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
#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

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.
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.
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Sendai climate normals — July
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)
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.
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 festivalCrowdedShiogama, 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 ↗
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?
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.