Osaka Weather by Month
| Month | High / Low °C (°F) | Rainy days | Humidity |
|---|---|---|---|
| January | 9.7 (49.5) / 3.0 (37.4) | 6.4 | 61% |
| February | 10.5 (50.9) / 3.2 (37.8) | 7.3 | 60% |
| March | 14.2 (57.6) / 6.0 (42.8) | 10.3 | 59% |
| April | 19.9 (67.8) / 10.9 (51.6) | 10.0 | 58% |
| May | 24.9 (76.8) / 16.0 (60.8) | 10.4 | 61% |
| June | 28.0 (82.4) / 20.3 (68.5) | 12.3 | 68% |
| July | 31.8 (89.2) / 24.6 (76.3) | 11.3 | 70% |
| August | 33.7 (92.7) / 25.8 (78.4) | 7.8 | 66% |
| September | 29.5 (85.1) / 21.9 (71.4) | 10.6 | 67% |
| October | 23.7 (74.7) / 16.0 (60.8) | 9.2 | 65% |
| November | 17.8 (64.0) / 10.2 (50.4) | 7.0 | 64% |
| December | 12.3 (54.1) / 5.3 (41.5) | 7.1 | 62% |
A month-by-month planning table for Osaka on the Japan Meteorological Agency 1991-2020 normals (records back to 1883) — the 30-year averages behind the question every Kansai itinerary actually asks: what will this month feel like, and what do I pack? Pick a month for the typical high and low in both scales, rainy days, humidity and a packing line.
Osaka runs a couple of degrees warmer than Tokyo on both ends of the year — milder winters and stickier summers — with a fraction of the snow (1 cm a year versus Tokyo's 8) and less total rain (1,338 mm versus 1,598). One mirror-image detail: Osaka's wettest month is June's plum rain at 185 mm, while typhoon-season September is the peak further east — the two cities do not share a rain calendar.
How to use
- Pick your travel month from the dropdown.
- Read the typical high/low (C and F), rainy days and humidity, plus the packing line.
- Flying into Kansai for both cities? Compare rows with the Tokyo table linked below — same trip, different rain calendar.
Frequently asked questions
How does Osaka's weather compare with Tokyo's?
Osaka is 2-3 C warmer at both ends: January lows average 3.0 C against Tokyo's 1.2, August highs 33.7 against 31.3. It rains somewhat less (about 1,338 mm a year vs 1,598), snows almost never, and the wettest month flips — June's plum rain tops Osaka while October tops Tokyo. Same trip, one extra layer for a Tokyo winter evening.
When is the best time to visit Osaka?
Late October through November (23.7 falling to 17.8 C highs, 9 then 7 rainy days, humidity easing to 64%) and late March through April (14.2 to 19.9 C highs). Osaka's cherry blossoms typically open a few days earlier than Tokyo's.
Does it snow in Osaka?
For practical purposes, no — the 1991-2020 average is about 1 cm per year, essentially all in February. Winter sightseeing in Osaka is a cold-morning question, not a snow-gear question.
When is typhoon season in Osaka?
August to early October, with September the wettest of the stretch (153 mm). Note the contrast: Osaka's single wettest month is June (185 mm of plum rain), so a rainy-June trip here is wetter on average than a typhoon-month one.
How bad is Osaka's summer heat?
July and August average 31.8 and 33.7 C highs with lows that barely drop below 24-26 C — tropical nights are standard, and humidity holds 66-70%. Plan indoor breaks, carry water and salt, and treat August sightseeing as a morning-and-evening activity.
How do these normals compare with a forecast?
Normals are 30-year averages — an individual month can run 2-3 C off and rain days swing by several. Use the table to choose dates and pack, then check a forecast about a week before departure.