What is the weather like in Yokohama in September?

Expect temperatures between 21°C and 26°C with 34% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Yokohama in September?

Yokohama in September scores 56/100 based on 30 years of climate data. Good option with minor considerations.

Who should visit Yokohama in September?

September in Yokohama is ideal for: Beach lovers, Cultural tourists, Business travelers.

Yokohama Weather in September | 30-Year Forecast

Avg High

26°C

Hottest around day 1

Avg Low

21°C

Coolest around day 30

Rainy Days

29days

34% avg rain chance

Sunshine

8hrs/day

Autumn season

Sea Temperature in September

Coastal Waters(Ocean)

26.9°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

Coastal Waters

Ocean

Yokohama coastline

Yokohama September Weather Calendar

Click any day to see detailed weather information

Day 1

Cloudy

29°C34%

Day 2

Cloudy

28°C37%

Day 3

Cloudy

28°C40%

Day 4

Cloudy

28°C38%

Day 5

Cloudy

28°C38%

Day 6

Rainy

28°C42%

Day 7

Cloudy

28°C37%

Day 8

Cloudy

28°C34%

Day 9

Cloudy

28°C33%

Day 10

Cloudy

28°C33%

Day 11

Cloudy

28°C26%

Day 12

Cloudy

28°C25%

Day 13

Cloudy

27°C27%

Day 14

Cloudy

27°C30%

Day 15

Cloudy

27°C33%

Day 16

Cloudy

27°C37%

Day 17

Cloudy

27°C40%

Day 18

Cloudy

27°C39%

Day 19

Cloudy

27°C36%

Day 20

Cloudy

26°C33%

Day 21

Cloudy

26°C34%

Day 22

Cloudy

25°C34%

Day 23

Cloudy

25°C35%

Day 24

Cloudy

25°C34%

Day 25

Cloudy

24°C34%

Day 26

Cloudy

24°C30%

Day 27

Cloudy

24°C28%

Day 28

Cloudy

24°C28%

Day 29

Cloudy

24°C33%

Day 30

Cloudy

24°C36%

Essential Travel Info for Yokohama

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

JPY

¥ Japanese yen

Language

Japanese

Driving

Left side

Connect

Chinatown offers free WiFi under the net...

Safety

Very High Safety

GPI: 1.336

Travel Intelligence

Exclusive flight analytics & health data for Yokohama

Smart Flight Estimator

Airport-to-Airport Logistics

unlock smart flight estimates

Add your home location in settings to see airport details.

Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Major Hub

85/ 100

Traffic Index

Extremely busy airport

Peak Daily Arrivals

slots per day

Peak

Mar

Low

Jul

Monthly Traffic Distribution

687

Jan

692

Feb

695

Mar

636

Apr

631

May

548

Jun

483

Jul

624

Aug

624

Sep

624

Oct

624

Nov

624

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 Yokohama?

👌Good option with minor considerations(56/100)

Short Answer

September brings storm season risk to Yokohama. While typical weather is 26°C with 34% rain, plan for potential disruptions and secure cancellation-friendly bookings.

Decision Factors

Typhoon season active

Western Pacific zone - expect potential typhoon activity

Vaccinations required

Yellow Fever

Warm tropical seas

26.9°C sea temperature - Swimming Pool

Seismically active region

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

Very high humidity

81% average humidity

Peak tourist season

90% of annual peak - expect crowds and peak prices

Good For

🏖️
Beach lovers
26.9°C warm seas and 34% rain probability
🏛️
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,Yokohama in September averages 26°C with 34% precipitation probability."

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

Frequently Asked Questions: Yokohama in September

What are the temperatures in Yokohama in September?

Daytime highs average 26°C, nights drop to 21°C. Temperatures remain fairly consistent.

How many rainy days in Yokohama in September?

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

What to wear in Yokohama in September?

Comfortable casual wear with a light jacket for evenings.

Is September peak season in Yokohama?

This is shoulder season—moderate prices and manageable crowds.

Yokohama Weather in September

Sea Temperature in September

Yokohama September Weather Calendar

Essential Travel Info for Yokohama

Travel Intelligence

Smart Flight Estimator

Flight Connectivity Analysis

Monthly Traffic Distribution

Key Connections

Health & Safety Advisory

COVID-19

Hepatitis A

Hepatitis B

Japanese Encephalitis

Measles

Rabies

Decision Factors

Good For

Who Should Avoid

Related Guides

Frequently Asked Questions: Yokohama in September

What are the temperatures in Yokohama in September?

How many rainy days in Yokohama in September?

What to wear in Yokohama in September?

Is September peak season in Yokohama?