Karatsu Water Temperature

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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 /
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

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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
The warmest water temperature are in August with around 80.2°F / 26.8°C. The coldest in February with an average water temperature of 56.7°F / 13.7°C.

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Karatsu weather today & 14-day weather forecast

Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Jul. 02
Clear Sky
90 °F
75°F
32 °C
24°C
1mph (1km/h)
southwest
0in (0mm)
0 %
79%
Jul. 03
Few clouds
90 °F
74°F
32 °C
23°C
1mph (1km/h)
southwest
0in (0mm)
0 %
75%
Jul. 04
Clear Sky
90 °F
74°F
32 °C
24°C
1mph (2km/h)
southwest
0in (0mm)
0 %
75%
Jul. 05
Few clouds
90 °F
74°F
32 °C
23°C
1mph (2km/h)
west-southwest
0in (0mm)
0 %
77%
Jul. 06
Few clouds
87 °F
75°F
31 °C
24°C
1mph (2km/h)
west-southwest
0in (0mm)
0 %
78%
Jul. 07
Clear Sky
96 °F
73°F
35 °C
23°C
1mph (2km/h)
west-southwest
0in (0mm)
0 %
72%
Jul. 08
Few clouds
91 °F
76°F
33 °C
24°C
2mph (3km/h)
north-northwest
0in (0mm)
20 %
74%
Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Jul. 09
Overcast clouds
93 °F
76°F
34 °C
24°C
3mph (5km/h)
east
0in (2mm)
35 %
68%
Jul. 10
Thunderstorm with rain
84 °F
77°F
29 °C
25°C
5mph (8km/h)
east-northeast
1in (15mm)
85 %
73%
Jul. 11
Scattered clouds
92 °F
82°F
33 °C
28°C
4mph (6km/h)
east-southeast
0in (0mm)
0 %
64%
Jul. 12
Scattered clouds
92 °F
76°F
33 °C
24°C
1mph (2km/h)
south-southwest
0in (0mm)
20 %
70%
Jul. 13
Scattered clouds
94 °F
78°F
34 °C
25°C
1mph (1km/h)
northeast
0in (0mm)
10 %
70%
Jul. 14
Clear Sky
92 °F
74°F
34 °C
23°C
1mph (2km/h)
north-northwest
0in (0mm)
0 %
74%
Jul. 15
Few clouds
90 °F
71°F
32 °C
21°C
2mph (3km/h)
south
0in (0mm)
0 %
74%
Jul. 16
Few clouds
89 °F
73°F
32 °C
23°C
1mph (2km/h)
north-northwest
0in (0mm)
10 %
79%
Jul. 17
Broken clouds
92 °F
74°F
33 °C
23°C
1mph (2km/h)
north-northwest
0in (2mm)
40 %
79%

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 most draught at 0in / 0mm and July the month with the most rain around 8.6in / 217.7mm. The avg. temperature is around 79.7°F / 26.5°C, August is the hottest month in a year. January is the coolest with 41.7°F / 5.4°C avg. 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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