Karatsu Water Temperature

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Karatsu is a city close to Sea of Japan. August is the month with the warmest water temperature at 80.2°F / 26.8°C. The coolest month is February with an avg. water temperature of 56.7°F / 13.7°C. October is the sunniest at 0in / 0mm and July the wettest month with 8.6in / 217.7mm. The average air 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 average air temperature. mild temperate climate with hot summer would be the climate here. September, June, July, August would be the best time to visit.

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

°C

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

°F

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 hottest water temperature typically reached 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

7-day weather forecast
+9-day forecast

7-day weather forecast

Date	Weather	Max. F Min. F	Max. C Min. C	Windspeed Windir.	Precip. Rainrisk	Rel. Humidity
Dec. 21	Broken clouds	51 °F 41°F	11 °C 5°C	3mph (4km/h) west-southwest	0in (1mm) 40 %	69%
Dec. 22	Scattered clouds	43 °F 37°F	6 °C 3°C	3mph (4km/h) north-northwest	0in (0mm) 20 %	56%
Dec. 23	Scattered clouds	48 °F 35°F	9 °C 2°C	1mph (2km/h) southwest	0in (0mm) 0 %	62%
Dec. 24	Scattered clouds	49 °F 32°F	9 °C -0°C	1mph (2km/h) south-southwest	0in (0mm) 20 %	64%
Dec. 25	Few clouds	52 °F 28°F	11 °C -2°C	1mph (2km/h) south-southeast	0in (0mm) 10 %	66%
Dec. 26	Heavy rain	51 °F 41°F	11 °C 5°C	1mph (2km/h) west-southwest	1in (17mm) 90 %	79%
Dec. 27	Few clouds	45 °F 36°F	7 °C 2°C	2mph (4km/h) west-northwest	0in (0mm) 0 %	61%

+9-day forecast

Date	Weather	Max. F Min. F	Max. C Min. C	Windspeed Windir.	Precip. Rainrisk	Rel. Humidity
Dec. 28	Broken clouds	48 °F 35°F	9 °C 2°C	2mph (3km/h) west	0in (0mm) 20 %	67%
Dec. 29	Overcast clouds	46 °F 42°F	8 °C 6°C	3mph (5km/h) west-northwest	0in (0mm) 15 %	57%
Dec. 30	Overcast clouds	49 °F 38°F	10 °C 3°C	1mph (1km/h) west	0in (0mm) 20 %	64%
Dec. 31	Light shower rain	44 °F 40°F	7 °C 5°C	1mph (1km/h) south-southeast	0in (4mm) 65 %	77%
Jan. 01	Overcast clouds	49 °F 44°F	9 °C 7°C	1mph (2km/h) southwest	0in (1mm) 35 %	70%
Jan. 02	Overcast clouds	41 °F 39°F	5 °C 4°C	4mph (7km/h) northwest	0in (1mm) 40 %	57%
Jan. 03	Broken clouds	42 °F 39°F	5 °C 4°C	2mph (3km/h) northwest	0in (0mm) 20 %	57%
Jan. 04	Scattered clouds	43 °F 35°F	6 °C 1°C	1mph (2km/h) south-southwest	0in (1mm) 20 %	64%
Jan. 05	Broken clouds	42 °F 38°F	6 °C 3°C	1mph (1km/h) southwest	0in (0mm) 0 %	66%

Karatsu weather by month / climate table

°C

	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%

°F

	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 driest at 0in / 0mm and July the wettest month with 8.6in / 217.7mm. With an average 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 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

Sea of Japan