30YearWeather
Hiroshima in April
Hiroshima weather in April - Japan
🌤️Mild & Comfortable

Hiroshima Weather in April

Plan your April trip to Hiroshima, Japan. Based on 30 years of NASA data, expect temperatures of 18°C (high) to 9°C (low), with 27% rain probability and 8 hours of daily sunshine. The Coastal Waters averages 15°C in April. Pack rain gear for around 19 rainy days.

Avg High
18°C

Hottest around day 30

Avg Low
9°C

Coolest around day 1

Rainy Days
19days

27% avg rain chance

Sunshine
8hrs/day

Spring season

Sea Temperature in April

Coastal Waters(Ocean)

14.5°C

Monthly Average

Water Feel
🥶Polar Plunge

Consider a wetsuit for extended swimming

Swim Rating
❄️Cold water hazard

Based on average sea surface temperature

Body of Water
Coastal Waters

Ocean

Hiroshima coastline

Hiroshima April Weather Calendar

Click any day to see detailed weather information

Currency

JPY

¥ Japanese yen

Language

Japanese

Driving

Left side

Connect

Public wireless LAN is available at publ...

Safety

Very High Safety

GPI: 1.336

Travel Intelligence

Exclusive flight analytics & health data for Hiroshima

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

Remote
12/ 100
Traffic Index

Off the beaten path

Peak Daily Arrivals

0

slots per day

Peak

May

Low

Oct

Monthly Traffic Distribution

26
Jan
28
Feb
29
Mar
29
Apr
29
May
26
Jun
27
Jul
27
Aug
26
Sep
26
Oct
28
Nov
27
Dec
Traffic Level
Low Season

Key Connections

Tokyo (HND)
Sendai (SDJ)
Chitose / Tomakomai New Chitose (CTS)
Seoul Incheon (ICN)
Naha (OKA)

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 April a Good Time to Visit Hiroshima?

👌Worthwhile timing with some trade-offs
Short Answer

April brings storm season risk to Hiroshima. While typical weather is 18°C with 27% 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

Peak tourist season

100% of annual peak - expect crowds and peak prices

Cold sea - swimming challenging

14.5°C sea temperature - Polar Plunge

Health precautions needed

Be aware of: Leptospirosis, Hantavirus, Tuberculosis (TB)

Plenty of sunshine

8.8h of sunshine daily

Good For

  • 👨‍👩‍👧‍👦
    Families with children

    Comfortable 18.2°C temperatures and low 27% rain risk

  • 👴
    Elderly travelers

    Comfortable 18.2°C temperature range with manageable humidity

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

  • 🌡️
    Heat-sensitive visitors

    Manageable 18.2°C without oppressive humidity

Who Should Avoid

  • 🏖️
    Beach lovers

    Sea temperature only 14.5°C - too cold for comfortable swimming

  • 💰
    Budget travelers

    Peak season means premium prices everywhere

  • 💼
    Business travelers

    Storm season may cause flight disruptions

900 observations30-year historical data
Confidence: 99%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Hiroshima in April averages 18°C with 27% precipitation probability."

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

Frequently Asked Questions: Hiroshima in April

What are the temperatures in Hiroshima in April?

Daytime highs average 18°C, nights drop to 9°C. Temperatures remain fairly consistent.

How many rainy days in Hiroshima in April?

Expect around 19 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Hiroshima in April?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is April peak season in Hiroshima?

This is shoulder season—moderate prices and manageable crowds.