Weather in Chiang Mai for September 2027
In general, the average temperature in Chiang Mai at the beginning of September is 30.3 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 28.6 °C by the end of September.
Chiang Mai experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 342.7 mm.
Is September a good time to visit Chiang Mai? check out the best time to travel to Chiang Mai page.
✨ Is September a good time to visit Chiang Mai? – Ask the AI Weatherman
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Chiang Mai Weather September
Temperatures trend during September in Chiang Mai
September weather in Chiang Mai day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Moderate rain | 30° /22° | 10.8 mm | 6 | |
| 2 Sept. | Moderate rain | 30° /21° | 10.7 mm | 6 | |
| 3 Sept. |  Light rain | 31° /22° | 4.8 mm | 7 | |
| 4 Sept. | Light rain | 31° /22° | 6 mm | 7 | |
| 5 Sept. | Moderate rain | 30° /22° | 12.8 mm | 6 | |
| 6 Sept. | Moderate rain | 29° /22° | 10.5 mm | 7 | |
| 7 Sept. |  Patchy light rain with thunder | 31° /22° | 12.1 mm | 6 | |
| 8 Sept. | Moderate rain | 31° /22° | 12.9 mm | 6 | |
| 9 Sept. |  Heavy rain | 28° /22° | 27 mm | 5 | |
| 10 Sept. | Moderate rain | 27° /22° | 13.1 mm | 5 | |
| 11 Sept. | Moderate rain | 28° /21° | 13.3 mm | 6 | |
| 12 Sept. |  Patchy rain possible | 29° /21° | 2.2 mm | 7 | |
| 13 Sept. | Light rain | 31° /22° | 3 mm | 7 | |
| 14 Sept. | Light rain | 29° /22° | 8.3 mm | 6 | |
| 15 Sept. |  Heavy rain at times | 29° /22° | 7.3 mm | 6 | |
| 16 Sept. | Moderate rain | 29° /22° | 11.1 mm | 6 | |
| 17 Sept. | Light rain | 29° /22° | 9.1 mm | 6 | |
| 18 Sept. | Moderate rain | 28° /21° | 10.9 mm | 6 | |
| 19 Sept. | Patchy light rain with thunder | 29° /22° | 8.3 mm | 6 | |
| 20 Sept. |  Moderate or heavy rain shower | 29° /22° | 8.6 mm | 6 | |
| 21 Sept. | Moderate or heavy rain shower | 30° /22° | 9.6 mm | 6 | |
| 22 Sept. | Moderate rain | 31° /21° | 10.4 mm | 6 | |
| 23 Sept. | Moderate rain | 29° /21° | 16 mm | 7 | |
| 24 Sept. | Moderate rain | 28° /22° | 11.8 mm | 7 | |
| 25 Sept. | Moderate rain | 29° /22° | 19.9 mm | 6 | |
| 26 Sept. | Heavy rain at times | 29° /21° | 13.2 mm | 6 | |
| 27 Sept. | Moderate rain | 29° /22° | 11.3 mm | 6 | |
| 28 Sept. | Moderate rain | 29° /21° | 12 mm | 6 | |
| 29 Sept. | Patchy light rain with thunder | 29° /21° | 26.3 mm | 6 | |
| 30 Sept. | Light rain | 28° /21° | 9.5 mm | 6 | |
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Chiang Mai weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 29°/22° | 29°/22° | 30°/21° |
| Rainfall | 310 mm | 343 mm | 229 mm |
| Wind | 5.7 km/h | 5.7 km/h | 5.3 km/h |
| Humidity | 87% | 88% | 85% |
| Rainy days | 27 days | 26 days | 22 days |
| Dry days | 4 days | 4 days | 9 days |
Planning a trip to Chiang Mai? Discover the best time to visit
Chiang Mai in September - FAQ
What are the expected maximum and minimum temperatures in Chiang Mai during September?
How much rainfall should be expected in Chiang Mai during September?
What are the typical wind conditions in Chiang Mai during September?
September rainfall patterns in Chiang Mai
UV exposure in Chiang Mai during September
What to pack to Chiang Mai in September?
Warm & sunny · highs around 29 °C, frequent showers
As you prepare for your trip to Chiang Mai 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 Chiang Mai, during September, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
🧴 Personal Items
Where is Chiang Mai?Get accurate weather forecasts for Chiang Mai, located at latitude 18.79 and longitude 98.985. Stay updated with localized weather information tailored for Chiang Mai.