FinlandAverage weather for Helsinki in August
It's pleasantly warm in August in Helsinki with an average temperature of 21°C. Temperatures this month range from a low of 18°C to a high of 23°C. At night, you can expect temperatures between 12°C and 16°C.
Start of August
The month of August starts in Helsinki with warm temps, averaging around 23°C during the day and nights around 16°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month.
Mid August
By mid-August, daytime temps drop to around 21°C, with nights around 15°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of August
By the end of August, the average daytime temperature in Helsinki is around 19°C, while nighttime temps are about 13°C. There’s a significant chance of many days with precipitation.
In August, there is an average of 138 mm of precipitation, spread over 10 days. The wind speed is around 4 Bft, mostly coming from the South.
Helsinki in August |
New York | ||
|---|---|---|---|
 Average temperature |
21°C | 30°C | |
 Max. temperature |
23°C | 31°C | |
| Min. temperature |
18°C | -5°C | |
 Total precipitation |
138 mm | 79 mm | |
| Rainy days |
10 days | 13 days | |
July
UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Is August a good time to visit Helsinki?
Looking for sun? August isn’t a good month to be in Helsinki. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 30°C in 2023, Helsinki reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 10°C in 2021. The extreme nighttime temperatures ranged from a lowest recorded value of 5°C to a highest value of 23°C.
Check out the climate of Helsinki for all months and discover the best travel time
Curious about the weather in other parts of Finland? Check out the climate and weather for spots like Rovaniemi, Kuusamo, Tampere, or explore other destinations in Finland.
Daily Temperature in August in Helsinki
This chart shows the average daily high and low temperatures in August for Helsinki, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in August in Helsinki
The chart below shows the average daily precipitation in August for Helsinki, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for August, you can expect about 10 days of precipitation in Helsinki.
Daily UV index in August in Helsinki
This chart shows the average daily UV index in August in Helsinki, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in August in Helsinki over the years
This chart shows the average temperature in August in Helsinki, measured in degrees Celsius, over the past few years.
Total precipitation in August in Helsinki over the years
This chart shows the average precipitation in August in Helsinki, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in August for Helsinki
Click on any day in August to get detailed info about the usual weather on that day in Helsinki. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in August in Helsinki
Have you been to Helsinki in August?
Share your weather experience in August in Helsinki.
Average weather in Helsinki by month
Click on a month below to see detailed weather info for Helsinki. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
