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 start of September signals a gentle decrease in the average high-temperature, transitioning from an enjoyable 16.7°C (62.1°F) in August to a fresh 12.6°C (54.7°F). Namsos temperatures generally rest at a low of 7.4°C (45.3°F) during the September nights.Humidity
In September, the average relative humidity is 82%.Rainfall
The month with the most rainfall in Namsos, Norway, is September, when the rain falls for 14.5 days and typically aggregates up to 56mm (2.2") of precipitation.Snowfall
In Namsos, snow does not fall in June through September.Sea temperature
In Namsos, in September, the average water temperature is 12.9°C (55.2°F).Note: Danger awaits those who swim in 12.9°C (55.2°F) without protection. Falling below 10°C (50°F) means intense cold shock and hyperventilation.
Daylight
In September, the average length of the day is 13h and 2min.On the first day of September, sunrise is at 05:57 and sunset at 20:30. On the last day of the month, sunrise is at 07:21 and sunset at 18:45 CEST.
Sunshine
In September, the average sunshine in Namsos is 6h.UV index
In Namsos, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 3 suggests this advice:
Act with care - Obligation to protect against skin and eye damage is highlighted. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
What is the usual temperature for Namsos in September?
What is the average humidity in September in Namsos?
What is the rainiest month in Namsos?
How many days does it rain in September in Namsos?
When it does not snow in Namsos?
Does it snow in Namsos in September?
What is the sea water temperature in September in Namsos?
How many hours of daylight does Namsos have in September?
When is the sunrise / sunset in September in Namsos?
How long on average sun shines in September in Namsos?
What is the UV index intensity in September in Namsos?
Average temperature in September
Namsos, Norway
- Average high temperature in September: 12.6°C
The warmest month (with the highest average high temperature) is July (17.3°C).
The month with the lowest average high temperature is January (-1.8°C).
- Average low temperature in September: 7.4°C
The month with the highest average low temperature is July (10.1°C).
The coldest month (with the lowest average low temperature) is February (-5.8°C).
Average pressure in September
Namsos, Norway
- Average pressure in September: 1010.2mbar
The month with the highest atmospheric pressure is May (1014.4mbar).
The month with the lowest atmospheric pressure is December (1002.9mbar).
Average wind speed in September
Namsos, Norway
- Average wind speed in September: 13.2km/h
The windiest month (with the highest average wind speed) is January (16.8km/h).
The calmest month (with the lowest average wind speed) is July (10.1km/h).
Average humidity in September
Namsos, Norway
- Average humidity in September: 82%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is May (74%).
Average rainfall in September
Namsos, Norway
- Average rainfall in September: 56mm
The wettest month (with the highest rainfall) is September (56mm).
The driest month (with the least rainfall) is June (26mm).
Average rainfall days in September
Namsos, Norway
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is October (15.7 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in September
Namsos, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is February (138mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Namsos, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Namsos, Norway
- Average sea temperature in September: 12.9°C
The best month for swimming (with the highest average sea temperature) is August (14.2°C).
The coldest month (with the lowest average sea temperature) is March (4.8°C).
Average daylight in September /
Average sunshine in September
Namsos, Norway
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 21h and 6min).
The month with the shortest days is December (Average daylight: 4h and 12min).
- Average sunshine in September: 6h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 1h and 18min).
Average sunshine days in September
Namsos, Norway
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is April (11.9 days).
Average UV index in September
Namsos, Norway
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are February, March and December (UV index 1).
Average cloud cover in September
Namsos, Norway
- Average cloud cover in September: 59
The month with the most cloud cover is March (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 54).
Average visibility in September
Namsos, Norway
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February and March (8km).
Namsos, Norway
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