AI-generatedOkayama at a glance
- Best time
- Apr – Jun, Sep – Nov
- Warmest month
- Aug · 31°
- Warmest sea
- Aug · 27.4°
- Sunshine a year
- 2,120 h
- Rain a year
- 1,259 mm
- Climate
- Temperate
- Time zone
- UTC+9
- Elevation
- 5 m
Climate in Okayama
Okayama has a temperate climate with warm summers and cool winters. August is the warmest month with average highs of 31 °C, while January is the coolest at 9 °C. With around 2,120 hours of sunshine a year, Okayama is moderately sunny; May is the sunniest month with 6.9 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Good
Best time to visit: April – June, September – November
October is the peak of the typhoon season
Good forSightseeing & walks
Keep in mindStorm season
A typical day in October
- Morning, 08:00: about 18°
- Midday, 13:00: about 22°
- Afternoon, 16:00: about 21°
- Evening, 20:00: about 18°
- Night, 23:00: about 17°
06:0917:31
Pleasant evenings; a light layer can help.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 05:53–06:43 · evening 16:57–17:47
- Blue hour
- Morning 05:43–05:53 · evening 17:47–17:56
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.
What is the weather like in Okayama in October?
In October, Okayama is warm: daytime highs average 22 °C, and nights cool down to about 15 °C. The sea averages 23.7 °C – pleasant for swimming. Expect around 6 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 123 mm in total. All in all, October is a good month for a holiday in Okayama.
More details for October
- Daylight
- 11 h 22 min06:09 – 17:31
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 4 daysdew point 18 °C or moreAll months
- Wind
- 20 km/haverage daily peakAll months
- Cloud cover
- 51 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+9Asia/Tokyo
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %45 %
- Few rainy daysweight 30 %64 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Swimwear
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Sea temperature in Okayama
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 22.9 – 24.5 °C
Swimming season: Jun – Oct
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Okayama ranges from 11.8 °C in February to 27.4 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to October.
From October to February the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in August, eight out of ten years were between 26.6 and 28.2 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 13.0° | 10.2° | 17.3° | cold |
| FebruaryFeb | 11.8° | 8.6° | 16.9° | cold |
| MarchMar | 12.4° | 9.4° | 17.6° | cold |
| AprilApr | 14.4° | 12.3° | 18.4° | cold |
| MayMay | 17.3° | 16.1° | 18.5° | fresh |
| JuneJun | 21.2° | 20.6° | 21.9° | refreshing |
| JulyJul | 24.9° | 24.1° | 25.7° | pleasant |
| AugustAug | 27.4° | 26.6° | 28.2° | warm |
| SeptemberSep | 26.6° | 25.8° | 27.6° | warm |
| OctoberOct | 23.7° | 22.9° | 24.5° | pleasant |
| NovemberNov | 19.8° | 19.2° | 20.4° | fresh |
| DecemberDec | 16.1° | 14.4° | 17.7° | cold |
Sunshine hours in Okayama
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 5.7 of 11.4 hours of daylight in Okayama, 50 % of the day.
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.
UV index in Okayama
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 5 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 11).
Minutes until sunburn in October
- Very fair skin
- about 25 min
- Fair skin
- about 30 min
- Light brown skin
- about 45 min
- Olive skin
- about 55 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, 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.
Rain in Okayama: 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, Okayama has about 9 rainy days with 123 mm of rain in total.
Wind and clouds in Okayama
How breezy and how cloudy Okayama 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 Okayama typically peaks at 20 km/h during the day: Beaufort 4, moderate 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: Oct – Apr.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 51 % of the sky over Okayama: variable cloud, with about 5.7 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 Okayama
How often the day gets hot in Okayama (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, Okayama has about 0 hot days, with an average daytime high of 22 °C: pleasant. Heat plays no part this month.
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
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Okayama
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
- Warm 20–24°
- Hot 24° and more
- muggy month (10+ muggy days)
PleasantOctober: nights around 15°. Ideal for sleeping, often with the window open. Muggy on about 4 days (dew point 18 °C or more).
The coolest nights are in January (2°), the warmest in August (25°). Tropical nights of 20 °C and more are the rule from July to September; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) from May to June and in October. Nights fall below 8 °C on average from December to March, so the room should be heated. It is muggy (dew point 18 °C or more) on about 103 days a year, mostly from June to September.
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 | 29 | 9° | 2° | 13.0° | 5.1 h | 10 | 54 |
| FebruaryFeb | 36 | 10° | 2° | 11.8° | 5.3 h | 9 | 61 |
| MarchMar | 53 | 14° | 5° | 12.4° | 5.9 h | 11 | 95 |
| AprilApr | 79 | 18° | 10° | 14.4° | 6.5 h | 10 | 105 |
| MayMay | 81 | 23° | 15° | 17.3° | 6.9 h | 10 | 124 |
| JuneJun | 73 | 26° | 19° | 21.2° | 5.4 h | 11 | 166 |
| JulyJul | 60 | 29° | 23° | 24.9° | 6.0 h | 11 | 160 |
| AugustAug | 59 | 31° | 25° | 27.4° | 6.9 h | 8 | 106 |
| SeptemberSep | 72 | 27° | 21° | 26.6° | 5.4 h | 11 | 144 |
| OctoberOct | 78 | 22° | 15° | 23.7° | 5.7 h | 9 | 123 |
| NovemberNov | 73 | 17° | 9° | 19.8° | 5.3 h | 8 | 64 |
| DecemberDec | 41 | 11° | 4° | 16.1° | 5.1 h | 9 | 56 |
Climate averages 1996–2025, 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
34.65° N, 133.93° E · 5 m · Asia/Tokyo
Best time to visit Okayama
The best time to visit Okayama is from April to June and from September to November. For a beach holiday with the sea above 21 °C, go from June to September. For sightseeing, day trips and hiking, conditions are most comfortable from April to June and from September to November. The wettest month is June with 166 mm of precipitation.
Okayama through the seasons
How the weather changes over the seasons, with averages for each.
Okayama in spring
Mar – May
Good
- 14–23 °C by day
- Sea 15 °C
- 6 h of sun a day
- 30 rainy days in all
Okayama in summer
Jun – Aug
Good
- 26–31 °C by day
- Sea 25 °C
- 6 h of sun a day
- 30 rainy days in all
Okayama in autumn
Sep – Nov
Good
- 17–27 °C by day
- Sea 23 °C
- 6 h of sun a day
- 27 rainy days in all
Okayama in winter
Dec – Feb
Poor
- 9–11 °C by day
- Sea 14 °C
- 5 h of sun a day
- 29 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Okayama for you.
Your best months: May, October
Based on the climate averages; tap a month to see its details.
Compare two months in Okayama
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
October and May bring similar holiday weather to Okayama (score 78 and 81). In May, days are 1 °C warmer than in October. The sea is 6 °C cooler in May. May has one more rainy day. The sun shines an hour longer a day in May.
| Month | October | May |
|---|---|---|
| Weather score | 78 | 81better |
| Day high | 22° | 23° |
| Night low | 15° | 15° |
| Sea | 23.7° | 17.3° |
| Sunshine | 5.7 h | 6.9 hbetter |
| Rainy days | 9better | 10 |
| Rainfall | 123 mm | 124 mm |
| Muggy days | 4 | 2better |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
Jun – Sep
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Apr – Jun, Sep – Nov
15–28 °C and not too much rain
Okayama month by month
The typical weather for every month at a glance.
29January9° · Sea 13° · 5 h
In January, Okayama is cold: daytime highs average 9 °C, and nights cool down to about 2 °C. The sea averages 13.0 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 54 mm in total. All in all, January is not an ideal month for a holiday in Okayama.
Okayama in January36February10° · Sea 12° · 5 h
In February, Okayama is cold: daytime highs average 10 °C, and nights cool down to about 2 °C. The sea averages 11.8 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 61 mm in total. All in all, February is not an ideal month for a holiday in Okayama.
Okayama in February53March14° · Sea 12° · 6 h
In March, Okayama is cool: daytime highs average 14 °C, and nights cool down to about 5 °C. The sea averages 12.4 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 95 mm in total. All in all, March is a so-so month for a holiday in Okayama.
Okayama in March79April18° · Sea 14° · 7 h
In April, Okayama is mild: daytime highs average 18 °C, and nights cool down to about 10 °C. The sea averages 14.4 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is frequent, with about 10 rainy days and 105 mm in total. All in all, April is a good month for a holiday in Okayama.
Okayama in April81May23° · Sea 17° · 7 h
In May, Okayama is warm: daytime highs average 23 °C, and nights cool down to about 15 °C. The sea averages 17.3 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7 hours a day. Rain is frequent, with about 10 rainy days and 124 mm in total. All in all, May is an excellent month for a holiday in Okayama.
Okayama in May73June26° · Sea 21° · 5 h
In June, Okayama is warm: daytime highs average 26 °C, and nights cool down to about 19 °C. The sea averages 21.2 °C – refreshing for a swim. Expect around 5 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 166 mm in total. The air is often humid and muggy. All in all, June is a good month for a holiday in Okayama.
Okayama in June60July29° · Sea 25° · 6 h
In July, Okayama is hot: daytime highs average 29 °C, and even at night it stays warm at around 23 °C. The sea averages 24.9 °C – pleasant for swimming. Expect around 6 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 160 mm in total. On about 13 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a good month for a holiday in Okayama.
Okayama in July59August31° · Sea 27° · 7 h
In August, Okayama is hot: daytime highs average 31 °C, and even at night it stays warm at around 25 °C. The sea averages 27.4 °C – lovely and warm for swimming. The sun shines for around 7 hours a day. Rain falls on about 8 days, adding up to 106 mm. On about 22 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a so-so month for a holiday in Okayama.
Okayama in August72September27° · Sea 27° · 5 h
In September, Okayama is hot: daytime highs average 27 °C, and even at night it stays warm at around 21 °C. The sea averages 26.6 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 144 mm in total. On about 5 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a good month for a holiday in Okayama.
Okayama in September78October22° · Sea 24° · 6 h
In October, Okayama is warm: daytime highs average 22 °C, and nights cool down to about 15 °C. The sea averages 23.7 °C – pleasant for swimming. Expect around 6 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 123 mm in total. All in all, October is a good month for a holiday in Okayama.
Okayama in October73November17° · Sea 20° · 5 h
In November, Okayama is mild: daytime highs average 17 °C, and nights cool down to about 9 °C. The sea averages 19.8 °C – bracing, so a wetsuit helps for longer swims. Expect around 5 hours of sunshine a day. Rain falls on about 8 days, adding up to 64 mm. All in all, November is a good month for a holiday in Okayama.
Okayama in November41December11° · Sea 16° · 5 h
In December, Okayama is cool: daytime highs average 11 °C, and nights cool down to about 4 °C. The sea averages 16.1 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 56 mm in total. All in all, December is a so-so month for a holiday in Okayama.
Okayama in DecemberOkayama compared
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Okayama vs. Kobe
In October the holiday weather in Okayama and Kobe is about equally good (score 78 vs. 75). During the day it is about as warm in Kobe as in Okayama. The sea in Kobe is 1 °C cooler.
| in October | Okayama | Kobe |
|---|---|---|
| Holiday score | 78 | 75 |
| Daytime high | 22° | 22° |
| Sea | 24° | 23° |
| Sunshine | 6 h | 6 h |
| Rainy days | 9 | 10 |
| Best time | Apr – Jun, Sep – Nov | Apr – Nov |
Through the year
Japan in October: the best places
In October, Okayama ranks 6 among the 31 nearest destinations in this country.
- Hiroshima22°23°81
- 2Fukuoka22°23°81
- 3Nagasaki23°24°81
- 4Kumamoto23°23°80
- 5Kitakyūshū22°23°79
- 6OkayamaThis page22°24°78
- 7Kagoshima24°26°77
- 8Okinawa26°27°77
Planning a trip to Okayama
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Okayama 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.
Okayama has its best school-holiday weather during May half-term (score 79) and its weakest during the Christmas holidays (score 35).
- 71
Easter holidays
Mar – Apr
Good
- 17 °C by day
- Sea 14 °C
- 6.3 h of sun a day
- 10 rainy days a month
- 79
May half-term
May – Jun
GoodBest holidays
- 23 °C by day
- Sea 18 °C
- 6.6 h of sun a day
- 10 rainy days a month
Good for: Sightseeing & walks
- 59
Summer holidays
Jul – Aug
Fair
- 30 °C by day
- Sea 27 °C
- 6.6 h of sun a day
- 9 rainy days a month
Good for: Beach & swimming
Keep in mind: Storm season
- 78
October half-term
Oct
Good
- 22 °C by day
- Sea 24 °C
- 5.7 h of sun a day
- 9 rainy days a month
Good for: Sightseeing & walks
Keep in mind: Storm season
- 35
Christmas holidays
Dec – Jan
Poor
- 10 °C by day
- Sea 15 °C
- 5.1 h of sun a day
- 10 rainy days a month
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 11 h 55 min
- Distance
- 9,460 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
Okayama 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); not a forecast.
Frequently asked questions about Okayama
When is the best time to visit Okayama?
The best time to visit Okayama is from April to June and from September to November. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Okayama?
The sea temperature in Okayama ranges from 11.8 °C in February to 27.4 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to October.
Can you swim in Okayama in October?
Yes. In October the sea averages 23.7 °C – pleasant for swimming.
What is the warmest month in Okayama?
August is the warmest month, with average highs of 31 °C and nights around 25 °C. January is the coolest month at 9 °C.
When does it rain most in Okayama?
The wettest month is June with 166 mm of precipitation. The driest month is January with 54 mm.
How many hours of sunshine does Okayama get?
Okayama gets around 2,120 hours of sunshine a year. The sunniest month is May with 6.9 hours a day; in January there are 5.1 hours a day.
What time zone is Okayama in?
Okayama uses the time zone Asia/Tokyo, at UTC+9 all year.
How long is the flight from London to Okayama?
A nonstop flight from London to Okayama takes about 11 h 55 min, for a straight-line distance of about 9,460 km. Most routes need a change of planes, which adds time.
When is typhoon season in Okayama?
Okayama 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 Okayama?
Okayama has its best school-holiday weather during May half-term (score 79) and its weakest during the Christmas holidays (score 35). Holiday ratings (0–100): Easter holidays 71, May half-term 79, Summer holidays 59, October half-term 78, Christmas holidays 35.
Near Okayama
Other destinations close by.
Places with a climate like Okayama
Destinations whose weather through the year is closest to Okayama's – good alternatives.