AI-generatedYonaguni at a glance
- Best time
- Apr – Sep
- Warmest month
- Jul · 31°
- Warmest sea
- Jul · 29.2°
- Sunshine a year
- 1,730 h
- Rain a year
- 2,388 mm
- Climate
- Subtropical
- Time zone
- UTC+9
- Elevation
- 20 m
Climate in Yonaguni
Yonaguni has a subtropical climate with warm summers and mild winters. July is the warmest month with average highs of 31 °C, while January is the coolest at 21 °C. With around 1,730 hours of sunshine a year, Yonaguni is moderately sunny; July is the sunniest month with 8.2 hours a day.
Holiday weather through the year
Best time to visit Yonaguni
The best time to visit Yonaguni is from April to September. In August and September, though, the typhoon season is at its peak: check the forecast before you go. The sea reaches 29.2 °C in July, but rain or cool air gets in the way of a classic beach holiday. The wettest month is September with 253 mm of precipitation.
Yonaguni through the seasons
How the weather changes over the seasons, with averages for each.
Yonaguni in spring
Mar – May
Good
- 24–28 °C by day
- Sea 26 °C
- 4.5 h of sun a day
- 52 rainy days in all
Yonaguni in summer
Jun – Aug
Good
- 30–31 °C by day
- Sea 29 °C
- 7.4 h of sun a day
- 48 rainy days in all
Yonaguni in autumn
Sep – Nov
Good
- 26–29 °C by day
- Sea 28 °C
- 4.9 h of sun a day
- 53 rainy days in all
Yonaguni in winter
Dec – Feb
Fair
- 21–23 °C by day
- Sea 24 °C
- 2.1 h of sun a day
- 62 rainy days in all
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
No month
15–28 °C and not too much rain
Rainy months
All year
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Yonaguni for you.
Your best months: June – July, September
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Good
Best time to visit: April – September
October is the peak of the typhoon season Hurricane season
Where to go in OctoberSea temperature in October
Keep in mindFrequent rainStorm season
A typical day in October
- Morning, 08:00: about 25°
- Midday, 13:00: about 27°
- Afternoon, 16:00: about 27°
- Evening, 20:00: about 26°
- Night, 23:00: about 25°
06:4518:22
Warm enough for a T-shirt in the evening.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 06:31–07:15 · evening 17:52–18:36
- Blue hour
- Morning 06:22–06:31 · evening 18:36–18:45
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Yonaguni compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 28° at the start of the month to 26° at the end. The sea cools from 28° to 27°. The days get 0.7 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 28° | 26° |
| Night-time low | 25° | 23° |
| Sea | 28° | 27° |
| Daylight | 11.9 h | 11.3 h |
What is the weather like in Yonaguni in October?
In October, Yonaguni is hot: daytime highs average 28 °C, and even at night it stays warm at around 24 °C. The sea averages 27.6 °C – lovely and warm for swimming. Expect around 4.8 hours of sunshine a day. It rains often – on about 17 days, adding up to 208 mm. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 35 km/h. All in all, October is a good month for a holiday in Yonaguni.
More details for October
- Daylight
- 11 h 37 min06:45 – 18:22
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 27 daysdew point 18 °C or moreAll months
- Wind
- 35 km/haverage daily peakAll months
- Cloud cover
- 62 %on averageAll months
- Hot days
- 1 day30 °C or moreAll months
- Time zone
- UTC+9offset from UTC
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %30 %
- Few rainy daysweight 20 %7 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
- Windproof jacket
Compare two months in Yonaguni
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
July has the better holiday weather in Yonaguni: score 83 against 67. In July, days are 3 °C warmer than in October. The sea is 2 °C warmer in July. July has 3 fewer rainy days. The sun shines 3 hours longer a day in July.
| Month | October | July |
|---|---|---|
| Holiday weather score | 67 | 83better |
| Daytime high | 28° | 31° |
| Night-time low | 24° | 27° |
| Sea | 27.6° | 29.2° |
| Sunshine | 4.8 h | 8.2 hbetter |
| Rainy days | 17 | 14better |
| Rainfall | 208 mm | 155 mmbetter |
| Muggy days | 27better | 31 |
Based on the climate averages 1996–2025.
Yonaguni month by month
The typical weather for every month at a glance.
39January21° · Sea 24° · 1.9 h
In January, Yonaguni is warm: daytime highs average 21 °C, and nights cool down to about 18 °C. The sea averages 23.9 °C – pleasant for swimming. The sun is scarce, with only about 1.9 hours a day. It rains often – on about 22 days, adding up to 196 mm. It is often windy: on a typical day the wind peaks at around 38 km/h. All in all, January is not an ideal month for a holiday in Yonaguni.
Yonaguni in January41February22° · Sea 24° · 2.3 h
In February, Yonaguni is warm: daytime highs average 22 °C, and nights cool down to about 19 °C. The sea averages 23.7 °C – pleasant for swimming. The sun is scarce, with only about 2.3 hours a day. It rains often – on about 19 days, adding up to 160 mm. It is often windy: on a typical day the wind peaks at around 37 km/h. All in all, February is a so-so month for a holiday in Yonaguni.
Yonaguni in February54March24° · Sea 24° · 3.6 h
In March, Yonaguni is warm: daytime highs average 24 °C, and even at night it stays warm at around 20 °C. The sea averages 24.3 °C – pleasant for swimming. The sun is scarce, with only about 3.6 hours a day. It rains often – on about 18 days, adding up to 165 mm. It is often windy: on a typical day the wind peaks at around 35 km/h. All in all, March is a so-so month for a holiday in Yonaguni.
Yonaguni in March68April26° · Sea 25° · 4.6 h
In April, Yonaguni is warm: daytime highs average 26 °C, and even at night it stays warm at around 23 °C. The sea averages 25.4 °C – pleasant for swimming. Expect around 4.6 hours of sunshine a day. It rains often – on about 16 days, adding up to 175 mm. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 32 km/h. All in all, April is a good month for a holiday in Yonaguni.
Yonaguni in April68May28° · Sea 27° · 5.4 h
In May, Yonaguni is hot: daytime highs average 28 °C, and even at night it stays warm at around 25 °C. The sea averages 26.9 °C – lovely and warm for swimming. Expect around 5.4 hours of sunshine a day. It rains often – on about 18 days, adding up to 242 mm. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 29 km/h. All in all, May is a good month for a holiday in Yonaguni.
Yonaguni in May73June30° · Sea 29° · 6.7 h
In June, Yonaguni is hot: daytime highs average 30 °C, and even at night it stays warm at around 27 °C. The sea averages 28.5 °C – lovely and warm for swimming. The sun shines for around 6.7 hours a day. It rains often – on about 18 days, adding up to 186 mm. On about 12 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 31 km/h. All in all, June is a good month for a holiday in Yonaguni.
Yonaguni in June83July31° · Sea 29° · 8.2 h
In July, Yonaguni is hot: daytime highs average 31 °C, and even at night it stays warm at around 27 °C. The sea averages 29.2 °C – almost as warm as a bath. The sun shines for around 8.2 hours a day. It rains often – on about 14 days, adding up to 155 mm. On about 26 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 31 km/h. All in all, July is an excellent month for a holiday in Yonaguni.
Yonaguni in July76August30° · Sea 29° · 7.3 h
In August, Yonaguni is hot: daytime highs average 30 °C, and even at night it stays warm at around 27 °C. The sea averages 29.2 °C – almost as warm as a bath. The sun shines for around 7.3 hours a day. It rains often – on about 17 days, adding up to 222 mm. On about 23 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 28 km/h. All in all, August is a good month for a holiday in Yonaguni.
Yonaguni in August74September29° · Sea 29° · 6.5 h
In September, Yonaguni is hot: daytime highs average 29 °C, and even at night it stays warm at around 26 °C. The sea averages 28.7 °C – lovely and warm for swimming. The sun shines for around 6.5 hours a day. It rains often – on about 16 days, adding up to 253 mm. On about 8 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 31 km/h. All in all, September is a good month for a holiday in Yonaguni.
Yonaguni in September67October28° · Sea 28° · 4.8 h
In October, Yonaguni is hot: daytime highs average 28 °C, and even at night it stays warm at around 24 °C. The sea averages 27.6 °C – lovely and warm for swimming. Expect around 4.8 hours of sunshine a day. It rains often – on about 17 days, adding up to 208 mm. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 35 km/h. All in all, October is a good month for a holiday in Yonaguni.
Yonaguni in October61November26° · Sea 27° · 3.4 h
In November, Yonaguni is warm: daytime highs average 26 °C, and even at night it stays warm at around 23 °C. The sea averages 26.5 °C – lovely and warm for swimming. The sun is scarce, with only about 3.4 hours a day. It rains often – on about 19 days, adding up to 209 mm. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 37 km/h. All in all, November is a good month for a holiday in Yonaguni.
Yonaguni in November47December23° · Sea 25° · 2.1 h
In December, Yonaguni is warm: daytime highs average 23 °C, and even at night it stays warm at around 20 °C. The sea averages 25.1 °C – pleasant for swimming. The sun is scarce, with only about 2.1 hours a day. It rains often – on about 21 days, adding up to 215 mm. It is often windy: on a typical day the wind peaks at around 40 km/h. All in all, December is a so-so month for a holiday in Yonaguni.
Yonaguni in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Yonaguni
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Pleasant 15–20°
- Warm 20–24°
- Hot 24° and more
- muggy month (15+ muggy days)
HotOctober: nights around 24°. Hot nights: air conditioning makes sleeping much easier. Muggy on about 27 days (dew point 18 °C or more).
The coolest nights are in January (18°), the warmest in July (27°). Tropical nights of 20 °C and more are the rule from March to December; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) from January to February. It is muggy (dew point 18 °C or more) on about 246 days a year, mostly from April to November.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 39 | 21° | 18° | 23.9° | 1.9 h | 22 | 196 |
| FebruaryFeb | 41 | 22° | 19° | 23.7° | 2.3 h | 19 | 160 |
| MarchMar | 54 | 24° | 20° | 24.3° | 3.6 h | 18 | 165 |
| AprilApr | 68 | 26° | 23° | 25.4° | 4.6 h | 16 | 175 |
| MayMay | 68 | 28° | 25° | 26.9° | 5.4 h | 18 | 242 |
| JuneJun | 73 | 30° | 27° | 28.5° | 6.7 h | 18 | 186 |
| JulyJul | 83 | 31° | 27° | 29.2° | 8.2 h | 14 | 155 |
| AugustAug | 76 | 30° | 27° | 29.2° | 7.3 h | 17 | 222 |
| SeptemberSep | 74 | 29° | 26° | 28.7° | 6.5 h | 16 | 253 |
| OctoberOct | 67 | 28° | 24° | 27.6° | 4.8 h | 17 | 208 |
| NovemberNov | 61 | 26° | 23° | 26.5° | 3.4 h | 19 | 209 |
| DecemberDec | 47 | 23° | 20° | 25.1° | 2.1 h | 21 | 215 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
24.47° N, 123.00° E · 20 m · Asia/Tokyo
Sea temperature in Yonaguni
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 27.0 – 28.3 °C
Swimming season: all year
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Yonaguni ranges from 23.7 °C in February to 29.2 °C in July. At 20 °C and more, the sea is warm enough for swimming all year round.
From October to March the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in July, eight out of ten years were between 28.7 and 29.8 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 23.9° | 23.1° | 24.7° | pleasant |
| FebruaryFeb | 23.7° | 23.0° | 24.5° | pleasant |
| MarchMar | 24.3° | 23.6° | 25.0° | pleasant |
| AprilApr | 25.4° | 24.7° | 26.3° | pleasant |
| MayMay | 26.9° | 26.0° | 27.7° | warm |
| JuneJun | 28.5° | 27.9° | 29.1° | warm |
| JulyJul | 29.2° | 28.7° | 29.8° | very warm |
| AugustAug | 29.2° | 28.6° | 30.0° | very warm |
| SeptemberSep | 28.7° | 28.3° | 29.4° | warm |
| OctoberOct | 27.6° | 27.0° | 28.3° | warm |
| NovemberNov | 26.5° | 25.7° | 27.2° | warm |
| DecemberDec | 25.1° | 24.3° | 26.0° | pleasant |
Sunshine hours in Yonaguni
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 4.8 of 11.6 hours of daylight in Yonaguni, 41 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Yonaguni: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Yonaguni has about 17 rainy days with 208 mm of rain in total.
UV index in Yonaguni
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 8 · very highStay in the shade around midday; SPF 50, clothing, hat and sunglasses.
The sun is strongest in June (UV 12).
Minutes until sunburn in October
- Very fair skin
- about 15 min
- Fair skin
- about 20 min
- Light brown skin
- about 30 min
- Olive skin
- about 40 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind and clouds in Yonaguni
How breezy and how cloudy Yonaguni is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Yonaguni typically peaks at 35 km/h during the day: Beaufort 5, fresh breeze.
Breezy months for windsurfing and kiting
From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting, and here it is that strong all year.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 62 % of the sky over Yonaguni: variable cloud, with about 4.8 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Yonaguni
How often the day gets hot in Yonaguni (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Yonaguni has about 1 hot day, with an average daytime high of 28 °C: often muggy. The air feels warmer than the thermometer says: light, airy clothes and slow days help.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Planning a trip to Yonaguni
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Yonaguni in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Yonaguni has its best school-holiday weather during the summer holidays (score 78) and its weakest during the Christmas holidays (score 43).
- 64
Easter holidays
Mar – Apr
Good
- 25 °C by day
- Sea 25 °C
- 4.3 h of sun a day
- 17 rainy days a month
Keep in mind: Frequent rain
- 69
May half-term
May – Jun
Good
- 28 °C by day
- Sea 27 °C
- 5.7 h of sun a day
- 18 rainy days a month
Keep in mind: Frequent rain
- 78
Summer holidays
Jul – Aug
GoodBest holidays
- 30 °C by day
- Sea 29 °C
- 7.6 h of sun a day
- 16 rainy days a month
Keep in mind: Frequent rain, Storm season
- 67
October half-term
Oct
Good
- 28 °C by day
- Sea 28 °C
- 4.8 h of sun a day
- 17 rainy days a month
Keep in mind: Frequent rain, Storm season
- 43
Christmas holidays
Dec – Jan
Fair
- 22 °C by day
- Sea 25 °C
- 2.0 h of sun a day
- 22 rainy days a month
Keep in mind: Frequent rain
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 12 h 30 min
- Distance
- 9,930 km
- Time zone
- UTC+9
- Jet lag
- About 8 days (8 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Storm season
Yonaguni lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January
- February
- March
- April
- May
- June: Season
- July: Season
- August: Peak
- September: Peak
- October: Peak
- November: Season
- December
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM, Fiji Meteorological Service); not a forecast.
Compare & alternatives
Yonaguni compared
Put Yonaguni side by side with another destination.
Yonaguni vs Jiufen
In October the holiday weather in Yonaguni and Jiufen is about equally good (score 67 vs 64). During the day Jiufen is 3 °C cooler than Yonaguni. The sea in Jiufen is 2 °C cooler. Jiufen gets one hour less sunshine a day.
| in October | Yonaguni | Jiufen |
|---|---|---|
| Holiday weather score | 67 | 64 |
| Daytime high | 28° | 25° |
| Sea | 28° | 26° |
| Sunshine | 5 h | 4 h |
| Rainy days | 17 | 17 |
| Best time | Apr – Sep | May – Oct |
Through the year
Japan in October: the best places
In October, Yonaguni ranks 31 among the 31 nearest destinations in this country.
- Sasebo24°24°82
- 2Nagasaki24°24°81
- 3Fukuoka24°23°81
- 4Kure23°23°81
- 5Hiroshima24°23°81
- 6Kumamoto24°23°80
- 7Shimonoseki24°23°80
- 8Yamaguchi23°80
- 31YonaguniThis page28°28°67
Near Yonaguni
Other destinations close by.
Places with a climate like Yonaguni
Destinations whose weather through the year is closest to Yonaguni's – good alternatives.
Frequently asked questions about Yonaguni
When is the best time to visit Yonaguni?
The best time to visit Yonaguni is from April to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Yonaguni?
The sea temperature in Yonaguni ranges from 23.7 °C in February to 29.2 °C in July. At 20 °C and more, the sea is warm enough for swimming all year round.
Can you swim in Yonaguni in October?
Yes. In October the sea averages 27.6 °C – lovely and warm for swimming.
What is the warmest month in Yonaguni?
July is the warmest month, with average highs of 31 °C and nights around 27 °C. January is the coolest month at 21 °C.
When does it rain most in Yonaguni?
The wettest month is September with 253 mm of precipitation. The driest month is July with 155 mm.
How many hours of sunshine does Yonaguni get?
Yonaguni gets around 1,730 hours of sunshine a year. The sunniest month is July with 8.2 hours a day; in January there are 1.9 hours a day.
What time zone is Yonaguni in?
Yonaguni is on UTC+9 all year.
How long is the flight from London to Yonaguni?
A nonstop flight from London to Yonaguni takes about 12 h 30 min, for a straight-line distance of about 9,930 km. Most routes need a change of planes, which adds time.
When is typhoon season in Yonaguni?
Yonaguni lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for Yonaguni?
Yonaguni has its best school-holiday weather during the summer holidays (score 78) and its weakest during the Christmas holidays (score 43). Holiday ratings (0–100): Easter holidays 64, May half-term 69, summer holidays 78, October half-term 67, Christmas holidays 43.