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August weather forecast in Nagano

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

27 July, sun

	681 mmHg		81%
	2 m/s

27 July, Sunday. day, 26°; night, 19°; rain

28 July, mon

	681 mmHg		83%
	1.7 m/s

28 July, Monday. day, 26°; night, 19°; rain

29 July, tue

	680 mmHg		82%
	1.9 m/s

29 July, Tuesday. day, 26°; night, 19°; rain

30 July, wed

	681 mmHg		82%
	1.8 m/s

30 July, Wednesday. day, 27°; night, 19°; clear

31 July, thu

	681 mmHg		80%
	1.8 m/s

31 July, Thursday. day, 27°; night, 19°; clear

1 August, fri

	681 mmHg		79%
	1.8 m/s

1 August, Friday. day, 27°; night, 19°; rain

2 August, sat

	682 mmHg		79%
	1.9 m/s

2 August, Saturday. day, 28°; night, 19°; partly cloudy

3 August, sun

	682 mmHg		79%
	1.9 m/s

3 August, Sunday. day, 28°; night, 20°; clear

4 August, mon

	682 mmHg		80%
	1.8 m/s

4 August, Monday. day, 28°; night, 20°; clear

5 August, tue

	681 mmHg		80%
	1.9 m/s

5 August, Tuesday. day, 28°; night, 20°; clear

6 August, wed

	681 mmHg		81%
	1.8 m/s

6 August, Wednesday. day, 28°; night, 20°; rain

7 August, thu

	681 mmHg		81%
	1.9 m/s

7 August, Thursday. day, 27°; night, 19°; rain

8 August, fri

	680 mmHg		82%
	2 m/s

8 August, Friday. day, 27°; night, 20°; rain

9 August, sat

	680 mmHg		81%
	2.2 m/s

9 August, Saturday. day, 27°; night, 19°; rain

10 August, sun

	680 mmHg		81%
	2.09 m/s

10 August, Sunday. day, 27°; night, 20°; partly cloudy

11 August, mon

	680 mmHg		82%
	1.8 m/s

11 August, Monday. day, 27°; night, 19°; rain

12 August, tue

	680 mmHg		84%
	1.7 m/s

12 August, Tuesday. day, 26°; night, 19°; partly cloudy

13 August, wed

	680 mmHg		84%
	1.9 m/s

13 August, Wednesday. day, 26°; night, 19°; rain

14 August, thu

	680 mmHg		84%
	2 m/s

14 August, Thursday. day, 26°; night, 19°; rain

15 August, fri

	680 mmHg		84%
	2.09 m/s

15 August, Friday. day, 26°; night, 19°; rain

16 August, sat

	680 mmHg		85%
	2 m/s

16 August, Saturday. day, 26°; night, 19°; rain

17 August, sun

	681 mmHg		85%
	2 m/s

17 August, Sunday. day, 25°; night, 19°; rain

18 August, mon

	682 mmHg		82%
	1.9 m/s

18 August, Monday. day, 26°; night, 19°; clear

19 August, tue

	682 mmHg		81%
	1.8 m/s

19 August, Tuesday. day, 27°; night, 19°; rain

20 August, wed

	681 mmHg		82%
	1.8 m/s

20 August, Wednesday. day, 26°; night, 19°; rain

21 August, thu

	681 mmHg		84%
	1.8 m/s

21 August, Thursday. day, 26°; night, 19°; rain

22 August, fri

	681 mmHg		84%
	1.9 m/s

22 August, Friday. day, 26°; night, 19°; rain

23 August, sat

	681 mmHg		83%
	2 m/s

23 August, Saturday. day, 26°; night, 18°; rain

24 August, sun

	681 mmHg		83%
	1.9 m/s

24 August, Sunday. day, 25°; night, 18°; rain

25 August, mon

	681 mmHg		83%
	1.9 m/s

25 August, Monday. day, 25°; night, 18°; rain

26 August, tue

	681 mmHg		83%
	1.9 m/s

26 August, Tuesday. day, 25°; night, 18°; rain

27 August, wed

	681 mmHg		83%
	1.9 m/s

27 August, Wednesday. day, 25°; night, 18°; rain

28 August, thu

	681 mmHg		84%
	1.9 m/s

28 August, Thursday. day, 25°; night, 18°; rain

29 August, fri

	681 mmHg		84%
	1.9 m/s

29 August, Friday. day, 25°; night, 18°; rain

30 August, sat

	680 mmHg		85%
	2 m/s

30 August, Saturday. day, 24°; night, 18°; rain

31 August, sun

	680 mmHg		83%
	2.09 m/s

31 August, Sunday. day, 25°; night, 18°; rain

1 September, mon

	681 mmHg		84%
	1.9 m/s

1 September, Monday. day, 24°; night, 17°; rain

2 September, tue

	681 mmHg		83%
	2.09 m/s

2 September, Tuesday. day, 25°; night, 18°; rain

3 September, wed

	681 mmHg		83%
	2.2 m/s

3 September, Wednesday. day, 24°; night, 17°; rain

4 September, thu

	681 mmHg		85%
	2.2 m/s

4 September, Thursday. day, 24°; night, 17°; rain

5 September, fri

	681 mmHg		84%
	2.09 m/s

5 September, Friday. day, 24°; night, 17°; rain

6 September, sat

	680 mmHg		85%
	2.3 m/s

6 September, Saturday. day, 23°; night, 17°; rain

Average data for 10 years

Nagano August

4

sunny days

24

days with precipitation

13

cloudy days

4 sunny days; 24 days with precipitation; 13 cloudy days;

82

%

air humidity

1.1

m/s

WindS

311

mm of precipitation

(11% of annual average)

air humidity 82%; 311 millimeters of precipitation (11% of annual average); Wind southerly 1.1 Meters per second

Weather graphs for August

TemperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

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S

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S

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S

S

S

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S

S

S

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SE

S

S

SE

SE

S

1

Average data for 10 years

2

3

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31

Daytime temperature

Night-time temperature

Cities near you

Tokyo
Osaka
Kyoto
Toyama
Hakone
Sendai
Nagoya
Fuji
Akita

Cities with similar weather in August

Kemer
Baku
Athens
Madrid
Dushanbe
Samarkand
Gudauta
Bar
Beldibi

The weather forecast for August 2025 is based on historical data from the past 10 years.

August in Nagano is the warmest month of the year. In August, the weather in Nagano is typically warm. Average daily high temperature in August is about 26 degrees above zero. On average, Nagano has 24 rainy, 4 sunny, and 3 partly cloudy days in August. The rains are usually heavy. August as well as March, April, May, and June is considered the most uncomfortable time to visit Nagano.

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