When you picture fall in Yokohama, you’ll notice a clear shift from the muggy summer heat to cooler, more comfortable days. Average high temperatures drop from the mid-80s °F in early September to the upper 50s °F by late November, so autumn feels like one of the best times to be outside.
The air dries out, skies clear up, and the city takes on that crisp, seasonal vibe.
Rainfall eases up as the months go by. September can still bring some lingering showers, but by late autumn, the odds of a rainy day fall off a cliff.
Humidity drops too, starting off muggy but quickly giving way to fresh, dry air. This steady change creates a perfect backdrop for exploring Yokohama’s parks, waterfront, and neighborhoods.
Winds shift from the south to the north as the season moves along, which adds a refreshing edge to those cooler days.
Shorter daylight hours and vivid fall colors really shape the city’s daily life and travel experiences. Maybe you’re planning a stroll through Sankeien Garden or a harbor cruise—knowing what to expect from the weather helps you make the most of the season.
Overview of Fall Weather in Yokohama
In Yokohama, fall brings a steady drop in temperature, less humidity, and clearer skies than summer. Rain still happens, especially in early autumn, but things get more stable and comfortable as the season moves forward.
Typical Autumn Climate
Expect mild to cool temperatures during fall in Yokohama. Early on, daily highs often hit the low 80s °F (around 28°C), but by late November, you’ll see them closer to the upper 50s °F (about 14°C).
Nights cool down fast, so you’ll want lighter clothes in September and warmer layers by November.
Rainfall peaks in October, with averages around 120–130 mm spread over about 15–16 days. October tends to be the wettest month.
September can still bring some leftover typhoon activity, though storms aren’t as common as in summer.
Humidity drops after September, and you’ll notice fewer cloudy days. By late fall, the skies are clearer and the air feels crisp and dry.
You also get more sunshine hours than in summer, so there’s more time for outdoor fun.
Key Seasonal Changes
The biggest change is how steadily it cools off. Temperatures fall by over 20°F (about 11°C) from early to late autumn, shifting the city from warm and humid to cool and brisk.
It’s honestly one of the most comfortable times of year for walking and sightseeing.
Rainfall patterns change too. September brings storm risk and high humidity, October is rain-heavy but cooler, and November is drier and clearer.
These changes affect what you wear and how you plan your days.
Wind speeds stay moderate, and sea temperatures cool slowly, so coastal areas remain just a bit milder. By late autumn, daylight hours are shorter, but the weather is stable, making November a sweet spot for travel in Yokohama.
Average Temperatures During Fall
During fall in Yokohama, temperatures shift from warm late-summer conditions to cooler early-winter levels.
You’ll notice steady changes in both daytime highs and nighttime lows, so there’s no mistaking that transition from summer heat to winter chill.
Monthly Temperature Ranges
In September, average high temperatures reach about 26–27°C (79–81°F), with lows around 20°C (68°F).
You’ll still feel some leftover summer warmth, but humidity and rain stick around.
By October, highs drop to about 21°C (70°F), and lows fall to 14–15°C (57–59°F). This is when rainfall peaks, so it can feel damp even with cooler air.
In November, things cool down more. Highs average 16–17°C (61–63°F), and lows dip to 10°C (50°F).
The month is drier and more comfortable, signaling winter’s approach.
| Month | Avg High °C (°F) | Avg Low °C (°F) |
|---|---|---|
| September | 26.5 (79.7) | 20 (68) |
| October | 21.2 (70.2) | 14.1 (57.3) |
| November | 16.7 (62.1) | 10 (50) |
Daytime and Nighttime Variations
September’s daytime temperatures can still feel hot, especially in the early afternoons when highs go above 26°C (79°F).
Nights stay pretty mild, rarely dropping below 20°C (68°F), so you probably won’t need much more than a light layer.
By October, the gap between day and night grows. Afternoon highs reach the low 20s °C (upper 60s to low 70s °F), but mornings and evenings cool off, often landing in the mid-teens °C (upper 50s °F).
November brings the sharpest contrast. Days are pleasant at about 16–17°C (61–63°F), but nights cool quickly to near 10°C (50°F).
You’ll likely want a jacket after sunset, especially when breezes from the bay make it feel colder.
These steady shifts bring a comfortable but varied climate, so your clothing needs change from light layers in early fall to warmer outerwear by late November.
Precipitation Patterns in Autumn
Rain plays a big role in Yokohama’s fall weather. You’ll notice wetter conditions in early autumn, then a steady drop in rainfall as winter gets closer.
Both the amount of rain and the number of rainy days change a lot from September through November.
Monthly Rainfall Amounts
Rainfall in Yokohama during autumn drops steadily. September often brings heavy precipitation, averaging around 210–220 mm, thanks to lingering typhoons and late-summer humidity.
By October, rainfall stays high, with about 200–216 mm on average. October is still one of the wettest months, even with cooler temperatures.
November changes things up. Precipitation falls to about 90–100 mm, almost half of October’s totals.
| Month | Average Rainfall (mm) |
|---|---|
| September | ~210–220 mm |
| October | ~200–216 mm |
| November | ~90–100 mm |
So, you’ll want to expect wetter days early in the season and much drier weather as November rolls in.
Frequency of Rainy Days
The number of rainy days follows the same pattern. In September, you’ll see 14–16 days with measurable rain.
These showers often come from typhoon activity and humid air masses.
October is just as wet, with about 16–17 rainy days. Even though it’s cooler, the month still brings frequent showers, making it the peak for wet days in autumn.
By November, things dry out. Rain usually falls on 8–10 days during the month, so you get more clear skies and fewer interruptions to your plans.
This shift from frequent rain in September and October to fewer wet days in November really marks autumn in Yokohama.
Humidity Levels in Fall
During fall in Yokohama, the air gradually loses the heavy humidity of summer. You’ll still notice some dampness in September, but by November the air feels much drier and more comfortable.
Average Relative Humidity
Average relative humidity in Yokohama during fall ranges from the mid-70s in September to the low 60s by November.
This change makes being outside a lot easier, especially compared to the sticky summer.
In September, expect around 73–75% humidity, which can still feel heavy when it’s warm. By October, humidity drops to 68–70%, so days start to feel cooler and more pleasant.
November brings the biggest difference, with values near 60–62%, which most people find pretty moderate.
As humidity drops, you’ll feel less sticky and uncomfortable. It also means less chance of mold in homes and hotels, which is honestly a relief after the damp summer.
For travel, October and November are comfortable months for walking tours and outdoor sightseeing.
Humidity Fluctuations by Month
Humidity in Yokohama shifts a lot during fall. September often feels muggy, especially during and after rain.
Rainfall is still common, which keeps the air moist.
In October, humidity starts to let up, but rainfall peaks, averaging about 126 mm. Even with more rain, the cooler air makes things less oppressive.
By November, rainfall drops and humidity reaches its lowest point of the season. The air feels crisp and dry, making it easier to enjoy parks, waterfronts, and open-air attractions.
This drop in humidity signals the move toward winter, when levels stay moderate.
Each month brings a clear step down in humidity, and that’s why fall is such a comfortable time to explore Yokohama.
Wind and Weather Phenomena
During fall in Yokohama, you’ll notice the wind changing direction and strength as the season shifts. The region also faces some risk from tropical systems that can bring heavy rain and strong gusts.
Prevailing Winds
In autumn, winds in Yokohama shift from the humid southerly breezes of summer to cooler northern and northwesterly flows.
Continental air masses from northern Asia start to influence the area more as fall goes on.
You usually get lighter winds in September, but by November, stronger breezes show up more often.
Average wind speeds range between 10–20 km/h (6–12 mph), though coastal spots can feel slightly stronger gusts.
The sea breeze along Tokyo Bay plays a part too. During the day, winds blow onshore, bringing cooler air inland.
At night, land breezes move outward toward the water.
For visitors, this means crisp, refreshing air by mid to late autumn, with less humidity than summer.
These winds help clear the skies and make outdoor activities more pleasant.
Typhoon and Storm Occurrences
Fall is part of Japan’s typhoon season, which usually peaks from August through early October.
In Yokohama, September is when storms are most likely to mess with travel and daily life.
When a typhoon passes nearby, you might see wind gusts over 60 km/h (37 mph) and heavy rain.
Even if the storm doesn’t make landfall, outer rain bands can bring strong winds and short bursts of intense showers.
By late October and November, typhoon risk drops a lot. Instead, you might get low-pressure systems sweeping across Honshu, bringing gusty air and cooler weather.
These systems aren’t as intense as typhoons but can still make things brisk and unsettled.
If you plan to visit in early fall, it’s wise to keep an eye on storm forecasts and expect possible travel delays.
Later in the season, winds are steadier and less disruptive.
Best Times to Visit Yokohama in Autumn
You can expect mild temperatures, lower humidity, and colorful foliage during autumn in Yokohama.
The season also brings cultural festivals and outdoor activities that make the city especially appealing for visitors.
Optimal Weather Windows
Autumn in Yokohama runs from September through November.
Early September can still feel humid, with highs near 26–27°C (79–81°F), but things get better as the month goes on.
By November, daytime highs average 16–17°C (61–63°F), and evenings cool down to around 10°C (50°F).
Rain falls most often in October, with about 126 mm of precipitation and nearly half the month seeing rain.
If you want drier days, late October into November is your best bet.
Humidity keeps dropping, so it’s easier to spend time outdoors.
The most comfortable stretch usually lands in late October through mid-November, when the air feels crisp but not cold.
This period also matches the peak of fall foliage in parks and gardens, so you get both pleasant weather and great views.
Seasonal Events and Activities
Autumn brings a bunch of cultural and seasonal highlights to Yokohama. The Yokohama Oktoberfest at the Red Brick Warehouse shows up in early October, mixing food, beer, and live music.
Later in the season, you can catch the fall colors at Sankeien Garden, Yamashita Park, and Negishi Forest Park. Maple and ginkgo trees turn wild shades of red and yellow, and honestly, it’s a sight you don’t want to miss.
You’ll spot local food festivals too, especially ones celebrating autumn treats like sweet potatoes and chestnuts. Evening illuminations kick off in November, changing the vibe in Minato Mirai and along the waterfront.
These events just feel right with the crisp, dry weather that rolls in during late autumn.