Yokohama, Japan experiences average highs of 19°C (66°F) and lows of 13°C (55°F) throughout the year. Rainfall is moderate, averaging about 11 rainy days per month. Average highs have warmed by 0.6°C (1.1°F) across the available records.
Yokohama, Japan Weather & Climate 2026
Monthly climate averages for Yokohama, Japan. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Jun–Oct At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.2/10
Best: May, June, September, October
UV Index
5
Low
Temperature 19°C / 13°C
Feels Like 18°C / 12°C
Rainy Days 11
Rainfall 122 mm
Sunshine 8 h
Humidity 76%
Wind Speed 25 km/h
Dew Point 12°C
Snow Days 1 days
Frost Days 3 days
Hottest Month
29°C
August
Avg Low25°C
Rain12days
Coldest Month
3°C
January
Avg High9°C
Rain5days
Driest Month
5days
January
Avg High9°C
Avg Low3°C
Windiest Month
28 km/h
April (Gusts 44)
Sea Temperature
11°C – 28°C
Warmest water: August (
28°C
)
Worst Time to Visit
Consider avoiding January, February due to less favorable weather conditions.
Sun Position
Sunrise 04:27
Daylight 14.5h
Sunset 18:59
Live conditions—
Yokohama on the map · live conditions
Yokohama, Japan
- Continent
- Asia
- Country
- Japan
- City
- Yokohama
- Population
- 3.8M
- Coordinates
- 35.43°, 139.65°
Seasonal Breakdown
Spring
Mar–May
Avg High 17°C
Avg Low 11°C
Rain 12 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 27°C
Avg Low 22°C
Rain 12 days/mo
1/3 best months
Autumn
Sep–Nov
Avg High 21°C
Avg Low 16°C
Rain 13 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 10°C
Avg Low 4°C
Rain 6 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 9°C / 3°C . Feb: 10°C / 3°C . Mar: 13°C / 7°C . Apr: 17°C / 11°C . May: 21°C / 16°C . Jun: 24°C / 19°C . Jul: 27°C / 23°C . Aug: 29°C / 25°C . Sep: 26°C / 22°C . Oct: 21°C / 16°C . Nov: 16°C / 11°C . Dec: 11°C / 5°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 55 mm. Feb: 58 mm. Mar: 130 mm. Apr: 123 mm. May: 137 mm. Jun: 189 mm. Jul: 152 mm. Aug: 117 mm. Sep: 169 mm. Oct: 188 mm. Nov: 94 mm. Dec: 54 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 64%. Feb: 64%. Mar: 71%. Apr: 75%. May: 79%. Jun: 84%. Jul: 87%. Aug: 85%. Sep: 83%. Oct: 77%. Nov: 73%. Dec: 67%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 25 km/h . Feb: 27 km/h . Mar: 27 km/h . Apr: 28 km/h . May: 27 km/h . Jun: 24 km/h . Jul: 24 km/h . Aug: 25 km/h . Sep: 24 km/h . Oct: 24 km/h . Nov: 23 km/h . Dec: 24 km/h .
Sunshine
Sunshine
Sunshine: Jan: 8h. Feb: 8h. Mar: 8h. Apr: 9h. May: 9h. Jun: 8h. Jul: 9h. Aug: 10h. Sep: 8h. Oct: 7h. Nov: 7h. Dec: 7h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 12°C . Feb: 11°C . Mar: 13°C . Apr: 15°C . May: 18°C . Jun: 22°C . Jul: 26°C . Aug: 28°C . Sep: 27°C . Oct: 23°C . Nov: 19°C . Dec: 16°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 6. May: UV 6. Jun: UV 7. Jul: UV 8. Aug: UV 7. Sep: UV 6. Oct: UV 4. Nov: UV 3. Dec: UV 3.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 1 days. Feb: 2 days. Mar: 1 days. Apr: 0 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 0 days. Dec: 0 days.
Climate Trends
Average highs have warmed by 0.6°C (1.1°F) across the available records. Average rainfall is trending drier by about 45 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Aug 2025 · 30°C | Aug · 29°C |
| Coldest month | Feb 2025 · 2°C | Jan · 3°C |
| Wettest month | May 2025 · 187 mm | Jun · 189 mm |
| Windiest month | Mar 2025 · 30 km/h | Apr · 28 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Fair April
Good May best
Excellent June best
Excellent July
Good August
Fair September best
Excellent October best
Wet November
Good December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 9°C / 3°C | 5°C / -2°C | 5days (55 mm) Good | 7.6h Good | 64% Muggy | 3.3 Moderate | Poor | View Details |
| February | 10°C / 3°C | 6°C / -1°C | 8days (58 mm) Wet | 8.1h Good | 64% Muggy | 4 Moderate | Poor | View Details |
| March | 13°C / 7°C | 10°C / 3°C | 12days (130 mm) Wet | 7.9h Good | 71% Muggy | 4.7 Moderate | Fair | View Details |
| April | 17°C / 11°C | 15°C / 8°C | 11days (123 mm) Wet | 8.6h Good | 75% Muggy | 5.5 High | Good | View Details |
| May best | 21°C / 16°C | 21°C / 14°C | 12days (137 mm) Wet | 8.7h Good | 79% Humid | 5.8 High | Excellent | View Details |
| June best | 24°C / 19°C | 26°C / 20°C | 13days (189 mm) Wet | 8.3h Good | 84% Humid | 6.6 High | Excellent | View Details |
| July | 27°C / 23°C | 32°C / 26°C | 12days (152 mm) Wet | 8.9h Good | 87% Very Muggy | 7.6 Very High | Good | View Details |
| August | 29°C / 25°C | 33°C / 28°C | 12days (117 mm) Wet | 10h Excellent | 85% Humid | 7.4 Very High | Fair | View Details |
| September best | 26°C / 22°C | 29°C / 23°C | 14days (169 mm) Wet | 7.7h Good | 83% Humid | 5.8 High | Excellent | View Details |
| October best | 21°C / 16°C | 20°C / 14°C | 14days (188 mm) Wet | 6.5h Fair | 77% Humid | 4 Moderate | Wet | View Details |
| November | 16°C / 11°C | 14°C / 8°C | 10days (94 mm) Wet | 7h Good | 73% Muggy | 3.3 Moderate | Good | View Details |
| December | 11°C / 5°C | 8°C / 1°C | 6days (54 mm) Good | 7.3h Good | 67% Muggy | 3 Moderate | Fair | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Yokohama are May, June, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Yokohama, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Yokohama is August, with average daytime highs of 29°C (84°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Yokohama is January, with average overnight lows of 3°C (37°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Yokohama is June, averaging 189mm of precipitation across 13 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Yokohama runs through September, October, June, March, with the heaviest rainfall in September. Based on 10-year averages for Yokohama.
Yokohama receives approximately 97 sunshine hours per year. The sunniest month is August with around 10 hours. Based on climate data for Yokohama.
The least favorable months to visit Yokohama are January, February, primarily due to less favorable weather conditions. For the best conditions, consider May, June, September, October instead.
The annual average UV index in Yokohama is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Yokohama is 76%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes — sea temperatures in June, July, August, September, October average 25°C (77°F), which is warm and comfortable for swimming and water activities.
Yes, Yokohama receives snow. Months with snowfall average 1 snow days and 2 cm (1 in) of accumulation, with about 3 frost days during winter.
Average wind speeds in Yokohama are 25 km/h (16 mph). The windiest month is April with peak winds reaching 28 km/h (18 mph) (gusts up to 44 km/h / 27 mph).
Yokohama averages 5 clear-sky days per month with overall cloud cover around 58%. The clearest skies occur in January.
The annual average dew point in Yokohama is 12°C (54°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Yokohama has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Yokohama ranges from 12°C (54°F) to 18°C (64°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Yokohama. It earns a climate score of 8.3/10 with Excellent.
For June in Yokohama, pack Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses, Comfortable walking shoes. With average highs of 24°C (74°F) and 13 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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