Sendai Weather in August
August in Sendai brings high temperatures, with daytime highs of 28°C (82°F) and nights around 22°C (72°F). It's part of the rainy season, with 175 mm (6.9 in) of rainfall on average, so an umbrella or poncho is a good idea.
Rainfall in Sendai in August
Sendai is in the rainy season in August, with rain on around 19 days and an average of 175 mm (6.9 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.
Temperature in Sendai in August
August in Sendai brings typical temperatures with highs around 28°C (82°F) and lows of 22°C (72°F). August is known for being in the summer season. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 22°C (72°F) overnight, nights are warm enough to sit outside comfortably in light clothing. On average, it is the warmest month of the year.
Sunshine in Sendai in August
You can expect a moderate amount of sunlight, with approximately 148 hours. Even though this month is part of the wet season, you can still see the sun occasionally.
Wind Speed in Sendai in August
Average wind conditions reach 2 m/s (4 knots) in August. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.If you're a fan of comfortable temperatures and drier conditions, August is a great time to visit.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Sendai's climate page.
Sendai Temperature in August
Min Temperature
22°C (72°F)
Max Temperature
28°C (82°F)
Chance of Rain
64%
Precipitation
175 mm (6.9 in)
Rainy days
19 days
Humidity
81%
Windspeed
2 m/s (4 knots)
Sunshine
148 hours
Percentage Sunshine
37%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Sendai typically stay consistent throughout August, with daily highs averaging around 28°C (82°F). Nights are warm, with lows around 22°C (72°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Sendai in August
Browse day-by-day weather records for Sendai spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Sendai historical weather extremes in August
Based on 49 years of weather observations in Sendai between 1976 and 2025, these are the recorded extremes.
- On August 15, 2007, temperatures climbed to 37°C (99°F), marking the warmest August day on record.
- Sendai experienced its chilliest August day on August 31, 2009, reaching only 17°C (63°F).
- Sendai registered its coldest August night on August 7, 1980, with temperatures dropping to 14°C (57°F).
- Peak precipitation in August occurred on August 30, 1980, when 100 mm (3.9 in) of precipitation was measured.
Best Places in Japan in August
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in August →
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What to Wear in Sendai in August
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Sendai in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Sendai's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Sendai climate overview or explore weather in Japan.
