Most challenging: Jul to Aug (typhoon risk, heat & humidity).
Iga
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Avg high (°C)
9
10
14
20
25
29
33
34
29
22
16
11
Avg low (°C)
2
2
5
11
16
20
24
25
21
14
8
3
Rainfall (mm)
47
59
109
120
146
184
175
97
167
116
66
46
Sunshine (hrs)
148
131
156
173
185
142
166
212
152
149
132
147
Daylight (hrs)
9.8
10.6
12.0
13.5
14.9
15.7
15.4
14.4
12.8
11.2
9.9
9.3
Humidity
Dry
Dry
OK
OK
OK
Humid
Very humid
Very humid
Humid
OK
OK
Dry
Typhoon risk
·
·
·
·
·
·
Low
⚠ Mod
⚠ High
⚠ Mod
Low
·
🌧 Rainy season (tsuyu): June to July. Expect weeks of persistent drizzle, pack a compact umbrella and waterproof layer.
🌀 Typhoon season: August to October. Risk is highest in September. Check forecasts within 5 days of travel, long-range typhoon prediction is unreliable. Most typhoons pass within 24 to 48 hours.
☀ Summer heat: July to August bring high heat and humidity. Stay well hydrated, plan outdoor sightseeing for early morning, and carry a small towel.
·Kyoto and Osaka summers are notoriously hot and humid, August averages above 34 °C with oppressive humidity.
·Spring (late March to April) and autumn (November) are peak travel seasons with ideal weather and spectacular foliage.
·Typhoons tracking through the Pacific can bring heavy rain to Kansai in September.
Historical averages · Source: Japan Meteorological Agency (JMA), 1991 to 2020 normals
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