If you plan to visit Alesund in September, the weather is typically alright, with an average high temperature of +15°C during the day and approximately 2 sunny days. Expect some rainy, though, as there are typically 23 rainy days in the month and around 230 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flightsin one click on Avionero.
Average weather
☀️
+15°C
Avg. max. temperature
+2°C
Min.
+24°C
Max.
230 mm
Total precipitation
78%
Avg. humidity
3 m/s
Avg. wind
2 ☀️
Sunny Days
5 ⛅️
Cloudy
23 🌦
Rainy
Our opinion: Alesund has OK weather in September.
Average temperature in Alesund in September
Here are the expected maximum, average and minimum temperatures in Alesund for September based on the historical data.
Last Year
Historical Data
Going from a maximum of +22°C during the day to a minimum of +8°C during the night, the temperature in September averages around +16°C.
The average maximum temperature goes down 14% by the end of the month, compared with the beginning of the month, from +15°C to +13°C.
Is Alesund warm or cold in September?
Alesund is typically mild in September.
Maximum temperatures go down compared to the previous month from +17°C to +15°C. The minimum temperature also goes down from +12°C to +10°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
September is one of the warmest months in Alesund, here is the comparison with other months:
Water temperature in Alesund in September
Water in Alesund in September is Cold. It varies from +11°C to +16°C, with an average of +14°C.This is almost similar to the air temperature, which averages +15°C.
The water temperature in September is one of the warmest of the entire year:
The warmest water temperatures in Alesund are reached in August, when the average sea temperature rises to +14°C. The coldest water temperatures are in March, with an average of +5°C.
Can you swim in Alesund in September?
We would not recommend swimming in Alesund in September, the water is very cold (+14°C on average). Consider swimming only if you are an experienced cold-water swimmer with proper gear.
🦭
Cold
Below +16°C
🏄♂️
Fresh
16°C - 21°C
🏊
Comfortable
21°C - 25°C
👙
Warm
25°C - 28°C
🔥
Very warm
+28°C and up
You will need a full-body wetsuit, cap, gloves, a warm change of clothes, and a hot drink ready for after your swim.
Climate in Alesund in September
Alesund weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+17°C
+15°C
+11°C
Min. temperature
+5°C
+2°C
-4°C
Max. temperature
+28°C
+24°C
+22°C
Rainfall
167 mm
230 mm
226 mm
Wind
3 m/s
3 m/s
4 m/s
Avg. water temperature
+14°C
+14°C
+11°C
Humidity
81%
78%
76%
Air pressure
1010 HPa
1010 HPa
1007 HPa
Sunny days
2
2
2
Cloudy days
7
5
6
Rainy days
23
23
22
Snowy days
0
0
1
September weather is still as ok as in August.It’s getting colder in September. From +17°C in the day, the average maximum temperature lowers to +15°C.Prepare for more rain. Average rainfall goes from 167 mm to 230 mm.It feels drier, as humidity decreases from 81% to 78%.The average wind speed doesn’t change much during September, staying around 3 m/s.The amount of sunny days stay about the same, averaging 2 sunny days during the month.
October brings much the same weather, it remains ok.
Wind speed in Alesund in September based on historical data.
Last Year
Historical Data
The average wind speed is 4 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Alesund is gradually increasing during September, going from 3 m/s to 5 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in Alesund based on historical data.
Last Year
Historical Data
Typically, there is a 87% chance of rain on an average day in September, with total rainfall of approximately 256 mm. The maximum amount of rainfall per day is around 30 mm, which is moderate rain.September is a pretty wet month with over 26 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
September is one of the rainiest months in Alesund, here is a comparison with other months, total mm:
Alesund wettest month is September, where a typical day has a 77% chance of precipitation and 230 mm of rainfall per day. April, on the other hand, is the driest month with a mere 53% chance of precipitation and 108 mm of rainfall per day.
How was the weather last September in Alesund?
This is the weather in Alesund in September 2023:
1 September
☁️
+15°C
2 September
☁️
+14°C
3 September
🌧️
+15°C
4 September
🌧️
+17°C
5 September
☁️
+14°C
6 September
☀️
+16°C
7 September
☁️
+19°C
8 September
☀️
+22°C
9 September
☀️
+22°C
10 September
🌧️
+17°C
11 September
🌧️
+17°C
12 September
🌧️
+14°C
13 September
🌧️
+11°C
14 September
☀️
+13°C
15 September
☁️
+15°C
16 September
🌧️
+12°C
17 September
☀️
+14°C
18 September
☀️
+18°C
19 September
🌧️
+15°C
20 September
🌧️
+14°C
21 September
🌧️
+15°C
22 September
🌧️
+16°C
23 September
🌧️
+14°C
24 September
🌧️
+14°C
25 September
🌧️
+18°C
26 September
☀️
+17°C
27 September
🌧️
+15°C
28 September
🌧️
+17°C
29 September
☁️
+15°C
30 September
🌧️
+13°C
In September 2023 Alesund had 7 sunny days, 6 cloudy days, and 17 rainy days. The average maximum temperature was +16°C, with an absolute maximum of +22°C and a minimum of +11°C. The average humidity was 83%, with a maximum of 100% and a minimum of 57%. The average wind speed was 4 m/s, with a maximum of 14 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change over Years
This is how Alesund climate have been changing during last 43 years period.
The climate in Alesund in September has not changed much over the last 43 years.
The average temperature was the lowest in 2010 (+9°C) and the highest in 2014 (+12°C). The driest year was 1996 with only 1292 mm of rainfall, and the wettest year was 2011 with 2856 mm.
FAQ
Frequently asked questions about the weather in Alesund in September:
Is September a good time to visit Alesund?
It’s always a good time to visit Alesund, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Alesund in September?
September has mild temperatures in Alesund. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Can you swim in Alesund in September?
Swimming in Alesund in September is challenging and not recommended for inexperienced swimmers or without proper equipment and preparation.
Is Alesund rainy in September?
Alesund is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Alesund in September?
Usually, it’s not very sunny in Alesund in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in Alesund, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
