Sendai weather in August
Temperature, rain and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Good
Best time to visit: May – June, August – October
What is the weather like in Sendai in August?
In August, Sendai is warm: daytime highs average 27 °C, and even at night it stays warm at around 21 °C. Expect around 5 hours of sunshine a day. It rains often – on about 15 days, adding up to 167 mm. The air is often humid and muggy. All in all, August is a good month for a holiday in Sendai.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 56 | 61 | 62 |
| Day | 25° | 27° | 24° |
| Night | 20° | 21° | 18° |
| Sun | 4 h | 5 h | 4 h |
| Rain days | 17 | 15 | 15 |
More details for August
- Daylight
- 13 h 42 min04:51 – 18:32
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 28 daysdew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 72 %on averageAll months
- Hot days
- 4 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+9Asia/Tokyo
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %28 %
- Few rainy daysweight 30 %19 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Sendai in August: quick answers
Is Sendai hot in August?
Warm rather than hot: in August, daytime highs in Sendai average 27 °C and nights cool to about 21 °C. On about 4 days the thermometer climbs to 30 °C or more.
Does it rain much in Sendai in August?
It rains often – on about 15 days, adding up to 167 mm.
Sendai month by month
The whole year in SendaiAll destinations: JapanWhere to go in August
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