Climate and monthly weather forecastSejny, Poland
Climate and monthly weather forecast
Weather in January
January, the same as December, in Sejny, Poland, is another subzero cold winter month, with an average temperature fluctuating between -5.7°C (21.7°F) and -2°C (28.4°F). January, with average temperatures reaching a high of -2°C (28.4°F) and a low of -5.7°C (21.7°F), is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is another freezing cold month in Sejny, Poland, with an average temperature ranging between max -0.2°C (31.6°F) and min -4.1°C (24.6°F). The transition from January to February brings an average high-temperature of a still freezing cold -0.2°C (31.6°F), barely different from January's -2°C (28.4°F). Weather in February »Weather in March
March, the first month of the spring in Sejny, is an icy month, with an average temperature varying between 5°C (41°F) and -1.3°C (29.7°F). The shift from February to March brings an increase in the average high-temperature, moving from a subzero cold -0.2°C (31.6°F) to a wintry 5°C (41°F). Weather in March »Weather in April
April in Sejny, Poland, is a fresh spring month, with an average temperature fluctuating between 3.1°C (37.6°F) and 12.5°C (54.5°F). The shift into April is accompanied by a temperature increase, with the average high-temperature rising from a cold 5°C (41°F) in March to a fresh 12.5°C (54.5°F). Weather in April »Weather in May
The last month of the spring, May, is an enjoyable month in Sejny, Poland, with temperature in the range of an average high of 18.2°C (64.8°F) and an average low of 7.8°C (46°F). With the transition into May, Sejny experiences an increase in average high-temperatures, moving up from a fresh 12.5°C (54.5°F) in April to a refreshing 18.2°C (64.8°F). Weather in May »Weather in June
The first month of the summer, June, is an agreeable month in Sejny, Poland, with temperature in the range of an average high of 21.4°C (70.5°F) and an average low of 10.9°C (51.6°F). With the onset of June, Sejny's average high-temperature experiences a slight rise, moving from May's comfortable 18.2°C (64.8°F) to an agreeable 21.4°C (70.5°F). Weather in June »Weather in July
July is a moderately hot summer month in Sejny, Poland, with an average temperature ranging between min 12.8°C (55°F) and max 23.3°C (73.9°F). July stands out as Sejny's warmest month, with an average high-temperature of 23.3°C (73.9°F) and a low-temperature of 12.8°C (55°F). Weather in July »Weather in August
August, the last month of the summer in Sejny, is another warm month, with an average temperature ranging between min 12.8°C (55°F) and max 23.2°C (73.8°F). The average high-temperature during August is a still warm 23.2°C (73.8°F), almost matching the conditions of the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Sejny, is also an enjoyable month, with an average temperature fluctuating between 18°C (64.4°F) and 9.1°C (48.4°F). In the transition to September, Sejny observes a drop in the average high-temperature, moving from a moderately hot 23.2°C (73.8°F) in August to a refreshing 18°C (64.4°F). Weather in September »Weather in October
October, like September, in Sejny, Poland, is a cool autumn month, with an average temperature varying between 4.4°C (39.9°F) and 10.6°C (51.1°F). The onset of October introduces a moderate change in Sejny's weather, with average high-temperatures falling from September's refreshing 18°C (64.4°F) to a fresh 10.6°C (51.1°F). Weather in October »Weather in November
November, the last month of the autumn in Sejny, is also a wintry month, with an average temperature fluctuating between 5.5°C (41.9°F) and 1.6°C (34.9°F). The onset of November introduces a moderate change in Sejny's weather, with average high-temperatures falling from October's fresh 10.6°C (51.1°F) to an icy 5.5°C (41.9°F). Weather in November »Weather in December
December, the first month of the winter in Sejny, is also a wintry month, with an average temperature varying between -2.8°C (27°F) and 0.7°C (33.3°F). December's onset introduces a mild reduction in the average high-temperature, from 5.5°C (41.9°F) in November to a still cold 0.7°C (33.3°F). Weather in December »Updated: Jan 31, 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
January stands out as Sejny's coldest month, with temperatures ranging between an average high of -2°C (28.4°F) and a low of -5.7°C (21.7°F).
With an average relative humidity of 92%, January is the most humid month in Sejny, Poland.
Throughout the year, in Sejny, there are 177.2 rainfall days, and 539mm (21.22") of precipitation is accumulated.
January through May, October through December are months with snowfall.
The month with the most snowfall in Sejny is January, when snow falls for 18.8 days and typically aggregates up to 168mm (6.61") of snow.
In Sejny, during the entire year, snow falls for 72.5 days and aggregates up to 622mm (24.49") of snow.
January and February, with an average of 2.4h of sunshine, are months with the least sunshine in Sejny.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1.
With an average relative humidity of 71%, April is the least humid month in Sejny.
The month with the least rainfall is April, when the rain falls for 14.9 days and typically collects 30mm (1.18") of precipitation.
The months with the highest UV index are May through July, with an average maximum UV index of 5.
June through September are months without snowfall.
The month with the longest days is June, with an average of 17h and 6min of daylight.
The month with the most sunshine is June, with an average of 10.3h of sunshine.
July, noted for its average high-temperature of 23.3°C (73.9°F) and an average low-temperature of 12.8°C (55°F), is considered the warmest month in Sejny, Poland.
The month with the most rainfall in Sejny is July, when the rain falls for 22.8 days and typically aggregates up to 74mm (2.91") of precipitation.
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Sejny, Poland, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
With an average of 7h and 30min of daylight, December has the shortest days of the year.
Average temperature
Sejny, Poland
The warmest month (with the highest average high temperature) is July (23.3°C).
The month with the lowest average high temperature is January (-2°C).
The months with the highest average low temperature are July and August (12.8°C).
The coldest month (with the lowest average low temperature) is January (-5.7°C).
Average pressure
Sejny, Poland
- Average pressure in January:
1015.8mbar - Average pressure in February:
1015.7mbar - Average pressure in March:
1014.7mbar - Average pressure in April:
1015.5mbar - Average pressure in May:
1015.3mbar - Average pressure in June:
1014mbar
- Average pressure in July:
1013mbar - Average pressure in August:
1015.9mbar - Average pressure in September:
1016.7mbar - Average pressure in October:
1017.7mbar - Average pressure in November:
1015.6mbar - Average pressure in December:
1014.6mbar
The month with the highest atmospheric pressure is October (1017.7mbar).
The month with the lowest atmospheric pressure is July (1013mbar).
Average wind speed
Sejny, Poland
- Average wind speed in January:
14.5km/h - Average wind speed in February:
14.1km/h - Average wind speed in March:
13.9km/h - Average wind speed in April:
12.9km/h - Average wind speed in May:
12km/h - Average wind speed in June:
11.6km/h
- Average wind speed in July:
11.3km/h - Average wind speed in August:
10.5km/h - Average wind speed in September:
12km/h - Average wind speed in October:
13.4km/h - Average wind speed in November:
13.7km/h - Average wind speed in December:
14.7km/h
The windiest month (with the highest average wind speed) is December (14.7km/h).
The calmest month (with the lowest average wind speed) is August (10.5km/h).
Average humidity
Sejny, Poland
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is April (71%).
Average rainfall
Sejny, Poland
The wettest month (with the highest rainfall) is July (74mm).
The driest month (with the least rainfall) is April (30mm).
Average rainfall days
Sejny, Poland
- Average rainfall days in January:
7.9 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
14.9 days - Average rainfall days in May:
20.3 days - Average rainfall days in June:
19.6 days
- Average rainfall days in July:
22.8 days - Average rainfall days in August:
17.5 days - Average rainfall days in September:
14.6 days - Average rainfall days in October:
13.8 days - Average rainfall days in November:
13.5 days - Average rainfall days in December:
12.2 days
The month with the highest number of rainy days is July (22.8 days).
The month with the least rainy days is February (7.8 days).
Average snowfall
Sejny, Poland
The month with the highest snowfall is January (168mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Sejny, Poland
- Average snowfall days in January:
18.8 days - Average snowfall days in February:
17.4 days - Average snowfall days in March:
10.8 days - Average snowfall days in April:
3 days - Average snowfall days in May:
0.5 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
1.2 days - Average snowfall days in November:
5.5 days - Average snowfall days in December:
15.3 days
The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Sejny, Poland
- Average daylight in January:
8h and 6min - Average daylight in February:
9h and 48min - Average daylight in March:
11h and 54min - Average daylight in April:
14h and 6min - Average daylight in May:
16h and 0min - Average daylight in June:
17h and 6min
- Average daylight in July:
16h and 30min - Average daylight in August:
14h and 48min - Average daylight in September:
12h and 42min - Average daylight in October:
10h and 30min - Average daylight in November:
8h and 36min - Average daylight in December:
7h and 30min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in January:
2h and 24min - Average sunshine in February:
2h and 24min - Average sunshine in March:
4h and 24min - Average sunshine in April:
8h and 18min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
9h and 6min - Average sunshine in August:
9h and 54min - Average sunshine in September:
7h and 30min - Average sunshine in October:
5h and 12min - Average sunshine in November:
3h and 12min - Average sunshine in December:
2h and 36min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are January and February (Average sunshine: 2h and 24min).
Average sunshine days
Sejny, Poland
- Average sunshine days in January:
7.9 days - Average sunshine days in February:
6.6 days - Average sunshine days in March:
9.1 days - Average sunshine days in April:
12 days - Average sunshine days in May:
8.1 days - Average sunshine days in June:
7.4 days
- Average sunshine days in July:
5.8 days - Average sunshine days in August:
10.4 days - Average sunshine days in September:
11.6 days - Average sunshine days in October:
14.1 days - Average sunshine days in November:
9.1 days - Average sunshine days in December:
7.7 days
The month with the most sunshine days is October (14.1 days).
The month with the least sunshine days is July (5.8 days).
Average UV index
Sejny, Poland
The months with the highest UV index are May, June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover
Sejny, Poland
The months with the most cloud cover are January and February (Cloud cover 78).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility
Sejny, Poland
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January and February (7km).
