Yokohama Climate & Weather Averages
Japan · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
Best Time to Visit Yokohama
Based on temperature comfort, low rainfall, and sunshine hours, the best months to visit Yokohama are:
June, September, July
Scores based on ideal temperature (18-28°C), low precipitation, and high sunshine. June scores 59/100.
Yokohama has a Humid Subtropical climate with hot summers and cold winters. The warmest month is August with an average temperature of 27.7°C (81.9°F), while January is the coldest at 5.0°C (41.0°F). Annual precipitation averages 1685.0mm spread across approximately 178.0 rainy days per year, with June being the wettest month at 216.5mm and December the driest at 48.1mm. The city receives an average of 7.2-10.6 hours of sunshine per day, with the sunniest months being August and July. Humidity remains relatively consistent throughout the year, averaging around 73.7% annually, while average wind speeds reach 25.7 km/h. The overall annual mean temperature is 16.1°C (61.0°F), reflecting the humid subtropical conditions shaped by Yokohama's latitude (35.44°) and surrounding geography. For travelers, the best time to visit is June, September, July, when temperatures are comfortable and rainfall is lower.
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.
Seasonal Climate Overview
Spring (Mar-May)
Average temperature 14.3°C (57.7°F), rainfall 171.4mm, sunshine 8.4 hrs/day, humidity 73.2%. Mild transitional weather characterizes this period. Expect around 16.3 rainy days per month.
Summer (Jun-Aug)
Average temperature 25.3°C (77.5°F), rainfall 191.0mm, sunshine 9.2 hrs/day, humidity 81.0%. Warm season conditions prevail. Expect around 19.1 rainy days per month.
Autumn (Sep-Nov)
Average temperature 18.6°C (65.5°F), rainfall 141.6mm, sunshine 7.6 hrs/day, humidity 76.3%. Mild transitional weather characterizes this period. Expect around 15.1 rainy days per month.
Winter (Dec-Feb)
Average temperature 6.2°C (43.2°F), rainfall 57.6mm, sunshine 7.7 hrs/day, humidity 64.5%. Cold season conditions dominate. Expect around 8.7 rainy days per month.
Monthly Temperature Averages (°C / °F)
| Month | Avg High | Avg Low | Mean Temp |
|---|---|---|---|
| January | 9.4°C (48.9°F) | 1.0°C (33.8°F) | 5.0°C (41.0°F) |
| February | 10.9°C (51.6°F) | 2.0°C (35.6°F) | 6.3°C (43.3°F) |
| March | 14.8°C (58.6°F) | 5.9°C (42.6°F) | 10.3°C (50.5°F) |
| April | 18.3°C (64.9°F) | 10.3°C (50.5°F) | 14.2°C (57.6°F) |
| May | 22.1°C (71.8°F) | 14.9°C (58.8°F) | 18.4°C (65.1°F) |
| June | 25.6°C (78.1°F) | 19.1°C (66.4°F) | 22.1°C (71.8°F) |
| July | 29.6°C (85.3°F) | 23.5°C (74.3°F) | 26.2°C (79.2°F) |
| August | 31.2°C (88.2°F) | 25.0°C (77.0°F) | 27.7°C (81.9°F) |
| September | 27.7°C (81.9°F) | 21.8°C (71.2°F) | 24.5°C (76.1°F) |
| October | 21.6°C (70.9°F) | 14.7°C (58.5°F) | 18.0°C (64.4°F) |
| November | 17.5°C (63.5°F) | 9.5°C (49.1°F) | 13.3°C (55.9°F) |
| December | 11.8°C (53.2°F) | 3.3°C (37.9°F) | 7.3°C (45.1°F) |
Monthly Precipitation (mm)
| Month | Avg Rainfall | Bar |
|---|---|---|
| January | 55.6 mm | |
| February | 69.2 mm | |
| March | 154.8 mm | |
| April | 181.4 mm | |
| May | 177.9 mm | |
| June | 216.5 mm | |
| July | 215.8 mm | |
| August | 140.7 mm | |
| September | 177.3 mm | |
| October | 163.1 mm | |
| November | 84.4 mm | |
| December | 48.1 mm |
Monthly Rainy Days (avg days with rain > 0.1mm)
| Month | Avg Rainy Days | Bar |
|---|---|---|
| January | 9.6 | |
| February | 8.8 | |
| March | 16.2 | |
| April | 15.0 | |
| May | 17.6 | |
| June | 19.0 | |
| July | 19.8 | |
| August | 18.6 | |
| September | 19.2 | |
| October | 16.2 | |
| November | 10.0 | |
| December | 7.6 |
Monthly Humidity (%)
| Month | Avg Humidity | Bar |
|---|---|---|
| January | 64.5% | |
| February | 63.6% | |
| March | 69.8% | |
| April | 72.6% | |
| May | 77.2% | |
| June | 81.8% | |
| July | 81.9% | |
| August | 79.2% | |
| September | 80.9% | |
| October | 76.1% | |
| November | 72.0% | |
| December | 65.3% |
Monthly Wind Speed (avg max km/h)
| Month | Avg Max Wind | Bar |
|---|---|---|
| January | 25.5 km/h | |
| February | 28.8 km/h | |
| March | 29.5 km/h | |
| April | 28.9 km/h | |
| May | 27.2 km/h | |
| June | 24.3 km/h | |
| July | 24.3 km/h | |
| August | 24.9 km/h | |
| September | 24.0 km/h | |
| October | 23.7 km/h | |
| November | 23.9 km/h | |
| December | 22.8 km/h |
Monthly UV Index (avg max)
| Month | UV Index | Risk Level | Bar |
|---|---|---|---|
| January | — | — | |
| February | — | — | |
| March | — | — | |
| April | — | — | |
| May | — | — | |
| June | — | — | |
| July | — | — | |
| August | — | — | |
| September | — | — | |
| October | — | — | |
| November | — | — | |
| December | — | — |
Monthly Snowfall (cm)
| Month | Avg Snowfall | Bar |
|---|---|---|
| January | 4.0 cm | |
| February | 8.1 cm | |
| March | 4.6 cm | |
| April | 0.0 cm | |
| May | 0.0 cm | |
| June | 0.0 cm | |
| July | 0.0 cm | |
| August | 0.0 cm | |
| September | 0.0 cm | |
| October | 0.0 cm | |
| November | 0.0 cm | |
| December | 0.3 cm |
Monthly Sunshine Hours (daily average)
| Month | Avg Daily Sunshine | Bar |
|---|---|---|
| January | 7.4 hrs | |
| February | 7.9 hrs | |
| March | 8.1 hrs | |
| April | 8.6 hrs | |
| May | 8.5 hrs | |
| June | 8.2 hrs | |
| July | 8.8 hrs | |
| August | 10.6 hrs | |
| September | 7.9 hrs | |
| October | 7.2 hrs | |
| November | 7.6 hrs | |
| December | 7.8 hrs |
Frequently Asked Questions
What is the hottest month in Yokohama?
August is the hottest month with an average temperature of 27.7°C (81.9°F).
What is the coldest month in Yokohama?
January is the coldest month with an average temperature of 5.0°C (41.0°F).
What is the rainiest month in Yokohama?
June is the wettest month with an average of 216.5mm of precipitation. The city experiences about 178.0 rainy days per year.
When is the best time to visit Yokohama?
The best time to visit Yokohama is during June, September, July, when temperatures are comfortable and rainfall is lower.
Cities with Similar Climate (Humid Subtropical)
Other Cities in Japan
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.