worldweather22°Cexceptionally cool
usually 26°C–31°C
cooler than 99% of similar days
night: near normal
rain: exceptionally wet
wind: exceptionally strong
Weather in Yokohama - 14-day forecast
Detailed weather forecast for Yokohama, Japan: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Yokohama
today🌧️
22°💧 35.7 mm
Sun🌧️
22°💧 44.7 mm
Mon🌧️
24°💧 173.7 mm
Tue🌧️
24°💧 14.5 mm
Wed🌧️
24°💧 52.3 mm
Thu🌧️
21°💧 51.8 mm
Fri🌧️
19°💧 5.8 mm
Sat🌧️
22°💧 0.2 mm
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Saturday 5 Sept in Yokohama, the forecast high is 22°C. Typical daytime temperatures at this time of year range from 26°C to 31°C, so it will be exceptionally cool. It is cooler than 99% of similar days.
22°Cexceptionally cool
usually 26°C–31°C
cooler than 98% of similar days
night: near normal
rain: exceptionally wet
wind: exceptionally strong
24°Cexceptionally cool
usually 26°C–30°C
cooler than 95% of similar days
night: exceptionally warm
rain: exceptionally wet
wind: exceptionally strong
24°Cexceptionally cool
usually 26°C–30°C
cooler than 90% of similar days
night: warmer than usual
rain: more rain than usual
wind: typical
24°Cexceptionally cool
usually 25°C–30°C
cooler than 91% of similar days
night: warmer than usual
rain: exceptionally wet
wind: exceptionally strong
21°Cexceptionally cool
usually 25°C–30°C
cooler than 97% of similar days
night: near normal
rain: exceptionally wet
wind: exceptionally strong
19°Cexceptionally cool
usually 25°C–30°C
cooler than 98% of similar days
night: near normal
rain: more rain than usual
wind: exceptionally strong
How warm was this week in previous years?
Each bar shows the average daily high during the same 7-day period in each year.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 28°C by day. The coolest year was 1981 (24°C) and the warmest was 2010 (32°C). The current forecast averages 22°C - lower than in 100% of historical years.
Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.
14-day forecast - Yokohama
Yokohama 30 & 45-day weather - long-range outlook
Next 16 days · forecast
23°
around 23° at night · days with rain: 11
Weeks 3-4 · avg for September
27°
around 21° at night · rain chance 54%
Weeks 5-7 · avg for October
22°
around 16° at night · rain chance 54%
The 30 & 45-day outlook for Yokohama: the next 16 days are a numerical forecast updated daily - on average 23° by day and 23° at night. Further out we rely on multi-year climate averages: around 27° in September, and about 22° in October. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for Yokohama
Saturday5 September 2026
🌧️22°heavy rain
Sunday6 September 2026
🌧️22°very heavy rain
Monday7 September 2026
🌧️24°very heavy rain
Tuesday8 September 2026
🌧️24°moderate rain
Wednesday9 September 2026
🌧️24°heavy rain
Thursday10 September 2026
🌧️21°heavy rain
Friday11 September 2026
🌧️19°light rain
Saturday12 September 2026
🌧️22°light rain
Sunday13 September 2026
☁️26°broken clouds
Monday14 September 2026
🌧️25°light rain
Tuesday15 September 2026
🌧️26°light rain
Wednesday16 September 2026
🌧️22°heavy rain
Thursday17 September 2026
🌧️25°moderate rain
Friday18 September 2026
🌤️25°a few clouds
Saturday19 September 2026
🌧️24°light rain
Sunday20 September 2026
🌧️25°light rain
UV index in Yokohama - is it safe to sunbathe?
Today the UV index in Yokohama is 1 (low). You can safely stay outside. Sunscreen only matters for very long exposure.
Sea temperature - Yokohama
Water today
27°C
Week avg
26°C
Waves today
0.3 m
How's the water?
warm
16-day sea temperature forecast:
Average sea temperature through the year:
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.
Air quality and smog in Yokohama
Air quality in Yokohama is currently good. Fine particulate PM2.5: 13.9 µg/m³, PM10: 15 µg/m³.
| City | PM2.5 (µg/m³) | PM10 (µg/m³) | Air quality |
|---|---|---|---|
| Yokohama | 13.9 | 15 | good |
Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-09-05, 10:00).
Yokohama weather through the year
Warmest, driest months on average: April, May, June, September.
Upcoming public holidays in Japan: Respect for the Aged Day — 21 September · Citizen's Holiday — 22 September · Autumnal Equinox Day — 23 September. Full calendar and travel notes
Nearby and related places
FAQ - Yokohama weather
What is the weather like in Yokohama today?
Today it is about 22° during the day and 20° at night, heavy rain.
How far ahead can I check the forecast for Yokohama?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.