Kagoshima weather in July

July in Kagoshima: sweltering, soaked, with clean air — not the time — 21 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Kagoshima🇯🇵 Japan · Mainland Japan · City45
  1. 70Jan
  2. 68Feb
  3. 74Mar
  4. 82Apr
  5. 72May
  6. 49Jun
  7. 45Jul
  8. 52Aug
  9. 55Sep
  10. 78Oct
  11. 84Nov
  12. 75Dec

#12 of 12 months in Kagoshima · #1254 of 1413 destinations to visit in July · comfort 45/100 (tier F)

Days
32°C
Nights
26°C
Wet days
21
Sun
9.1 h
Humidity
87%
Daylight
14 h
Kagoshima, Japan
Photo: Jiayu Wu · Pexels

Traveller notes on Kagoshima in July

Other months in Kagoshima

This is one of the earliest places in Japan to enter the rainy season, and regulars date it precisely - the meteorological agency has called it for southern Kyushu as early as May 11 in some years, typically late May into early June, running to about mid-July. It does not rain every day, and when it does it is rarely the tropical squall people picture; the real humidity does not bite until July. Our row already shows the shift: 263.9mm across 12.9 days, well ahead of April, at 81.1 percent humidity, though the temperature stays comfortable at 25.6C reading as 27C over 17.5C nights. Sakurajima keeps smoking through all of it regardless of the season - locals here carry a dedicated ash umbrella rather than count on a rain one. The sea is 21C. The record: 7.9 hours of sun, a 14.9 kph wind and AQI 59.
TsuyuArrivesBeforeJuneHere · May · 1 month ago · Read more on Tripadvisor ↗
Kyushu opens the blossom season and Kagoshima is among the warm places where early trees show in late March - but the board is careful about two things. Peak lasts three to five days, and it lands somewhere in the last week of March or the first of April rather than on a date you can book, so the year's forecast is the only planning tool. And late March weather here is changeable and often wet. Our row agrees emphatically: 168.3mm across 12.3 days with only 7.6 hours of sun, under 18.5C days and 9.4C nights that feel like 7C in a 16.3 kph wind. The volcano across the bay adds ash to the city whenever the wind sets that way. The record: humidity 77 percent, a 17.9C sea and AQI 54.
SouthFirstForBlossom · March · 1 month ago · Read more on Tripadvisor ↗
Regulars say you will not find snow in Kyushu in early December and that the cities are cold without being subzero - our row's 15.3C day over a 6.7C night reading as 4C is exactly that, and the 0.1cm in the snow column belongs to the hills rather than the streets. What makes Kagoshima different from any other winter city here is in the air rather than the forecast. Sakurajima sits across the bay and sheds ash even when it is not properly erupting, enough to collect on the pavements; residents live with it as routine. Our AQI of 52 measures pollution, not ash, so the column understates what you will actually notice. The record: 68.1mm across 7 precipitation days, humidity 75 percent, 7 hours of sun and a 19.1C sea.
AshNotSmog · December · 1 month ago · Read more on Tripadvisor ↗
Mid to late November is autumn-colour season in Kyushu, and the forum's rule is altitude before date: the turn starts above about 1,000m in late October and works down to the plains by late November into early December. In practice that makes Kirishima the November drive, its great torii framed by red and gold, while Sengan-en on the bay is the in-town garden, at its best in mid-autumn with chrysanthemum displays through the month. November has a reputation as one of Japan's driest months; our own row is the caution, because Kagoshima is not where that holds - 111.7mm over 8.6 precipitation days and only 7.6 hours of sun a day. The rest: 21.2C days, 12.7C nights, humidity 78 percent and a 22C sea.
AltitudeBeforeDate · November · 1 month ago · Read more on Tripadvisor ↗

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Kagoshima climate normals — July

Daytime high32°C / 90°F🔥 sweltering
Nighttime low26°C / 78°F
Feels like (high)37°C / 99°F
Sea temperature28°C / 82°F😎 warm sea
Rainfall315 mm / 12.4 in⛈ soaked
Rainy days21 days
Humidity87%💦 very humid
Dew point25°C / 76°F
Sunshine9.1 h/day
Daylight14 h
Wind15 km/h / 9 mph
Air quality (US AQI)35🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Kagoshima in July

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

BusySummer break (natsuyasumi) in Japan, school holidays in 4 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Kagoshima's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Toughest weatherKagoshima's best weather comes in April, October and November — separate windows, not one continuous season.

July coincides with Sakurajima ashfall.

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Best weatherFair weatherToughest weather

What's on in Kagoshima in July

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Hazard

    Sakurajima ashfall

    15 May – 30 Sep · usuallyDust season

    The volcano across the bay erupts most weeks of the year, but it is in summer that the wind carries the ash over the city. Umbrellas go up on a clear day and the council hands out yellow ash bags. Source ↗

  • Season

    Tsuyu, the rain season

    30 May – 20 Jul · usuallyMonsoonRisk

    Southern Kyushu takes the heaviest rainy season in Japan. The warnings that close roads here are about the hillsides rather than the rivers, and they come several times a June.

  • Hazard

    Typhoon season

    15 Jul – 30 Sep · usuallyClosures

    More systems make landfall around here than anywhere else in the country. The Sakurajima ferry and the boats to Yakushima stop a day before the storm arrives. Source ↗

  • Season

    Wet season

    MonsoonRisk

    21 rainy days and about 315 mm in the month — the real kind of rainy season, not afternoon showers.

    from the climate normals

What's on around the world in July →

Nearby, and something's on

Within 300 km of Kagoshima — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Kagoshima?

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Kagoshima in July — FAQ

Is July a good time to visit Kagoshima?
July in Kagoshima: sweltering, soaked, with clean air — not the time — 21 rainy days. It ranks #12 of 12 months for Kagoshima on SeasonMap's comfort score (45/100).
What is the weather like in Kagoshima in July?
In July, Kagoshima averages a daily high of 32.2°C and a low of 25.8°C, with about 314.8 mm of rain over roughly 21 rainy days.
What is the air quality in Kagoshima in July?
Kagoshima has a mean US Air Quality Index of about 35 in July.

Within 300 km: Yakushima's Loggerhead nesting around 10 May – 10 Jul, and Fukuoka's Hakata Gion Yamakasa on 1–15 Jul.