Zao OnsenJapan · Asia · September

September climate

Nature

September in Zao Onsen

Japan · Asia

Mild days and some sun. Heavier storm-season rain is the main drawback.

Some tradeoffs

Daytime high

71°F

Lows around 58°F

Rain

Frequent rain

Sun

7.5 h/day

Air feel

Comfortable

When to visit

Month-by-month fit

Best

Switch month

Temperature

Pleasant by day, brisk at night.

71°Ftypical September high

Typical range

Precipitation

Rain is frequent. About 14 wet days this month.

47%wet-day frequency

Precip amountWet-day chanceSnowfall

Sunshine

Cloudier spells limit sunshine.

7.3 hSeptember sunshine

Heat & humidity by month

ComfortableSeptember

Easy airWarm airHot airHumid air

Hourly temperature pattern

In September, afternoons feel about 66° and nights feel near 56°.

FrigidFreezingVery coldColdCoolComfortableWarmNight hours

Clear sky

Mostly cloudy skies this month.

22%September Clear sky

Clear skyCloud

Wind pattern

Calm winds are typical in September.

4 mphSeptember Calm

More detailIncludes daypart comfort

Typical September day

September late afternoons are around 66°F, easing to about 61°F in early evening.

Avg temp Typical range

Morning64°F

Rain29%

Cloud74%

Humid airLow

Sun intensityModerate

Midday68°F

Rain34%

Cloud75%

Humid airLow

Sun intensityModerate

Late afternoon66°F

Rain26%

Cloud72%

Humid airLow

Sun intensityLow

Early evening61°F

Rain17%

Cloud70%

Humid airLow

Sun intensityMinimal

Best window

Data table

View month-by-month numbers

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	30	18	3.2	18	7.7	77
Feb	32	19	2.9	13	8.2	74
Mar	43	27	3.9	14	9.0	70
Apr	55	37	3.6	9	9.4	68
May	62	45	4.9	13	9.2	72
Jun	70	55	5.1	14	8.4	79
Jul	77	64	6.0	18	7.5	82
Aug	78	65	6.6	20	8.4	82
Sep	71	58	5.9	14	7.3	83
Oct	58	44	4.3	12	7.7	80
Nov	48	33	3.1	12	7.1	78
Dec	35	24	4.1	22	7.2	78

Similar climates

Want a side-by-side climate view? Compare Zao Onsen with Nikko.

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: source type is not yet identified at metric level.

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

Last updated: Jul 31, 2026

Data & methodology

Month

High°F

Low°F

Rainin

Wet days

Sunh

Humidity%

Jan

3.2

7.7

Feb

2.9

8.2

Mar

3.9

9.0

Apr

3.6

9.4

May

4.9

9.2

Jun

5.1

8.4

Jul

6.0

7.5

Aug

6.6

8.4

Sep

5.9

7.3

Oct

4.3

7.7

Nov

3.1

7.1

Dec

4.1

7.2

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	30	18	3.2	18	7.7	77
Feb	32	19	2.9	13	8.2	74
Mar	43	27	3.9	14	9.0	70
Apr	55	37	3.6	9	9.4	68
May	62	45	4.9	13	9.2	72
Jun	70	55	5.1	14	8.4	79
Jul	77	64	6.0	18	7.5	82
Aug	78	65	6.6	20	8.4	82
Sep	71	58	5.9	14	7.3	83
Oct	58	44	4.3	12	7.7	80
Nov	48	33	3.1	12	7.1	78
Dec	35	24	4.1	22	7.2	78

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	30	18	3.2	18	7.7	77
Feb	32	19	2.9	13	8.2	74
Mar	43	27	3.9	14	9.0	70
Apr	55	37	3.6	9	9.4	68
May	62	45	4.9	13	9.2	72
Jun	70	55	5.1	14	8.4	79
Jul	77	64	6.0	18	7.5	82
Aug	78	65	6.6	20	8.4	82
Sep	71	58	5.9	14	7.3	83
Oct	58	44	4.3	12	7.7	80
Nov	48	33	3.1	12	7.1	78
Dec	35	24	4.1	22	7.2	78

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	30	18	3.2	18	7.7	77
Feb	32	19	2.9	13	8.2	74
Mar	43	27	3.9	14	9.0	70
Apr	55	37	3.6	9	9.4	68
May	62	45	4.9	13	9.2	72
Jun	70	55	5.1	14	8.4	79
Jul	77	64	6.0	18	7.5	82
Aug	78	65	6.6	20	8.4	82
Sep	71	58	5.9	14	7.3	83
Oct	58	44	4.3	12	7.7	80
Nov	48	33	3.1	12	7.1	78
Dec	35	24	4.1	22	7.2	78

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	30	18	3.2	18	7.7	77
Feb	32	19	2.9	13	8.2	74
Mar	43	27	3.9	14	9.0	70
Apr	55	37	3.6	9	9.4	68
May	62	45	4.9	13	9.2	72
Jun	70	55	5.1	14	8.4	79
Jul	77	64	6.0	18	7.5	82
Aug	78	65	6.6	20	8.4	82
Sep	71	58	5.9	14	7.3	83
Oct	58	44	4.3	12	7.7	80
Nov	48	33	3.1	12	7.1	78
Dec	35	24	4.1	22	7.2	78

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	30	18	3.2	18	7.7	77
Feb	32	19	2.9	13	8.2	74
Mar	43	27	3.9	14	9.0	70
Apr	55	37	3.6	9	9.4	68
May	62	45	4.9	13	9.2	72
Jun	70	55	5.1	14	8.4	79
Jul	77	64	6.0	18	7.5	82
Aug	78	65	6.6	20	8.4	82
Sep	71	58	5.9	14	7.3	83
Oct	58	44	4.3	12	7.7	80
Nov	48	33	3.1	12	7.1	78
Dec	35	24	4.1	22	7.2	78

Month	High°F	Low°F	Rainin	Wet days	Sunh	Humidity%
Jan	30	18	3.2	18	7.7	77
Feb	32	19	2.9	13	8.2	74
Mar	43	27	3.9	14	9.0	70
Apr	55	37	3.6	9	9.4	68
May	62	45	4.9	13	9.2	72
Jun	70	55	5.1	14	8.4	79
Jul	77	64	6.0	18	7.5	82
Aug	78	65	6.6	20	8.4	82
Sep	71	58	5.9	14	7.3	83
Oct	58	44	4.3	12	7.7	80
Nov	48	33	3.1	12	7.1	78
Dec	35	24	4.1	22	7.2	78