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Mariehamn, Åland Islands Climate & Temperature

  • Mariehamn, Åland Islands, Finland is at 60°7'N, 19°53'E, 4 m (13 ft). See map.
  • Mariehamn, Åland Islands has a humid continental climate with severe winters, no dry season, warm summers and strong seasonality (Köppen-Geiger classification: Dfb).
  • The average annual temperature is 5.4 degrees Celsius (41.8 degrees Fahrenheit). See the temperatures page for a monthly breakdown and the fixed scale graph.
  • Average monthly temperatures vary by 21.5 °C (38.7°F). This indicates that the continentality type is continental, subtype subcontinental. Mariehamn, Åland Islands Climate Graph
  • In the winter time records indicate temperatures by day reach -0.3°C (31.4°F) on average falling to -5.3°C (22.4°F) overnight.
  • In spring time temperatures climb reaching 6.3°C (43.4°F) generally in the afternoon with overnight lows of -1.3°C (29.6°F).
  • During summer average high temperatures are 19.3°C (66.8°F) and average low temperatures are 10.7°C (51.2°F).
  • Come autumn/ fall temperatures decrease achieving average highs of 9.7°C (49.4°F) during the day and lows of 4.3°C (39.8°F) generally shortly after sunrise.
  • Total annual Precipitation averages 558 mm (22 inches) which is equivalent to 558 Litres/m² (13.69 Gallons/ft²).
  • Were you to burrow down through the centre of the Earth from Mariehamn you would pop up nearest to the climate station at Mcmurdo Sound, Antarctica where you would find a Ice Cap climate.

Mariehamn, Åland Islands Climate Table

  Climate Variable Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 
Average Max Temperature °C ( °F) -1 (30) -2 (28) 1 (34) 6 (43) 12 (54) 17 (63) 21 (70) 20 (68) 15 (59) 9 (48) 5 (41) 2 (36) 9 (48)
 
Average Temperature °C ( °F) -4 (26) -5 (23) -3 (28) 3 (37) 8 (46) 13 (55) 17 (62) 16 (61) 12 (53) 7 (44) 3 (37) 0 (32) 5 (42)
 
Average Min Temperature °C ( °F) -6 (21) -8 (18) -6 (21) -1 (30) 3 (37) 8 (46) 12 (54) 12 (54) 8 (46) 4 (39) 1 (34) -2 (28) 2 (36)
 
Average Precipitation mm (in) 48 (2) 31 (1) 26 (1) 33 (1) 32 (1) 37 (1) 45 (2) 66 (3) 64 (3) 57 (2) 62 (2) 57 (2) 558 (22)
Number of Wet Days (probability of rain on a day %) 20 (65) 16 (57) 13 (42) 12 (40) 10 (32) 11 (37) 12 (39) 13 (42) 16 (53) 18 (58) 19 (63) 20 (65) 180 (49)
Average Daylight Hours/ Day 6h 48' 9h 05' 11h 47' 14h 37' 17h 13' 18h 45' 18h 02' 15h 41' 12h 53' 10h 03' 7h 28' 6h 00' 12h 00'
Sun altitude at solar noon on the 21st day (°). 10.1 19.4 30.2 41.8 50.1 53.3 50.3 42 30.5 19.1 10 6.6 30.2

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