Okinawa islands

Japan Weather in August

Average temperatures, rainfall, sunshine and the best places to visit in Japan in August.

Planning a trip to Japan this August? Here's what you need to know about the weather:

What to Expect in Japan in August

In August, Japan experiences a range of weather conditions, with temperatures that range from pleasant to very warm and precipitation levels ranging from moderate to heavy. It's the height of summer.

Temperatures

Based on our climate data spanning from 1990-2020, the average maximum temperature is pleasant in Nemuro at 19°C (66°F) to very warm in Moriguchi at 34°C (93°F). Nighttime temperatures generally drop to 25°C (77°F) in Moriguchi and 16°C (61°F) in Nemuro. In Japan, August typically stands out as the hottest month of the year. If you're planning a visit during this time, it would be wise to come prepared. Packing light and breathable summer cloths will ensure you stay comfortable throughout your stay.

For specific regional insights in Japan, refer to the map provided below.

Precipitation

In August, precipitation varies across different areas. From moderate rainfall in Choshi with an average of 92 mm (3.6 in) to heavy rainfall in Otari with 291 mm (11 in).

Average sunshine

Most areas see decent amounts of sunshine this month. Tokyo gets around 177 hours of sunlight, providing a pleasant balance of sun and clouds. If you'd prefer more guaranteed sunshine, our weather planner can show you sunnier spots around the world.

Explore Japan by month

Pick a month to see the average temperature, rainfall and sunshine in Japan - and find the best time to visit. (based on Tokyo)

Best Places to Visit in Japan in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Japan.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Japan

What is the weather like in August for some of the most popular destinations in Japan?

Temperature range in Japan (August)

Precipitation variation in Japan (August)

Tokyo

In August Tokyo generally has very high temperatures with maximum daytime temperatures around 32°C (90°F), minimum nighttime temperatures around 25°C (77°F) and high monthly rainfall. So on average the conditions are good that month.

July
August
September
Max temperature
30°C (86°F)
32°C (90°F)
28°C (82°F)
Min temperature
23°C (73°F)
25°C (77°F)
21°C (70°F)
Monthly sun hours
152 hours
177 hours
128 hours
Monthly rainfall
151 mm (5.9 in)
116 mm (4.6 in)
195 mm (7.7 in)
Monthly rainy days
19 days
16 days
19 days
Weather conditions

Kyoto

In August Kyoto generally has very high temperatures with maximum daytime temperatures around 33°C (91°F), minimum nighttime temperatures around 23°C (73°F) and high monthly rainfall. So on average the conditions are good that month.

July
August
September
Max temperature
31°C (88°F)
33°C (91°F)
29°C (84°F)
Min temperature
22°C (72°F)
23°C (73°F)
19°C (66°F)
Monthly sun hours
145 hours
185 hours
140 hours
Monthly rainfall
241 mm (9.5 in)
148 mm (5.8 in)
202 mm (8 in)
Monthly rainy days
18 days
17 days
18 days
Weather conditions

Osaka

In August Osaka generally has very high temperatures with maximum daytime temperatures around 34°C (93°F), minimum nighttime temperatures around 25°C (77°F) and high monthly rainfall. So on average the conditions are mixed that month.

July
August
September
Max temperature
32°C (90°F)
34°C (93°F)
30°C (86°F)
Min temperature
24°C (75°F)
25°C (77°F)
21°C (70°F)
Monthly sun hours
182 hours
223 hours
156 hours
Monthly rainfall
184 mm (7.2 in)
117 mm (4.6 in)
176 mm (6.9 in)
Monthly rainy days
18 days
16 days
18 days
Weather conditions

Hakuba

In August Hakuba generally has high temperatures with maximum daytime temperatures around 27°C (81°F), minimum nighttime temperatures around 19°C (66°F) and heavy monthly rainfall. So on average the conditions are less favorable that month.

July
August
September
Max temperature
26°C (79°F)
27°C (81°F)
23°C (73°F)
Min temperature
18°C (64°F)
19°C (66°F)
15°C (59°F)
Monthly sun hours
135 hours
166 hours
115 hours
Monthly rainfall
400 mm (16 in)
289 mm (11 in)
306 mm (12 in)
Monthly rainy days
22 days
20 days
20 days
Weather conditions

Hakone

In August Hakone generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 23°C (73°F) and heavy monthly rainfall. So on average the conditions are good that month.

July
August
September
Max temperature
28°C (82°F)
29°C (84°F)
26°C (79°F)
Min temperature
22°C (72°F)
23°C (73°F)
20°C (68°F)
Monthly rainfall
224 mm (8.8 in)
181 mm (7.1 in)
272 mm (11 in)
Monthly rainy days
20 days
17 days
19 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Japan.

Popular cities in August

Day & night temperatures, rainfall and average weather in Japan in August.

City Weather Day temp Night temp Rainfall
Tokyo 32°C (90°F) 25°C (77°F) 116 mm (4.6 in)
Osaka 34°C (93°F) 25°C (77°F) 117 mm (4.6 in)
Kyoto 33°C (91°F) 23°C (73°F) 148 mm (5.8 in)
Hakone 29°C (84°F) 23°C (73°F) 181 mm (7.1 in)
Hiroshima 32°C (90°F) 24°C (75°F) 127 mm (5 in)
Nara 34°C (93°F) 24°C (75°F) 113 mm (4.4 in)

Japan weather in August: frequently asked questions

What is the weather like in Japan in August?

Japan typically experiences mixed weather in August, part of the summer season. Daytime highs in Tokyo average around 32°C (90°F), and temperatures drop to about 25°C (77°F) at night.

What is the average temperature in Japan in August?

In Tokyo, the average daytime high in August is 32°C (90°F), while nighttime temperatures drop to around 25°C (77°F).

Does Japan get a lot of rain in August?

Japan sees substantial rainfall in August. Tokyo typically averages about 116 mm (4.6 in), a mix of wet and dry days, but bring an umbrella.

Is August a Good Time to Visit Japan?

In our opinion, August is a good time to visit Japan with overall good weather in Tokyo.

On average, the best time to visit Japan is in May, June and November with generally very good weather in Tokyo. In contrast, January tends to have less favorable weather conditions.

Interested in more climate information?

We have much more information about the climate in Japan.

Weather and climate has detailed information for every country in the world. Are you going to Japan? Get detailed historical weather averages for many cities in Japan.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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