September weather forecastSumba, Faroe Islands
September
Weather in September
September transitions Sumba from summer to autumn, with temperatures starting their descent to cooler degrees. The temperature continues to cool down, with the average hovering at 10.3°C (50.5°F), a drop from the summer month of August. Rising cloud cover and a gradual decrease in sunshine hours herald the arrival of the autumn season. Increasing wind speeds towards the end of September signal the arrival of the upcoming chilling winter. With the declining temperature, there's a solitary incidence of snowfall, paving the way for wintry months ahead.Temperature
The arrival of September sees a recorded average high-temperature of a still cool 11.4°C (52.5°F), showing little divergence from the previous month's conditions. Sumba registers an average low-temperature of 10.3°C (50.5°F) throughout September, a modest decrease from its daytime highs.Humidity
The average relative humidity in September is 86%.Rainfall
In Sumba, in September, it is raining for 20.2 days, with typically 47mm (1.85") of accumulated precipitation. Throughout the year, in Sumba, there are 242.9 rainfall days, and 709mm (27.91") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September, November and December. September is the first month it typically snows in Sumba. Throughout September, in the average 0.1 snowfall days, it receives 1mm (0.04") of snow. Throughout the year, there are 10.9 snowfall days, and 50mm (1.97") of snow is accumulated.Daylight
The average length of the day in September is 12h and 54min.On the first day of September in Sumba, Faroe Islands, sunrise is at 06:19 and sunset at 20:33. On the last day of the month, sunrise is at 07:32 and sunset at 19:00 WEST.
Sunshine
The average sunshine in September is 5.7h.UV index
The months with the highest UV index are May through October, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, an average UV index of 3 transforms into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sumba, Faroe Islands
- Average high temperature in September: 11.4°C
The warmest month (with the highest average high temperature) is August (12°C).
The month with the lowest average high temperature is March (7.1°C).
- Average low temperature in September: 10.3°C
The month with the highest average low temperature is August (10.8°C).
The coldest month (with the lowest average low temperature) is March (5°C).
Average pressure in September
Sumba, Faroe Islands
- Average pressure in September: 1007.7mbar
The month with the highest atmospheric pressure is June (1014.3mbar).
The month with the lowest atmospheric pressure is December (1000.3mbar).
Average wind speed in September
Sumba, Faroe Islands
- Average wind speed in September: 30.9km/h
The windiest month (with the highest average wind speed) is January (40.6km/h).
The calmest month (with the lowest average wind speed) is June (23.6km/h).
Average humidity in September
Sumba, Faroe Islands
- Average humidity in September: 86%
The month with the highest relative humidity is July (89%).
The months with the lowest relative humidity are January, February and December (75%).
Average rainfall in September
Sumba, Faroe Islands
- Average rainfall in September: 47mm
The wettest month (with the highest rainfall) is December (97mm).
The driest month (with the least rainfall) is June (28mm).
Average rainfall days in September
Sumba, Faroe Islands
- Average rainfall days in September: 20.2 days
The month with the highest number of rainy days is November (24.1 days).
The month with the least rainy days is June (13.8 days).
Average snowfall in September
Sumba, Faroe Islands
- Average snowfall in September: 1mm
The month with the highest snowfall is March (15mm).
The months with the least snowfall are June, July, August and October (0mm).
Average snowfall days in September
Sumba, Faroe Islands
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is March (2.6 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Sumba, Faroe Islands
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 19h and 18min).
The month with the shortest days is December (Average daylight: 5h and 36min).
- Average sunshine in September: 5h and 42min
The month with the most sunshine is June (Average sunshine: 8h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in September
Sumba, Faroe Islands
- Average sunshine days in September: 7.5 days
The month with the most sunshine days is June (13 days).
The month with the least sunshine days is December (3.5 days).
Average UV index in September
Sumba, Faroe Islands
- Average UV index in September: 3
The months with the highest UV index are May, June, July, August, September and October (UV index 3).
The months with the lowest UV index are January, February, March, April, November and December (UV index 2).
Average cloud cover in September
Sumba, Faroe Islands
- Average cloud cover in September: 63
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 62).
Average visibility in September
Sumba, Faroe Islands
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).
