Yokohama climate
Yokohama (Japan) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 15 °C60 °F, and about 1,636 mm64 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Yokohama climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 847 | −130 | 438 | 662.6 |
| Feb | 1050 | 032 | 541 | 672.6 |
| Mar | 1457 | 337 | 847 | 1154.5 |
| Apr | 1966 | 846 | 1356 | 1295.1 |
| May | 2374 | 1356 | 1865 | 1425.6 |
| Jun | 2679 | 1864 | 2272 | 1817.1 |
| Jul | 3086 | 2272 | 2679 | 1807.1 |
| Aug | 3188 | 2374 | 2781 | 1556.1 |
| Sep | 2781 | 1967 | 2374 | 2158.5 |
| Oct | 2271 | 1356 | 1864 | 2228.7 |
| Nov | 1762 | 745 | 1253 | 973.8 |
| Dec | 1152 | 134 | 643 | 692.7 |
| Year | 3188 | −130 | 1560 | 1,63664 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 77% | 48% | 2.8 | 10:01 |
| Feb | 77% | 57% | 3.3 | 10:51 |
| Mar | 77% | 61% | 4.1 | 11:52 |
| Apr | 78% | 64% | 4.8 | 13:03 |
| May | 79% | 70% | 5.1 | 14:01 |
| Jun | 83% | 81% | 4.6 | 14:32 |
| Jul | 84% | 76% | 4.8 | 14:19 |
| Aug | 82% | 65% | 5.0 | 13:29 |
| Sep | 84% | 71% | 3.9 | 12:21 |
| Oct | 84% | 68% | 3.1 | 11:13 |
| Nov | 82% | 57% | 2.6 | 10:15 |
| Dec | 80% | 47% | 2.5 | 9:46 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Yokohama is like
The warmest month is August, with an average high of 31 °C88 °F and a low of 23 °C74 °F. The coldest is January, when highs average 8 °C47 °F and lows −1 °C30 °F. Seasons are strongly marked: the warmest month is on average 23.6 °C42.5 °F warmer than the coldest.
It is wet, with about 1,636 mm64 in of precipitation per year. The wettest three-month stretch is August–October, which brings 36% of the annual total. The wettest month is October (222 mm8.7 in), the driest is January (66 mm2.6 in).
Relative humidity ranges from 77% in March to 84% in July. The clearest skies (lowest average cloud amount, 47%) are typical of December. Average wind speed near the ground ranges from 8 km/h (5 mph) in November to 11 km/h (7 mph) in April. Daylight lasts from about 9.8 hours in December to 14.5 hours in June.
Best time to visit Yokohama
Based on these averages, the most comfortable months for sightseeing and outdoor activities are April and May and November: average highs of 17 °C62 °F to 23 °C74 °F with 97 mm3.8 in to 142 mm5.6 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 8 °C47 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
Yokohama weather by month
- January8 °C47 °F / −1 °C30 °F
- February10 °C50 °F / 0 °C32 °F
- March14 °C57 °F / 3 °C37 °F
- April19 °C66 °F / 8 °C46 °F
- May23 °C74 °F / 13 °C56 °F
- June26 °C79 °F / 18 °C64 °F
- July30 °C86 °F / 22 °C72 °F
- August31 °C88 °F / 23 °C74 °F
- September27 °C81 °F / 19 °C67 °F
- October22 °C71 °F / 13 °C56 °F
- November17 °C62 °F / 7 °C45 °F
- December11 °C52 °F / 1 °C34 °F
What to pack for Yokohama
- Winter (December–February) — highs 847 to 11 °C52 °F, lows −130 to 1 °C34 °F, about 67 mm2.6 in of precipitation a month. Pack a warm coat, layers and closed shoes.
- Spring (March–May) — highs 1457 to 23 °C74 °F, lows 337 to 13 °C56 °F, about 128 mm5.1 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
- Summer (June–August) — highs 2679 to 31 °C88 °F, lows 1864 to 23 °C74 °F, about 172 mm6.8 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Autumn (September–November) — highs 1762 to 27 °C81 °F, lows 745 to 19 °C67 °F, about 178 mm7.0 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
How Yokohama compares
Compared with Tokyo, about 29 km to the north, Yokohama has practically the same average temperature and receives a similar amount of precipitation. The difference is largest in December (1.1 °C1.9 °F cooler).
Of the 111 places in Japan covered by World Climates, Yokohama is the 53rd warmest by annual mean temperature and the 61st wettest by annual precipitation. See all of them on the Japan climate page.
Places in other countries with the most similar temperature and rainfall pattern: Virginia Beach (United States, Cfa), Norfolk (United States, Cfa) and East Hampton (United States, Cfa).
The same NASA POWER grid cell also contains Aihara (pop. 725,493), Sagamihara (pop. 720,780), Hachiōji (pop. 579,355), Fujisawa (pop. 439,728), Machida (pop. 431,079), Yokosuka (pop. 409,478), Nakano (pop. 344,880), Fuchu (pop. 262,790), Hiratsuka (pop. 258,422), Chigasaki (pop. 242,798), Chōfu (pop. 242,614) and Yamato (pop. 242,065) and 17 more places. Their long-term averages in this dataset are essentially the same as for Yokohama, so they do not have separate pages.
Nearby places
- Tokyo 29 km · 16 °C60 °F · 1,694 mm67 in
- Kawaguchi 42 km · 15 °C59 °F · 1,519 mm60 in
- Chiba 46 km · 16 °C60 °F · 1,694 mm67 in
- Saitama 53 km · 15 °C59 °F · 1,449 mm57 in
- Abiko 58 km · 15 °C59 °F · 1,519 mm60 in
- Narita 72 km · 16 °C60 °F · 1,543 mm61 in
- Kumagaya 81 km · 15 °C59 °F · 1,449 mm57 in
- Koga 84 km · 15 °C59 °F · 1,519 mm60 in
Frequently asked questions
What is the warmest month in Yokohama?
August is the warmest month in Yokohama, with an average high of 31 °C (88 °F) and an average low of 23 °C (74 °F).
What is the coldest month in Yokohama?
January is the coldest month, with an average high of 8 °C (47 °F) and an average low of -1 °C (30 °F).
When does it rain the most in Yokohama?
October is the wettest month with about 222 mm (8.7 in) of precipitation; January is the driest with about 66 mm (2.6 in).
What is the best time to visit Yokohama?
Judging by long-term averages, the most comfortable months are April and May and November.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 233 m, while Yokohama lies at about 21 m. Temperatures on this page were therefore adjusted by +1.4 °C2.5 °F using the standard lapse rate of 6.5 °C per 1,000 m.