Helsinki in October usually sees fair weather conditions, with an average daily high temperature of +48°F and roughly 4 sunny days. However, you should prepare for about 17 rainy days with an average precipitation of 83 mm. The weather is changeable so pack for every eventuality. Search flightsin one click on Avionero.
Average weather
☀️
+48°F
Avg. max. temperature
+18°F
Min.
+64°F
Max.
83 mm
Total precipitation
84%
Avg. humidity
4 m/s
Avg. wind
4 ☀️
Sunny Days
8 ⛅️
Cloudy
17 🌦
Rainy
Our opinion: Helsinki has OK weather in October.
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Average temperature in Helsinki in October
Here are the expected maximum, average and minimum temperatures in Helsinki for October based on the historical data.
Last Year
Historical Data
The temperature in October is +45°F on average, with a range between a maximum of +59°F during the day and a minimum of +28°F at night.
The average maximum temperature goes down 53% by the end of the month, compared with the beginning of the month, from +59°F to +43°F.
Is Helsinki warm or cold in October?
Helsinki is typically chill in October.
Maximum temperatures go down compared to the previous month from +57°F to +48°F. The minimum temperature also goes down from +48°F to +39°F.
Pack a jumper and a jacket as there will be cooler temperatures.
Take a look at how October is compared to other months in Helsinki:
Water temperature in Helsinki in October
Water in Helsinki in October is Cold. It varies from +33°F to +55°F, with an average of +44°F.This is almost similar to the air temperature, which averages +48°F.
In October, water temperatures are average relative to the rest of the year:
The warmest water temperatures in Helsinki are reached in August, when the average sea temperature rises to +55°F. The coldest water temperatures are in February, with an average of +31°F.
Can you swim in Helsinki in October?
We would not recommend swimming in Helsinki in October, the water is very cold (+44°F on average). Consider swimming only if you are an experienced cold-water swimmer with proper gear.
🦭
Cold
Below +61°F
🏄♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°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 Helsinki in October
Helsinki weather looks like this, on average, in October and the surrounding months.
September
October
November
Avg. temperature
+57°F
+48°F
+39°F
Min. temperature
+32°F
+18°F
+1°F
Max. temperature
+72°F
+64°F
+55°F
Rainfall
78 mm
83 mm
55 mm
Wind
4 m/s
4 m/s
4 m/s
Avg. water temperature
+51°F
+44°F
+39°F
Humidity
81%
84%
87%
Air pressure
1011 HPa
1011 HPa
1010 HPa
Sunny days
5
4
2
Cloudy days
8
8
8
Rainy days
16
17
12
Snowy days
0
2
8
October weather is still as ok as in September.It’s getting colder in October. From +57°F in the day, the average maximum temperature lowers to +48°F.Prepare for more rain. Average rainfall goes from 78 mm to 83 mm.Humidity rises from 81% to 84%.The average wind speed doesn’t change much during October, staying around 4 m/s.The days becoming less sunny, going from 5 sunny days in September to 4 in October.
Next month (November) brings a further decline in the weather.
Wind speed in Helsinki in October based on historical data.
Last Year
Historical Data
The average wind speed is 6 m/s getting up to 14 m/s which is quite strong. The wind will cause branches to move and ground debris to fly around.
The average wind speed in Helsinki is gradually decreasing during October, going from 9 m/s to 8 m/s over the course of the month.
Rain
Amount of rainfall in mm during October in Helsinki based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in October stands at 61%, leading to total precipitation of around 196 mm. The maximum amount of rainfall per day is around 29 mm, which is moderate rain.October is a pretty wet month with over 19 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
October is one of the rainiest months in Helsinki, here is a comparison with other months, total mm:
Helsinki wettest month is October, where a typical day has a 55% chance of precipitation and 83 mm of rainfall per day. February, on the other hand, is the driest month with a mere 3% chance of precipitation and 10 mm of rainfall per day.
Snow
Amount of snow in mm during October in Helsinki based on historical data.
Last Year
Historical Data
The chance of snow on a typical day in October is 0%, for a monthly total of around 2 mm.
Here’s how October is compared with other months in the amount of snow, total mm:
How was the weather last October in Helsinki?
This is the weather in Helsinki in October 2023:
1 October
☁️
+59°F
2 October
☀️
+58°F
3 October
☀️
+57°F
4 October
🌧️
+56°F
5 October
☀️
+53°F
6 October
☀️
+51°F
7 October
🌧️
+53°F
8 October
☀️
+43°F
9 October
☀️
+44°F
10 October
☀️
+50°F
11 October
🌧️
+56°F
12 October
☀️
+49°F
13 October
☀️
+53°F
14 October
🌧️
+55°F
15 October
🌧️
+49°F
16 October
☀️
+46°F
17 October
☀️
+46°F
18 October
☁️
+36°F
19 October
☁️
+38°F
20 October
☀️
+39°F
21 October
☀️
+40°F
22 October
🌫️
+41°F
23 October
☁️
+39°F
24 October
☁️
+36°F
25 October
☁️
+35°F
26 October
☁️
+38°F
27 October
☁️
+37°F
28 October
☁️
+32°F
29 October
☁️
+33°F
30 October
☁️
+37°F
31 October
🌧️
+43°F
In October 2023 Helsinki had 13 sunny days, 11 cloudy days, and 6 rainy days. The average maximum temperature was +45°F, with an absolute maximum of +59°F and a minimum of +32°F. The average humidity was 85%, with a maximum of 100% and a minimum of 60%. The average wind speed was 6 m/s, with a maximum of 20 m/s and a minimum of 0 m/s.
Are you planning a trip in October?
Climate Change Over the Years
This is how Helsinki climate has changed over the last 43 years.
The climate in Helsinki in October has not changed that much over the last 43 years.
The average temperature was the lowest in 1987 (+41°F) and the highest in 2020 (+52°F). The driest year was 2002 with only 248 mm of rainfall, and the wettest year was 2020 with 1153 mm.
FAQ
Frequently asked questions about the weather in Helsinki in October:
Is October a good time to visit Helsinki?
It’s always a good time to visit Helsinki, but the weather is changeable in October, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Helsinki in October?
Not really, October is not the best time to sunbathe, unless you visit a local solarium.
Can you swim in Helsinki in October?
Swimming in Helsinki in October is challenging and not recommended for inexperienced swimmers or without proper equipment and preparation.
Is Helsinki rainy in October?
Helsinki is often rainy in October. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Helsinki in October?
Usually, it’s not very sunny in Helsinki in October, 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.
For this page, we’ve looked at the typical weather in Helsinki, 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.
