Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
A minor decrease in the average high-temperature is observed during September, shifting from a moderately hot 29.8°C (85.6°F) in August to a still warm 26.5°C (79.7°F). Yokohama indicates a consistently low-temperature of 21.9°C (71.4°F) during the nights of September.Humidity
In Yokohama, the average relative humidity in September is 75%.Rainfall
In Yokohama, in September, it is raining for 15 days, with typically 104mm (4.09") of accumulated precipitation. In Yokohama, during the entire year, the rain falls for 160.5 days and collects up to 884mm (34.8") of precipitation.Snowfall
April through December are months without snowfall.Sea temperature
In Yokohama, the average seawater temperature in September is 25.9°C (78.6°F).Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.
Daylight
The average length of the day in September is 12h and 25min.On the first day of September in Yokohama, sunrise is at 05:13 and sunset at 18:08. On the last day of the month, sunrise is at 05:35 and sunset at 17:27 JST.
Sunshine
The average sunshine in September in Yokohama is 8h.UV index
In Yokohama, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Prioritize safety - Suggestions to prevent sun damage are offered. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. To cut down UV radiation exposure by about half, sport a wide-brim hat. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Yokohama in September?
What is the average humidity in September in Yokohama?
How much does it rain in Yokohama in September?
When it does not snow in Yokohama?
What is the water temperature in September in Yokohama?
How many hours of daylight does Yokohama have in September?
When are sunrise and sunset in September in Yokohama?
How many hours of sunshine does Yokohama have in September?
What is the UV index reading in September in Yokohama?
Average temperature in September
Yokohama, Japan
- Average high temperature in September: 26.5°C
The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in September: 21.9°C
The month with the highest average low temperature is August (25.3°C).
The coldest month (with the lowest average low temperature) is January (4°C).
Average pressure in September
Yokohama, Japan
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is November (1018mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in September
Yokohama, Japan
- Average wind speed in September: 14.7km/h
The windiest month (with the highest average wind speed) is April (17.9km/h).
The calmest month (with the lowest average wind speed) is June (14.2km/h).
Average humidity in September
Yokohama, Japan
- Average humidity in September: 75%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is January (60%).
Average rainfall in September
Yokohama, Japan
- Average rainfall in September: 104mm
The wettest month (with the highest rainfall) is October (126mm).
The driest month (with the least rainfall) is December (40mm).
Average rainfall days in September
Yokohama, Japan
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is June (16.1 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in September
Yokohama, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (22mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Yokohama, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Yokohama, Japan
- Average sea temperature in September: 25.9°C
The best month for swimming (with the highest average sea temperature) is August (26.2°C).
The coldest months (with the lowest average sea temperature) are February and March (16.2°C).
Average daylight in September /
Average sunshine in September
Yokohama, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in September
Yokohama, Japan
- Average sunshine days in September: 12.1 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is October (11.7 days).
Average UV index in September
Yokohama, Japan
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March and December (UV index 3).
Average cloud cover in September
Yokohama, Japan
- Average cloud cover in September: 38
The month with the most cloud cover is October (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 30).
Average visibility in September
Yokohama, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Yokohama, Japan
Weather forecast for your location
2. Allow the app to use your location