September weather forecast
Varmahlíð, Iceland

September brings the onset of fall in Varmahlíð, with a noticeable drop in temperature from 1°C (33.8°F) to 8°C (46.4°F), marking a change from the comfortable warmth of August. The daylight hours start to lessen quite rapidly compared to the previous month, foreshadowing the onset of shorter fall days. Significant rainfall continues to be a trait of the weather, matching that of August. A downturn in the UV index manifests the lessening strength of the sun and hence the approach of cooler months.

Temperature

The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's cool 11°C (51.8°F) to a chilly 8°C (46.4°F). During September, the temperature in Varmahlíð is averaged to a low of 1°C (33.8°F) at night.

Rainfall

In Varmahlíð, in September, during 16 rainfall days, 55mm (2.17") of precipitation is typically accumulated. Throughout the year, there are 192 rainfall days, and 605mm (23.82") of precipitation is accumulated.

Daylight

In September, the average length of the day is 13h and 4min.
On the first day of September, sunrise is at 05:57 and sunset at 20:38. On the last day of the month, sunrise is at 07:26 and sunset at 18:48 GMT.

Sunshine

The average sunshine in September is 3h.

UV index

In September, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, the maximum UV index of 2 suggests this advice:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.