September weather forecast
Salem, MA

Salem's summer transitions into fall during September, with temperatures falling between 54°F (12.2°C) and 73°F (22.8°C). With the departure of the summer crowds, the city maintains its beauty with the leaves beginning to change colors. The sea temperature remains comfortable at 61°F (16.1°C) inviting people for a last dip before the cold sets in. Despite eight rainfall days, September allows the enjoyment of outdoor activities amidst the changing foliage.

Temperature

September is characterized by a mild reduction in the average high-temperature, from a moderately hot 80.6°F (27°C) in August to a still warm 73.4°F (23°C). Salem witnesses an average low-temperature of 53.6°F (12°C) throughout the month of September.

Rainfall

In Salem, in September, it is raining for 8 days, with typically 3.35" (85mm) of accumulated precipitation. Throughout the year, there are 124 rainfall days, and 43.03" (1093mm) of precipitation is accumulated.

Ocean temperature

In Salem, the average seawater temperature in September is 60.8°F (16°C).
Note: Swimming is not an enjoyable activity for the majority when the water is at 60.8°F (16°C). The difficulty of controlling breathing increases as the temperature dips from 69.8°F (21°C) to 59°F (15°C).

Daylight

In September, the average length of the day is 12h and 29min.
On the first day of the month, sunrise is at 6:09 am and sunset at 7:17 pm. On the last day of September, sunrise is at 6:40 am and sunset at 6:26 pm EDT.

Sunshine

The average sunshine in September is 8h.

UV index

In Salem, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index, 6 during September, leads to the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.