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Island in Okinawa, Japan

Ishigaki weather by month and the best time to visit

Updated October 2026Sources
Apr–May, Jul, Sep–OctBest time to visit

When to go to Ishigaki

Apr–May and Oct are warm and good for water. Mid-May to June is rainy, Jul–Sep is hot and typhoon-prone; winter is mild but windy.

Ishigaki weather by month

Average daily high, rainfall and conditions.

PleasantHotRainyCool or coldBest months
15°20°25°30°JFMAMJJASOND
Average highAverage lowRainfall

Monthly averages

MonthHighLowRainHumidityConditions
January21°C70°F19°C66°F73 mm77%Pleasant
February21°C70°F20°C67°F69 mm79%Pleasant
March22°C72°F20°C68°F80 mm79%Pleasant
April24°C75°F22°C72°F106 mm82%Pleasant
May26°C80°F25°C77°F161 mm84%Rainy
June28°C83°F28°C82°F182 mm86%Rainy
July29°C85°F29°C83°F120 mm83%Pleasant
August29°C85°F29°C83°F199 mm82%Rainy
September29°C83°F28°C82°F195 mm81%Rainy
October27°C80°F26°C78°F125 mm78%Pleasant
November25°C77°F24°C75°F99 mm78%Pleasant
December22°C72°F21°C69°F82 mm76%Pleasant

Best months across Japan

PlaceBest monthsWarmest month
TokyoMar–May, Oct–NovAug (30°C)
KyotoMar–May, Oct–NovAug (31°C)
OsakaMar–May, Oct–NovAug (32°C)
HiroshimaMar–May, Oct–NovAug (32°C)
NaraMar–May, Oct–NovAug (31°C)
SapporoFeb, Jun–SepAug (26°C)
OkinawaApr–Jun, Oct–NovAug (30°C)
HakoneApr–May, Oct–DecAug (24°C)
FukuokaMar–May, Oct–NovAug (32°C)
KawaguchikoOct–FebAug (26°C)
NisekoJul–Aug, Dec–MarAug (24°C)
YokohamaMar–May, Oct–NovAug (31°C)
KanazawaApr–May, Oct–NovAug (31°C)
TakayamaApr–May, Oct–NovAug (29°C)
NagoyaMar–May, Oct–NovAug (31°C)
NikkoMay, Jul–Aug, Oct–NovAug (28°C)
KamakuraMar–May, Oct–NovAug (31°C)
KobeMar–May, Oct–NovAug (30°C)
HakubaJan–Feb, Jul–SepAug (28°C)
IshigakiApr–May, Jul, Sep–OctJul (29°C)
NagasakiMar–May, Oct–NovAug (31°C)
Shirakawa-goFeb, May, Oct–NovAug (28°C)
MiyakojimaApr–Jun, Sep–OctJul (29°C)
HakodateJun–OctAug (25°C)
OtaruFeb, Jun–SepAug (26°C)
BeppuMar–May, Oct–NovAug (31°C)
MatsumotoApr–May, Sep–NovAug (29°C)
KoyasanApr–May, Oct–NovAug (27°C)
FuranoJan–Feb, Jul–AugAug (25°C)
SendaiApr–May, Sep–NovAug (29°C)

Quick answers

What is the best month to visit Ishigaki?

Apr–May, Jul, Sep–Oct. Apr–May and Oct are warm and good for water. Mid-May to June is rainy, Jul–Sep is hot and typhoon-prone; winter is mild but windy.

When is the rainy season in Ishigaki?

Rain peaks in August with about 199 mm. Months with 150 mm or more: May–Jun, Aug–Sep.

What is the hottest month in Ishigaki?

July, with average highs of 29°C (85°F).

How cold does Ishigaki get?

The coolest nights are in January, averaging 19°C (66°F).

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Sources

Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.