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
The arrival of September suggests a slight decrease in the average high-temperature, moving from a cool 10°C (50°F) in August to a chilly 6.9°C (44.4°F). The September nights show a slight decrease to a mean low-temperature of 2.3°C (36.1°F).Humidity
The average relative humidity in September in Dalvik, Iceland, is 85%.Rainfall
In Dalvik, in September, it is raining for 21.7 days, with typically 79mm (3.11") of accumulated precipitation. In Dalvik, during the entire year, the rain falls for 177.8 days and collects up to 881mm (34.69") of precipitation.Snowfall
January through June, September through December are months with snowfall in Dalvik, Iceland. September is the first month it typically snows in Dalvik. Throughout September, in the average 1.8 snowfall days, it receives 32mm (1.26") of snow. In Dalvik, during the entire year, snow falls for 122.1 days and aggregates up to 2536mm (99.84") of snow.Sea temperature
In Dalvik, the average seawater temperature in September is 7.3°C (45.1°F).Note: Diving into 7.3°C (45.1°F) when it's under 10°C (50°F) can cause immediate cold shock symptoms, marked by hyperventilation.
Daylight
The average length of the day in September is 13h and 6min.On the first day of September in Dalvik, sunrise is at 05:51 and sunset at 20:36. On the last day of the month, sunrise is at 07:23 and sunset at 18:44 GMT.
Sunshine
In Dalvik, the average sunshine in September is 4.8h.UV index
April through September, with an average maximum UV index of 2, are months with the highest UV index in Dalvik, Iceland. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 2 in September leads to these guidelines:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is September cold in Dalvik?
What is the average humidity in September in Dalvik?
How much does it rain in Dalvik in September?
When does it start to snow in Dalvik?
What is the water temperature in September in Dalvik?
What is the average length of the day in September in Dalvik?
When is the sunrise / sunset in September in Dalvik?
How many hours of sunshine does Dalvik have in September?
What are the months with the highest UV index in Dalvik?
What is the UV index intensity in September in Dalvik?
Average temperature in September
Dalvik, Iceland
- Average high temperature in September: 6.9°C
The warmest month (with the highest average high temperature) is July (11.1°C).
The month with the lowest average high temperature is December (-3.8°C).
- Average low temperature in September: 2.3°C
The month with the highest average low temperature is July (5.6°C).
The coldest month (with the lowest average low temperature) is December (-9.1°C).
Average pressure in September
Dalvik, Iceland
- Average pressure in September: 1003.7mbar
The month with the highest atmospheric pressure is June (1014.3mbar).
The month with the lowest atmospheric pressure is January (998.5mbar).
Average wind speed in September
Dalvik, Iceland
- Average wind speed in September: 12.9km/h
The windiest month (with the highest average wind speed) is December (16.3km/h).
The calmest month (with the lowest average wind speed) is July (9.9km/h).
Average humidity in September
Dalvik, Iceland
- Average humidity in September: 85%
The months with the highest relative humidity are January, February, March and December (91%).
The month with the lowest relative humidity is June (77%).
Average rainfall in September
Dalvik, Iceland
- Average rainfall in September: 79mm
The wettest month (with the highest rainfall) is December (115mm).
The driest month (with the least rainfall) is June (40mm).
Average rainfall days in September
Dalvik, Iceland
- Average rainfall days in September: 21.7 days
The months with the highest number of rainy days are July and August (22.3 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in September
Dalvik, Iceland
- Average snowfall in September: 32mm
The month with the highest snowfall is December (511mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Dalvik, Iceland
- Average snowfall days in September: 1.8 days
The month with the highest number of snowfall days is March (20.9 days).
The months with the least snowfall days are July and August (0 days).
Average sea temperature in September
Dalvik, Iceland
- Average sea temperature in September: 7.3°C
The best month for swimming (with the highest average sea temperature) is August (9.3°C).
The coldest month (with the lowest average sea temperature) is February (2.3°C).
Average daylight in September /
Average sunshine in September
Dalvik, Iceland
- Average daylight in September: 13h and 1min
The month with the longest days is July (Average daylight: 20h and 54min).
The month with the shortest days is December (Average daylight: 3h and 12min).
- Average sunshine in September: 4h and 5min
The month with the most sunshine is May (Average sunshine: 6h and 42min).
The month with the least sunshine is June (Average sunshine: 1h and 6min).
Average sunshine days in September
Dalvik, Iceland
- Average sunshine days in September: 5.7 days
The month with the most sunshine days is May (8.9 days).
The month with the least sunshine days is September (5.7 days).
Average UV index in September
Dalvik, Iceland
- Average UV index in September: 2
The months with the highest UV index are April, May, June, July, August and September (UV index 2).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover in September
Dalvik, Iceland
- Average cloud cover in September: 65
The month with the most cloud cover is March (Cloud cover 72).
The month with the least cloud cover is June (Cloud cover 62).
Average visibility in September
Dalvik, Iceland
- Average visibility in September: 8km
The month with the highest visibility is June (9km).
The months with the lowest visibility are January, February, March, April, November and December (7km).
Dalvik, Iceland
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