Weather in Alesund in September 2025
Average weather
Average temperature in Alesund in September
The temperature in September is +61°F on average, with a range between a maximum of +72°F during the day and a minimum of +46°F at night.
The average maximum temperature goes down 14% by the end of the month, compared with the beginning of the month, from +59°F to +55°F.
Is Alesund warm or cold in September?
Alesund is typically mild in September.
Maximum temperatures go down compared to the previous month from +63°F to +59°F. The minimum temperature also goes down from +54°F to +50°F.
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 +51°F to +61°F, with an average of +56°F. This is almost similar to the air temperature, which averages +59°F.
The water temperature in September is one of the warmest of the entire year:
Can you swim in Alesund in September?
Climate in Alesund in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +63°F | +59°F | +52°F | ||||
| Min. temperature | ||||||
| +41°F | +36°F | +25°F | ||||
| Max. temperature | ||||||
| +82°F | +75°F | +72°F | ||||
| Rainfall | ||||||
| 167 mm | 230 mm | 226 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 4 m/s | ||||
| Avg. water temperature | ||||||
| +57°F | +56°F | +53°F | ||||
| 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 +63°F in the day, the average maximum temperature lowers to +59°F. 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
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
How was the weather last September in Alesund?
Climate Change Over the Years
The climate in Alesund in September has not changed that much over the last 43 years.
The average temperature was the lowest in 2010 (+48°F) and the highest in 2014 (+53°F). The driest year was 1996 with only 1292 mm of rainfall, and the wettest year was 2011 with 2856 mm.
FAQ
Is September a good time to visit Alesund?
Can you sunbathe in Alesund in September?
Can you swim in Alesund in September?
Is Alesund rainy in September?
Is it sunny in Alesund in September?
Other cities in Norway
Monthly weather in Alesund
Source of the data
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.