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
September
Weather in September
Temperature
As September arrives, Ichihara's weather displays a minor decrease in high-temperatures, transitioning from August's 29.8°C (85.6°F) to a still moderately hot 26.4°C (79.5°F). Ichihara's September nights exhibit a subtle drop in temperature, averaging at an agreeable 21.8°C (71.2°F), closely aligned with the daytime highs.Humidity
In Ichihara, the average relative humidity in September is 77%.Rainfall
In Ichihara, in September, during 16.3 rainfall days, 117mm (4.61") of precipitation is typically accumulated. Throughout the year, there are 162.9 rainfall days, and 921mm (36.26") of precipitation is accumulated.Snowfall
In Ichihara, snow does not fall in March through December.Sea temperature
In Ichihara, the average seawater temperature in September is 24.9°C (76.8°F).Note: Individual cold sensitivities, influenced by sunshine, wind, and the ambient temperature, play a role in finding a swim in 24.9°C (76.8°F) water pleasant. (Olympic swimming events mandate water temperatures from 25°C (77°F) to 28°C (82.4°F).)
Daylight
In Ichihara, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 05:11 and sunset at 18:07. On the last day of September, sunrise is at 05:33 and sunset at 17:25 JST.
Sunshine
The average sunshine in September in Ichihara is 7.6h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The UV index of 6 in September translates into these instructions:
Resist overexposure. Safeguarding from solar damage is indispensable. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Ichihara?
What is the average humidity in September in Ichihara?
How much does it rain in Ichihara in September?
When it does not snow in Ichihara?
What is the water temperature in September in Ichihara?
How many hours of daylight does Ichihara have in September?
What time are sunrise and sunset in September in Ichihara?
How long on average sun shines in September in Ichihara?
How high is the UV index in September in Ichihara?
Average temperature in September
Ichihara, Japan
- Average high temperature in September: 26.4°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: 21.8°C
The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (3.8°C).
Average pressure in September
Ichihara, Japan
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in September
Ichihara, Japan
- Average wind speed in September: 14km/h
The windiest month (with the highest average wind speed) is March (17.4km/h).
The calmest month (with the lowest average wind speed) is June (13.4km/h).
Average humidity in September
Ichihara, Japan
- Average humidity in September: 77%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is January (62%).
Average rainfall in September
Ichihara, Japan
- Average rainfall in September: 117mm
The wettest month (with the highest rainfall) is October (124mm).
The driest month (with the least rainfall) is January (41mm).
Average rainfall days in September
Ichihara, Japan
- Average rainfall days in September: 16.3 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in September
Ichihara, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (26mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Ichihara, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature in September
Ichihara, Japan
- Average sea temperature in September: 24.9°C
The best month for swimming (with the highest average sea temperature) is August (25.3°C).
The coldest month (with the lowest average sea temperature) is February (14.4°C).
Average daylight in September /
Average sunshine in September
Ichihara, 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: 7h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in September
Ichihara, Japan
- Average sunshine days in September: 10.9 days
The month with the most sunshine days is January (22.8 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in September
Ichihara, Japan
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in September
Ichihara, Japan
- Average cloud cover in September: 41
The month with the most cloud cover is June (Cloud cover 47).
The month with the least cloud cover is January (Cloud cover 32).
Average visibility in September
Ichihara, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
