Dandong weather in September
September is one of the best months to visit Dandong: highs of 24°C (74°F) and about 87 mm (3.4 in) of rain on average. Nights average 14°C (58°F) and cloud cover 55% (NASA POWER, 2001–2025 averages). The sea averages 25°C (77°F). It is the 4th wettest month of the year and the 4th warmest. Compared with August, it is cooler and drier; October brings highs of 17°C (62°F) and 54 mm (2.1 in) of rain.
Is September a good time to visit Dandong?
best month Weather score 75/100.
Yes. September is one of the best months for weather in Dandong.
Does it rain a lot in Dandong in September?
Some rain is normal: about 87 mm (3.4 in) falls in an average September. It is the 4th wettest month of the year.
How warm is Dandong in September?
Days average 24°C (74°F) and nights 14°C (58°F).
Dandong weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | -3°C (26°F) | -14°C (7°F) | 6 mm | 41% | -1°C (29°F) | least pleasant |
| February | 0°C (33°F) | -10°C (14°F) | 18 mm | 46% | -1°C (30°F) | least pleasant |
| March | 7°C (44°F) | -4°C (25°F) | 20 mm | 48% | 3°C (37°F) | least pleasant |
| April | 14°C (58°F) | 2°C (36°F) | 55 mm | 56% | 10°C (50°F) | fair |
| May | 21°C (70°F) | 9°C (49°F) | 85 mm | 60% | 17°C (62°F) | best |
| June | 25°C (78°F) | 16°C (60°F) | 116 mm | 70% | 23°C (73°F) | best |
| July | 28°C (82°F) | 20°C (68°F) | 261 mm | 78% | 27°C (80°F) | least pleasant |
| August | 27°C (81°F) | 20°C (68°F) | 252 mm | 67% | 29°C (84°F) | least pleasant |
| September | 24°C (74°F) | 14°C (58°F) | 87 mm | 55% | 25°C (77°F) | best |
| October | 17°C (62°F) | 6°C (43°F) | 54 mm | 47% | 18°C (64°F) | best |
| November | 7°C (45°F) | -2°C (28°F) | 46 mm | 50% | 10°C (51°F) | least pleasant |
| December | -1°C (29°F) | -11°C (13°F) | 13 mm | 43% | 2°C (35°F) | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months