October weather forecast
Sendai, Japan

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Weather in October

October marks a consistent reduction in Sendai's temperature as autumn permeates the city. The decrease in temperature is accompanied by an increase in the frequency of rainfall events. Majestic autumn foliage becomes the highlight of this month, providing picture-perfect frames across Sendai. The city experiences a further decrease in daylight hours, contributing to the late autumn ambience. With the temperatures varying from 12.1°C (53.8°F) to 18.5°C (65.3°F) and the equal highest precipitation of 111mm (4.37") along with July, October is a month of variable weather conditions.

Temperature

The commencement of October indicates a shift in the average high-temperature, receding from September's warm 23.9°C (75°F) to a comfortable 18.5°C (65.3°F). Throughout the month of October, Sendai witnesses an average temperature of 12.1°C (53.8°F).

Humidity

The average relative humidity in October in Sendai is 76%.

Rainfall

The months with the most rainfall in Sendai are July and October, with an average 111mm (4.37") of precipitation.

Snowfall

In Sendai, snow does not fall in May through November.

Sea temperature

In Sendai, in October, the average water temperature is 19.2°C (66.6°F).
Note: Swimming is not a pleasurable activity for the majority in water at 19.2°C (66.6°F). Breathing control gets harder as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).

Daylight

In Sendai, the average length of the day in October is 11h and 13min.
On the first day of October, sunrise is at 05:32 and sunset at 17:19. On the last day of the month, sunrise is at 06:01 and sunset at 16:38 JST.

Sunshine

In October, the average sunshine is 7.3h.

UV index

In Sendai, the average daily maximum UV index in October is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: A maximum high UV index of 4 in October translates into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
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Frequently asked questions

What are October temperatures in Sendai?

In October, the average high-temperature and low-temperature in Sendai, Japan, are 18.5°C (65.3°F) and 12.1°C (53.8°F) respectively. In August, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is appraised at 32°C (89.6°F).

What is the average humidity in October in Sendai?

In October, the average relative humidity in Sendai is 76%.

What is the wettest month in Sendai?

The months with the most rainfall in Sendai, Japan, are July and October, with an average 111mm (4.37") of precipitation.

How many days does it rain in October in Sendai?

In October, in Sendai, the rain falls for 11.8 days. Throughout October, 111mm (4.37") of precipitation is accumulated.

When it does not snow in Sendai?

In Sendai, snow does not fall in May through November.

How cold is the water in October in Sendai?

In Sendai, the average seawater temperature in October is 19.2°C (66.6°F). Swimming in 19.2°C (66.6°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

What is the average length of the day in October in Sendai?

The average day length in October in Sendai, Japan, is 11h and 13min.

When is the sunrise / sunset in October in Sendai?

On the first day of October in Sendai, Japan, sunrise is at 05:32 and sunset at 17:19. On the last day of the month, sunrise is at 06:01 and sunset at 16:38 JST.

How long on average sun shines in October in Sendai?

In Sendai, the average sunshine duration in October is 7.3h.

What is the UV index intensity in October in Sendai?

In October, the average daily maximum UV index in Sendai is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND
Sep
October
Nov
Average high temperature
23.9°C 75°F
18.5°C 65.3°F
12.5°C 54.5°F
Average low temperature
17.5°C 63.5°F
12.1°C 53.8°F
6.8°C 44.2°F
Average pressure
1014mbar 29.94inHg
1017.5mbar 30.05inHg
1018.7mbar 30.08inHg
Average wind speed
9.7km/h 6mph
11.7km/h 7.3mph
11.9km/h 7.4mph
Average max. wind speed
10.2km/h 6.3mph
12.9km/h 8mph
13.1km/h 8.1mph
Average wind speed gusts
14.8km/h 9.2mph
17.8km/h 11.1mph
17.8km/h 11.1mph
Average humidity
80%
76%
75%
Average rainfall
66mm 2.6"
111mm 4.37"
27mm 1.06"
Average rainfall days
12.9
11.8
9.5
Average snowfall
0mm 0"
0mm 0"
0mm 0"
Average snowfall days
0
0
0
Average sea temperature
22.7°C 72.9°F
19.2°C 66.6°F
15.8°C 60.4°F
Average daylight
12h 2min
11h 1min
10h 1min
Average sunshine
7h 4min
7h 2min
5h 5min
Average sunshine days
14.1
16.3
17.6
Average UV index
5
4
2
Average cloud cover
40%
37%
37%
Average visibility
9km 5.6mi
10km 6.2mi
10km 6.2mi

Average temperature in October
Sendai, Japan

Average temperature in October - Sendai, Japan
  • Average high temperature in October: 18.5°C

The warmest month (with the highest average high temperature) is August (27.8°C).
The month with the lowest average high temperature is January (3.3°C).

  • Average low temperature in October: 12.1°C

The month with the highest average low temperature is August (21.4°C).
The coldest months (with the lowest average low temperature) are January and February (-1.7°C).

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Average pressure in October
Sendai, Japan

Average pressure in October - Sendai, Japan
  • Average pressure in October: 1017.5mbar

The month with the highest atmospheric pressure is November (1018.7mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).

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Average wind speed in October
Sendai, Japan

Average wind speed in October - Sendai, Japan
  • Average wind speed in October: 11.7km/h

The windiest month (with the highest average wind speed) is January (14.4km/h).
The calmest month (with the lowest average wind speed) is July (8.1km/h).

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Average humidity in October
Sendai, Japan

Average humidity in October - Sendai, Japan
  • Average humidity in October: 76%

The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are April and May (72%).

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Average rainfall in October
Sendai, Japan

Average rainfall in October - Sendai, Japan
  • Average rainfall in October: 111mm

The wettest months (with the highest rainfall) are July and October (111mm).
The driest month (with the least rainfall) is February (22mm).

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Average rainfall days in October
Sendai, Japan

Average rainfall days in October - Sendai, Japan
  • Average rainfall days in October: 11.8 days

The month with the highest number of rainy days is July (20.7 days).
The month with the least rainy days is January (8.7 days).

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Average snowfall in October
Sendai, Japan

Average snowfall in October - Sendai, Japan
  • Average snowfall in October: 0mm

The month with the highest snowfall is February (63mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).

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Average snowfall days in October
Sendai, Japan

Average snowfall days in October - Sendai, Japan
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).

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Average sea temperature in October
Sendai, Japan

Average sea temperature in October - Sendai, Japan
  • Average sea temperature in October: 19.2°C

The best month for swimming (with the highest average sea temperature) is August (23.9°C).
The coldest month (with the lowest average sea temperature) is March (7.5°C).

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Average daylight in October /
Average sunshine in October
Sendai, Japan

Average daylight in October / Average sunshine in October - Sendai, Japan
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in October: 7h and 2min

The month with the most sunshine is May (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

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Average sunshine days in October
Sendai, Japan

Average sunshine days in October - Sendai, Japan
  • Average sunshine days in October: 16.3 days

The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is July (7.2 days).

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Average UV index in October
Sendai, Japan

Average UV index in October - Sendai, Japan
  • Average UV index in October: 4

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in October
Sendai, Japan

Average cloud cover in October - Sendai, Japan
  • Average cloud cover in October: 37

The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is May (Cloud cover 36).

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Average visibility in October
Sendai, Japan

Average visibility in October - Sendai, Japan
  • Average visibility in October: 10km

The months with the highest visibility are October, November and December (10km).
The month with the lowest visibility is July (8km).

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Sendai, Japan

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