Riau (Batam)
September
Weather in Riau for September 2027
Your guide to Riau weather in September - trends and predictions
In general, the average temperature in Riau at the beginning of September is 29.6 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 30 °C by the end of September.
Riau experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 195.4 mm.
Is September a good time to visit Riau? check out the best time to travel to Riau page.
✨ Is September a good time to visit Riau? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
5
Dry days
25
Rainy days
0
Snow days
30°/26°
Temperatures
16 km/h
Avg max wind
74 %
Avg humidity
Riau Weather September
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Temperatures trend during September in Riau
See the weather trend as well as the moving average line
September weather in Riau day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain | 30° /26° | 2.6 mm | 9 | |
| 2 Sept. | Light rain | 30° /26° | 9.2 mm | 9 | |
| 3 Sept. | Light rain | 30° /26° | 4 mm | 9 | |
| 4 Sept. | Light rain | 29° /26° | 4.3 mm | 9 | |
| 5 Sept. | Light rain | 30° /26° | 7.6 mm | 7 | |
| 6 Sept. | Light rain | 29° /26° | 5.8 mm | 5 | |
| 7 Sept. | Light rain | 30° /26° | 3.9 mm | 6 | |
| 8 Sept. | Light rain | 29° /25° | 4.2 mm | 7 | |
| 9 Sept. | Light rain | 29° /25° | 6.1 mm | 7 | |
| 10 Sept. | Light rain | 29° /26° | 6.9 mm | 5 | |
| 11 Sept. |  Moderate rain | 30° /26° | 12.9 mm | 5 | |
| 12 Sept. | Moderate rain | 29° /25° | 11 mm | 5 | |
| 13 Sept. | Light rain | 28° /25° | 4.8 mm | 8 | |
| 14 Sept. | Light rain | 30° /25° | 4.6 mm | 6 | |
| 15 Sept. | Light rain | 30° /26° | 4.4 mm | 6 | |
| 16 Sept. | Light rain | 30° /26° | 3.2 mm | 6 | |
| 17 Sept. | Light rain | 29° /26° | 6.8 mm | 5 | |
| 18 Sept. | Light rain | 30° /26° | 4.8 mm | 8 | |
| 19 Sept. | Light rain | 30° /26° | 8.2 mm | 6 | |
| 20 Sept. | Light rain | 30° /26° | 7.3 mm | 6 | |
| 21 Sept. | Light rain | 30° /26° | 4.4 mm | 6 | |
| 22 Sept. | Light rain | 31° /26° | 5.6 mm | 6 | |
| 23 Sept. | Light rain | 31° /26° | 4.9 mm | 6 | |
| 24 Sept. | Light rain | 30° /26° | 3.4 mm | 6 | |
| 25 Sept. | Light rain | 31° /25° | 7.2 mm | 6 | |
| 26 Sept. | Light rain | 30° /26° | 5.9 mm | 7 | |
| 27 Sept. | Moderate rain | 29° /25° | 19.6 mm | 5 | |
| 28 Sept. | Light rain | 30° /26° | 3.9 mm | 5 | |
| 29 Sept. | Light rain | 30° /26° | 7.9 mm | 7 | |
| 30 Sept. | Light rain | 30° /26° | 9.9 mm | 7 | |
| Next | |||||
Important Notice
Our weather forecast for Riau 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 Riau forecast closer to your planned date for the most up-to-date weather information.
Change Month
Riau weather in September vs August vs October
Compare September weather in Riau with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
| August | September | October | |
|---|---|---|---|
| Weather |  Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 30°/26° | 30°/26° | 30°/26° |
| Rainfall | 176 mm | 195 mm | 165 mm |
| Wind | 17.6 km/h | 16 km/h | 14.7 km/h |
| Humidity | 74% | 74% | 73% |
| Rainy days | 26 days | 25 days | 25 days |
| Dry days | 5 days | 5 days | 6 days |
Planning a trip to Riau? Discover the best time to visit
Riau in September - FAQ
What are the expected maximum and minimum temperatures in Riau during September?
During September, expect a variety of temperatures with highs around 30° and lows near 26°, suitable for diverse activities and preferences.
How much rainfall should be expected in Riau during September?
Significant rainfall exceeding 195.4 mm is expected in Riau during September, occurring over more than 25 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Riau during September?
The average wind speed in Riau during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Riau
Explore the daily rainfall trends and prepare for Riaus September weather 💧
Typically, Riau has 25 rainy days in September with a total of 195.4 mm of rainfall.
UV exposure in Riau during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
What to pack to Riau in September?
Warm & sunny · highs around 30 °C, frequent showers
As you prepare for your trip to Riau 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 Riau, during September, is comfortable and enjoyable, regardless of the weather conditions.
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🧥 Clothing
👟 Footwear
🎒 Accessories
🧴 Personal Items
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