January in Osaka — workable with trade-offs
Trade-offs · 5.5/10January averages 3°C (37°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
Rainfall runs 46 mm, so plan one flexible day in three; you still get about 1 days with 6+ hours of sunshine and 9.9 hours of daylight.
It scores 5.5/10 here, 5th of 12 months, against 6.2/10 in the destination's best month.
Figure on peak pricing, with crowds are moderate.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.
February in Osaka — middling scores, decent value
Trade-offs · 5.5/10February averages 4°C (39°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
Rainfall runs 63 mm, so plan one flexible day in three; you still get about 5 days with 6+ hours of sunshine and 10.7 hours of daylight.
It scores 5.5/10 here, 6th of 12 months, against 6.2/10 in the destination's best month.
Figure on mid-season pricing, with crowds are moderate.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.
March in Osaka: expect compromises
Hardest · 4.9/10Expect 8°C (47°F) in March. A good month for city streets, viewpoints and long meals; leave swimming for another season.
149 mm of rain signals a properly wet month, with only about 14 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 4.9/10 on the same scale — 8th of 12 months, versus 6.2/10 for the best month here.
Expect mid-season pricing, and crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.
April in Osaka — middling scores, decent value
Trade-offs · 6/10April averages 14°C (57°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
At 179 mm this is a genuinely wet month: about 18 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 6/10 here, 2nd of 12 months, against 6.2/10 in the destination's best month.
Plan for peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.
May in Osaka: mixed conditions, plan around the weather
Trade-offs · 6/10Temperatures hover around 17°C (62°F) — the kind of month where neither heat nor cold forces the schedule.
This is the year's wettest stretch at 242 mm, but with about 24 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.
That is 6/10 on the same scale — 3rd of 12 months, versus 6.2/10 for the best month here.
Budget for mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.
June in Osaka: mixed conditions, plan around the weather
Trade-offs · 5.6/10June averages 22°C (71°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.
328 mm of rain puts this in monsoon territory — about 19 days with 6+ hours of sunshine across the whole month, and multi-day washouts are normal.
It scores 5.6/10 here, 4th of 12 months, against 6.2/10 in the destination's best month.
Plan for mid-season pricing, with crowds are moderate.
Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella.
July in Osaka — the hardest end of the year
Hardest · 4.6/10July averages 26°C (79°F) and humidity near 84%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
Monthly rainfall reaches 178 mm — wet for this destination — but about 24 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 4.6/10 here, 10th of 12 months, against 6.2/10 in the destination's best month.
Figure on mid-season pricing, with crowds are moderate.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Flexible dates? December scores 1.6 points higher here — enough to change the trip.
August in Osaka: expect compromises
Hardest · 3.8/10Days in August average 27°C (81°F) and humidity near 84% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
This is the year's wettest stretch at 322 mm, but with about 22 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.
That is 3.8/10 on the same scale — 12th of 12 months, versus 6.2/10 for the best month here.
Budget for low-season pricing, and crowds are light for this destination.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
If your dates are flexible, December is materially better in Osaka — 2.4 points higher on the same scale.
September in Osaka — off-season conditions
Hardest · 4.6/10At 25°C (76°F) this is comfortable city weather in September, with sightseeing easiest before lunch and after the afternoon peak.
Expect monsoon-level rainfall at 210 mm: only about 16 days with 6+ hours of sunshine across the month, and stretches of heavy rain are normal.
That is 4.6/10 on the same scale — 11th of 12 months, versus 6.2/10 for the best month here.
Expect low-season pricing, and crowds are light for this destination.
Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella.
If your dates are flexible, December is materially better in Osaka — 1.6 points higher on the same scale.
October in Osaka: mixed conditions, plan around the weather
Trade-offs · 5.5/10October averages 17°C (63°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
At 158 mm this is a genuinely wet month: about 10 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 5.5/10 here, 7th of 12 months, against 6.2/10 in the destination's best month.
Plan for mid-season pricing, with crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.
November in Osaka — off-season conditions
Hardest · 4.8/10November averages 12°C (53°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
At 136 mm this is a genuinely wet month: about 4 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 4.8/10 here, 9th of 12 months, against 6.2/10 in the destination's best month.
Figure on mid-season pricing, with crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.
December in Osaka tops the year's climate scores
Best window · 6.2/10Expect 5°C (41°F) in December. A good month for city streets, viewpoints and long meals; leave swimming for another season.
With around 24 mm of rain, any showers tend to pass through rather than settle in; about 1 days with 6+ hours of sunshine and 9.7 hours of daylight fill the rest.
On our climate-comfort scale this is the top-ranked month of the year for Osaka at 6.2/10 — the reference point every other month on this page is measured against.
Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in.
