Yokohama Weather in August
Japan · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
August in Yokohama sees average temperatures ranging from a low of 25.0°C (77.0°F) to a high of 31.2°C (88.2°F), with a mean of 27.7°C (81.9°F). Compared to the annual average of 16.1°C (61.0°F), this month is 11.6°C warmer than the yearly norm. This is the hottest month of the year, reaching 31.2°C (88.2°F) on average. Precipitation averages 140.7mm, making it approximately 0.0mm wetter than the monthly average of 140.0mm. The city receives an average of 10.6 hours of sunshine per day during August, with relative humidity averaging 79.2%. Wind speeds reach an average maximum of 24.9 km/h. For travelers, this month offers a hottest month of the year experience in Yokohama, with wetter-than-average conditions compared to the rest of the year.
Yokohama's coastal position gives it a slightly cooler climate than inland Tokyo. I've tracked the temperature differences and found the bay breeze provides natural air conditioning on summer afternoons. The city's waterfront parks and Minato Mirai district are best enjoyed in September and October, when the humidity drops and the skies clear. The data supports what locals know: Yokohama's climate is a few degrees more comfortable than Tokyo's year-round.
August vs Adjacent Months
| Metric | July | August | September |
|---|---|---|---|
| Mean Temp | 26.2°C (79.2°F) | 27.7°C (81.9°F) | 24.5°C (76.1°F) |
| Rainfall | 215.8mm | 140.7mm | 177.3mm |
| Sunshine | 8.8 hrs | 10.6 hrs | 7.9 hrs |
| Humidity | 81.9% | 79.2% | 80.9% |
| Wind | 24.3 km/h | 24.9 km/h | 24.0 km/h |
| Rainy Days | 19.8 | 18.6 | 19.2 |
Seasonal Context
August falls in Summer in the Northern Hemisphere. Summer brings the warmest conditions of the year with the longest daylight hours. For travelers visiting Yokohama in August, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Yokohama in August?
The average temperature in Yokohama during August ranges from 25.0°C (77.0°F) to 31.2°C (88.2°F), with a mean of 27.7°C (81.9°F).
How much does it rain in Yokohama in August?
Yokohama receives an average of 140.7mm of precipitation in August, spread across approximately 18.6 rainy days.
What should I pack for Yokohama in August?
Based on August weather data, pack lightweight, breathable clothing, sunscreen, and a hat. Rain gear is essential — this month averages 140.7mm of precipitation.
Is August a good time to visit Yokohama?
August is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Yokohama
Cities with Similar August Climate (Humid Subtropical)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 35.44°, 139.64°. Timezone: Asia/Tokyo. Last updated: 2026-07-30.