Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
In Úlfsá, the average high-temperature in September is almost the same as in August - a still chilly 6.6°C (43.9°F). The average low-temperature, in September, is 3.9°C (39°F).Humidity
The average relative humidity in September is 87%.Rainfall
In Úlfsá, during September, the rain falls for 17.6 days and regularly aggregates up to 55mm (2.17") of precipitation. Throughout the year, in Úlfsá, there are 124.6 rainfall days, and 664mm (26.14") of precipitation is accumulated.Snowfall
January through June, August through December are months with snowfall. In Úlfsá, in September, during 1.5 snowfall days, 15mm (0.59") of snow is typically accumulated. Throughout the year, in Úlfsá, there are 96.2 snowfall days, and 1214mm (47.8") of snow is accumulated.Sea temperature
In September, the average sea temperature in Úlfsá is 6°C (42.8°F).Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.
Daylight
In September, the average length of the day is 13h and 6min.On the first day of September in Úlfsá, sunrise is at 06:07 and sunset at 20:57. On the last day of the month, sunrise is at 07:39 and sunset at 19:05 GMT.
Sunshine
In Úlfsá, the average sunshine in September is 3.5h.UV index
In Úlfsá, the average daily maximum UV index in September is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: In September, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
FAQ
What is the temperature in September in Úlfsá?
What is the average humidity in September in Úlfsá?
How many days does it rain in September in Úlfsá?
How much does it snow in Úlfsá in September?
What is the sea water temperature in September in Úlfsá?
What is the average length of the day in September in Úlfsá?
When are sunrise and sunset in September in Úlfsá?
How long on average sun shines in September in Úlfsá?
What is the UV index reading in September in Úlfsá?
Average temperature in September
Úlfsá, Iceland
- Average high temperature in September: 6.6°C
The warmest month (with the highest average high temperature) is July (9.5°C).
The month with the lowest average high temperature is March (-1°C).
- Average low temperature in September: 3.9°C
The month with the highest average low temperature is July (6.3°C).
The coldest month (with the lowest average low temperature) is December (-4.3°C).
Average pressure in September
Úlfsá, Iceland
- Average pressure in September: 1003.4mbar
The month with the highest atmospheric pressure is June (1014.7mbar).
The month with the lowest atmospheric pressure is January (997.3mbar).
Average wind speed in September
Úlfsá, Iceland
- Average wind speed in September: 17.4km/h
The windiest months (with the highest average wind speed) are February and December (25.2km/h).
The calmest month (with the lowest average wind speed) is June (13.4km/h).
Average humidity in September
Úlfsá, Iceland
- Average humidity in September: 87%
The months with the highest relative humidity are January, February, October and December (88%).
The month with the lowest relative humidity is June (81%).
Average rainfall in September
Úlfsá, Iceland
- Average rainfall in September: 55mm
The wettest month (with the highest rainfall) is January (88mm).
The driest month (with the least rainfall) is June (20mm).
Average rainfall days in September
Úlfsá, Iceland
- Average rainfall days in September: 17.6 days
The month with the highest number of rainy days is September (17.6 days).
The month with the least rainy days is December (6.5 days).
Average snowfall in September
Úlfsá, Iceland
- Average snowfall in September: 15mm
The month with the highest snowfall is March (249mm).
The month with the least snowfall is July (0mm).
Average snowfall days in September
Úlfsá, Iceland
- Average snowfall days in September: 1.5 days
The month with the highest number of snowfall days is March (17.5 days).
The month with the least snowfall days is July (0 days).
Average sea temperature in September
Úlfsá, Iceland
- Average sea temperature in September: 6°C
The best months for swimming (with the highest average sea temperature) are July and August (7°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (3°C).
Average daylight in September /
Average sunshine in September
Úlfsá, Iceland
- Average daylight in September: 13h and 1min
The month with the longest days is July (Average daylight: 21h and 0min).
The month with the shortest days is December (Average daylight: 3h and 6min).
- Average sunshine in September: 3h and 3min
The month with the most sunshine is August (Average sunshine: 5h and 48min).
The month with the least sunshine is June (Average sunshine: 0h and 24min).
Average sunshine days in September
Úlfsá, Iceland
- Average sunshine days in September: 9.5 days
The month with the most sunshine days is June (18 days).
The month with the least sunshine days is February (6.7 days).
Average UV index in September
Úlfsá, Iceland
- Average UV index in September: 2
The month with the highest UV index is July (UV index 3).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in September
Úlfsá, Iceland
- Average cloud cover in September: 74
The month with the most cloud cover is March (Cloud cover 81).
The month with the least cloud cover is June (Cloud cover 65).
Average visibility in September
Úlfsá, Iceland
- Average visibility in September: 9km
The months with the highest visibility are May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, March, April, November and December (8km).
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