East Java (Surabaya)
September
Weather in East Java for September 2025
Your guide to East Java weather in September - trends and predictions
In general, the average temperature in East Java at the beginning of September is 31.6 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 32.4 °C by the end of September.
Precipitation in East Java during September is a rare event, with an average of fewer than 2 rainy days.
Is September a good time to visit East Java? check out the best time to travel to East Java page.
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29
Dry days
1
Rainy days
0
Snow days
31°/23°
Temperatures
19 km/h
Avg max wind
62 %
Avg humidity
East Java in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  31° | 2 31° | 3 32° | 4 32° | 5 31° | 6 32° | 7  32° |
| 8 31° | 9 32° | 10 32° | 11 32° | 12 32° | 13 32° | 14 32° |
| 15 33° | 16 32° | 17  32° | 18  32° | 19 32° | 20 32° | 21 32° |
| 22 32° | 23 32° | 24 32° | 25 32° | 26 33° | 27 32° | 28 32° |
| 29 33° | 30 33° |
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Temperatures trend during September in East Java
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. | Sunny | 31° /23° | 0 mm | 9 | |
| 2 Sept. | Sunny | 31° /23° | 0.1 mm | 9 | |
| 3 Sept. | Sunny | 32° /23° | 0.1 mm | 9 | |
| 4 Sept. | Sunny | 32° /23° | 0.2 mm | 8 | |
| 5 Sept. | Sunny | 31° /23° | 0.1 mm | 8 | |
| 6 Sept. | Sunny | 32° /24° | 0 mm | 9 | |
| 7 Sept. | Partly cloudy | 32° /24° | 0.7 mm | 8 | |
| 8 Sept. | Partly cloudy | 31° /24° | 0.3 mm | 9 | |
| 9 Sept. | Sunny | 32° /24° | 0.3 mm | 8 | |
| 10 Sept. | Sunny | 32° /24° | 2.7 mm | 8 | |
| 11 Sept. | Sunny | 32° /24° | 0.3 mm | 8 | |
| 12 Sept. | Partly cloudy | 32° /24° | 0.2 mm | 8 | |
| 13 Sept. | Sunny | 32° /24° | 0 mm | 9 | |
| 14 Sept. | Partly cloudy | 32° /24° | 0 mm | 9 | |
| 15 Sept. | Sunny | 33° /23° | 0.1 mm | 8 | |
| 16 Sept. | Sunny | 32° /24° | 0 mm | 8 | |
| 17 Sept. | Patchy rain possible | 32° /24° | 0.3 mm | 8 | |
| 18 Sept. | Overcast | 32° /24° | 0 mm | 8 | |
| 19 Sept. | Patchy rain possible | 32° /24° | 0 mm | 8 | |
| 20 Sept. | Patchy rain possible | 32° /24° | 0.1 mm | 8 | |
| 21 Sept. | Partly cloudy | 32° /24° | 0.1 mm | 8 | |
| 22 Sept. | Sunny | 32° /24° | 0.1 mm | 8 | |
| 23 Sept. | Sunny | 32° /24° | 2.2 mm | 8 | |
| 24 Sept. | Patchy rain possible | 32° /25° | 0.4 mm | 8 | |
| 25 Sept. | Patchy rain possible | 32° /24° | 1.1 mm | 8 | |
| 26 Sept. | Sunny | 33° /24° | 1.9 mm | 8 | |
| 27 Sept. | Sunny | 32° /24° | 2.4 mm | 8 | |
| 28 Sept. | Sunny | 32° /25° | 0.4 mm | 8 | |
| 29 Sept. | Partly cloudy | 33° /25° | 0.1 mm | 8 | |
| 30 Sept. | Partly cloudy | 33° /25° | 0.1 mm | 9 | |
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Important Notice
Our weather forecast for East Java 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 East Java forecast closer to your planned date for the most up-to-date weather information.
East Java in September - FAQ
What are the expected maximum and minimum temperatures in East Java during September?
During September, expect a variety of temperatures with highs around 31° and lows near 23°, suitable for diverse activities and preferences.
How much rainfall should be expected in East Java during September?
Rainfall in East Java during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 1 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in East Java during September?
The average wind speed in East Java during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to East Java in September?
As you prepare for your trip to East Java 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 East Java, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Footwear
- Sandals/Flip-flops: Comfortable for warm climates
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
September rainfall patterns in East Java
Explore the daily rainfall trends and prepare for East Javas September weather 💧
UV exposure in East Java during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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