Alta Weather in September
Alta in September averages 11°C (52°F) during the day and 4°C (39°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Alta in September
Based on our climate data of the past 30 years, about 18 days of rain are anticipated, with 68 mm (2.7 in) on average. This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.
Temperature in Alta in September
In September, expect low temperatures in Alta, with highs of 11°C (52°F) and lows of 4°C (39°F) at night. It stays cool throughout the day, so warm layers are a good idea from morning to evening. With lows around 4°C (39°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.For Alta itself, July and August generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Norway, check out our Alta's climate page.
Alta Temperature in September
Min Temperature
4°C (39°F)
Max Temperature
11°C (52°F)
Chance of Rain
61%
Precipitation
68 mm (2.7 in)
Rainy days
18 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Alta typically drop from around 13°C (55°F) at the start of September to approximately 8°C (46°F) by the end. Nights are cold, with lows typically ranging from 3°C (37°F) to 8°C (46°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Alta in September
Browse day-by-day weather records for Alta spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Alta historical weather extremes in September
Based on 49 years of weather observations in Alta between 1976 and 2025, these are the recorded extremes.
- Alta recorded its highest September temperature of 24°C (75°F) on September 5, 2025.
- On September 26, 1976, Alta saw its coldest September day with temperatures maxing out at 0°C (32°F).
- Alta registered its coldest September night on September 27, 1986, with temperatures dropping to -6°C (21°F).
Best Places in Norway in September
Find out more about the weather in Norway and which places have the best travel conditions in this month. See all of Norway in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Alta in September
The weather can be unpredictable in September, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Rain is likely on several days, so bring a good rain jacket.What To Do in Alta in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Norway, check out our Alta's climate page.
See the full Alta climate overview or explore weather in Norway.
