September weather forecast
Saiki, Japan

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Saiki, Japan, with an average temperature ranging between min 21.8°C (71.2°F) and max 25.9°C (78.6°F).

Temperature

September's arrival subtly correlates with a reduction in the average high-temperature, down from a moderately hot 29.3°C (84.7°F) in August to a still warm 25.9°C (78.6°F). During the September nights, Saiki's temperature maintains an average close to the daytime highs, settling at an agreeable 21.8°C (71.2°F).

Humidity

The average relative humidity in September is 80%.

Rainfall

In Saiki, in September, it is raining for 16.5 days, with typically 136mm (5.35") of accumulated precipitation. Throughout the year, there are 168.7 rainfall days, and 1189mm (46.81") of precipitation is accumulated.

Snowfall

In Saiki, snow does not fall in March through November.

Sea temperature

In Saiki, in September, the average water temperature is 27.1°C (80.8°F).
Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as ideal and highly pleasant for extended enjoyment in all water activities.

Daylight

In September, the average length of the day is 12h and 23min.
On the first day of September in Saiki, sunrise is at 05:47 and sunset at 18:37. On the last day of the month, sunrise is at 06:05 and sunset at 17:58 JST.

Sunshine

In Saiki, the average sunshine in September is 8.8h.

UV index

The average daily maximum UV index in September in Saiki is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 6 during September translates into the following directions:
Shun overexposure. Protection from sun ravages is indispensable. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be cautious! Sand and water surfaces make the Sun's UV rays more potent.
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Frequently asked questions

What is the average September temperature in Saiki?

The high-temperature in Saiki during September is 25.9°C (78.6°F) and the low-temperature is 21.8°C (71.2°F). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is appraised at 36°C (96.8°F).

What is the average humidity in September in Saiki?

In September, the average relative humidity is 80%.

How many days does it rain in September in Saiki?

In Saiki, Japan, in September, during 16.5 rainfall days, 136mm (5.35") of precipitation is typically accumulated.

When it does not snow in Saiki?

March through November are months without snowfall in Saiki, Japan.

What is the water temperature in September in Saiki?

In September, the average sea temperature is 27.1°C (80.8°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.

What is the average length of the day in September in Saiki?

In September, the average day length in Saiki, Japan, is 12h and 23min.

When are sunrise and sunset in September in Saiki?

On the first day of September in Saiki, Japan, sunrise is at 05:47 and sunset at 18:37. On the last day of the month, sunrise is at 06:05 and sunset at 17:58 JST.

How long on average sun shines in September in Saiki?

The average sunshine duration in September is 8.8h.

How high is the UV index in September in Saiki?

In September, the average daily maximum UV index in Saiki, Japan, is 6. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
Saiki, Japan

Average temperature in September - Saiki, Japan
  • Average high temperature in September: 25.9°C

The warmest month (with the highest average high temperature) is August (29.3°C).
The month with the lowest average high temperature is January (9.8°C).

  • Average low temperature in September: 21.8°C

The month with the highest average low temperature is August (24.6°C).
The coldest month (with the lowest average low temperature) is January (5.1°C).

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Average pressure in September
Saiki, Japan

Average pressure in September - Saiki, Japan
  • Average pressure in September: 1012mbar

The month with the highest atmospheric pressure is January (1021.3mbar).
The month with the lowest atmospheric pressure is June (1008.3mbar).

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Average wind speed in September
Saiki, Japan

Average wind speed in September - Saiki, Japan
  • Average wind speed in September: 11.9km/h

The windiest month (with the highest average wind speed) is January (16.8km/h).
The calmest month (with the lowest average wind speed) is June (9.8km/h).

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Average humidity in September
Saiki, Japan

Average humidity in September - Saiki, Japan
  • Average humidity in September: 80%

The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are January and March (71%).

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Average rainfall in September
Saiki, Japan

Average rainfall in September - Saiki, Japan
  • Average rainfall in September: 136mm

The wettest month (with the highest rainfall) is June (190mm).
The driest month (with the least rainfall) is January (38mm).

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Average rainfall days in September
Saiki, Japan

Average rainfall days in September - Saiki, Japan
  • Average rainfall days in September: 16.5 days

The month with the highest number of rainy days is July (23 days).
The month with the least rainy days is January (8.6 days).

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Average snowfall in September
Saiki, Japan

Average snowfall in September - Saiki, Japan
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (2mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in September
Saiki, Japan

Average snowfall days in September - Saiki, Japan
  • Average snowfall days in September: 0 days

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

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Average sea temperature in September
Saiki, Japan

Average sea temperature in September - Saiki, Japan
  • Average sea temperature in September: 27.1°C

The best month for swimming (with the highest average sea temperature) is August (28°C).
The coldest month (with the lowest average sea temperature) is February (17.3°C).

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Average daylight in September /
Average sunshine in September
Saiki, Japan

Average daylight in September / Average sunshine in September - Saiki, Japan
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in September
Saiki, Japan

Average sunshine days in September - Saiki, Japan
  • Average sunshine days in September: 12.2 days

The month with the most sunshine days is October (17.9 days).
The month with the least sunshine days is July (5.8 days).

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Average UV index in September
Saiki, Japan

Average UV index in September - Saiki, Japan
  • Average UV index in September: 6

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in September
Saiki, Japan

Average cloud cover in September - Saiki, Japan
  • Average cloud cover in September: 39

The month with the most cloud cover is June (Cloud cover 48).
The months with the least cloud cover are January, August, November and December (Cloud cover 33).

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Average visibility in September
Saiki, Japan

Average visibility in September - Saiki, Japan
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, August, September, October, November and December (10km).
The months with the lowest visibility are May, June and July (9km).

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Saiki, Japan

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