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 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
Hólmavík, Iceland, starts September with an average high-temperature of a chilly 8.5°C (47.3°F), hinting at a minimal fluctuation from August. Throughout September, Hólmavík's nights experience a slight temperature dip to an icy 4.5°C (40.1°F).Humidity
In Hólmavík, the average relative humidity in September is 82%.Rainfall
September is the month with the most rainfall in Hólmavík. Rain falls for 13.3 days and accumulates 36mm (1.42") of precipitation.Snowfall
January through June, September through December are months with snowfall in Hólmavík. September is the first month it typically snows in Hólmavík. Throughout September, in the average 1.6 snowfall days, it receives 22mm (0.87") of snow. Throughout the year, in Hólmavík, there are 68.1 snowfall days, and 512mm (20.16") of snow is accumulated.Daylight
In Hólmavík, the average length of the day in September is 13h and 5min.On the first day of the month, sunrise is at 06:05 and sunset at 20:47. On the last day of September, in Hólmavík, sunrise is at 07:36 and sunset at 18:57 GMT.
Sunshine
In Hólmavík, the average sunshine in September is 5.1h.UV index
In September, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A daily high UV index of 2 in September leads to these guidelines:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Enhance your sun protection with tightly woven, yet airy clothing. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Frequently asked questions
What is the average September temperature in Hólmavík?
What is the average humidity in September in Hólmavík?
What is the wettest month in Hólmavík?
How many days does it rain in September in Hólmavík?
When does it start to snow in Hólmavík?
How many hours of daylight does Hólmavík have in September?
What time are sunrise and sunset in September in Hólmavík?
How many hours of sunshine does Hólmavík have in September?
How high is the UV index in September in Hólmavík?
Average temperature in September
Hólmavík, Iceland
- Average high temperature in September: 8.5°C
The warmest month (with the highest average high temperature) is July (11.8°C).
The month with the lowest average high temperature is December (-0.5°C).
- Average low temperature in September: 4.5°C
The month with the highest average low temperature is July (7.4°C).
The coldest month (with the lowest average low temperature) is December (-4°C).
Average pressure in September
Hólmavík, Iceland
- Average pressure in September: 1003.6mbar
The month with the highest atmospheric pressure is June (1014.4mbar).
The month with the lowest atmospheric pressure is January (998mbar).
Average wind speed in September
Hólmavík, Iceland
- Average wind speed in September: 17km/h
The windiest month (with the highest average wind speed) is December (22km/h).
The calmest month (with the lowest average wind speed) is July (13.9km/h).
Average humidity in September
Hólmavík, Iceland
- Average humidity in September: 82%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are May and June (75%).
Average rainfall in September
Hólmavík, Iceland
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is September (36mm).
The driest month (with the least rainfall) is June (15mm).
Average rainfall days in September
Hólmavík, Iceland
- Average rainfall days in September: 13.3 days
The months with the highest number of rainy days are August and September (13.3 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in September
Hólmavík, Iceland
- Average snowfall in September: 22mm
The month with the highest snowfall is January (106mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Hólmavík, Iceland
- Average snowfall days in September: 1.6 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are July and August (0.1 days).
Average daylight in September /
Average sunshine in September
Hólmavík, Iceland
- Average daylight in September: 13h and 1min
The month with the longest days is June (Average daylight: 22h and 48min).
The month with the shortest days is December (Average daylight: 3h and 24min).
- Average sunshine in September: 5h and 1min
The month with the most sunshine is May (Average sunshine: 8h and 0min).
The month with the least sunshine is June (Average sunshine: 0h and 42min).
Average sunshine days in September
Hólmavík, Iceland
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is June (15.8 days).
The month with the least sunshine days is April (11.8 days).
Average UV index in September
Hólmavík, Iceland
- Average UV index in September: 2
The months with the highest UV index are May, June and July (UV index 3).
The months with the lowest UV index are March, October, November and December (UV index 1).
Average cloud cover in September
Hólmavík, Iceland
- Average cloud cover in September: 62
The month with the most cloud cover is March (Cloud cover 67).
The month with the least cloud cover is June (Cloud cover 55).
Average visibility in September
Hólmavík, Iceland
- 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).
Hólmavík, Iceland
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