Tokyo Weather in August
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Asia › 🇯🇵 Japan › Tokyo
Updated: March 2026
Is August a Good Time to Visit Tokyo?
August is a good time to visit Tokyo (6/10). With 9 daily sunshine hours and only 11 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 3rd sunniest of the year in Tokyo. Culture-focused travellers and those who prefer lighter crowds will find August a practical choice, with prices running lower than peak April without sacrificing all the good weather. Obon Festival takes place this month, adding cultural value for those planning around it. The main practical note: Tokyo's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: accommodation is generally available without long lead times, and flight prices are typically lower than peak season. Flexible travellers will find the best deals by booking 2-4 weeks ahead. Mid-week arrivals consistently unlock lower hotel rates than weekend check-ins.
Step off the plane in Tokyo in August and the air meets you at around 30°C, carrying the kind of warmth that makes you reach for sunglasses before your bag is off the belt. By the time evening arrives and temperatures settle near 24°C, the city takes on a different character entirely. With 9 hours of daylight sun on offer, August gives you the raw material for a genuinely memorable trip.
30°C
Avg High
24°C
Avg Low
11 days
Rain Days
9h
Sunshine
65%
Humidity
Temperature in Tokyo in August
The 6°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. Humidity averages 65%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. UV index averages 9 this month, classed as high to very high. SPF 30+ sunscreen, a brim hat, and sunglasses are not optional between 10am and 4pm. Wind averages 20 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 86°F average high, 75°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Temperature in August
Monthly Precipitation (mm)
What to Wear in Tokyo in August
Packing for Tokyo in August means dressing for 30°C days and 24°C evenings. A lightweight linen or cotton shirt with loose-fit trousers or a sundress handles the 30°C daytime heat. Evening temperatures settle at 24°C, a modest 6°C drop that a light cardigan or denim jacket covers. For footwear, breathable walking sandals work for casual exploration, but closed-toe trainers are better for uneven surfaces in the historic centre. A compact foldable umbrella weighs almost nothing and earns its keep across 11 potential rainy days. For temple and religious site visits, carry a lightweight scarf or sarong to cover shoulders and knees, required at most major sites across the region.
Local tip: Temple and religious site visits require covered shoulders and knees in most of Tokyo's heritage areas. A lightweight scarf or sarong weighs almost nothing and solves the problem instantly.
Events in Tokyo in August
Obon Festival
CulturalMid-August (13-16)
Buddhist tradition of honoring ancestral spirits. Many Tokyo residents return to hometowns, making the city unusually quiet. Bon Odori folk dancing events in local parks.
TokyoWhat to Pack for Tokyo in August
Based on 30°C average highs and 11 rainy days
- Light layers for morning and evening
- Breathable T-shirts and comfortable trousers
- UV-protective sunglasses
- Quick-dry travel towel
- Anti-chafe balm for long walking days
- Moisture-wicking synthetic fabrics for active days
- Compact folding umbrella
- Waterproof outer layer or packable rain jacket
- Quick-dry clothing that recovers fast after a shower
- SPF 30+ sunscreen
- Comfortable walking shoes (a second pair lets the first air out overnight)
- Universal travel adapter
- Small day pack for city exploration
- Reusable water bottle
Best Activities in Tokyo in August
- Early morning walk through Tokyo's historic market districtBest before 9amTemperatures are still manageable at 26°C before the midday heat builds
- Open-air rooftop dining at sunsetFrom 6pm onwardsThe 30°C daytime heat drops noticeably after sunset, making al fresco dining comfortable
- Waterfront promenade or harbour walkEarly morning or after 5pmSea breezes cut through the humidity, making coastal routes the most pleasant in heat
- Guided cycling tour of the old quarterFirst tour of the day (7-9am)The low-traffic window before tourist crowds and the cooler morning air make this the prime riding slot
- Afternoon in a world-class museum or galleryAfternoon (2-5pm)Pairs well with outdoor morning activities and provides a mid-day rest from sightseeing
- Coffee-house or traditional cafe culture experienceMid-morning or post-lunchA cultural ritual in this region that rewards slow appreciation regardless of weather
- Evening live music, theatre, or opera performanceEvening shows typically at 7-9pmConsistent evening temperatures make getting to and from evening venues comfortable
- Attend Obon FestivalCheck specific event datesA once-yearly event that defines this city in this month and draws visitors from around the world
- Seek out chilled local specialities: cold-brew tea, ice desserts, or chilled seafood at street-level stallsAny time; most atmospheric in evening marketsHot-weather street food culture peaks in August, with vendors setting up specifically for warm evenings
Why is Tokyo warm in August?
Tokyo's August heat is driven by the Asian summer monsoon system, as the low-pressure cell that forms over the heated landmass draws warm, humid air from the oceans. The result is temperatures averaging 30°C with high moisture in the air. Overnight temperatures remain elevated at 24°C, as clouds and humidity prevent the earth from radiating heat away after sunset. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate -- wear sunscreen. UV 6-7: High -- hat and SPF 30+ essential. UV 8-10: Very High -- limit midday exposure. UV 11+: Extreme -- seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry -- skin and throat may feel parched. 40-60%: Comfortable -- ideal for most people. 60-80%: Sticky -- light, breathable fabrics recommended. Above 80%: Muggy -- heat feels more intense; quick-dry clothing is essential.
Frequently Asked Questions: Tokyo in August
August ranks 3rd sunniest of the year in Tokyo, with an average 9 daily sunshine hours. The driest months are January, December, and February. August is the hottest month (30°C avg high); January is the coolest (8°C). From here, temperatures fall 4°C into September. Compared to last month (July: 28°C high, 13 rain days), August is warmer and drier. August is among the top three sunniest months to visit Tokyo.
Year-Round Climate
Plan Your Trip to Tokyo
Nearby Destinations with Similar Weather
These cities are within 500 km and experience broadly comparable weather conditions during the same calendar month, making them practical standalone alternatives or worthwhile additions to a longer regional itinerary.
Data Sources for Tokyo
Climate normals represent 30-year averages (1991-2020). Individual years may vary.