Sendai weather in July

July in Sendai: hot, soaked, with clean air — fine if you can take 17 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Sendai🇯🇵 Japan · Mainland Japan · City65
  1. 57Jan
  2. 63Feb
  3. 69Mar
  4. 79Apr
  5. 87May
  6. 84Jun
  7. 65Jul
  8. 59Aug
  9. 73Sep
  10. 78Oct
  11. 76Nov
  12. 64Dec

#8 of 12 months in Sendai · #1003 of 1413 destinations to visit in July · comfort 65/100 (tier C)

Days
28°C
Nights
22°C
Wet days
17
Sun
7.8 h
Humidity
89%
Daylight
15 h
Sendai, Japan
Photo: Praveen PA · Pexels

Traveller notes on Sendai in July

Other months in Sendai

Forum posters describe late November in Sendai as approaching early winter, with occasional cold waves capable of pushing temperatures down noticeably. Posters discussing November in Japan more broadly describe it as one of the driest months of the year, with cooling temperatures, turning leaves and cooler nights as summer humidity fades. One visitor's mid-November-to-mid-December Tohoku trip reported only a few drizzly days with negligible humidity, and temperatures starting in the 20sC early on and dropping into the teens by month's end. Posters generally recommend checking detailed historical weather data closer to specific travel dates given how much conditions shift across the month. Posters generally rate November as a comfortable, generally dry time to visit Sendai, with real cooling as the month progresses.
Tripadvisor community · November · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe May in Japan generally as changeable but lovely - a run of a few sunny days followed by a day or two of rain is the typical pattern, with the rainy season proper not arriving until early-to-mid June, so early-to-mid May sees comparatively less rain than the month that follows. Standard packing advice covers the full range: short sleeves, long sleeves, a light jacket and a rain parka, since any of those could be needed within the same trip. One specific Sendai-related report cautioned that a nearby April visit hit hard rain and cold temperatures severe enough that the traveler skipped Sendai for Tokyo instead - a reminder that this transitional period can occasionally deliver a genuinely rough weather day even close to the generally favorable May window.
Tripadvisor community · May · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Sendai's card on the map.

Sendai climate normals — July

Daytime high28°C / 83°F🥵 hot
Nighttime low22°C / 71°F
Feels like (high)33°C / 91°F
Sea temperature25°C / 76°F🙂 pleasant
Rainfall174 mm / 6.9 in⛈ soaked
Rainy days17 days
Humidity89%💦 very humid
Dew point21°C / 70°F
Sunshine7.8 h/day
Daylight14.5 h
Wind10 km/h / 6 mph
Air quality (US AQI)49🍃 good

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

Crowds in Sendai 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.

Peak crowdsShiogama Minato Matsuri, Summer break (natsuyasumi) in Japan, school holidays in 4 of the markets that fill it(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Sendai'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).

Fair weatherSendai's weather peaks April–June, best around May.

JFMAMJJASOND

Best weatherFair weatherToughest weather

What's on in Sendai in July

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

  • Festival

    Shiogama Minato Matsuri

    19–20 JulMajor festivalCrowded

    Shiogama, under half an hour from Sendai, carries its shrine down the steep stairs on Marine Day and sails it round Matsushima Bay with a fleet of dragon and phoenix boats; fireworks light the bay the night before. Source ↗

What's on around the world in July →

Nearby, and something's on

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

Where is Sendai?

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Sendai in July — FAQ

Is July a good time to visit Sendai?
July in Sendai: hot, soaked, with clean air — fine if you can take 17 rainy days. It ranks #8 of 12 months for Sendai on SeasonMap's comfort score (65/100).
What is the weather like in Sendai in July?
In July, Sendai averages a daily high of 28.1°C and a low of 21.5°C, with about 174.4 mm of rain over roughly 17.3 rainy days.
What is the air quality in Sendai in July?
Sendai has a mean US Air Quality Index of about 49 in July.

Within 300 km: Nozawa Onsen's Summer gondola season around 15 Jul – 25 Oct, and Karuizawa's Tsuyu and the fog around 10 Jun – 15 Jul.