September weather forecastFuttsu, Japan

September

Weather in September

The first month of the autumn, September, is also a moderately hot month in Futtsu, Japan, with an average temperature ranging between min 22.2°C (72°F) and max 25.7°C (78.3°F).

Temperature

September brings a slight decrease in the average high-temperature, shifting from 28.8°C (83.8°F) in August to a still warm 25.7°C (78.3°F). Nighttime temperature reflects an average dip to a pleasant 22.2°C (72°F) in September, subtly cooler than its daytime highs.

Humidity

In September, the average relative humidity in Futtsu is 78%.

Rainfall

In Futtsu, in September, it is raining for 16.5 days, with typically 120mm (4.72") of accumulated precipitation. In Futtsu, during the entire year, the rain falls for 178.2 days and collects up to 1117mm (43.98") of precipitation.

Snowfall

April through December are months without snowfall in Futtsu.

Sea temperature

In Futtsu, in September, the average water temperature is 25.9°C (78.6°F).
Note: For any water activity, the surface water temperatures in the range of 25°C (77°F) to 29°C (84.2°F) are deemed excellent and incredibly pleasant for longer durations.

Daylight

The average length of the day in September in Futtsu is 12h and 25min.
On the first day of the month, sunrise is at 05:13 and sunset at 18:07. On the last day of September, in Futtsu, sunrise is at 05:34 and sunset at 17:26 JST.

Sunshine

The average sunshine in September in Futtsu is 7.9h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 6 during September leads to these instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Notice! The Sun's UV exposure elevates with sand and water reflections.

Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature in Futtsu, Japan, during September is 25.7°C (78.3°F) and the low-temperature is 22.2°C (72°F). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 34°C (93.2°F).

The average relative humidity in September in Futtsu, Japan, is 78%.

In Futtsu, during September, the rain falls for 16.5 days and regularly aggregates up to 120mm (4.72") of precipitation.

April through December are months without snowfall in Futtsu.

In Futtsu, Japan, the average seawater temperature in September is 25.9°C (78.6°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

In Futtsu, the average day length in September is 12h and 25min.

On the first day of September in Futtsu, Japan, sunrise is at 05:13 and sunset at 18:07. On the last day of the month, sunrise is at 05:34 and sunset at 17:26 JST.

The average sunshine duration in September in Futtsu is 7.9h.

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

28.8°C

25.7°C

21.5°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

17.3km/h

17.4km/h

19.6km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

16.4

11.2

8.8

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Futtsu, Japan

Average high temperature in September: 25.7°C

The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (9.7°C).

Average low temperature in September: 22.2°C

The month with the highest average low temperature is August (25.1°C).
The coldest month (with the lowest average low temperature) is January (5.3°C).

Average pressure in September
Futtsu, Japan

Average pressure in September: 1013.2mbar

The month with the highest atmospheric pressure is November (1017.8mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).

Average wind speed in September
Futtsu, Japan

Average wind speed in September: 16.6km/h

The windiest month (with the highest average wind speed) is March (20.9km/h).
The calmest month (with the lowest average wind speed) is June (15.7km/h).

Average humidity in September
Futtsu, Japan

Average humidity in September: 78%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is January (63%).

Average rainfall in September
Futtsu, Japan

Average rainfall in September: 120mm

The wettest month (with the highest rainfall) is October (156mm).
The driest month (with the least rainfall) is August (55mm).

Average rainfall days in September
Futtsu, Japan

Average rainfall days in September: 16.5 days

The month with the highest number of rainy days is October (18.8 days).
The month with the least rainy days is January (9.8 days).

Average snowfall in September
Futtsu, Japan

Average snowfall in September: 0mm

The month with the highest snowfall is February (9mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in September
Futtsu, Japan

Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and February (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).

Average sea temperature in September
Futtsu, 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
Futtsu, Japan

Average daylight in September: 12h and 24min

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 54min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).

Average sunshine days in September
Futtsu, Japan

Average sunshine days in September: 11.2 days

The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is October (8.8 days).

Average UV index in September
Futtsu, 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 and December (UV index 3).

Average cloud cover in September
Futtsu, Japan

Average cloud cover in September: 38

The months with the most cloud cover are March and October (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in September
Futtsu, 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).