The best times to visit Ishigaki Island for ideal weather are
November 12th to May 6th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Ishigaki Island Travel Guide
Other Ishigaki Island Travel Info
Weather in Ishigaki Island
Temperature
Average temperatures in Ishigaki Island vary somewhat. Considering humidity, temperatures feel hot for about half of the year and otherwise nice with a chance of rain throughout most of the year. The area is less temperate than some — in the 34th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Ishigaki Island, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally early July where highs are regularly around 90.9°F (32.7°C) with temperatures rarely dropping below 82.1°F (27.8°C) at night.
Ishigaki Island Temperatures (Fahrenheit)
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Ishigaki Island Temperatures (Celsius)
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“Feels-Like” Temperatures
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Ishigaki Island Perceived Temperature (F)
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Ishigaki Island Perceived Temperature (C)
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Average Ishigaki Island Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
Show Fahrenheit
| Month | Avg. High (°F) | Avg. Mean (°F) | Avg. Low (°F) |
|---|---|---|---|
| Jan | 70.1 | 65.5 | 60.9 |
| Feb | 72.4 | 67.8 | 63.1 |
| Mar | 74.5 | 69.8 | 64.9 |
| Apr | 77.9 | 73.3 | 68.5 |
| May | 83.5 | 78.6 | 74.2 |
| Jun | 88.2 | 83.6 | 79.6 |
| Jul | 90.5 | 85.6 | 81.3 |
| Aug | 89.7 | 84.9 | 80.5 |
| Sep | 88.6 | 83.3 | 78.6 |
| Oct | 83.9 | 78.8 | 74.5 |
| Nov | 79.1 | 74.4 | 70.2 |
| Dec | 72.4 | 68 | 63.5 |
Show Celsius
| Month | Avg. High (°C) | Avg. Mean (°C) | Avg. Low (°C) |
|---|---|---|---|
| Jan | 21.2 | 18.6 | 16.1 |
| Feb | 22.4 | 19.9 | 17.3 |
| Mar | 23.6 | 21 | 18.3 |
| Apr | 25.5 | 22.9 | 20.3 |
| May | 28.6 | 25.9 | 23.4 |
| Jun | 31.2 | 28.7 | 26.4 |
| Jul | 32.5 | 29.8 | 27.4 |
| Aug | 32.1 | 29.4 | 26.9 |
| Sep | 31.4 | 28.5 | 25.9 |
| Oct | 28.8 | 26 | 23.6 |
| Nov | 26.2 | 23.6 | 21.2 |
| Dec | 22.4 | 20 | 17.5 |
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Ishigaki Island are March, July, and then April. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late June. For example, on the week of June 25th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in mid November with an average of 3 days of significant precipitation the week of November 12th.
When can you find snow in Ishigaki Island? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Ishigaki Island.
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Snow on the Ground
The graph below shows the average snow on the ground in Ishigaki Island (in).
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Average Rain and Snow by Month
Show Inches
| Month | Daily Chance of Rain | Average Snow Depth (in) | Total Precipitation (in) |
|---|---|---|---|
| Jan | 30% | 0 | 4.3 |
| Feb | 30% | 0 | 6.1 |
| Mar | 20% | 0 | 5.5 |
| Apr | 22% | 0 | 5.2 |
| May | 24% | 0 | 9.4 |
| Jun | 23% | 0 | 7.7 |
| Jul | 20% | 0 | 5.2 |
| Aug | 28% | 0 | 9.3 |
| Sep | 23% | 0 | 9.3 |
| Oct | 28% | 0 | 10.5 |
| Nov | 35% | 0 | 6.8 |
| Dec | 33% | 0 | 6.3 |
Show Centimeters
| Month | Daily Chance of Rain | Average Snow Depth (cm) | Total Precipitation (cm) |
|---|---|---|---|
| Jan | 30 | 0 | 10.9 |
| Feb | 30 | 0 | 15.5 |
| Mar | 20 | 0 | 14 |
| Apr | 22 | 0 | 13.2 |
| May | 24 | 0 | 23.9 |
| Jun | 23 | 0 | 19.6 |
| Jul | 20 | 0 | 13.2 |
| Aug | 28 | 0 | 23.6 |
| Sep | 23 | 0 | 23.6 |
| Oct | 28 | 0 | 26.7 |
| Nov | 35 | 0 | 17.3 |
| Dec | 33 | 0 | 16 |
Humidity and Wind
Ishigaki Island has some very humid months, and above average humidity throughout the year. The least humid month is December (63.5% relative humidity), and the most humid month is June (77.1%).
Wind in Ishigaki Island is usually moderate. The windiest month is July, followed by October and August. July’s average wind speed of around 11.3 knots (13 MPH or 21 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid August where average top sustained speeds reach 19.4 knots, which is considered a fresh breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Ishigaki Island.
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Wind
The graph below shows wind speed (max and average) in knots.
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Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
| Month | Avg. Wind | Avg. Wind Feel | Sustained High Wind | High Wind Feel |
| Jan | 10.3 | Gentle breeze | 15.2 | Significant breeze |
| Feb | 10.3 | Gentle breeze | 15.3 | Significant breeze |
| Mar | 10.1 | Gentle breeze | 15.3 | Significant breeze |
| Apr | 9.3 | Gentle breeze | 14.7 | Significant breeze |
| May | 8.6 | Gentle breeze | 14.1 | Significant breeze |
| Jun | 10.4 | Gentle breeze | 15.7 | Significant breeze |
| Jul | 11.3 | Significant breeze | 16.1 | Significant breeze |
| Aug | 10.9 | Gentle breeze | 16 | Significant breeze |
| Sep | 10.2 | Gentle breeze | 15.8 | Significant breeze |
| Oct | 11 | Significant breeze | 16.7 | Significant breeze |
| Nov | 10.8 | Gentle breeze | 16.3 | Significant breeze |
| Dec | 10.6 | Gentle breeze | 16.2 | Significant breeze |
Show Relative Humidity by Month
| Month | Avg. Relative Humidity |
|---|---|
| Jan | 64.2% |
| Feb | 68.6% |
| Mar | 67.6% |
| Apr | 70.6% |
| May | 74.5% |
| Jun | 77.1% |
| Jul | 72.3% |
| Aug | 73.9% |
| Sep | 70.2% |
| Oct | 67.9% |
| Nov | 67.6% |
| Dec | 63.5% |
Is it Safe to Travel to Ishigaki Island?
Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for Japan; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Nov 14, 2023.
The Busiest and Least Crowded Months
The busiest month for tourism in Ishigaki Island, Japan is August, followed by November and February. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Ishigaki Island in June. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
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Overall Ishigaki Island Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 86.1°F (30.1°C) and 72.3°F (22.4°C) with warmer temperatures in the later months. Rain is somewhat common with 6 to 7 days of significant precipitation per month. Spring is the slowest for tourism, which makes it a good time for those looking for deals.
Summer (June through August)
The middle-year months have hot weather with high temperatures that are quite warm. These months see moderate precipitation with 6 to 9 days of precipitation per month. June – August is fairly slow season for tourism in Ishigaki Island, so lodging and other accommodations may cost slightly less.
Fall (September through November)
Fall daily highs range from 89.3°F (31.8°C) and 75.7°F (24.3°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 7 to 11 days per month. Tourism is the busiest during these months due to the weather, so hotels may be higher priced.
Winter (December through February)
Weather is perfect this time of year in Ishigaki Island to be enjoyable for warm weather travelers. The average high during this season is between 74.4°F (23.6°C) and 69.4°F (20.8°C). On average, it rains or snows a fair amount: 8 to 10 times per month. These times of year are the second busiest with tourists.
Best Times to Travel› Japan › Ishigaki Island, Japan