NaganoJapan · Asia · August

August climate

MountainCultureHiking

August in Nagano

Japan · Asia

August is among the hottest months, with some of the year’s highest rainfall totals and muggy conditions.

Some tradeoffs

Daytime high

87°F

Lows around 72°F

Rain

Rain most days

Sun

6.5 h/day

Air feel

Very humid

When to visit

Month-by-month fit

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Temperature

Hot by day, warm at night.

87°Ftypical August high

Typical range

Precipitation

It rains on most days, with a mix of brief and longer spells. About 20 wet days, more than in most months.

65%wet-day frequency

Precip amountWet-day chanceSnowfall

Sunshine

Cloudier spells limit sunshine.

6.5 hAugust sunshine

Heat & humidity by month

Very humid air is a major factor this month.

83%August Heat feel

Easy airWarm airHot airHumid airVery humid air

Hourly temperature pattern

In August, afternoons feel about 92° and nights feel near 79°.

FreezingVery coldColdCoolComfortableWarmHotNight hours

Clear sky

Mostly cloudy skies this month.

30%August Clear sky

Clear skyCloud

Wind pattern

Calm winds are typical in August.

3 mphAugust Calm

More detailIncludes daypart comfort

Typical August day

August late afternoons are around 84°F, easing to about 78°F in early evening.

Avg temp Typical range

Morning82°F

Feels 89°F

Rain33%

Cloud64%

Humid airVery high

Sun intensityModerate

Midday86°F

Feels 92°F

Rain54%

Cloud67%

Humid airVery high

Sun intensityStrong

Late afternoon84°F

Feels 91°F

Rain51%

Cloud70%

Humid airVery high

Sun intensityModerate

Early evening78°F

Feels 85°F

Rain26%

Cloud71%

Humid airVery high

Sun intensityMinimal

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Data table

View month-by-month numbers

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	40	27	5.8	23	4.2	76
Feb	42	29	4.8	18	4.9	74
Mar	49	35	5.4	18	5.7	71
Apr	62	44	4.8	15	6.7	69
May	73	55	5.6	15	7.0	70
Jun	79	64	7.0	19	5.8	76
Jul	85	71	9.4	23	5.7	81
Aug	87	72	7.2	20	6.5	79
Sep	80	65	7.3	18	5.2	81
Oct	68	53	6.2	15	5.0	80
Nov	57	42	4.8	17	4.8	79
Dec	45	32	5.6	21	4.3	77

Similar climates

Want a side-by-side climate view? Compare Nagano with Kitzbühel.

Climate data notePlanning guidance, not a forecast

Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.

Sunshine: reviewed station-normal observations.

Local microclimates can vary by beach, neighborhood, trail, or elevation.

Last updated: Jun 1, 2026

Data & methodology

Month

High°F

Low°F

Rainin

Wet days

Sunh

Humidity%

Jan

5.8

4.2

Feb

4.8

4.9

Mar

5.4

5.7

Apr

4.8

6.7

May

5.6

7.0

Jun

7.0

5.8

Jul

9.4

5.7

Aug

7.2

6.5

Sep

7.3

5.2

Oct

6.2

5.0

Nov

4.8

Dec

5.6

4.3

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	40	27	5.8	23	4.2	76
Feb	42	29	4.8	18	4.9	74
Mar	49	35	5.4	18	5.7	71
Apr	62	44	4.8	15	6.7	69
May	73	55	5.6	15	7.0	70
Jun	79	64	7.0	19	5.8	76
Jul	85	71	9.4	23	5.7	81
Aug	87	72	7.2	20	6.5	79
Sep	80	65	7.3	18	5.2	81
Oct	68	53	6.2	15	5.0	80
Nov	57	42	4.8	17	4.8	79
Dec	45	32	5.6	21	4.3	77

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	40	27	5.8	23	4.2	76
Feb	42	29	4.8	18	4.9	74
Mar	49	35	5.4	18	5.7	71
Apr	62	44	4.8	15	6.7	69
May	73	55	5.6	15	7.0	70
Jun	79	64	7.0	19	5.8	76
Jul	85	71	9.4	23	5.7	81
Aug	87	72	7.2	20	6.5	79
Sep	80	65	7.3	18	5.2	81
Oct	68	53	6.2	15	5.0	80
Nov	57	42	4.8	17	4.8	79
Dec	45	32	5.6	21	4.3	77

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	40	27	5.8	23	4.2	76
Feb	42	29	4.8	18	4.9	74
Mar	49	35	5.4	18	5.7	71
Apr	62	44	4.8	15	6.7	69
May	73	55	5.6	15	7.0	70
Jun	79	64	7.0	19	5.8	76
Jul	85	71	9.4	23	5.7	81
Aug	87	72	7.2	20	6.5	79
Sep	80	65	7.3	18	5.2	81
Oct	68	53	6.2	15	5.0	80
Nov	57	42	4.8	17	4.8	79
Dec	45	32	5.6	21	4.3	77

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	40	27	5.8	23	4.2	76
Feb	42	29	4.8	18	4.9	74
Mar	49	35	5.4	18	5.7	71
Apr	62	44	4.8	15	6.7	69
May	73	55	5.6	15	7.0	70
Jun	79	64	7.0	19	5.8	76
Jul	85	71	9.4	23	5.7	81
Aug	87	72	7.2	20	6.5	79
Sep	80	65	7.3	18	5.2	81
Oct	68	53	6.2	15	5.0	80
Nov	57	42	4.8	17	4.8	79
Dec	45	32	5.6	21	4.3	77

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	40	27	5.8	23	4.2	76
Feb	42	29	4.8	18	4.9	74
Mar	49	35	5.4	18	5.7	71
Apr	62	44	4.8	15	6.7	69
May	73	55	5.6	15	7.0	70
Jun	79	64	7.0	19	5.8	76
Jul	85	71	9.4	23	5.7	81
Aug	87	72	7.2	20	6.5	79
Sep	80	65	7.3	18	5.2	81
Oct	68	53	6.2	15	5.0	80
Nov	57	42	4.8	17	4.8	79
Dec	45	32	5.6	21	4.3	77

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	40	27	5.8	23	4.2	76
Feb	42	29	4.8	18	4.9	74
Mar	49	35	5.4	18	5.7	71
Apr	62	44	4.8	15	6.7	69
May	73	55	5.6	15	7.0	70
Jun	79	64	7.0	19	5.8	76
Jul	85	71	9.4	23	5.7	81
Aug	87	72	7.2	20	6.5	79
Sep	80	65	7.3	18	5.2	81
Oct	68	53	6.2	15	5.0	80
Nov	57	42	4.8	17	4.8	79
Dec	45	32	5.6	21	4.3	77