Osaka in April: weather, what to wear and events

Osaka weather in April

Averages for 1991–2020 at the JMA's Osaka station (23 m above sea level).

High: 19.9°C (68°F)
Low: 10.9°C (52°F)
Precipitation: 101.9 mm
Wet days: 9.2 days
Sunshine: 193 hours

Highs rise 5.7°C from March and climb another 5.0°C into May.

That is 1.4°C below Osaka's yearly average high of 21.3°C.

Of our 14 places with temperature records, Osaka is the 4th warmest in April: 0.2°C cooler than Nagoya and level with Fukuoka.

April is Osaka's 5th driest month (101.9 mm).

Of our 15 places, Osaka has the 3rd lowest precipitation in April: 4.2 mm less than Kawaguchiko and 3.0 mm more than Nara.

Rain of 1 mm or more falls on 9.2 days, and 10 mm or more on 3.6 days.

Rain of 30 mm or more in one day falls on 0.8 days.

The sun is out for 40% or more of the possible hours on 18.1 days, and 3.9 days have under 0.1 hours of sunshine.

By the JMA's cloud records, 2.8 days are clear and 10.5 are overcast.

On 15 April 2027 the sun rises at 5:27 and sets at 18:30 in Osaka, giving 13 hours 3 minutes of daylight (NAOJ).

Average temperature: 15.2°C (59°F)
Humidity: 58%
Days of 25°C or more: 2.5 days

Early, mid and late April

Osaka in April by ten-day period: averages for 1991–2020 (JMA)
Days	High	Low	Precipitation
1–10 April	18.1°C	9.0°C	36.2 mm
11–20 April	20.0°C	11.1°C	36.1 mm
21–30 April	21.7°C	12.7°C	29.6 mm

By the last ten days of April the average high in Osaka is 3.6°C higher than in the first ten.

By ten-day totals, 1–10 April is the wettest (36.2 mm) and 21–30 April the driest (29.6 mm).

What to wear in Osaka in April

Cool: highs around 19.9°C

Long sleeves with a light jacket or sweater.
A folding umbrella: rain falls on 9.2 days.

Pack

Folding umbrella

Our clothing rules

Flowers and autumn colour in Osaka in April

Cherry blossom

The JMA's sample cherry tree in Osaka opens around 27 March and is in full bloom around 4 April in an average year (1991–2020). In 2026 it opened on 26 March and was in full bloom on 3 April.

Dates are for one sample tree at or near the JMA observatory, not for every park in the city.

April records in Osaka

The extremes the JMA has measured in April at its Osaka station.

Hottest April day: 30.7°C (87°F) on 30 April 2005 (records since 1883)
Coldest April night: −2.6°C (27°F) on 3 April 1884 (records since 1883)
Wettest April day: 105.0 mm on 29 April 2021 (records since 1883)

Holidays and crowds in April

National holidays in April 2027:

Thu 29 April — Showa Day

In April 2025, hotels and inns across Osaka Prefecture were 81.0% full on average (4th busiest of 12 months). Foreign guests spent 2.50 million nights there that month (Japan Tourism Agency). That compares with 76.8% in March and 82.0% in May.

What's on in Osaka in April

Events in Osaka in April: dates from each organizer's official page
Event	When	Where and what
Cherry Blossom Passage at the Japan Mint (Sakura no Toorinuke)造幣局桜の通り抜け	About one week in early to mid April: 9 to 15 April in 2026	Grounds of the Japan Mint (Mint Bureau) in Osaka. A walk through the cherry trees in the Mint's grounds is open to visitors for seven days. In 2026 the hours were 10:00 to 19:15 on weekdays and 9:00 to 19:15 on Saturdays and Sundays, with everyone out by 19:45. In 2026, entry required an advance online application for a time slot; visitors showed the QR code from the confirmation email at the gate. There is no car park, and the grounds are entirely non-smoking. Official page

Osaka before and after April

Osaka: March, April and May (JMA, 1991–2020)
Month	High	Low	Precipitation	Wet days
March	14.2°C (−5.7°C)	6.0°C (−4.9°C)	103.1 mm (+1.2 mm)	9.1 days (−0.1 days)
April	19.9°C	10.9°C	101.9 mm	9.2 days
May	24.9°C (+5.0°C)	16.0°C (+5.1°C)	136.5 mm (+34.6 mm)	9.5 days (+0.3 days)

Other places in April

April: Osaka against five other places (JMA, 1991–2020)
Place	High	Against Osaka	Wet days	Against Osaka
Tokyo	19.4°C	−0.5°C	9.5 days	+0.3 days
Kyoto	20.1°C	+0.2°C	9.4 days	+0.2 days
Sapporo	11.7°C	−8.2°C	9.6 days	+0.4 days
OkinawaNaha	24.3°C	+4.4°C	10.3 days	+1.1 days
Fukuoka	19.9°C	same	9.7 days	+0.5 days

All 15 places in April

Frequently asked questions

What is the weather like in Osaka in April?

The average high is 19.9°C (68°F) and the average low 10.9°C (52°F). 101.9 mm of rain falls on about 9.2 days (JMA, 1991–2020).

What should I wear in Osaka in April?

Long sleeves with a light jacket or sweater. A folding umbrella: rain falls on 9.2 days.

Is Osaka busy in April?

In April 2025, hotels and inns across Osaka Prefecture were 81.0% full on average (4th busiest of 12 months). Foreign guests spent 2.50 million nights there that month (Japan Tourism Agency).

What are the record temperatures for April in Osaka?

The highest temperature the JMA has recorded in Osaka in April is 30.7°C (87°F), on 30 April 2005. The lowest is −2.6°C (27°F), on 3 April 1884.

What events are on in Osaka in April?

Cherry Blossom Passage at the Japan Mint (Sakura no Toorinuke): About one week in early to mid April: 9 to 15 April in 2026.

When do the cherry blossoms open in Osaka?