Surabaya
September
Weather in Surabaya for September 2025
Your guide to Surabaya weather in September - trends and predictions
In general, the average temperature in Surabaya 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 Surabaya during September is a rare event, with an average of fewer than 2 rainy days.
Is September a good time to visit Surabaya? check out the best time to travel to Surabaya 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
Surabaya 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 Surabaya
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 Surabaya 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 Surabaya forecast closer to your planned date for the most up-to-date weather information.
Surabaya in September - FAQ
What are the expected maximum and minimum temperatures in Surabaya 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 Surabaya during September?
Rainfall in Surabaya 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 Surabaya during September?
The average wind speed in Surabaya during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Surabaya in September?
As you prepare for your trip to Surabaya 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 Surabaya, 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 Surabaya
Explore the daily rainfall trends and prepare for Surabayas September weather 💧
UV exposure in Surabaya during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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