Japan Yokohama Weather in May — Climate Guide
May in Yokohama is very good
Yokohama Weather in May — Quick Answer
As of 2026- Avg temp
- 23° / 15°
- Rainfall
- 138mm · 10 days
- Crowds
- Busy
As of 2026, Yokohama in May averages a high of 23°C and low of 15°C with 138mm of rain over about 10 days. Daytime 22-24°C late-spring comfort — short-sleeves + thin cardigan combo for AC interiors. UV index climbs to 7, so SPF 30 sunscreen, sunglasses, and a hat matter. Rainy days call for a compact umbrella. By late May the kit is essentially summer-light.
May is very good for Yokohama.
May splits cleanly into two halves: Golden Week peak (May 3-5, possibly the country's biggest single travel surge) and post-Golden Week normalcy (May 6 onward). Average 23°C / 15°C makes for ideal late-spring weather, slightly cooler at the harbor than inland.
May signatures: Yamashita Park's Rose Festival peaks mid-May with 1,900 roses across ~190 varieties, the Sankeien spring illumination continues, Minato Mirai's Cup Noodles Museum (instant-ramen design experience, $4 per personal cup) is a family staple, and Chinatown's spring dumpling menus stay strong. Cosmo World's Ferris wheel night view stays free for viewing from the waterfront.
Travel score
Golden Week + Rose Festival — May 6 onward is the value window
May Weather at a Glance
May averages 73°F / 23°C highs and 58°F / 15°C lows — late spring at its best. Yokohama runs slightly cooler than inland Tokyo thanks to sea breeze. Rainfall climbs to 138mm with the first hints of rainy season. UV index 7 — sun protection mandatory. Sunrise 4:40 AM, sunset 6:45 PM — daylight stretches to 14 hours.
May Travel Advice
Golden Week (May 3-5) is Japan's domestic travel peak — Chinatown and Minato Mirai are saturated. Prices reset May 6. Yamashita Park Rose Festival (mid-May) is the year's best for floral photography. UV-7 sun is sharper than it feels by the bay — combine sunglasses + hat + SPF 30.
Flying In from Overseas
Golden Week ends May 5 and global pricing relaxes immediately. Flights from Seoul (2.5h) $350-650, Singapore $500-850, Sydney $700-1,100, San Francisco $800-1,400, London $900-1,400. Pacific summer travel ramps but Yokohama still sees a relative dip post-Golden Week.
May Pricing Trends
Business hotels $60-100/night (May 6 onward), 4-star Minato Mirai $140-240/night. Golden Week peak +50-80%. Cup Noodles Museum $4 personal cup, Yamashita Park entry free. USD 1 ≈ JPY 148.
Yokohama May Weather Stats
Avg High
23°C
Avg Low
15°C
Rainy Days
10
138mm total
Sunshine
6h
Daily avg
Humidity
67%
comfortable
UV Index
7
High
Wind
10 km/h
Gusts 22
Sea Temp
18°C
cool
Crowds
Busy
At attractions
May Sunrise & Sunset
Air Quality
PM2.5
22 μg/m³
PM10
36 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
22°C
Nighttime
14°C
Humidity and wind affect how the actual temperature feels.
Wind
10 km/h
Max gust 22 km/h
Activities Recommended for May
May Travel Pros & Cons
Pros
- Yamashita Park Rose Festival — 1,900 roses at peak mid-May
- May 6-31 is post-Golden Week value window
- Comfortable late-spring weather
Cons
- Golden Week May 3-5 is the year's busiest with hotels +50-80%
- 138mm rainfall, 10 rainy days — quick showers common
- UV 7 demands daily SPF + hat
May Events & Festivals
- Constitution Day (May 3), Greenery Day (May 4), Children's Day (May 5) — Golden Week peak
- Yokohama Giant Komainu Fair (early May)
- Yamashita Park Rose Festival (mid-May, ~190 varieties + 1,900 rose bushes)
- Iseyama Kotai Jingu Spring Festival (mid-May)
Yokohama in May — Full Picture
May splits cleanly into two halves: Golden Week peak (May 3-5, possibly the country's biggest single travel surge) and post-Golden Week normalcy (May 6 onward). Average 23°C / 15°C makes for ideal late-spring weather, slightly cooler at the harbor than inland.
May signatures: Yamashita Park's Rose Festival peaks mid-May with 1,900 roses across ~190 varieties, the Sankeien spring illumination continues, Minato Mirai's Cup Noodles Museum (instant-ramen design experience, $4 per personal cup) is a family staple, and Chinatown's spring dumpling menus stay strong. Cosmo World's Ferris wheel night view stays free for viewing from the waterfront.
The smart-money move: prices reset on May 6. The May 6-31 window combines warm spring weather + Rose Festival + normal hotel pricing + flights at $450-800. Rainfall climbs to 138mm with quick afternoon showers (rainy season's first hint), so pack quick-dry layers. UV index 7 means daily SPF and a hat are mandatory — bayside sun is stronger than it looks.
What to Wear & What to Pack
Daytime 22-24°C late-spring comfort — short-sleeves + thin cardigan combo for AC interiors. UV index climbs to 7, so SPF 30 sunscreen, sunglasses, and a hat matter. Rainy days call for a compact umbrella. By late May the kit is essentially summer-light.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current18.7°C
10°C
10.3/mo
Summer (Jun·Jul·Aug)
28°C
22°C
10.3/mo
Autumn (Sep·Oct·Nov)
22°C
15.7°C
9.3/mo
Winter (Dec·Jan·Feb)
11°C
3.3°C
5.3/mo
Yokohama Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 10° | 2° | 5d·55mm | 6h | 53% | 2 | Quiet | Low season | |
| 11° | 3° | 6d·60mm | 6h | 55% | 3 | Quiet | Low season | |
| March (Best) | 14° | 5° | 10d·115mm | 6h | 58% | 5 | Very busy | Peak |
| April (Best) | 19° | 10° | 11d·125mm | 6h | 62% | 6 | Very busy | Peak |
| May (Best) | 23° | 15° | 10d·138mm | 6h | 67% | 7 | Busy | Shoulder |
| 25° | 19° | 12d·175mm | 4h | 75% | 8 | Quiet | Low season | |
| 29° | 23° | 11d·155mm | 5h | 78% | 10 | Busy | Peak | |
| 30° | 24° | 8d·140mm | 6h | 75% | 10 | Very busy | Peak | |
| 27° | 21° | 11d·230mm | 4h | 76% | 7 | Moderate | Shoulder | |
| 22° | 16° | 10d·235mm | 5h | 72% | 5 | Busy | Peak | |
| November (Best) | 17° | 10° | 7d·100mm | 5h | 65% | 3 | Very busy | Peak |
| December (Best) | 12° | 5° | 5d·65mm | 6h | 56% | 2 | Very busy | Peak |
View Other Months
Yokohama May Hotel Picks
Frequently Asked Questions
Is May a good time to visit Yokohama?
Yokohama in May is very good. Tourist crowds are busy and flight/hotel prices are shoulder.
What's the average temperature in Yokohama in May?
Yokohama May averages a high of 23°C and a low of 15°C.
Does it rain much in Yokohama in May?
Yokohama May averages 138mm of rainfall over about 10 rainy days.
What should I wear in Yokohama in May?
Daytime 22-24°C late-spring comfort — short-sleeves + thin cardigan combo for AC interiors. UV index climbs to 7, so SPF 30 sunscreen, sunglasses, and a hat matter. Rainy days call for a compact umbrella. By late May the kit is essentially summer-light.
What time are sunrise and sunset in Yokohama in May?
Yokohama May sunrise is 04:40 and sunset is 18:45, with 14h 05min of daylight.
What's the air quality like in Yokohama in May?
Yokohama May air quality (AQI) averages 45, rated Good. PM2.5 averages 22μg/m³.
What activities are recommended in Yokohama in May?
In May, Yokohama is great for Yamashita Park Rose Festival, Cup Noodles Museum experience, Cosmo World night view.
Is May peak season in Yokohama?
Yokohama May crowds are busy and prices are shoulder. Advance reservations are strongly recommended.
Best Months to Visit Yokohama
View Other Months
Planning a May trip to Yokohama?
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Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.