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Tromso in September: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Tromso in September will be like? Take a look at our weather guide for Tromso, based on historical data.
Check flight prices to Tromso on Avionero:
September

Weather in Tromso in September 2024

OK Weather
Mild
🌧️
Rainy
September could be a good time to visit Tromso, as the weather is generally fine. The average high temperature is around +54°F, and there are typically 3 sunny days in September. However, expect about 14 rainy days, and total monthly rainfall of approximately 126 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+54°F
Avg. max. temperature
+23°F
Min.
+70°F
Max.
126 mm
Total precipitation
80%
Avg. humidity
2 m/s
Avg. wind
3 ☀️
Sunny Days
13 ⛅️
Cloudy
14 🌦
Rainy
Our opinion: Tromso has OK weather in September.

Average temperature in Tromso in September

Here are the expected maximum, average and minimum temperatures in Tromso for September based on the historical data.
Last Year
Historical Data

The temperature in September is +54°F on average, with a range between a maximum of +59°F during the day and a minimum of +37°F at night.

The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +52°F to +52°F.

Is Tromso warm or cold in September?

Tromso is typically mild in September.

Maximum temperatures go down compared to the previous month from +61°F to +54°F. The minimum temperature also goes down from +48°F to +43°F.

Pack a light jacket as it will be warm in the day and cool in the evenings.

Take a look at how September is compared to other months in Tromso:

Climate in Tromso in September

Tromso weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+61°F+54°F+43°F
Min. temperature
+36°F+23°F-6°F
Max. temperature
+84°F+70°F+63°F
Rainfall
110 mm126 mm126 mm
Wind
2 m/s2 m/s3 m/s
Humidity
79%80%80%
Air pressure
1009 HPa1007 HPa1005 HPa
Sunny days
333
Cloudy days
161314
Rainy days
121412
Snowy days
002

September weather is still as ok as in August. It’s getting colder in September. From +61°F in the day, the average maximum temperature lowers to +54°F. Prepare for more rain. Average rainfall goes from 110 mm to 126 mm. Humidity rises from 79% to 80%. The average wind speed doesn’t change much during September, staying around 2 m/s. The amount of sunny days stay about the same, averaging 3 sunny days during the month.

October brings much the same weather, it remains ok.

Wind

Wind speed in Tromso 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 Tromso is gradually decreasing during September, going from 4 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Tromso based on historical data.
Last Year
Historical Data
Typically, there is a 50% chance of rain on an average day in September, with total rainfall of approximately 52 mm. The maximum amount of rainfall per day is around 12 mm, which is considered light rain. September is a pretty wet month with over 15 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
September is one of the rainiest months in Tromso, here is a comparison with other months, total mm:
Tromso wettest month is October, where a typical day has a 39% chance of precipitation and 126 mm of rainfall per day. February, on the other hand, is the driest month with a mere 10% chance of precipitation and 46 mm of rainfall per day.

How was the weather last September in Tromso?

This is the weather in Tromso in September 2023:
1 September
☁️
+52°F
2 September
☁️
+53°F
3 September
☁️
+52°F
4 September
☁️
+56°F
5 September
🌧️
+53°F
6 September
☁️
+52°F
7 September
☁️
+52°F
8 September
☀️
+56°F
9 September
☁️
+52°F
10 September
☁️
+53°F
11 September
🌧️
+52°F
12 September
☁️
+51°F
13 September
☁️
+53°F
14 September
🌧️
+49°F
15 September
☁️
+53°F
16 September
🌧️
+54°F
17 September
☁️
+53°F
18 September
☁️
+52°F
19 September
☁️
+50°F
20 September
☁️
+48°F
21 September
🌧️
+51°F
22 September
☀️
+59°F
23 September
☁️
+56°F
24 September
☁️
+53°F
25 September
☀️
+59°F
26 September
☀️
+54°F
27 September
☀️
+58°F
28 September
☀️
+54°F
29 September
☁️
+55°F
30 September
☀️
+51°F
In September 2023 Tromso had 7 sunny days, 18 cloudy days, and 5 rainy days. The average maximum temperature was +54°F, with an absolute maximum of +59°F and a minimum of +48°F. The average humidity was 77%, with a maximum of 100% and a minimum of 49%. The average wind speed was 4 m/s, with a maximum of 10 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

This is how Tromso climate has changed over the last 43 years.

The climate in Tromso in September has not changed that much over the last 43 years.

The average temperature was the lowest in 2007 (+51°F) and the highest in 2001 (+63°F). The driest year was 2017 with only 19 mm of rainfall, and the wettest year was 2009 with 265 mm.

FAQ

Frequently asked questions about the weather in Tromso in September:

Is September a good time to visit Tromso?

It’s always a good time to visit Tromso, 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 Tromso in September?

September has mild temperatures in Tromso. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Is Tromso rainy in September?

Tromso 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 Tromso in September?

Usually, it’s not very sunny in Tromso in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Norway

Check out the weather for other cities in Norway.

Monthly weather in Tromso

Source of the data

For this page, we’ve looked at the typical weather in Tromso, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

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.