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India weather

Weather in Bihar for September 2025

Your guide to Bihar weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Bihar has been nearly identical to the historical average, with a temperature of 35 °C (showing only a slight deviation of -0.2 °C).

  • Expect cooler weather in the next days in Bihar with the forecast suggesting a temperature of 32.9 °C, lower than the historical average.

  • In general, the average temperature in Bihar at the beginning of September is 36.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 33 °C by the end of September.

    • Rain 🌧️

  • Bihar experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 142.7 mm.

Average dry days
6
Dry days
Average rainy days
24
Rainy days
Average snowy days
0
Snow days
Average temperatures
34°/27°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
69 %
Avg humidity

Bihar Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Partly cloudy
36°
2
Partly cloudy
37°
3
Partly cloudy
37°
4
Patchy light rain with thunder
36°
5
Patchy light drizzle
36°
6
Patchy rain possible
36°
7
Patchy rain possible
36°
8
Moderate or heavy rain shower
35°
9
Light rain shower
36°
10
Light rain shower
34°
11
Patchy rain possible
35°
12
Partly cloudy
36°
13
Light rain shower
35°
14
Light rain shower
33°
15
Light rain shower
30°
16
Light rain shower
31°
17
Moderate rain
32°
18
Moderate rain
31°
19
Moderate rain
33°
20
Moderate rain
32°
21
Patchy rain possible
34°
22
Partly cloudy
34°
23
Patchy rain possible
34°
24
Partly cloudy
34°
25
Partly cloudy
35°
26
Partly cloudy
36°
27
Sunny
37°
28
Patchy rain possible
31°
29
Patchy rain possible
27°
30
Patchy rain possible
31°

Temperatures trend during September in Bihar

See the weather trend as well as the moving average line

September weather in Bihar day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 36° /28° 0 mm 8
2 Sept. Partly cloudy
Partly cloudy
 37° /28° 0.5 mm 8
3 Sept. Partly cloudy
Partly cloudy
 37° /28° 0.8 mm 8
4 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 36° /28° 2.1 mm 8
5 Sept. Patchy light drizzle
Patchy light drizzle
 36° /27° 8.7 mm 8
6 Sept. Patchy rain possible
Patchy rain possible
 36° /27° 3.4 mm 8
7 Sept. Patchy rain possible
Patchy rain possible
 36° /29° 2.8 mm 8
8 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 35° /29° 4.4 mm 8
9 Sept. Light rain shower
Light rain shower
 36° /28° 2.4 mm 8
10 Sept. Light rain shower
Light rain shower
 34° /27° 2.8 mm 7
11 Sept. Patchy rain possible
Patchy rain possible
 35° /28° 1.4 mm 8
12 Sept. Partly cloudy
Partly cloudy
 36° /28° 6.5 mm 8
13 Sept. Light rain shower
Light rain shower
 35° /27° 4.5 mm 7
14 Sept. Light rain shower
Light rain shower
 33° /27° 6.8 mm 7
15 Sept. Light rain shower
Light rain shower
 30° /25° 12.2 mm 7
16 Sept. Light rain shower
Light rain shower
 31° /25° 6.1 mm 7
17 Sept. Moderate rain
Moderate rain
 32° /25° 8.9 mm 1.5
18 Sept. Moderate rain
Moderate rain
 31° /25° 9.4 mm 0.9
19 Sept. Moderate rain
Moderate rain
 33° /26° 15.2 mm 2
20 Sept. Moderate rain
Moderate rain
 32° /26° 9.6 mm 1.7
21 Sept. Patchy rain possible
Patchy rain possible
 34° /27° 4 mm 2.5
22 Sept. Partly cloudy
Partly cloudy
 34° /28° 0.1 mm 8
23 Sept. Patchy rain possible
Patchy rain possible
 34° /28° 0.2 mm 7
24 Sept. Partly cloudy
Partly cloudy
 34° /28° 0 mm 8
25 Sept. Partly cloudy
Partly cloudy
 35° /28° 0 mm 8
26 Sept. Partly cloudy
Partly cloudy
 36° /30° 0 mm 8
27 Sept. Sunny
Sunny
 37° /29° 0 mm 8
28 Sept. Patchy rain possible
Patchy rain possible
 31° /26° 1.9 mm 6
29 Sept. Patchy rain possible
Patchy rain possible
 27° /25° 3 mm 6
30 Sept. Patchy rain possible
Patchy rain possible
 31° /24° 1.9 mm 6
Next
Important Notice
Our weather forecast for Bihar 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 Bihar forecast closer to your planned date for the most up-to-date weather information.
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Bihar in September - FAQ

What are the expected maximum and minimum temperatures in Bihar during September?
During September, expect a variety of temperatures with highs around 34° and lows near 27°, suitable for diverse activities and preferences.
How much rainfall should be expected in Bihar during September?
Significant rainfall exceeding 142.7 mm is expected in Bihar during September, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Bihar during September?
The average wind speed in Bihar during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Bihar

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

UV exposure in Bihar during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Get accurate weather forecasts for Bihar, located at latitude 25.594 and longitude 85.136. Stay updated with localized weather information tailored for Bihar.

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