September weather forecast
Dalian, China

As September dawns, Dalian experiences a slight cooling trend hinting at the onset of autumn. The change of season brings about a welcoming drop in temperatures as well as in humidity levels. Remnants of the monsoon season are still evident with considerable rainfall recorded in this month. Nevertheless, ample sunshine and reduced heat result in a balanced climate. It's an ideal time to explore the colorful transformation of Dalian's natural landscape.

Temperature

The shift from August to September in Dalian, China, coincides with a small decrease in the average high-temperature, down to a still moderately hot 23.9°C (75°F) from a warm 27.3°C (81.1°F). The low-temperature average for Dalian during September stands at a refreshing 17.4°C (63.3°F).

Humidity

The average relative humidity in September in Dalian is 69%.

Rainfall

In Dalian, in September, it is raining for 6 days, with typically 65mm (2.56") of accumulated precipitation. Throughout the year, in Dalian, there are 72.5 rainfall days, and 602mm (23.7") of precipitation is accumulated.

Sea temperature

In Dalian, in September, the average water temperature is 21.9°C (71.4°F).
Note: Swimming in 21.9°C (71.4°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

The average length of the day in September is 12h and 27min.
On the first day of September, sunrise is at 05:22 and sunset at 18:24. On the last day of the month, sunrise is at 05:48 and sunset at 17:38 CST.

Sunshine

The average sunshine in September is 8.4h.

UV index

In September, the average daily maximum UV index in Dalian, China, is 7. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be wary! Reflections from sand and water make UV radiation more intense.