What is the weather like in Tokyo in September?

Expect temperatures between 20°C and 27°C with 35% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Tokyo in September?

Tokyo in September scores 53/100 based on 30 years of climate data. Worthwhile timing with some trade-offs.

Who should visit Tokyo in September?

September in Tokyo is ideal for: Cultural tourists, Business travelers.

Tokyo Weather in September | 30-Year Forecast

Avg High

27°C

Hottest around day 1

Avg Low

20°C

Coolest around day 30

Rainy Days

29days

35% avg rain chance

Sunshine

8hrs/day

Autumn season

Sea Temperature in September

Pacific Ocean(太平洋)

27.4°C

Monthly Average

Water Feel

🌴Tropical

Perfect for swimming and water sports

Swim Rating

✅Excellent for swimming

Based on average sea surface temperature

Body of Water

Pacific Ocean

太平洋

Tokyo coastline

Essential Travel Info for Tokyo

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

JPY

¥ Japanese yen

Language

Japanese

Driving

Left side

Connect

Getting a SIM card in Japan requires jum...

Safety

Very High Safety

GPI: 1.336

Travel Intelligence

Exclusive flight analytics & health data for Tokyo

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Major Hub

99/ 100

Traffic Index

Extremely busy airport

Peak Daily Arrivals

slots per day

Peak

Aug

Low

Nov

Monthly Traffic Distribution

693

Jan

697

Feb

704

Mar

638

Apr

613

May

959

Jun

958

Jul

976

Aug

968

Sep

972

Oct

279

Nov

950

Dec

Traffic Level

Low Season

Key Connections

Fukuoka (FUK)

Chitose / Tomakomai New Chitose (CTS)

Naha (OKA)

Osaka (ITM)

Kagoshima (KOJ)

Health & Safety Advisory

CDC travel health recommendations

8 Recommendations

COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis A

Consider hepatitis A vaccination for most travelers. It is recommended for travelers who will be doing higher risk activities, such as visiting smaller cities, villages, or rural areas where a traveler might get infected through food or water. It is recommended for travelers who plan on eating street food.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Japan. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Japan.

Japanese Encephalitis

Recommended for travelers whoAre moving to an area with Japanese encephalitis to liveSpend long periods of time, such as a month or more, in areas with Japanese encephalitisFrequently travel to areas with Japanese encephalitisConsider vaccination for travelersSpending less than a month in areas with Japanese encephalitis but will be doing activities that increase risk of infection, such as visiting rural areas, hiking or camping, or staying in places without air conditioning, screens, or bed netsGoing to areas with Japanese encephalitis who are uncertain of their activities or how long they will be thereNot recommended for travelers planning short-term travel to urban areas or travel to areas with no clear Japanese encephalitis season.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in Japan.If rabies exposures occur while in Japan, rabies vaccines are typically available throughout most of the country.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

+2 more

Source: CDC Travelers' Health

View Complete Health Guide

Is September a Good Time to Visit Tokyo?

👌Worthwhile timing with some trade-offs(53/100)

Short Answer

Tropical storm season is active in Tokyo during September. Average conditions (27°C, 35% rain) can be interrupted by severe weather. Monitor forecasts closely.

Decision Factors

Typhoon season active

Western Pacific zone - expect potential typhoon activity

Vaccinations required

Yellow Fever

Warm tropical seas

27.4°C sea temperature - Tropical Bath

Seismically active region

79 earthquakes recorded in this month (30-year data)

Poor air quality: Unhealthy

Unhealthy. Everyone should reduce outdoor activities.

Very high humidity

81% average humidity

Good For

🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

💰
Budget travelers
Peak season means premium prices everywhere
👴
Elderly travelers
81% humidity creates difficult conditions
💼
Business travelers
Storm season may cause flight disruptions

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Tokyo in September averages 27°C with 35% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Tokyo in September

What are the temperatures in Tokyo in September?

Daytime highs average 27°C, nights drop to 20°C. Temperatures remain fairly consistent.

How many rainy days in Tokyo in September?

Expect around 29 days with measurable rainfall. An umbrella is advisable.

What to wear in Tokyo in September?

Comfortable casual wear with a light jacket for evenings.

Is September peak season in Tokyo?

This is shoulder season—moderate prices and manageable crowds.

Tokyo Weather in September