Climate and monthly weather forecastIisaku, Estonia
Climate and monthly weather forecast
The climate of Iisaku
In alignment with the Köppen climate classification, Iisaku has a humid continental climate, denoted as Dfb. Occupying a geographical position in Estonia, Iisaku experiences no dry season and has warm summers, presenting a variety of weather patterns throughout the year.The year in Iisaku is characterized by fluctuating temperature conditions. During winter, the town witnesses cold temperatures dropping from minus 6°C (42.8°F) in December to minus 2.8°C (37°F) in February, whereas in the summer, July brings the warmest conditions with a high temperature average of 20.4°C (68.7°F). The climatological data also depicts fluctuating humidity levels during the year, peaking at 92% in February and July. Annual rainfall averages span from 29mm (1.14") in April to 65mm (2.56") in August, with varied rainfall days ranging from 4.8 days in February to 17.8 days in August. Interestingly, the town receives 0mm (0") of snowfall from June to September followed by a significant increase to 138mm (5.43") in December.
The best time to visit Iisaku
Based on the climate data, it is clear that the most favorable time to visit Iisaku is in summer (from June to August) when the weather is warmest and the daylight is longest, with an average of 17 hours daily. The average temperature during these months ranges from 17.2°C (63°F) to 20.4°C (68.7°F), making it perfect for outdoor activities such as sightseeing and hiking. Additionally, average humidity levels are around 73%-75%, providing a comfortable atmosphere for tourists.The worst time to visit Iisaku
Winter months in Iisaku, from December to February, experience the coldest weather making it less preferable for visitors. The temperature during these months drops as low as minus 6°C (42.8°F). Visibility is also reduced to about 8km (5mi) and daylight is least, with an average of 7.1 hours in December to 9.3 hours in February. It should be noted that the traveling conditions can be challenging due to the frequent snowfall of up to 164mm (6.46") in December.Spring weather in Iisaku
Spring in Iisaku occurs from March to May. Starting from a low temperature of minus 2.5°C (36.5°F) in March, spring sees a continual rise to a pleasant 12.8°C (55°F) in May. Concurrently, daylight progressively lengthens from 11.9 hours in March to 17 hours in May. While the rainfall averages increase from 32mm (1.26") in March to 34mm (1.34") in May, the number of snowfall days drops considerably during this period.Summer weather in Iisaku
Summers in Iisaku are mild to warm, with temperatures from 17.2°C (63°F) in June to the yearly high of 20.4°C (68.7°F) in July. Days in June and July are longest, whereas August experiences a slight reduction in daylight hours. Precipitation is at its highest during the summer, with peak rainfall of 65mm (2.56") along with an average of 17.8 rainy days recorded in August.Autumn weather in Iisaku
Officiating in September, autumn enjoins mild to cold weather conditions. September observes a temperature of 15.2°C (59.4°F) which cools down to 4.3°C (39.7°F) by November. Rainfall is frequent in Autumn with the monthly averages ranging from 43mm (1.69") in September to 35mm (1.38") in November. Additionally, the wind speed increases to its yearly peak of 20.8km/h (12.9mph) in November.Winter weather in Iisaku
Iisaku winters begin in December and continue through to February. During this season, the town goes through the lowest temperatures of the year, falling to minus 6°C (42.8°F) in December and January. The winter period also brings ample snowfall with the peak snowfall of 164mm (6.46") in December. The wind speed continues to remain high across the winter period, making the already cold conditions feel even chillier.Weather in January
January is a severe winter month in Iisaku, Estonia. Snowfall is a common sight with 164mm (6.46") of snow expected to blanket the ground. This month is characterized by short daylight hours and frigid temperatures. As January transits to February, anticipate the thick snow, cold temperatures, and high humidity to persist. Temperature records in Iisaku, Estonia, mark January as the coldest month, with highs averaging -2.8°C (27°F) and lows at -6°C (21.2°F). Weather in January »Weather in February
February's weather mirrors January's conditions closely, although slightly less severe. The snowfall reduces slightly to 158mm (6.22") and temperatures show a marginal increase. The transition from February to March heralds the end of intense winter sporadic snow showers may still occur but expect an overall easing of the cold conditions. February's arrival in Iisaku registers an average high-temperature of a still freezing cold -2.5°C (27.5°F), closely aligning with the temperature of the previous month. Weather in February »Weather in March
With the onset of March, the weather in Iisaku starts to moderate, signaling the commencement of spring. The significant reduction in snowfall to 135mm (5.31") is evidence of the marked shift from the harsh winter months. One can find a noticeable diffference between March and April, with temperatures starting to climb, though rainfall also sees a slight increase. The average high-temperature during March registers at a wintry 0.4°C (32.7°F), maintaining a close resemblance to the previous month. Weather in March »Weather in April
April holds the promise of warmer weather and greater sunshine hours. Distinct from March, April witnesses with the snow completely replaced by rain, albeit in moderate amounts. As April gives way to May, the weather turns significantly warmer, and the days longer and brighter. The shift from March to April in Iisaku sees an increase in the average high-temperature, transitioning from a wintry 0.4°C (32.7°F) to a chilly 6°C (42.8°F). Weather in April »Weather in May
May brings spring fully into view. A stark difference is evident between May and April, primarily due to May's substantial increase in daylight hours and sunshine. Residents can look forward to strikingly warmer temperatures as the month progresses into June. In Iisaku, the onset of May comes with an increased average high-temperature, moving from April's chilly 6°C (42.8°F) to a fresh 12.8°C (55°F). Weather in May »Weather in June
June's arrival brings forth a significant change to the weather. There is a high contrast from May to June with increased temperatures, longer daylight hours, and heightened UV index. The journey from June to July endures consistent weather conditions with warmth and extended sunshine hours dominating the landscape. As Iisaku welcomes June, the average high-temperature displays a subtle shift, adjusting from a cool 12.8°C (55°F) in May to a comfortable 17.2°C (63°F). Weather in June »Weather in July
July stands as one of the two warmest months of the year with top temperature peaking at 20.4°C (68.7°F). The onset of summer is fully apparent, and in sharp contrast to June's transitional weather. The transition from July to August continues warm temperatures, but with a slightly higher incidence of rainfall. Iisaku's July weather, marked by an average high temperature of 20.4°C (68.7°F) and an average low temperature of 14.8°C (58.6°F), is the warmest in the year. Weather in July »Weather in August
As the summer season progresses, August carries over the warmth from July, despite a slight dip in temperature. However, the contrast between August and July is minimal, with both months sharing a high average UV index. Moving from August into September, expect cooler weather, reduced daylight hours, and a rise in precipitation levels. Iisaku experiences a recorded average high-temperature of a comfortable 19.7°C (67.5°F) in August, closely aligned with July's 20.4°C (68.7°F). Weather in August »Weather in September
September denotes the beginning of the transition from summer to autumn in Iisaku. Despite lower temperatures compared to August, September remains quite warm. As September crosses into October, weather conditions shift towards more autumnal characteristics. Iisaku in September experiences a gentle temperature dip, with average high-temperatures reducing from a comfortable 19.7°C (67.5°F) in August to a mild 15.2°C (59.4°F). Weather in September »Weather in October
October marks a distinct departure from the warmth of September. This is a month in which autumnal weather firmly takes control. The period from October to November experiences a further dip in temperature with increased wind speeds becoming more apparent. With the onset of October, Iisaku experiences a modest temperature adjustment, with the average high-temperature receding from a mild 15.2°C (59.4°F) in September to a frosty 8.4°C (47.1°F). Weather in October »Weather in November
November brings about a further decrease in temperature drawing Iisaku into the threshold of winter. A visible difference between November and October is manifested in the form of shorter days and an uptick in relative humidity levels. Weather in November »Weather in December
December ushers in the heart of winter in Iisaku, Estonia with striking similarities to January's weather patterns. This month's most notable bombardment of snow, coming in at 138mm (5.43"), sets up the grounds for a white Christmas. Weather in December »Updated: Jan 29, 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
Temperature records in Iisaku mark January as the coldest month, with highs averaging -2.8°C (27°F) and lows at -6°C (21.2°F).
In Iisaku, during the entire year, the rain falls for 151.8 days and collects up to 510mm (20.08") of precipitation.
Months with snowfall in Iisaku, Estonia, are January through May, October through December.
January is the month with the most snowfall in Iisaku, Estonia. Snow falls for 19.3 days and accumulates 164mm (6.46") of snow.
Throughout the year, there are 90.8 snowfall days, and 773mm (30.43") of snow is accumulated.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1.
February is the most humid month in Iisaku, Estonia, with an average relative humidity of 92%.
April is the month with the least rainfall in Iisaku. Rain falls for 11.7 days and accumulates 29mm (1.14") of precipitation.
The months with the lowest humidity are May and June, with an average relative humidity of 73%.
In Iisaku, snow does not fall in June through September.
The month with the longest days is June, with an average of 18h and 24min of daylight.
June has the most sunshine of the year, with an average of 12.3h of sunshine.
June and July, with an average maximum UV index of 5, are months with the highest UV index in Iisaku, Estonia.
Iisaku experiences its average highest temperatures in July, reaching a peak of 20.4°C (68.7°F) and a minimum of 14.8°C (58.6°F).
August is the month with the most rainfall in Iisaku. Rain falls for 17.8 days and accumulates 65mm (2.56") of precipitation.
On Sunday, 27. October 2024, at 04:00, Daylight Saving Time ends, 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 has the shortest days of the year in Iisaku, with an average of 6h and 18min of daylight.
The month with the least sunshine is December, with an average of 1.6h of sunshine.
Average temperature
Iisaku, Estonia
The warmest month (with the highest average high temperature) is July (20.4°C).
The month with the lowest average high temperature is January (-2.8°C).
The month with the highest average low temperature is July (14.8°C).
The coldest months (with the lowest average low temperature) are January and February (-6°C).
Average pressure
Iisaku, Estonia
- Average pressure in January:
1012.7mbar - Average pressure in February:
1013.5mbar - Average pressure in March:
1011.8mbar - Average pressure in April:
1013.8mbar - Average pressure in May:
1015.1mbar - Average pressure in June:
1012.4mbar
- Average pressure in July:
1011.3mbar - Average pressure in August:
1013.9mbar - Average pressure in September:
1014.1mbar - Average pressure in October:
1014.9mbar - Average pressure in November:
1013.4mbar - Average pressure in December:
1010mbar
The month with the highest atmospheric pressure is May (1015.1mbar).
The month with the lowest atmospheric pressure is December (1010mbar).
Average wind speed
Iisaku, Estonia
- Average wind speed in January:
18.2km/h - Average wind speed in February:
16.9km/h - Average wind speed in March:
16.5km/h - Average wind speed in April:
14.6km/h - Average wind speed in May:
13.4km/h - Average wind speed in June:
14.6km/h
- Average wind speed in July:
14km/h - Average wind speed in August:
14.9km/h - Average wind speed in September:
17.4km/h - Average wind speed in October:
19.1km/h - Average wind speed in November:
20km/h - Average wind speed in December:
20.8km/h
The windiest month (with the highest average wind speed) is December (20.8km/h).
The calmest month (with the lowest average wind speed) is May (13.4km/h).
Average humidity
Iisaku, Estonia
The month with the highest relative humidity is February (92%).
The months with the lowest relative humidity are May and June (73%).
Average rainfall
Iisaku, Estonia
The wettest month (with the highest rainfall) is August (65mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days
Iisaku, Estonia
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
4.8 days - Average rainfall days in March:
9.8 days - Average rainfall days in April:
11.7 days - Average rainfall days in May:
12.3 days - Average rainfall days in June:
15.5 days
- Average rainfall days in July:
17.3 days - Average rainfall days in August:
17.8 days - Average rainfall days in September:
17.2 days - Average rainfall days in October:
17.4 days - Average rainfall days in November:
12.6 days - Average rainfall days in December:
9.1 days
The month with the highest number of rainy days is August (17.8 days).
The month with the least rainy days is February (4.8 days).
Average snowfall
Iisaku, Estonia
The month with the highest snowfall is January (164mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Iisaku, Estonia
- Average snowfall days in January:
19.3 days - Average snowfall days in February:
18.5 days - Average snowfall days in March:
16.9 days - Average snowfall days in April:
6.3 days - Average snowfall days in May:
0.9 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:
3.5 days - Average snowfall days in November:
6.7 days - Average snowfall days in December:
18.7 days
The month with the highest number of snowfall days is January (19.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Iisaku, Estonia
- Average daylight in January:
7h and 6min - Average daylight in February:
9h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
14h and 30min - Average daylight in May:
17h and 0min - Average daylight in June:
18h and 24min
- Average daylight in July:
17h and 42min - Average daylight in August:
15h and 24min - Average daylight in September:
12h and 48min - Average daylight in October:
10h and 12min - Average daylight in November:
7h and 42min - Average daylight in December:
6h and 18min
The month with the longest days is June (Average daylight: 18h and 24min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in January:
1h and 54min - Average sunshine in February:
2h and 24min - Average sunshine in March:
4h and 6min - Average sunshine in April:
7h and 12min - Average sunshine in May:
9h and 42min - Average sunshine in June:
12h and 18min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
9h and 54min - Average sunshine in September:
7h and 12min - Average sunshine in October:
3h and 24min - Average sunshine in November:
2h and 36min - Average sunshine in December:
1h and 36min
The month with the most sunshine is June (Average sunshine: 12h and 18min).
The month with the least sunshine is December (Average sunshine: 1h and 36min).
Average sunshine days
Iisaku, Estonia
- Average sunshine days in January:
7.1 days - Average sunshine days in February:
8.1 days - Average sunshine days in March:
9 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
16 days - Average sunshine days in June:
11.9 days
- Average sunshine days in July:
11.4 days - Average sunshine days in August:
11.4 days - Average sunshine days in September:
9.8 days - Average sunshine days in October:
9.1 days - Average sunshine days in November:
9 days - Average sunshine days in December:
4.6 days
The month with the most sunshine days is May (16 days).
The month with the least sunshine days is December (4.6 days).
Average UV index
Iisaku, Estonia
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover
Iisaku, Estonia
The month with the most cloud cover is December (Cloud cover 81).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility
Iisaku, Estonia
The months with the highest visibility are June, July, August and September (10km).
The month with the lowest visibility is February (7km).
