Osaka in May
In May, Osaka averages 25°C (77°F) during the day and 15°C (59°F) at night, with around 9 days of rain (135 mm total).
High seasonConditions are comfortable for sightseeing without being sweltering. Occasional showers are likely but won't dominate.
May is a great month to visit Osaka: pleasant temperatures and relatively few wet days.
How May compares to the rest of the year in Osaka
May is in the middle of the year for warmth in Osaka (5th of 12) and one of the wettest months (3rd of 12). Daytime temperature runs 4°C above the annual average (21°C). May runs 5°C warmer than April (20°C) and warms a further 4°C into June (29°C).
May sunrise & sunset in Osaka
Times shown for Osaka local time (Asia/Tokyo), calculated for the 15th of May. They shift by a few minutes day to day across the month.
Photography light in Osaka — May
Golden-hour and blue-hour windows for the 15th of May, in Osaka's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Osaka in May
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on May's tier (High season) and Osaka's popularity.
May in Japan — events that affect travel
Known cultural, religious, or national events that surge prices, fill hotels, or close businesses during this month. Plan around them, or build your itinerary around the ones you'd like to see.
Japan's biggest domestic travel week — Showa Day through Children's Day. Trains, hotels, and attractions across Japan run at peak capacity; prices spike 30-100%, reservations vanish weeks ahead.
Plan: If you're visiting Japan in late April/early May, book trains and ryokan 2-3 months out. Or avoid the window entirely.
Crowds & pricing — May in Osaka
This is a busy month in Osaka — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: excellent tourism weather
Sun & mosquito risk — May in Osaka
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Osaka in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 10°C / 50°F | 2°C / 36°F | 45 mm | 5 | 0 |
| February | 11°C / 52°F | 3°C / 37°F | 65 mm | 5 | 0 |
| March | 14°C / 57°F | 6°C / 43°F | 105 mm | 8 | 0 |
| April | 20°C / 68°F | 10°C / 50°F | 125 mm | 9 | 0 |
| May | 25°C / 77°F | 15°C / 59°F | 135 mm | 9 | 0 |
| June | 29°C / 84°F | 20°C / 68°F | 180 mm | 11 | 0 |
| July | 33°C / 91°F | 24°C / 75°F | 155 mm | 9 | 0 |
| August | 33°C / 91°F | 25°C / 77°F | 110 mm | 7 | 0 |
| September | 29°C / 84°F | 21°C / 70°F | 160 mm | 9 | 0 |
| October | 23°C / 73°F | 15°C / 59°F | 110 mm | 8 | 0 |
| November | 18°C / 64°F | 10°C / 50°F | 70 mm | 6 | 0 |
| December | 12°C / 54°F | 4°C / 39°F | 45 mm | 5 | 0 |
Other cities with similar May weather
🌍 See the full ranked list of climate twins for Osaka in May →
Frequently asked questions
How hot is Osaka in May?
In May, Osaka averages a high of 25°C (77°F) and a low of 15°C (59°F) — generally warm.
Does it rain a lot in Osaka in May?
May sees occasional rain in Osaka, with about 9 rainy days on average.
Is May a good time to visit Osaka?
May is warm. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Osaka in May?
Pack light layers for warm days and cooler evenings. See the full May packing list for Osaka for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.