September weather forecast
Narsarsuaq, Greenland

With the ingress of September, Narsarsuaq experiences a robust autumnal feel. There is a distinct dip in temperatures from 13.2°C (55.8°F) to 2°C (35.6°F) compared to August's highs. As the warmth retreats, the rainfall persists, making September another month of plentiful precipitation. Contrary to the trending pattern, the number of rainfall days decreases, indicating heavier, yet less frequent showers. The advent of cold weather marks the return of snowfall days, forecasting the impending winter.

Temperature

With the arrival of September, Narsarsuaq notices a mild change in the average high-temperature, sliding from August's refreshing 13.2°C (55.8°F) to a chilly 9°C (48.2°F). Throughout September, an average nighttime temperature of 2°C (35.6°F) is experienced in Narsarsuaq.

Rainfall

In Narsarsuaq, in September, during 11.2 rainfall days, 68mm (2.68") of precipitation is typically accumulated. In Narsarsuaq, during the entire year, the rain falls for 121.8 days and collects up to 614mm (24.17") of precipitation.

Snowfall

January through June, August through December are months with snowfall. In September, snow falls for 1.3 days. Throughout the year, there are 59.7 snowfall days.

Sea temperature

In September, the average sea temperature in Narsarsuaq is 4°C (39.2°F).
Note: When swimming, this state is excessively cold, posing a lethal risk. Absent the protection of insulated waterproof wear, hypothermia is likely to occur immediately.

Daylight

In September, the average length of the day is 12h and 53min.
On the first day of September in Narsarsuaq, Greenland, sunrise is at 06:55 and sunset at 21:07. On the last day of the month, sunrise is at 08:07 and sunset at 19:35 -01.

Sunshine

In Narsarsuaq, the average sunshine in September is 4.5h.

UV index

In Narsarsuaq, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 3 translates into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.