Which is the hottest month in Osaka?

The hottest time of year in Osaka is normally August. Expect maximum daytime temperatures to reach 33°C with very high heat and humidity.

Which month has the most rain in Osaka?

In terms of rainfall, June is usually the wettest month in Osaka with 215mm on average. There are normally 18 days in June with some rain.

When is it sunniest in Osaka?

The sunniest time of year in Osaka is normally August with bright sunshine on average for 48% of daylight hours; that's 7 hours of sunshine per day.

When is the sea warmest in Osaka?

The sea is usually at its warmest in Osaka in August when the water temperature reaches 27°C.

Best time to visit Osaka

Q: When is the best time to visit Osaka?

The best time to visit Osaka is May based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

Find the best time to visit Osaka and plan your perfect trip in 2025/2026. Get holiday inspiration, weather guides, travel advice and find great deals.

Osaka by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Japan

Topdeck sale: up to 15% off last minute trips

Sale

Save up to 15% on selected last minute bookings
Book holidays to Greece, Bali, Jordan, Japan & more
Discount amount varies by trip

Go to Topdeck deal >>

When is the best time to visit Osaka?

The best time to visit Osaka is May based on the following average weather conditions.

Maximum daytime temperature = 72 - 86°F [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

0.5
Jan
0.5
Feb
1
Mar
3
Apr
4
May
3.5
Jun
2.5
Jul
1.5
Aug
3
Sep
3.5
Oct
1.5
Nov
0.5
Dec

Change criteria

Max Day Temperature (°F)

48
Jan
48
Feb
55
Mar
68
Apr
75
May
81
Jun
88
Jul
91
Aug
84
Sep
73
Oct
63
Nov
54
Dec

Hours of Sunshine (daily)

5
Jan
5
Feb
5
Mar
6
Apr
6
May
5
Jun
6
Jul
7
Aug
5
Sep
5
Oct
5
Nov
5
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Japan (Osaka) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C) | Imperial (°F)