Sichuan weather in September
September is a fair month to visit Sichuan: highs of 27°C (81°F) and about 128 mm (5.0 in) of rain on average. Nights average 18°C (65°F) and cloud cover 87% (NASA POWER, 2001–2025 averages). It is the 4th wettest month of the year and the 5th warmest. Compared with August, it is cooler and drier; October brings highs of 22°C (72°F) and 59 mm (2.3 in) of rain.
Figures are long-term averages for Chengdu, the largest city in Sichuan. See below for other places.
Is September a good time to visit Sichuan?
fair month Weather score 61/100.
September is a fair month in Sichuan. The weather is usually best in Mar–May, Oct–Nov.
Does it rain a lot in Sichuan in September?
Some rain is normal: about 128 mm (5.0 in) falls in an average September. It is the 4th wettest month of the year.
How warm is Sichuan in September?
Days average 27°C (81°F) and nights 18°C (65°F).
Sichuan weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 11°C (51°F) | 0°C (32°F) | 12 mm | 81% | fair |
| February | 14°C (58°F) | 3°C (37°F) | 14 mm | 84% | fair |
| March | 20°C (68°F) | 8°C (46°F) | 33 mm | 84% | best |
| April | 26°C (78°F) | 13°C (55°F) | 60 mm | 82% | best |
| May | 29°C (85°F) | 17°C (63°F) | 96 mm | 84% | best |
| June | 32°C (89°F) | 20°C (69°F) | 129 mm | 85% | fair |
| July | 32°C (90°F) | 23°C (73°F) | 224 mm | 82% | least pleasant |
| August | 31°C (88°F) | 22°C (72°F) | 201 mm | 78% | least pleasant |
| September | 27°C (81°F) | 18°C (65°F) | 128 mm | 87% | fair |
| October | 22°C (72°F) | 13°C (56°F) | 59 mm | 87% | best |
| November | 17°C (63°F) | 7°C (45°F) | 23 mm | 81% | best |
| December | 12°C (53°F) | 1°C (35°F) | 11 mm | 80% | fair |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across Sichuan in September
Weather can differ a lot within Sichuan: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Chengdu | 27°C (81°F) | 18°C (65°F) | 128 mm | fair |
| Bazhong | 26°C (78°F) | 16°C (61°F) | 202 mm | least pleasant |
| Nanchong | 27°C (81°F) | 18°C (65°F) | 144 mm | fair |
| Dazhou | 27°C (80°F) | 18°C (64°F) | 169 mm | fair |
| Mianyang | 24°C (75°F) | 16°C (61°F) | 131 mm | fair |
| Zigong | 28°C (83°F) | 19°C (66°F) | 137 mm | fair |
| Neijiang | 28°C (83°F) | 19°C (66°F) | 137 mm | fair |
| Meishan | 27°C (80°F) | 18°C (65°F) | 143 mm | fair |
| Luzhou | 29°C (83°F) | 19°C (67°F) | 140 mm | fair |
| Ziyang | 27°C (81°F) | 18°C (65°F) | 134 mm | fair |
| Guang’an | 27°C (81°F) | 18°C (65°F) | 149 mm | fair |
| Yibin | 28°C (83°F) | 19°C (66°F) | 141 mm | fair |