7 56.8 56.1

April

61.3 59.2 57.6

May

66.6 63.9 61.5

June

71.8 69.1 66.6

July

79.2 75.6 72.3

August

80.6 80.1 79

September

79 77.2 74.7

October

74.7 72.5 70.3

November

70.5 68.2 65.7

December

65.5 63.1 60.6
August is the month with the warmest water temperature at 80.2°F / 26.8°C. The month with the coldest is February with an average water temperature of 56.7°F / 13.7°C.

Karatsu weather today & 14-day weather forecast

Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Apr. 12
Light shower rain
67 °F
51°F
20 °C
11°C
1mph (2km/h)
east-southeast
0in (5mm)
80 %
74%
Apr. 13
Light rain
65 °F
53°F
18 °C
12°C
2mph (3km/h)
south-southwest
0in (7mm)
90 %
88%
Apr. 14
Broken clouds
61 °F
46°F
16 °C
8°C
2mph (4km/h)
southwest
0in (0mm)
15 %
65%
Apr. 15
Overcast clouds
68 °F
43°F
20 °C
6°C
1mph (2km/h)
east-southeast
0in (0mm)
0 %
47%
Apr. 16
Overcast clouds
72 °F
49°F
22 °C
10°C
1mph (1km/h)
south
0in (0mm)
0 %
60%
Apr. 17
Overcast clouds
64 °F
49°F
18 °C
10°C
1mph (2km/h)
south-southwest
0in (1mm)
15 %
73%
Apr. 18
Clear Sky
71 °F
46°F
22 °C
8°C
2mph (3km/h)
southwest
0in (0mm)
0 %
54%
Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Apr. 19
Scattered clouds
72 °F
44°F
22 °C
7°C
1mph (2km/h)
south
0in (0mm)
0 %
38%
Apr. 20
Few clouds
68 °F
48°F
20 °C
9°C
1mph (2km/h)
west-southwest
0in (0mm)
0 %
45%
Apr. 21
Clear Sky
67 °F
48°F
20 °C
9°C
2mph (3km/h)
west-southwest
0in (0mm)
0 %
59%
Apr. 22
Scattered clouds
70 °F
48°F
21 °C
9°C
2mph (3km/h)
south
0in (0mm)
0 %
51%
Apr. 23
Overcast clouds
73 °F
52°F
23 °C
11°C
1mph (2km/h)
west-northwest
0in (0mm)
0 %
47%
Apr. 24
Overcast clouds
77 °F
55°F
25 °C
13°C
2mph (3km/h)
southeast
0in (2mm)
60 %
81%
Apr. 25
Broken clouds
71 °F
53°F
22 °C
12°C
2mph (3km/h)
west-southwest
0in (0mm)
10 %
73%
Apr. 26
Few clouds
76 °F
53°F
25 °C
11°C
2mph (2km/h)
west-northwest
0in (0mm)
0 %
67%
Apr. 27
Scattered clouds
80 °F
53°F
26 °C
11°C
2mph (3km/h)
east-southeast
0in (0mm)
0 %
62%

Karatsu weather by month / climate table

Max.

Temperature

°C

ø.

Temperature

°C

Min.

Temperature

(°C)

Precip.

(mm)

Rainy Days

(d)

Rel. Humidity

(%)

January

9 5.4 2.2 23.8 0 68.5%

February

12.1 6.2 2.2 27 0 68.9%

March

15.5 9.2 4.3 15.2 2 69.4%

April

19.4 13.6 8.3 23.5 1 71.4%

May

23.9 18 12.9 13.1 1 74.7%

June

26 21.5 16.4 151 10 82.8%

July

30.3 25.2 21.3 217.7 17 85.5%

August

31.3 26.5 22.9 154.2 14 81.2%

September

28.2 23.3 18.9 66.6 8 80.2%

October

24.4 18.3 12.9 0 0 72.7%

November

19 12.9 8.2 22.6 0 71.7%

December

13.5 7.7 3.4 28 1 70%

Max.

Temperature

°F

ø.

Temperature

°F

Min.

Temperature

(°F)

Precip.

(in)

Rainy Days

(d)

Rel. Humidity

(%)

January

48.2 41.7 36 0.9 0 68.5%

February

53.8 43.2 36 1.1 0 68.9%

March

59.9 48.6 39.7 0.6 2 69.4%

April

66.9 56.5 46.9 0.9 1 71.4%

May

75 64.4 55.2 0.5 1 74.7%

June

78.8 70.7 61.5 5.9 10 82.8%

July

86.5 77.4 70.3 8.6 17 85.5%

August

88.3 79.7 73.2 6.1 14 81.2%

September

82.8 73.9 66 2.6 8 80.2%

October

75.9 64.9 55.2 0 0 72.7%

November

66.2 55.2 46.8 0.9 0 71.7%

December

56.3 45.9 38.1 1.1 1 70%
October is the month with the lowest rain of 0in / 0mm and July with the highest precipitation in a year with 8.6in / 217.7mm. The avg. temperature is around 79.7°F / 26.5°C, August is the month with the highest temperature. January is the coolest with 41.7°F / 5.4°C average temperature.

Activities & POI in Karatsu

Type of Activity List
Beach 西ノ浜
Attraction 鏡山温泉茶屋 美人の湯, Itoshima Kakigoya
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