Sendai weather in August 2025

Expect 28°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Sendai in August. Check more long-term weather averages for Sendai in August before you book your next holiday to Japan in 2025/2026.

  • 28°C maximum daytime temperature in August in Sendai28
    28°C max day temperature
  • 6 hours of sunshine per day
  • 19 days with some rainfall in August in Sendai19
    19 days with some rainfall
  • 21°C minimum night-time temperature in August in Sendai21
    21°C min night temperature
  • 14 hours of daylight per day in August in Sendai14
    14 hours of daylight per day
  • Moderate heat & humidity in August in SendaiM
    Moderate heat & humidity
  • 153 mm monthly rainfall in August in Sendai153
    153 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Sendai9
    9 (Very High) UV index
  • 24°C sea temperature in August in Sendai24
    24°C sea temperature

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The August weather guide for Japan (Sendai) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Sendai in August?

Daytime temperatures usually reach 28°C in Sendai in August with moderate heat and humidity, falling to 21°C at night.

How sunny is it in Sendai in August?

There are normally 6 hours of bright sunshine each day in Sendai in August - that's 40% of daylight hours.

How warm is the sea around Sendai in August?

The average sea temperature around Sendai in August is 24°C.

Does it rain in Sendai in August?

There are usually 19 days with some rain in Sendai in August and the average monthly rainfall is 153mm.

What is the chance of a typhoon in Sendai in August?

On average 1.8 days in August in Sendai are likely to be affected by the passage of one or more tropical storms.

Sendai August sunrise & sunset times

Browse the sunrise and sunset times for Sendai in August 2025. Select a month to view Sendai sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:39 18:46
Saturday, 16th August 2025 04:52 18:29
Sunday, 31st August 2025 05:05 18:08

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