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Helsinki Climate Guide
Elev: 0m   Long: 024°56'E   Lat: 60°10'N
J F M A M J J A S O N D
Maximum Daytime Temperature (°C) -4 °C (25°F) Maximum Daytime Temperature in January -4 °C (25°F) Maximum Daytime Temperature in February 1 °C (34°F) Maximum Daytime Temperature in March 7 °C (45°F) Maximum Daytime Temperature in April 15 °C (59°F) Maximum Daytime Temperature in May 20 °C (68°F) Maximum Daytime Temperature in June 21 °C (70°F) Maximum Daytime Temperature in July 20 °C (68°F) Maximum Daytime Temperature in August 14 °C (57°F) Maximum Daytime Temperature in September 9 °C (48°F) Maximum Daytime Temperature in October 3 °C (37°F) Maximum Daytime Temperature in November -1 °C (30°F) Maximum Daytime Temperature in December
Minimum Night-time Temperature (°C) -10 °C (14°F) Minimum Night-time Temperature in January -10 °C (14°F) Minimum Night-time Temperature in February -6 °C (21°F) Minimum Night-time Temperature in March -1 °C (30°F) Minimum Night-time Temperature in April 5 °C (41°F) Minimum Night-time Temperature in May 10 °C (50°F) Minimum Night-time Temperature in June 12 °C (54°F) Minimum Night-time Temperature in July 11 °C (52°F) Minimum Night-time Temperature in August 7 °C (45°F) Minimum Night-time Temperature in September 3 °C (37°F) Minimum Night-time Temperature in October -2 °C (28°F) Minimum Night-time Temperature in November -7 °C (19°F) Minimum Night-time Temperature in December
Hours of Sunshine 1 Hour of Sunshine per day (13% of Daylight Hours) in January 2 Hours of Sunshine per day (22% of Daylight Hours) in February 4 Hours of Sunshine per day (32% of Daylight Hours) in March 6 Hours of Sunshine per day (38% of Daylight Hours) in April 8 Hours of Sunshine per day (49% of Daylight Hours) in May 9 Hours of Sunshine per day (50% of Daylight Hours) in June 8 Hours of Sunshine per day (47% of Daylight Hours) in July 7 Hours of Sunshine per day (43% of Daylight Hours) in August 4 Hours of Sunshine per day (33% of Daylight Hours) in September 3 Hours of Sunshine per day (26% of Daylight Hours) in October 1 Hour of Sunshine per day (14% of Daylight Hours) in November 1 Hour of Sunshine per day (12% of Daylight Hours) in December
Hours of Daylight 7 Hours of Daylight in January 9 Hours of Daylight in February 12 Hours of Daylight in March 15 Hours of Daylight in April 17 Hours of Daylight in May 19 Hours of Daylight in June 18 Hours of Daylight in July 16 Hours of Daylight in August 13 Hours of Daylight in September 10 Hours of Daylight in October 7 Hours of Daylight in November 6 Hours of Daylight in December
Days with some Rain 20 Days with some Rain in January 16 Days with some Rain in February 16 Days with some Rain in March 13 Days with some Rain in April 11 Days with some Rain in May 11 Days with some Rain in June 14 Days with some Rain in July 16 Days with some Rain in August 18 Days with some Rain in September 18 Days with some Rain in October 21 Days with some Rain in November 21 Days with some Rain in December
Monthly Rainfall (mm) 43 mm (1.7 inches) Monthly Rainfall in January 33 mm (1.3 inches) Monthly Rainfall in February 35 mm (1.4 inches) Monthly Rainfall in March 37 mm (1.5 inches) Monthly Rainfall in April 33 mm (1.3 inches) Monthly Rainfall in May 42 mm (1.7 inches) Monthly Rainfall in June 67 mm (2.6 inches) Monthly Rainfall in July 77 mm (3.0 inches) Monthly Rainfall in August 73 mm (2.9 inches) Monthly Rainfall in September 72 mm (2.8 inches) Monthly Rainfall in October 70 mm (2.8 inches) Monthly Rainfall in November 58 mm (2.3 inches) Monthly Rainfall in December
Heat & Humidity / Chance of Frost Frost may occur in January Frost may occur in February Frost may occur in March Frost may occur in April Frost may occur in May No Heat & Humidity or Frost in June No Heat & Humidity or Frost in July No Heat & Humidity or Frost in August Frost may occur in September Frost may occur in October Frost may occur in November Frost may occur in December
UV Index (Maximum) UV 0 (None) in January UV 0 (None) in February UV 1 (Low) in March UV 3 (Moderate) in April UV 4 (Moderate) in May UV 5 (Moderate) in June UV 5 (Moderate) in July UV 4 (Moderate) in August UV 3 (Moderate) in September UV 1 (Low) in October UV 0 (None) in November UV 0 (None) in December
Sea Temperature (°C) 2 °C (36°F) Sea Temperature in January 1 °C (34°F) Sea Temperature in February 1 °C (34°F) Sea Temperature in March 2 °C (36°F) Sea Temperature in April 5 °C (41°F) Sea Temperature in May 9 °C (48°F) Sea Temperature in June 15 °C (59°F) Sea Temperature in July 17 °C (63°F) Sea Temperature in August 14 °C (57°F) Sea Temperature in September 10 °C (50°F) Sea Temperature in October 7 °C (45°F) Sea Temperature in November 3 °C (37°F) Sea Temperature in December
J F M A M J J A S O N D

The Climate Guide for Helsinki shows historical weather averages for each month of the year. This includes max/min temperatures, monthly rainfall, number of days with rain/frost, daily hours of sunshine & daylight, heat & humidity, UV index for sun protection and sea temperature. This gives the best indication of what to expect from the weather on holiday in Helsinki.

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Useful Finland Travel Links
  •  Airlines with flights to/from Finland
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  •  Cheap Holidays to Finland
  •  Finland - Finnish Meteorological Institute (FMI)
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