When is the best time to visit Ishigaki, Japan?

In Ideal Weather mode, the best months to visit Ishigaki are April, August, July, November. April is the single peak month with an Ideal Weather score of 7.9/10 based on temperature, rainfall, humidity, daylight and days with 6+ hours of sunshine.

What is the weather like in Ishigaki year-round?

Ishigaki has a climate profile suited to beach and coastal travel. Average monthly temperatures range from 19°C in January to 29°C in July, with Ideal Weather scores between 5.8 and 7.9 out of 10.

Which months should I avoid in Ishigaki?

The lowest Ideal Weather-scoring months in Ishigaki are January (5.8/10), February (6.2/10), December (6.2/10). These months typically combine less comfortable temperatures, higher rainfall or fewer days with 6+ hours of sunshine.

When is the rainy season in Ishigaki?

May is the wettest month in Ishigaki, averaging about 289 mm of rainfall. January is the driest, at roughly 107 mm.

Which is the sunniest month in Ishigaki?

August sees the most sun in Ishigaki, with about 29 days with 6+ hours of sunshine on average - ideal for outdoor plans.

Is Ishigaki a good destination for beach and coastal travel?

Ishigaki is well suited to beach and coastal travel. Its highest Ideal Weather window (April, August, July, November) aligns with the conditions travelers usually look for in this style of trip.

How is the bestime.to score for Ishigaki calculated?

Each month receives an Ideal Weather score from 0-10 using ERA5 climate normals for Ishigaki: temperature comfort, precipitation, humidity, daylight hours, and days with 6+ hours of sunshine - weighted for beach and coastal travel.

Best Time to Visit Ishigaki: April, August, July

January in Ishigaki: mixed conditions, plan around the weather

Trade-offs · 5.8/10

January averages 19°C (66°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.

At 107 mm this is a genuinely wet month: about 17 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.

It scores 5.8/10 here, 12th of 12 months, against 7.9/10 in the destination's best month.

Figure on low-season pricing, with crowds are light for this destination.

Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.

Flexible dates? April scores 2.1 points higher here — enough to change the trip.

February in Ishigaki — workable with trade-offs

Trade-offs · 6.2/10

February averages 20°C (67°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

At 108 mm this is a genuinely wet month: about 17 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.

It scores 6.2/10 here, 10th of 12 months, against 7.9/10 in the destination's best month.

Figure on low-season pricing, with crowds are light for this destination.

Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella.

Flexible dates? April scores 1.7 points higher here — enough to change the trip.

March in Ishigaki: strong conditions, 5th of 12

Good · 7.2/10

With 21°C (70°F) on average, March delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.

132 mm of rain makes this a wet month here, though with about 22 days with 6+ hours of sunshine there is still bright weather between the fronts.

That is 7.2/10 on the same scale — 5th of 12 months, versus 7.9/10 for the best month here.

Expect mid-season pricing, and crowds are moderate.

Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella.

April in Ishigaki — the year's strongest window

Best window · 7.9/10

April averages 23°C (74°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Monthly rainfall reaches 136 mm — wet for this destination — but about 26 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.

On our climate-comfort scale this is the top-ranked month of the year for Ishigaki at 7.9/10 — the reference point every other month on this page is measured against.

Plan for peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella.

May in Ishigaki — reliably good (6th best month)

Good · 7.2/10

With 26°C (78°F) on average, May delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.

This is the year's wettest stretch at 289 mm, but with about 23 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.

That is 7.2/10 on the same scale — 6th of 12 months, versus 7.9/10 for the best month here.

Budget for mid-season pricing, and crowds are moderate.

Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella.

June holds up well in Ishigaki — 7th best month

Good · 7.2/10

June averages 28°C (82°F) and humidity near 85%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

239 mm makes this the wettest stretch of the year, though about 26 days with 6+ hours of sunshine still appear — keep an indoor fallback ready.

It scores 7.2/10 here, 7th of 12 months, against 7.9/10 in the destination's best month.

Plan for mid-season pricing, with crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

July in Ishigaki: strong conditions, 3rd of 12

Good · 7.6/10

July averages 29°C (84°F) and humidity near 80%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Monthly rainfall reaches 189 mm — wet for this destination — but about 28 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.

It scores 7.6/10 here, 3rd of 12 months, against 7.9/10 in the destination's best month.

Figure on peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

August in Ishigaki: strong conditions, 2nd of 12

Good · 7.7/10

Days in August average 29°C (84°F) and humidity near 81% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

163 mm of rain makes this a wet month here, though with about 29 days with 6+ hours of sunshine there is still bright weather between the fronts.

That is 7.7/10 on the same scale — 2nd of 12 months, versus 7.9/10 for the best month here.

Budget for peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

September in Ishigaki — reliably good (8th best month)

Good · 7.2/10

Days in September average 28°C (83°F) and humidity near 81% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

This is the year's wettest stretch at 259 mm, but with about 27 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.

That is 7.2/10 on the same scale — 8th of 12 months, versus 7.9/10 for the best month here.

Expect mid-season pricing, and crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

October in Ishigaki: strong conditions, 9th of 12

Good · 7.2/10

October averages 27°C (80°F) and humidity near 75%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

267 mm makes this the wettest stretch of the year, though about 24 days with 6+ hours of sunshine still appear — keep an indoor fallback ready.

It scores 7.2/10 here, 9th of 12 months, against 7.9/10 in the destination's best month.

Plan for mid-season pricing, with crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

November in Ishigaki — reliably good (4th best month)

Good · 7.4/10

November averages 24°C (75°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Monthly rainfall reaches 172 mm — wet for this destination — but about 20 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.

It scores 7.4/10 here, 4th of 12 months, against 7.9/10 in the destination's best month.

Figure on mid-season pricing, with crowds are moderate.

Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella.

December in Ishigaki — workable with trade-offs

Trade-offs · 6.2/10

With 21°C (69°F) on average, December delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.

137 mm of rain signals a properly wet month, with only about 17 days with 6+ hours of sunshine to count on — build indoor options into the schedule.

That is 6.2/10 on the same scale — 11th of 12 months, versus 7.9/10 for the best month here.

Expect mid-season pricing, and crowds are light for this destination.

Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella.

If your dates are flexible, April is materially better in Ishigaki — 1.7 points higher on the same scale.