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Kokkola in September: Weather, Average temperature and Climate

Take a look at past year’s weather for Kokkola in September and see if it is worth visiting.
Check flight prices to Kokkola on Avionero:
September

Weather in Kokkola in September 2025

OK Weather
Mild
🌧️
Rainy
Kokkola in September usually sees fair weather conditions, with an average daily high temperature of +55°F and roughly 4 sunny days. However, you should prepare for about 16 rainy days with an average precipitation of 56 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+55°F
Avg. max. temperature
+28°F
Min.
+73°F
Max.
56 mm
Total precipitation
83%
Avg. humidity
3 m/s
Avg. wind
4 ☀️
Sunny Days
10 ⛅️
Cloudy
16 🌦
Rainy
Our opinion: Kokkola has OK weather in September.

Average temperature in Kokkola in September

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

The temperature in September is +63°F on average, with a range between a maximum of +73°F during the day and a minimum of +34°F at night.

The average maximum temperature goes down 14% by the end of the month, compared with the beginning of the month, from +63°F to +57°F.

Is Kokkola warm or cold in September?

Kokkola is typically mild in September.

Maximum temperatures go down compared to the previous month from +64°F to +55°F. The minimum temperature also goes down from +52°F to +45°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 Kokkola:

Climate in Kokkola in September

Kokkola weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+64°F+55°F+45°F
Min. temperature
+34°F+28°F+3°F
Max. temperature
+88°F+73°F+68°F
Rainfall
77 mm56 mm44 mm
Wind
3 m/s3 m/s4 m/s
Humidity
79%83%87%
Air pressure
1010 HPa1010 HPa1009 HPa
Sunny days
543
Cloudy days
71013
Rainy days
181612
Snowy days
004

September weather is still as ok as in August. It’s getting colder in September. From +64°F in the day, the average maximum temperature lowers to +55°F. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 77 mm to 56 mm. Humidity rises from 79% to 83%. The average wind speed doesn’t change much during September, staying around 3 m/s. The days becoming less sunny, going from 5 sunny days in August to 4 in September.

Next month (October) brings a further decline in the weather.

Wind

Wind speed in Kokkola in September based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Kokkola is gradually increasing during September, going from 1 m/s to 3 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Kokkola based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in September stands at 60%, leading to total precipitation of around 79 mm. The maximum amount of rainfall per day is around 9 mm, which is considered light rain. September is a pretty wet month with over 18 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
September is one of the rainiest months in Kokkola, here is a comparison with other months, total mm:
Kokkola wettest month is August, where a typical day has a 58% chance of precipitation and 77 mm of rainfall per day. February, on the other hand, is the driest month with a mere 3% chance of precipitation and 2 mm of rainfall per day.

How was the weather last September in Kokkola?

This is the weather in Kokkola in September 2023:
1 September
☁️
+62°F
2 September
🌧️
+67°F
3 September
🌧️
+63°F
4 September
☀️
+63°F
5 September
☀️
+61°F
6 September
☀️
+60°F
7 September
☀️
+67°F
8 September
☀️
+68°F
9 September
☀️
+74°F
10 September
☁️
+64°F
11 September
☁️
+68°F
12 September
☁️
+69°F
13 September
☀️
+60°F
14 September
☀️
+57°F
15 September
☀️
+56°F
16 September
🌧️
+59°F
17 September
☀️
+53°F
18 September
☀️
+58°F
19 September
☀️
+60°F
20 September
☁️
+53°F
21 September
🌧️
+63°F
22 September
☀️
+73°F
23 September
☁️
+65°F
24 September
☀️
+59°F
25 September
☀️
+58°F
26 September
☁️
+62°F
27 September
☁️
+59°F
28 September
☀️
+60°F
29 September
☁️
+60°F
30 September
🌧️
+57°F
In September 2023 Kokkola had 16 sunny days, 9 cloudy days, and 5 rainy days. The average maximum temperature was +63°F, with an absolute maximum of +73°F and a minimum of +54°F. The average humidity was 88%, with a maximum of 100% and a minimum of 57%. The average wind speed was 3 m/s, with a maximum of 9 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

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

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

The average temperature was the lowest in 1985 (+39°F) and the highest in 2020 (+49°F). The driest year was 2002 with only 256 mm of rainfall, and the wettest year was 2016 with 617 mm.

FAQ

Frequently asked questions about the weather in Kokkola in September:

Is September a good time to visit Kokkola?

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

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

Is Kokkola rainy in September?

Kokkola 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 Kokkola in September?

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

Other cities in Finland

Check out the weather for other cities in Finland.

Monthly weather in Kokkola

Source of the data

For this page, we’ve looked at the typical weather in Kokkola, 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.