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Weather in Sendai for September 2025

Your guide to Sendai weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Sendai is slightly cooler than the historical average by -0.9 °C.

  • The forecast for the next days in Sendai predicts a temperature of 22.5 °C, which is cooler than the historical average.

  • In general, the average temperature in Sendai at the beginning of September is 28.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20 °C by the end of September.

    • Rain 🌧️

  • Sendai in September brings notable rainfall, with an average of 20 rainy days and a total precipitation of 160.6 mm.

    • More

  • Is September a good time to visit Sendai? check out the best time to travel to Sendai page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
10
Dry days
Average rainy days
20
Rainy days
Average snowy days
0
Snow days
Average temperatures
26°/20°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
81 %
Avg humidity

Sendai Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
29°
2
Light rain shower
32°
3
Partly cloudy
29°
4
Partly cloudy
25°
5
Sunny
25°
6
Patchy rain possible
29°
7
Patchy rain possible
28°
8
Light rain shower
25°
9
Light rain shower
27°
10
Patchy rain possible
26°
11
Patchy light rain
27°
12
Light rain shower
27°
13
Light rain shower
26°
14
Light drizzle
23°
15
Patchy rain possible
26°
16
Sunny
28°
17
Patchy rain possible
30°
18
Patchy rain possible
26°
19
Partly cloudy
21°
20
Patchy rain possible
21°
21
Patchy rain possible
18°
22
Patchy rain possible
22°
23
Patchy rain possible
23°
24
Patchy rain possible
21°
25
Patchy rain possible
22°
26
Moderate rain
18°
27
Moderate rain
16°
28
Patchy rain possible
24°
29
Light rain shower
19°
30
Patchy rain possible
20°

Temperatures trend during September in Sendai

See the weather trend as well as the moving average line

September weather in Sendai day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
 29° /23° 1.1 mm 7
2 Sept. Light rain shower
Light rain shower
 32° /23° 4.2 mm 7
3 Sept. Partly cloudy
Partly cloudy
 29° /21° 0.5 mm 7
4 Sept. Partly cloudy
Partly cloudy
 25° /20° 0.4 mm 7
5 Sept. Sunny
Sunny
 25° /20° 8.6 mm 6
6 Sept. Patchy rain possible
Patchy rain possible
 29° /20° 0.2 mm 7
7 Sept. Patchy rain possible
Patchy rain possible
 28° /21° 0.1 mm 7
8 Sept. Light rain shower
Light rain shower
 25° /22° 9.9 mm 6
9 Sept. Light rain shower
Light rain shower
 27° /21° 1.6 mm 6
10 Sept. Patchy rain possible
Patchy rain possible
 26° /21° 5.1 mm 6
11 Sept. Patchy light rain
Patchy light rain
 27° /21° 5.1 mm 6
12 Sept. Light rain shower
Light rain shower
 27° /21° 0.4 mm 6
13 Sept. Light rain shower
Light rain shower
 26° /21° 2.9 mm 6
14 Sept. Light drizzle
Light drizzle
 23° /20° 2.2 mm 5
15 Sept. Patchy rain possible
Patchy rain possible
 26° /21° 0.2 mm 1.2
16 Sept. Sunny
Sunny
 28° /20° 0 mm 1.7
17 Sept. Patchy rain possible
Patchy rain possible
 30° /22° 0.3 mm 1.6
18 Sept. Patchy rain possible
Patchy rain possible
 26° /17° 4 mm 0.3
19 Sept. Partly cloudy
Partly cloudy
 21° /17° 0 mm 5
20 Sept. Patchy rain possible
Patchy rain possible
 21° /16° 0.2 mm 4
21 Sept. Patchy rain possible
Patchy rain possible
 18° /17° 2.4 mm 4
22 Sept. Patchy rain possible
Patchy rain possible
 22° /17° 0.6 mm 4
23 Sept. Patchy rain possible
Patchy rain possible
 23° /18° 0.8 mm 4
24 Sept. Patchy rain possible
Patchy rain possible
 21° /16° 0.1 mm 4
25 Sept. Patchy rain possible
Patchy rain possible
 22° /16° 0.5 mm 4
26 Sept. Moderate rain
Moderate rain
 18° /17° 14.4 mm 4
27 Sept. Moderate rain
Moderate rain
 16° /15° 6.1 mm 4
28 Sept. Patchy rain possible
Patchy rain possible
 24° /20° 0.1 mm 5
29 Sept. Light rain shower
Light rain shower
 19° /18° 2 mm 4
30 Sept. Patchy rain possible
Patchy rain possible
 20° /17° 0.1 mm 5
Next
Important Notice
Our weather forecast for Sendai in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Sendai forecast closer to your planned date for the most up-to-date weather information.
Change Month
‹
›

Sendai weather in September vs August vs October

Compare September weather in Sendai with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AugustSeptemberOctober
WeatherPatchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures30°/22°26°/20°20°/14°
Rainfall337 mm161 mm78 mm
Wind15.8 km/h12.8 km/h14.6 km/h
Humidity81%81%76%
Rainy days8 days20 days17 days
Dry days23 days10 days14 days

Planning a trip to Sendai? Discover the best time to visit

Sendai in September - FAQ

What are the expected maximum and minimum temperatures in Sendai during September?
During September, expect a variety of temperatures with highs around 26° and lows near 20°, suitable for diverse activities and preferences.
How much rainfall should be expected in Sendai during September?
Significant rainfall exceeding 160.6 mm is expected in Sendai during September, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Sendai during September?
The average wind speed in Sendai during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Sendai in September?

As you prepare for your trip to Sendai in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Sendai, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Lightweight Clothing: T-shirts, blouses, shorts, skirts
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Umbrellas/Raincoats: For rainy days
  • Personal Items
    • Sunscreen: High SPF for sunny destinations
    • Lip Balm with SPF: To protect against chapped lips

September rainfall patterns in Sendai

Explore the daily rainfall trends and prepare for Sendais September weather 💧

UV exposure in Sendai during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

Quick links

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Location coordinates Where is Sendai?

Get accurate weather forecasts for Sendai, located at latitude 38.267 and longitude 140.867. Stay updated with localized weather information tailored for Sendai.

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