Chase the autumn leaves in Japan
Japan is one of these cases which turns into a gold, yellow and orange fairy tale starting from September. And we can honestly say: We cannot imagine a more beautiful season to visit Japan.
Atami Weather in September
Atami in September sees high temperatures, with highs around 27°C (81°F) and overnight lows of 21°C (70°F). Rainfall is at its peak this month, around 261 mm (10 in) on average, so waterproofs are essential.
Rainfall in Atami in September
Atami is in the rainy season in September, with rain on around 19 days and an average of 261 mm (10 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.
Temperature in Atami in September
Atami in September gets highs of 27°C (81°F) during the day and drops to 21°C (70°F) at night. Experience the summer season in September. Overall, the month follows a fairly predictable daily temperature pattern. At 21°C (70°F) overnight, nights are warm enough to sit outside comfortably in light clothing.September in Atami has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Atami Temperature in September
Min Temperature
21°C (70°F)
Max Temperature
27°C (81°F)
Chance of Rain
62%
Precipitation
261 mm (10 in)
Rainy days
19 days
Humidity
68% *
* Data from: Mount Fuji, Japan (42 KM, 26 Miles).
Atami Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Atami - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Atami typically drop from around 28°C (82°F) at the start of September to approximately 24°C (75°F) by the end. Nights are pleasant, with lows typically ranging from 16°C (61°F) to 21°C (70°F).
Average temperatures in September
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 September
Historical weather records for Atami in September
Browse day-by-day weather records for Atami spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Atami historical weather extremes in September
Based on 50 years of weather observations in Atami between 1976 and 2026, these are the recorded extremes.
- On September 11, 1995, temperatures climbed to 35°C (95°F), marking the warmest September day on record.
- On September 27, 1980, Atami saw its coldest September day with temperatures maxing out at 16°C (61°F).
Best Places in Japan in September
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in September →
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).
What to Wear in Atami in September
Warm weather calls for comfortable, breathable clothing in September. 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.
What To Do in Atami in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Atami 3-Day Forecast
More climate data for Atami
See the full Atami climate overview or explore weather in Japan.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Chase the autumn leaves in Japan
Walk the 88 temple circuit
We recommend walking the 88 temple circuit from April til October. Although June, July and August can be a bit wet, hot and humid.
The famous bamboo forests of Arashiyama
The famous bamboo forests of Arashiyama lie just outside the city center of Kyoto and is unique in the world. If you look at photos of this bamboo forest, it looks like you have landed in a fairy-tale world.
10 reasons why you should visit Japan in winter
Here are 10 reasons why you should plan a winter trip to Japan. During this period, popular sights are less busy and prices for flights and hotels much cheaper.