Climate and monthly weather forecastSumiainen, Finland
Climate and monthly weather forecast
Weather in January
January, the same as December, in Sumiainen, Finland, is a freezing cold winter month, with an average temperature ranging between min -9.7°C (14.5°F) and max -5.5°C (22.1°F). In Sumiainen, Finland, the lowest average temperatures are observed in January, with a high of -5.5°C (22.1°F) and a low of -9.7°C (14.5°F). Weather in January »Weather in February
The last month of the winter, February, is also a subzero cold month in Sumiainen, Finland, with an average temperature fluctuating between -9.2°C (15.4°F) and -4.3°C (24.3°F). Sumiainen, Finland, records an average high-temperature of a still subzero cold -4.3°C (24.3°F) in February, maintaining a close correlation with January's -5.5°C (22.1°F). Weather in February »Weather in March
March, the first month of the spring in Sumiainen, is still a freezing cold month, with an average temperature fluctuating between -0.9°C (30.4°F) and -6.5°C (20.3°F). March's onset witnesses a minor shift in the average high-temperature, moving from -4.3°C (24.3°F) in February to a still subzero cold -0.9°C (30.4°F). Weather in March »Weather in April
April is a cold spring month in Sumiainen, Finland, with an average temperature fluctuating between 5.6°C (42.1°F) and -1°C (30.2°F). April signals a shift in the average high-temperature, moving from March's subzero cold -0.9°C (30.4°F) to a wintry 5.6°C (42.1°F). Weather in April »Weather in May
May, the last month of the spring in Sumiainen, is a mild month, with temperature in the range of an average low of 5.3°C (41.5°F) and an average high of 14.4°C (57.9°F). The arrival of May is marked by a notable increase in high-temperatures, climbing from an icy 5.6°C (42.1°F) in April to a moderate 14.4°C (57.9°F). Weather in May »Weather in June
June, the first month of the summer in Sumiainen, is a refreshing month, with temperature in the range of an average high of 18.5°C (65.3°F) and an average low of 9.1°C (48.4°F). The transition from May to June brings a subtle temperature rise, with average high-temperatures increasing from a refreshing 14.4°C (57.9°F) to a comfortable 18.5°C (65.3°F). Weather in June »Weather in July
July is a pleasant summer month in Sumiainen, Finland, with an average temperature fluctuating between 12.2°C (54°F) and 21.5°C (70.7°F). Sumiainen reaches its highest average temperatures in July, measuring 21.5°C (70.7°F) at the peak and 12.2°C (54°F) at the lowest. Weather in July »Weather in August
August, the last month of the summer in Sumiainen, is another refreshing month, with an average temperature fluctuating between 19.8°C (67.6°F) and 10.8°C (51.4°F). The transition into August notes an average high-temperature of a refreshing 19.8°C (67.6°F), revealing a mild distinction from the 21.5°C (70.7°F) in July. Weather in August »Weather in September
September, the first month of the autumn in Sumiainen, is also a moderate month, with an average temperature fluctuating between 13.6°C (56.5°F) and 7.1°C (44.8°F). In September, the meteorological conditions alter, with the average high-temperature shifting from a refreshing 19.8°C (67.6°F) in August to a mild 13.6°C (56.5°F). Weather in September »Weather in October
October, the same as September, is a wintry autumn month in Sumiainen, Finland, with an average temperature fluctuating between 5.6°C (42.1°F) and 1.5°C (34.7°F). Sumiainen's weather undergoes a significant change with the arrival of October, as the average high-temperature drops from a refreshing 13.6°C (56.5°F) in September to an icy 5.6°C (42.1°F). Weather in October »Weather in November
The last month of the autumn, November, is also a wintry month in Sumiainen, Finland, with temperature in the range of an average low of -1.5°C (29.3°F) and an average high of 1.5°C (34.7°F). The arrival of November corresponds with a light shift in temperature, down from an icy 5.6°C (42.1°F) in October to a still wintry 1.5°C (34.7°F). Weather in November »Weather in December
The first month of the winter, December, is also a subzero cold month in Sumiainen, Finland, with an average temperature fluctuating between -2.6°C (27.3°F) and -5.9°C (21.4°F). December brings a minor shift in the average high-temperature, adjusting from a wintry 1.5°C (34.7°F) in November to a subzero cold -2.6°C (27.3°F). Weather in December »Updated: Feb 1, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
During the coldest month in Sumiainen, January, temperatures average a high of -5.5°C (22.1°F) and a low of -9.7°C (14.5°F).
The months with the highest humidity in Sumiainen, Finland, are January and February, with an average relative humidity of 95%.
In Sumiainen, during the entire year, the rain falls for 121.2 days and collects up to 403mm (15.87") of precipitation.
January through June, September through December are months with snowfall in Sumiainen.
Throughout the year, there are 96 snowfall days, and 932mm (36.69") of snow is accumulated.
The months with the lowest UV index in Sumiainen, Finland, are January through March, November and December, with an average maximum UV index of 1.
The months with the least rainfall in Sumiainen are February and March Rain falls for 2.3 days and accumulates 23mm (0.91") of rain.
May is the least humid month in Sumiainen, with an average relative humidity of 67%.
With an average of 19h and 54min of daylight, June has the longest days of the year in Sumiainen, Finland.
The month with the most sunshine is June, with an average of 11.5h of sunshine.
The warmest month in Sumiainen is July, with an average high-temperature of 21.5°C (70.7°F) and an average low-temperature of 12.2°C (54°F).
July is the month with the most rainfall in Sumiainen, Finland. Rain falls for 15.8 days and accumulates 50mm (1.97") of precipitation.
July and August are months without snowfall in Sumiainen, Finland.
With an average maximum UV index of 5, July is the month with the highest UV index in Sumiainen, Finland.
On Sunday, 27. October 2024, at 04:00, Daylight Saving Time ends in Sumiainen, Finland, and the time zone changes from EEST to EET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 03:00, and the time zone reverts from EET to EEST.
December is the month with the most snowfall. Snow falls for 19.3 days and accumulates 185mm (7.28") of snow.
December has the shortest days of the year, with an average of 5h and 6min of daylight.
With an average of 0.8h of sunshine, December has the least sunshine of the year in Sumiainen.
Average temperature
Sumiainen, Finland
The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is January (-5.5°C).
The month with the highest average low temperature is July (12.2°C).
The coldest month (with the lowest average low temperature) is January (-9.7°C).
Average pressure
Sumiainen, Finland
- Average pressure in January:
1011.3mbar - Average pressure in February:
1011.9mbar - Average pressure in March:
1010.2mbar - Average pressure in April:
1012.7mbar - Average pressure in May:
1014.5mbar - Average pressure in June:
1011.5mbar
- Average pressure in July:
1010.8mbar - Average pressure in August:
1012.6mbar - Average pressure in September:
1012.8mbar - Average pressure in October:
1013.4mbar - Average pressure in November:
1011.5mbar - Average pressure in December:
1007.6mbar
The month with the highest atmospheric pressure is May (1014.5mbar).
The month with the lowest atmospheric pressure is December (1007.6mbar).
Average wind speed
Sumiainen, Finland
- Average wind speed in January:
11.7km/h - Average wind speed in February:
11.6km/h - Average wind speed in March:
11.7km/h - Average wind speed in April:
10.5km/h - Average wind speed in May:
10.7km/h - Average wind speed in June:
10.6km/h
- Average wind speed in July:
9.6km/h - Average wind speed in August:
9.9km/h - Average wind speed in September:
10.9km/h - Average wind speed in October:
11.5km/h - Average wind speed in November:
11.9km/h - Average wind speed in December:
12.5km/h
The windiest month (with the highest average wind speed) is December (12.5km/h).
The calmest month (with the lowest average wind speed) is July (9.6km/h).
Average humidity
Sumiainen, Finland
The months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is May (67%).
Average rainfall
Sumiainen, Finland
The wettest month (with the highest rainfall) is July (50mm).
The driest months (with the least rainfall) are February and March (23mm).
Average rainfall days
Sumiainen, Finland
- Average rainfall days in January:
3.9 days - Average rainfall days in February:
2.3 days - Average rainfall days in March:
5.3 days - Average rainfall days in April:
11.6 days - Average rainfall days in May:
12.3 days - Average rainfall days in June:
15.3 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
14.7 days - Average rainfall days in September:
13.2 days - Average rainfall days in October:
10.3 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
6 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (2.3 days).
Average snowfall
Sumiainen, Finland
- Average snowfall in January:
184mm - Average snowfall in February:
143mm - Average snowfall in March:
144mm - Average snowfall in April:
99mm - Average snowfall in May:
22mm - Average snowfall in June:
1mm
The month with the highest snowfall is December (185mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days
Sumiainen, Finland
- Average snowfall days in January:
18 days - Average snowfall days in February:
17.3 days - Average snowfall days in March:
16.6 days - Average snowfall days in April:
8.3 days - Average snowfall days in May:
1.2 days - Average snowfall days in June:
0.2 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.3 days - Average snowfall days in October:
5.1 days - Average snowfall days in November:
9.7 days - Average snowfall days in December:
19.3 days
The month with the highest number of snowfall days is December (19.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Sumiainen, Finland
- Average daylight in January:
6h and 6min - Average daylight in February:
8h and 48min - Average daylight in March:
11h and 48min - Average daylight in April:
14h and 54min - Average daylight in May:
17h and 54min - Average daylight in June:
19h and 54min
- Average daylight in July:
18h and 54min - Average daylight in August:
16h and 0min - Average daylight in September:
13h and 0min - Average daylight in October:
9h and 54min - Average daylight in November:
6h and 54min - Average daylight in December:
5h and 6min
The month with the longest days is June (Average daylight: 19h and 54min).
The month with the shortest days is December (Average daylight: 5h and 6min).
- Average sunshine in January:
1h and 18min - Average sunshine in February:
2h and 6min - Average sunshine in March:
3h and 18min - Average sunshine in April:
5h and 18min - Average sunshine in May:
9h and 30min - Average sunshine in June:
11h and 30min
- Average sunshine in July:
11h and 18min - Average sunshine in August:
9h and 12min - Average sunshine in September:
6h and 18min - Average sunshine in October:
3h and 36min - Average sunshine in November:
2h and 6min - Average sunshine in December:
0h and 48min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).
Average sunshine days
Sumiainen, Finland
- Average sunshine days in January:
12.9 days - Average sunshine days in February:
11.5 days - Average sunshine days in March:
11.4 days - Average sunshine days in April:
11.5 days - Average sunshine days in May:
16.3 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
14.1 days - Average sunshine days in September:
14 days - Average sunshine days in October:
15.2 days - Average sunshine days in November:
11.4 days - Average sunshine days in December:
9.6 days
The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is December (9.6 days).
Average UV index
Sumiainen, Finland
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover
Sumiainen, Finland
The month with the most cloud cover is January (Cloud cover 83).
The months with the least cloud cover are July and August (Cloud cover 45).
Average visibility
Sumiainen, Finland
The months with the highest visibility are May, June, July and August (9km).
The months with the lowest visibility are January and February (5km).
