World → Japan → Hiroshima

Weather in Hiroshima — today

Tomorrow Day after tomorrow 3 days Week 14 days Month forecast Weather archive

Now in Hiroshima

🌤️

+28°

Mostly clear

Feels like +33° · humidity 73%

Today 12.9: +28° / +23°

🕐 16:25

Wind

4 km/h

UV index

Air (AQI)

54 · Moderate

Precipitation

38%

Humidity

73%

Pressure

1018 hPa

Sunrise / sunset

05:50 / 18:21

Sea temperature

🌊 +28°

👕 What to wear today

Warm — a T-shirt and light trousers or shorts.

Feels warmer by 5°

Weather for an activity:

🎣 fishing 🏖️ the beach 🏃 a run 📸 a photo shoot 🚶 a walk

Detailed weather information for Hiroshima

Today, 12 September, Saturday, in Hiroshima (Japan): partly cloudy, warm. During the day the air will warm up to +28°, at night around +23°. Due to high humidity it feels like +33°. Wind up to 7 km/h. Brief rain is possible — an umbrella won't hurt. Light summer clothing will do — a T-shirt and shorts or light trousers. The sea has warmed up to +28° — great for swimming. The sun will rise at 05:50 and set at 18:21 — daylight lasts 13 hours.

Hourly weather in Hiroshima

💧 The bars at the bottom show the hourly precipitation probability. Shaded areas of the chart are the dark hours (before sunrise 🌅 and after sunset 🌇).

Weather in Hiroshima for 14 days

Tap a day to expand it by time of day and open the full forecast. The bar shows the range from the night low (left) to the day high (right).

▶

Today 12.9

⛅

💧 38%

+23° +28°

Morning

⛅

+25°

Day

⛅

+28°

Evening

🌇

+27°

Night

🌙

+23°

Partly cloudy · precipitation 38% · wind up to 7 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Tomorrow 13.9

🌦️

💧 100%

+24° +30°

Morning

🌤️

+25°

Day

🌦️

+30°

Evening

🌇

+27°

Night

🌙

+24°

Drizzle · precipitation 100% · wind up to 6 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Mon 14.9

🌦️

💧 99%

+23° +28°

Morning

🌦️

+25°

Day

🌦️

+28°

Evening

🌇

+27°

Night

🌙

+23°

Light rain · precipitation 99% · wind up to 7 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Tue 15.9

🌧️

💧 87%

+22° +27°

Morning

🌧️

+24°

Day

🌧️

+27°

Evening

🌇

+26°

Night

🌙

+22°

Rain · precipitation 87% · wind up to 11 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Wed 16.9

⛈️

💧 72%

+21° +29°

Morning

⛈️

+24°

Day

⛈️

+29°

Evening

🌇

+27°

Night

🌙

+21°

Thunderstorm · precipitation 72% · wind up to 10 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Thu 17.9

☁️

💧 31%

+18° +29°

Morning

☁️

+22°

Day

☁️

+29°

Evening

🌇

+26°

Night

🌙

+18°

Overcast · precipitation 31% · wind up to 11 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Fri 18.9

🌤️

💧 76%

+21° +31°

Morning

🌤️

+25°

Day

🌤️

+31°

Evening

🌇

+29°

Night

🌙

+21°

Mostly clear · precipitation 76% · wind up to 8 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Sat 19.9

🌦️

💧 65%

+22° +32°

Morning

🌦️

+26°

Day

🌦️

+32°

Evening

🌇

+30°

Night

🌙

+22°

Drizzle · precipitation 65% · wind up to 10 km/h.
☀️ Very hot. Drink more water, avoid the midday sun, sunscreen is needed.

▶

Sun 20.9

🌦️

💧 46%

+23° +32°

Morning

🌦️

+26°

Day

🌦️

+32°

Evening

🌇

+30°

Night

🌙

+23°

Drizzle · precipitation 46% · wind up to 10 km/h.
☀️ Very hot. Drink more water, avoid the midday sun, sunscreen is needed.

▶

Mon 21.9

🌦️

💧 61%

+24° +32°

Morning

🌦️

+27°

Day

🌦️

+32°

Evening

🌇

+30°

Night

🌙

+24°

Drizzle · precipitation 61% · wind up to 8 km/h.
☀️ Very hot. Drink more water, avoid the midday sun, sunscreen is needed.

▶

Tue 22.9

🌦️

💧 65%

+25° +31°

Morning

🌦️

+27°

Day

🌦️

+31°

Evening

🌇

+30°

Night

🌙

+25°

Drizzle · precipitation 65% · wind up to 16 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Wed 23.9

🌦️

💧 53%

+23° +29°

Morning

🌦️

+25°

Day

🌦️

+29°

Evening

🌇

+28°

Night

🌙

+23°

Drizzle · precipitation 53% · wind up to 53 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Thu 24.9

☁️

💧 35%

+21° +30°

Morning

☁️

+24°

Day

☁️

+30°

Evening

🌇

+28°

Night

🌙

+21°

Overcast · precipitation 35% · wind up to 14 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Fri 25.9

☁️

💧 22%

+18° +28°

Morning

☁️

+22°

Day

☁️

+28°

Evening

🌇

+26°

Night

🌙

+18°

Overcast · precipitation 22% · wind up to 14 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

🗺️ Precipitation radar

Precipitation radar (RainViewer) over a clean base map — updates every 5–10 minutes. Colours show nearby precipitation; if there is none, the map is simply clear — that is normal. Zoom with + / −.

Rain intensity:lightmoderateheavy

🎯 What to do in this weather — indices of the day

Comfort score from 0 (bad) to 100 (excellent), calculated from the day's weather. For “rain” and “UV” a percentage/risk level is shown.

🏖️ Beach

65 / 100

for sea and sun · Average

🏊 Swimming

50 / 100

water 28° · Average

🏃 Running

20 / 100

comfort for running · So-so

🧴 UV

27%

moderate · low

☂️ Rain

38%

possible · moderate

✨ Stars

61 / 100

evening visibility · Average

🧺 Laundry drying

28 / 100

will dry outside · So-so

🚗 Car wash

49 / 100

no rain expected · Average

🌫️ Air quality

Moderate air

European AQI

PM2.5: 12PM10: 13O₃: 114NO₂: 5

Moderate. Those sensitive to dust should be more careful during long outdoor exercise.

🌅 Sun, moon and sea

Sunrise

05:50

Sunset

18:21

Golden hour

17:48

Daylight

13 h (-2 min vs yesterday)

Sea temperature

+28°

🌊 calm, waves 0.1 m.

Hiroshima climate by month

Long-term averages. Hover over a bar for details. The forecast for a specific month is a combination of the climate normal and the model forecast for the coming weeks.

+8°

+1°

Jan

+9°

+2°

Feb

+13°

+4°

Mar

+18°

+9°

Apr

+23°

+14°

May

+26°

+18°

Jun

+29°

+23°

Jul

+30°

+24°

Aug

+27°

+20°

Sep

+22°

+14°

Oct

+16°

+8°

Nov

+11°

+4°

Dec

swipe sideways →

Bar color shows temperature:frostcoolcomfortablewarmhot— best months to visit

Month	Day	Night	Sea	Precipitation	What to pack and what makes the month notable (events, nuances)
January	+8°	+1°	+12°	55 mm	A cold month: +8° by day, long walks get uncomfortable. 🧥 a warm jacket. The water is cold (+12°) — swimming is for the brave. This is the coldest month of the year.
February	+9°	+2°	+10°	69 mm	Cold: +9° by day, down to +2° at night — dress warmly. It's a rainy month (69 mm) — an umbrella is a must. 🧥 a warm jacket. The water is cold (+10°) — swimming is for the brave.
March	+13°	+4°	+11°	110 mm	A fresh month — +13° daytime, take a jacket for walks. Frequent rain (110 mm over the month) — keep indoor backup plans. 🧥 a warm jacket. The water is cold (+11°) — swimming is for the brave.
April	+18°	+9°	+14°	127 mm	The most pleasant season: +18° by day, comfortable all day long. One of the wettest months (127 mm): downpours can derail plans. 🙂 a sweater for the evening. The water is cold (+14°) — swimming is for the brave.
May	+23°	+14°	+18°	144 mm	One of the best times to visit: +23° by day, fresh nights. It's a rainy month (144 mm) — an umbrella is a must. 🙂 a sweater for the evening. Sea at +18° — swimmable, refreshing.
June	+26°	+18°	+22°	218 mm	Ideal weather: +26° daytime — neither hot nor cold. Frequent rain (218 mm over the month) — keep indoor backup plans. 😊 light summer clothing. Water at +22° — great for swimming. The longest daylight hours of the year — more time for everything.
July	+29°	+23°	+27°	254 mm	A comfortable month: +29° by day without exhausting heat. One of the wettest months (254 mm): downpours can derail plans. 😊 light summer clothing. Water at +27° — great for swimming. Statistically the wettest month of the year.
August	+30°	+24°	+29°	156 mm	Warm and comfortable: +30° by day, +24° at night. It's a rainy month (156 mm) — an umbrella is a must. 😊 light summer clothing. Water at +29° — great for swimming. This is the hottest month of the year in Hiroshima.
September	+27°	+20°	+28°	185 mm	Gentle warmth — about +27° daytime, great walking weather. Frequent rain (185 mm over the month) — keep indoor backup plans. 😊 light summer clothing. Water at +28° — great for swimming. Weather-wise, one of the three best months to visit.
October	+22°	+14°	+24°	110 mm	The most pleasant season: +22° by day, comfortable all day long. One of the wettest months (110 mm): downpours can derail plans. 🙂 a sweater for the evening. Water at +24° — great for swimming. Weather-wise, one of the three best months to visit.
November	+16°	+8°	+20°	72 mm	Cool: around +16° by day, you'll need a warm layer. It's a rainy month (72 mm) — an umbrella is a must. 🙂 a sweater for the evening. Sea at +20° — swimmable, refreshing. Weather-wise, one of the three best months to visit.
December	+11°	+4°	+15°	64 mm	A fresh month — +11° daytime, take a jacket for walks. Frequent rain (64 mm over the month) — keep indoor backup plans. 🧥 a warm jacket. The water is cold (+15°) — swimming is for the brave. The shortest daylight of the year — it gets dark early.

When to visit Hiroshima

✅ Recommended time to visit

🌟 Best time: September, October, November

Daytime air+16…+27°

Sea temperature+20…+28°

Precipitationoften

Why: comfortable +16…+27° by day, little rain.

⚠️ Doable, with caveats

🌤️ Shoulder season: January, February, April, May, June, August

Daytime air+8…+30°

Sea temperature+10…+29°

Precipitationoften

Why: noticeable rain risk (55–218 mm/month) — pack an umbrella and backup plans.

🔴 Not the best time

❄️ Cold season: March, July, December

Daytime air+11…+29°

Sea temperature+11…+27°

Precipitationoften

Why: cold and dark (+11…+29° by day, 10 h of daylight) — only if frost and short days don’t put you off.

Bottom line: the best time to visit Hiroshima is September – November, and the most comfortable months are September, October, November. The toughest months to visit are March, July, December: frequent rain.