Joetsu Water Temperature

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Joetsu is a city close to Sea of Japan. August is the month with the hottest water temperature at 80.1°F / 26.7°C. The coldest month is March with an ø water temperature of 49.1°F / 9.5°C. May is the month with the lowest precipitation of 1.2in / 31.5mm and January with the highest precipitation in a year with 11.1in / 282mm. The avg. air temperature is around 76.8°F / 24.9°C, August is the month with the highest temperature. January is the coolest with 32.2°F / 0.1°C average air temperature. August, September, June, July would be the best time to visit. mild temperate climate with hot summer would be the climate here.

Joetsu Summary

Description	Value
Current water temperature	/
Warmest Month Water Temperature:	August with 26.7°C / 80.1°F
Coldest Month Water Temperature:	March with 9.5°C / 49.1°F
Warmest Month Air Temperature:	August with 24.9°C / 76.8°F
Coldest Month Air Temperature:	January with 0.1°C / 32.2°F
Wettest Month:	January with 282mm / 11.1in
Driest Month:	May with 31.5mm / 1.2in
Highest Humidity	July with 85.2%
Lowest Humidity	May with 74.8%
Best Time to Visit:	August, September, June, July
Climate Classification	mild temperate climate with hot summer

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Joetsu 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	13.3	12.1	11
February	11	10.2	9.7
March	9.9	9.5	9.3
April	12.2	10.6	9.5
May	17.1	14.4	12.4
June	21.3	19.4	17
July	25.7	23.4	21.4
August	26.9	26.5	25.8
September	26.2	24.9	23.3
October	23.2	21.5	19.9
November	19.8	18.2	16.6
December	16.5	14.9	13.4

°F

Sea of Japan water temperature by month

	Max. Water Temperature (°F)	ø. Water Temperature (°F)	Min. Water Temperature (°F)
January	55.9	53.8	51.8
February	51.8	50.4	49.5
March	49.8	49.1	48.7
April	54	51.1	49.1
May	62.8	57.9	54.3
June	70.3	66.9	62.6
July	78.3	74.1	70.5
August	80.4	79.7	78.4
September	79.2	76.8	73.9
October	73.8	70.7	67.8
November	67.6	64.8	61.9
December	61.7	58.8	56.1

The highest water temperature will be reached in August with around 80.1°F / 26.7°C. The lowest in March with an average water temperature of 49.1°F / 9.5°C.

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Joetsu 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
Mar. 17	Scattered clouds	50 °F 33°F	10 °C 1°C	1mph (2km/h) south	0in (0mm) 0 %	70%
Mar. 18	Broken clouds	58 °F 32°F	15 °C -0°C	1mph (1km/h) south-southeast	0in (1mm) 35 %	70%
Mar. 19	Mix snow/rain	48 °F 40°F	9 °C 5°C	1mph (2km/h) west-northwest	1in (14mm) 85 %	80%
Mar. 20	Mix snow/rain	55 °F 36°F	13 °C 2°C	2mph (3km/h) west-southwest	0in (2mm) 50 %	64%
Mar. 21	Clear Sky	52 °F 33°F	11 °C 0°C	1mph (2km/h) southwest	0in (1mm) 35 %	51%
Mar. 22	Broken clouds	52 °F 32°F	11 °C 0°C	1mph (2km/h) southeast	0in (0mm) 0 %	53%
Mar. 23	Light shower rain	50 °F 40°F	10 °C 5°C	1mph (2km/h) southwest	0in (2mm) 55 %	67%

+9-day forecast

Date	Weather	Max. F Min. F	Max. C Min. C	Windspeed Windir.	Precip. Rainrisk	Rel. Humidity
Mar. 24	Mix snow/rain	44 °F 36°F	7 °C 2°C	3mph (4km/h) northwest	0in (4mm) 75 %	73%
Mar. 25	Overcast clouds	50 °F 34°F	10 °C 1°C	1mph (1km/h) south-southwest	0in (0mm) 0 %	62%
Mar. 26	Scattered clouds	54 °F 39°F	12 °C 4°C	1mph (2km/h) southeast	0in (0mm) 0 %	64%
Mar. 27	Few clouds	52 °F 45°F	11 °C 7°C	1mph (1km/h) east-southeast	0in (0mm) 0 %	61%
Mar. 28	Overcast clouds	59 °F 49°F	15 °C 10°C	1mph (1km/h) south	0in (0mm) 0 %	48%
Mar. 29	Moderate rain	55 °F 46°F	13 °C 8°C	2mph (3km/h) south	0in (12mm) 85 %	71%
Mar. 30	Overcast clouds	55 °F 42°F	13 °C 6°C	1mph (2km/h) west-southwest	0in (1mm) 35 %	88%
Mar. 31	Broken clouds	46 °F 39°F	8 °C 4°C	1mph (1km/h) west	0in (0mm) 10 %	77%
Apr. 01	Few clouds	51 °F 42°F	11 °C 6°C	0mph (1km/h) west-southwest	0in (0mm) 20 %	56%

Joetsu weather by month / climate table

°C

	Max. Temperature °C	ø. Temperature °C	Min. Temperature (°C)	Precip. (mm)	Rainy Days (d)	Rel. Humidity (%)
January	4.1	0.1	-3.8	282	27	83.1%
February	6.5	0.4	-4.2	159.4	22	81.5%
March	10.5	3.3	-2.7	95.9	21	78.2%
April	18.2	9.4	1.5	50.5	7	75.1%
May	23	15.6	8.2	31.5	3	74.8%
June	26.1	19.9	12.1	100.8	13	79.2%
July	29	23.6	18.2	258.9	23	85.2%
August	30.6	24.9	19.8	147	19	81.9%
September	28.3	21	14.3	156.6	14	83.1%
October	22.4	14.9	7.8	105.7	0	81.6%
November	17	8.9	3	131.9	17	82.7%
December	10.5	3	-2.6	235	25	84.2%

°F

	Max. Temperature °F	ø. Temperature °F	Min. Temperature (°F)	Precip. (in)	Rainy Days (d)	Rel. Humidity (%)
January	39.4	32.2	25.2	11.1	27	83.1%
February	43.7	32.7	24.4	6.3	22	81.5%
March	50.9	37.9	27.1	3.8	21	78.2%
April	64.8	48.9	34.7	2	7	75.1%
May	73.4	60.1	46.8	1.2	3	74.8%
June	79	67.8	53.8	4	13	79.2%
July	84.2	74.5	64.8	10.2	23	85.2%
August	87.1	76.8	67.6	5.8	19	81.9%
September	82.9	69.8	57.7	6.2	14	83.1%
October	72.3	58.8	46	4.2	0	81.6%
November	62.6	48	37.4	5.2	17	82.7%
December	50.9	37.4	27.3	9.3	25	84.2%

May is the most draught at 1.2in / 31.5mm and January the month with the most rain around 11.1in / 282mm. The avg. temperature is around 76.8°F / 24.9°C, August is the hottest month in a year. January is the coolest with 32.2°F / 0.1°C avg. temperature.

Activities & POI in Joetsu

Type of Activity	List
Attraction	上越市立水族博物館

Sea of Japan