Helsinki September Weather Averages

Southern Finland, Finland

September Weather Averages for Helsinki

High Temp15°C60°F
Low Temp11°C51°F
Avg Temp13°C55°F
Sunshine Hours148 hours 
Rainfall71.02 mm2.80 In
Rain days8 days 
Pressure1014 mb30 In

 

Helsinki September Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
200916°C / 62°F11°C / 52°F14°C / 57°F177 hours26.90 mm / 1.06 In2 days1013 mb / 30 In
201014°C / 58°F10°C / 50°F12°C / 54°F145 hours68.06 mm / 2.68 In9 days1014 mb / 30 In
201116°C / 61°F12°C / 54°F14°C / 57°F104 hours96.94 mm / 3.82 In14 days1008 mb / 30 In
201214°C / 58°F11°C / 51°F13°C / 55°F88 hours145.48 mm / 5.73 In14 days1008 mb / 30 In
201315°C / 59°F11°C / 52°F13°C / 55°F145 hours42.90 mm / 1.69 In7 days1013 mb / 30 In
201416°C / 61°F11°C / 52°F14°C / 57°F253 hours40.30 mm / 1.59 In3 days1018 mb / 31 In
201515°C / 59°F12°C / 53°F13°C / 56°F127 hours64.50 mm / 2.54 In9 days1019 mb / 31 In
201616°C / 60°F11°C / 52°F13°C / 56°F188 hours36.88 mm / 1.45 In3 days1016 mb / 30 In
201714°C / 57°F10°C / 51°F12°C / 54°F163 hours82.57 mm / 3.25 In7 days1018 mb / 31 In
201817°C / 62°F12°C / 54°F14°C / 58°F145 hours117.53 mm / 4.63 In12 days1012 mb / 30 In
201914°C / 57°F10°C / 50°F12°C / 54°F119 hours81.92 mm / 3.23 In16 days1011 mb / 30 In
202016°C / 60°F11°C / 52°F13°C / 56°F109 hours55.90 mm / 2.20 In9 days1012 mb / 30 In
202113°C / 56°F8°C / 46°F10°C / 50°F131 hours27.00 mm / 1.06 In3 days1018 mb / 31 In
202213°C / 56°F8°C / 46°F10°C / 51°F110 hours44.80 mm / 1.76 In6 days1013 mb / 30 In
202318°C / 64°F12°C / 54°F15°C / 59°F151 hours75.29 mm / 2.96 In7 days1016 mb / 30 In
202418°C / 64°F12°C / 54°F15°C / 59°F191 hours109.42 mm / 4.31 In3 days1018 mb / 31 In
202517°C / 62°F12°C / 53°F14°C / 57°F174 hours53.80 mm / 2.12 In3 days1019 mb / 31 In
202616°C / 61°F10°C / 51°F13°C / 55°F142 hours108.20 mm / 4.26 In17 days1011 mb / 30 In

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Weather history near Helsinki

Region

Southern Finland

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Helsinki weather history: common questions

How far back does Helsinki weather history go?

Hourly historical weather is available from 1 January 2009. Choose a date above, or pick a month at the top of the page for long-term averages.

Can I download Helsinki historical weather as a file?

Yes. Buy historical weather data as daily or hourly CSV, yearly monthly averages or monthly climate averages. A free sample download is available.

Is there an API for historical weather?

Yes. The WeatherAPI.com History API returns hourly weather for any past date from 2010, as JSON or XML. Get a free API key.

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