Bihar (Patna)
September
Weather in Bihar for September 2025
Your guide to Bihar weather in September - trends and predictions
In general, the average temperature in Bihar at the beginning of September is 36.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 31.9 °C by the end of September.
Bihar experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 142.7 mm.
Is September a good time to visit Bihar? check out the best time to travel to Bihar page.
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Temperatures
Rain 🌧️
More
6
Dry days
24
Rainy days
0
Snow days
34°/27°
Temperatures
17 km/h
Avg max wind
69 %
Avg humidity
Bihar in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  36° | 2 37° | 3 38° | 4  37° | 5  36° | 6 36° | 7 36° |
| 8  34° | 9 35° | 10 34° | 11 35° | 12 36° | 13  35° | 14  32° |
| 15 30° | 16 31° | 17 34° | 18 35° | 19  35° | 20 34° | 21 33° |
| 22 32° | 23 33° | 24 32° | 25 33° | 26 30° | 27 29° | 28 32° |
| 29 33° | 30 34° |
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Temperatures trend during September in Bihar
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Partly cloudy | 36° /28° | 0 mm | 9 | |
| 2 Sept. | Partly cloudy | 37° /28° | 0.3 mm | 9 | |
| 3 Sept. | Partly cloudy | 38° /28° | 0 mm | 9 | |
| 4 Sept. | Patchy light rain with thunder | 37° /28° | 2.2 mm | 9 | |
| 5 Sept. | Light rain shower | 36° /27° | 11.5 mm | 8 | |
| 6 Sept. | Patchy rain possible | 36° /27° | 4.9 mm | 8 | |
| 7 Sept. | Light rain shower | 36° /29° | 4.2 mm | 8 | |
| 8 Sept. | Moderate or heavy rain shower | 34° /28° | 6.5 mm | 8 | |
| 9 Sept. | Light rain shower | 35° /27° | 3.5 mm | 8 | |
| 10 Sept. | Light rain shower | 34° /27° | 3.6 mm | 7 | |
| 11 Sept. | Patchy rain possible | 35° /27° | 1.9 mm | 8 | |
| 12 Sept. | Partly cloudy | 36° /28° | 8.7 mm | 8 | |
| 13 Sept. | Overcast | 35° /28° | 1.4 mm | 8 | |
| 14 Sept. | Thundery outbreaks possible | 32° /26° | 3.5 mm | 7 | |
| 15 Sept. | Overcast | 30° /25° | 8.8 mm | 7 | |
| 16 Sept. | Light rain shower | 31° /25° | 6.1 mm | 7 | |
| 17 Sept. | Light rain shower | 34° /26° | 2.1 mm | 8 | |
| 18 Sept. | Patchy rain possible | 35° /27° | 0.6 mm | 9 | |
| 19 Sept. | Light drizzle | 35° /26° | 0.5 mm | 9 | |
| 20 Sept. | Light rain shower | 34° /26° | 0.8 mm | 8 | |
| 21 Sept. | Light rain shower | 33° /26° | 3.1 mm | 8 | |
| 22 Sept. | Light rain shower | 32° /25° | 4.6 mm | 8 | |
| 23 Sept. | Light rain shower | 33° /26° | 1.5 mm | 8 | |
| 24 Sept. | Patchy rain possible | 32° /26° | 2 mm | 7 | |
| 25 Sept. | Light rain shower | 33° /24° | 4.4 mm | 7 | |
| 26 Sept. | Light rain shower | 30° /24° | 9.3 mm | 7 | |
| 27 Sept. | Light rain shower | 29° /25° | 32.6 mm | 7 | |
| 28 Sept. | Partly cloudy | 32° /25° | 6 mm | 8 | |
| 29 Sept. | Partly cloudy | 33° /25° | 2.8 mm | 8 | |
| 30 Sept. | Patchy rain possible | 34° /27° | 5.2 mm | 8 | |
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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.
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.
What to pack to Bihar in September?
As you prepare for your trip to Bihar 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 Bihar, 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
- Sandals/Flip-flops: Comfortable for warm climates
- 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 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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