Niigata weather and climate in 2025
Day
28 °C
Night
21 °C
Sea
22 °C
Precipitation
195 mm
in month
Rainy days
17 days
in month
Daylight
14 hours
average
Sunshine
5 hours
average
Humidity
79 %
Day
28 °C
Night
21 °C
Sea
22 °C
Precipitation
195 mm
in month
Rainy days
17 days
in month
Daylight
14 hours
average
Sunshine
5 hours
average
Humidity
79 %
Overview: Niigata
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Weather overview for Niigata
Weather overview
Niigata (Japan) in general has a mild continental climate. Temperatures during the day are in the range from 5 °C (42 °F) in January to 30 °C (87 °F) in August. The driest month is May with just 13 days of rain, on the contrary, the month when it rains the most is December with 24 days of rain. The highest night temperatures could be experienced in August with 23 °C (73 °F), the lowest in February with 0 °C (32 °F).
January weather
The day temperature is on its minimum, the value of this measure is 5 °C (42 °F) in Niigata, while the night temperature descents similarly to the previous month, with its value being 0 °C (33 °F). The wet season is taking place. The beginning of the descent of the number of rainy days could be noticed, the value of this measure is 24 days, and the rainfall amount descent's start could be observed too in January. The number of sun hours (without clouds) is on its minimum, with its value of 2 hours.
February weather
The beginning of the rise of the day temperature could be noticed, with its value of 6 °C (42 °F) in Niigata, while the night temperature is on its minimum in February. The descent of the number of rainy days can be observed, the value of this measure is 20 days, and the rainfall amount continues to descent too, with its value of 128 mm (5.05 in). The wet season continues. The beginning of the rise of the number of sun hours (without clouds) could be noticed in this month.
March weather
The wet season continues this month in Niigata. The descent of the number of rainy days can be observed, its value is 19 days, and the rainfall amount descents similarly to the previous month as well, with its value being 117 mm (4.61 in). The night temperature rise's start could be observed, its value is 2 °C (36 °F), while the day temperature rises similarly to the previous month, with its value of 10 °C (49 °F). The number of sun hours (without clouds) rises similarly to the previous month.
April weather
The number of rainy days descents similarly to the previous month, with its value being 14 days in Niigata, while the rainfall amount is on its minimum, the value of this measure is 97 mm (3.82 in). The day temperature continues to rise, its value is 16 °C (61 °F), and the night temperature continues to rise as well, its value is 7 °C (45 °F). The number of sun hours (without clouds) rises similarly to the previous month, its value is 6 hours. The humidity reaches its minimum, the value of this measure is 68 %.
May weather
The tourist season is at its beginning in Niigata. The day temperature rises similarly to the previous month, and the night temperature continues to rise as well, the value of this measure is 12 °C (54 °F). The number of rainy days is on its minimum, while the rainfall amount starts to rise, the value of this measure is 103 mm (4.05 in). The number of sun hours (without clouds) is on its maximum, its value is 7 hours.
June weather
The day temperature rises similarly to the previous month, the value of this measure is 24 °C (75 °F) in Niigata, and the rise of the night temperature can be observed as well, the value of this measure is 17 °C (62 °F). The tourist season continues. The number of rainy days starts to rise, with its value being 13 days, while the rise of the rainfall amount can be observed, with its value of 127 mm (4.98 in). The beginning of the descent of the number of sun hours (without clouds) could be noticed, its value is 5 hours.
July weather
There is pending tourist season this month in Niigata. The number of rainy days continues to rise, the value of this measure is 17 days, and the rainfall amount rises similarly to the previous month too, its value is 195 mm (7.66 in). The day temperature rises similarly to the previous month, its value is 28 °C (82 °F), and the night temperature rises similarly to the previous month too, the value of this measure is 21 °C (70 °F). The maximum of the humidity can be noticed, with its value being 79 %.
August weather
The tourist season is close to its peak in Niigata. The maximum of the day temperature is observable, its value is 30 °C (87 °F), and the night temperature reaches its maximum as well, the value of this measure is 23 °C (73 °F). The rainfall amount starts to descent, with its value of 137 mm (5.37 in), and the number of rainy days descent's start could be observed as well, with its value of 14 days. The number of sun hours (without clouds) rise's start could be observed in this month.
September weather
There is pending tourist season in Niigata. The beginning of the rise of the number of rainy days could be noticed, with its value of 16 days, and the beginning of the rise of the rainfall amount could be noticed too, with its value of 157 mm (6.19 in). The day temperature descent's start could be observed, with its value being 26 °C (79 °F), and the night temperature descent's start could be observed too, with its value of 19 °C (65 °F). The number of sun hours (without clouds) descent's start could be observed, with its value being 5 hours.
October weather
The descent of the day temperature can be observed, the value of this measure is 20 °C (68 °F) in Niigata, and the night temperature descents similarly to the previous month too, with its value of 13 °C (55 °F). The rainfall amount rises similarly to the previous month, its value is 168 mm (6.63 in). The ongoing tourist season is noticeable.
November weather
The descent of the day temperature can be observed, the value of this measure is 14 °C (57 °F) in Niigata, and the night temperature descents similarly to the previous month as well, the value of this measure is 7 °C (44 °F). The beginning of the rise of the number of rainy days could be noticed, its value is 20 days, while the rainfall amount rises similarly to the previous month, its value is 203 mm (8.01 in). The wet season slowly starts this month. The number of sun hours (without clouds) starts to descent in this month.
December weather
The day temperature descents similarly to the previous month, the value of this measure is 9 °C (47 °F) in Niigata, and the night temperature continues to descent as well, with its value of 3 °C (37 °F). The maximum of the number of rainy days can be noticed, with its value being 24 days, and the maximum of the rainfall amount can be noticed too, the value of this measure is 239 mm (9.41 in). The ongoing wet season is noticeable. The number of sun hours (without clouds) descents similarly to the previous month, its value is 2 hours.
FAQs
What is the night temperature in Niigata in April?
The average night temperature in Niigata in April is 7 °C (45 °F). The nights will be cool, layers of clothes will be needed for evening and morning walks, the hotel should be equipped with heating. This value is 5 °C (41 °F) higher than last month.
Is May part of the wet season in Niigata?
No, there is no wet season in May in Niigata - you can expect 13 days of rain during the month.
What is the temperature in Niigata during the day in June?
In Niigata in June, the average daily temperatures will be 24 °C (75 °F). A comfortable temperature for most people, where it is neither too cold nor too hot, and a large number of activities can be carried out comfortably, including sunbathing by the water. This value is 4 °C (38 °F) higher than last month. Lighter clothing will be suitable - shorts, skirts, t-shirts, jackets; a light sweater and long trousers may also be useful.
Is it hot in July in Niigata?
In July in Niigata, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.
How many rainy days can I expect in Niigata in August?
There are 14 days, which are rainy in Niigata in August, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 3.4 days of the week, or in general - 48 % days. This is a decrease of 3 days compared to the last month. That means a 15 % decrease in the value.
Is September a good month to visit Niigata?
September is a good month to visit Niigata. The daily temperatures in this month reach pleasant 26 °C (79 °F). The seawater temperature reaches ideal 25 °C (77 °F). At night, temperatures hover around a pleasant 19 °C (65 °F).
What is the sea temperature in Niigata in October?
In October in Niigata expect the sea to be warm at 21 °C (70 °F). The sea at this temperature is quite cold, but it is already possible to stay in it for a long time and it is pleasantly refreshing on hot, steamy days. The value is lower by 3 °C (38 °F) than in the previous month.
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