Climate and monthly weather forecastIsojoki, Finland
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Isojoki, Finland, with an average temperature varying between -4.3°C (24.3°F) and -8.3°C (17.1°F). In Isojoki, the lowest average temperatures are observed in January, with a high of -4.3°C (24.3°F) and a low of -8.3°C (17.1°F). Weather in January »Weather in February
The last month of the winter, February, is another freezing cold month in Isojoki, Finland, with temperature in the range of an average low of -7.9°C (17.8°F) and an average high of -2.9°C (26.8°F). The shift from January to February is characterized by an average high-temperature of a still subzero cold -2.9°C (26.8°F), not significantly different from the -4.3°C (24.3°F) of January. Weather in February »Weather in March
The first month of the spring, March, is a wintry month in Isojoki, Finland, with an average temperature ranging between min -5.6°C (21.9°F) and max 0.3°C (32.5°F). As March arrives, a slight rise in the average high-temperature is observed, moving from a subzero cold -2.9°C (26.8°F) in February to a wintry 0.3°C (32.5°F). Weather in March »Weather in April
April in Isojoki, Finland, is a chilly spring month, with an average temperature varying between 6.9°C (44.4°F) and -0.3°C (31.5°F). The start of April brings a rise in the average high-temperature, moving from a wintry 0.3°C (32.5°F) in March to a frosty 6.9°C (44.4°F). Weather in April »Weather in May
The last month of the spring, May, is a mild month in Isojoki, Finland, with an average temperature ranging between min 5.2°C (41.4°F) and max 14.8°C (58.6°F). As April transitions into May, a change in temperatures is observed, with average highs moving from a frosty 6.9°C (44.4°F) to a mild 14.8°C (58.6°F). Weather in May »Weather in June
The first month of the summer, June, is a refreshing month in Isojoki, Finland, with an average temperature varying between 8.7°C (47.7°F) and 18.4°C (65.1°F). The arrival of June witnesses a small shift in the average high-temperature, moving from a mild 14.8°C (58.6°F) in May to a still refreshing 18.4°C (65.1°F). Weather in June »Weather in July
July in Isojoki, Finland, is a pleasant summer month, with temperature in the range of an average low of 12°C (53.6°F) and an average high of 21.3°C (70.3°F). July, with its average high-temperature of 21.3°C (70.3°F) and an average low-temperature of 12°C (53.6°F), holds the record as the warmest month. Weather in July »Weather in August
The last month of the summer, August, is another comfortable month in Isojoki, Finland, with an average temperature ranging between min 11°C (51.8°F) and max 19.8°C (67.6°F). Isojoki's average high-temperature marks an enjoyable 19.8°C (67.6°F) with the advent of August, closely mirroring that of the preceding month. Weather in August »Weather in September
The first month of the autumn, September, is also a moderate month in Isojoki, Finland, with an average temperature fluctuating between 7.5°C (45.5°F) and 14.6°C (58.3°F). With September's arrival, Isojoki's weather changes as the average high-temperature falls from a refreshing 19.8°C (67.6°F) in August to a moderate 14.6°C (58.3°F). Weather in September »Weather in October
October, like September, is another chilly autumn month in Isojoki, Finland, with an average temperature varying between 2.1°C (35.8°F) and 7°C (44.6°F). The start of October comes with a reduction in the average high-temperature, receding from a moderate 14.6°C (58.3°F) in September to a chilly 7°C (44.6°F). Weather in October »Weather in November
The last month of the autumn, November, is also an icy month in Isojoki, Finland, with an average temperature ranging between min -0.5°C (31.1°F) and max 2.5°C (36.5°F). The beginning of November brings a slight decrease in the average high-temperature, transitioning from a chilly 7°C (44.6°F) in October to a wintry 2.5°C (36.5°F). Weather in November »Weather in December
The first month of the winter, December, is also a subzero cold month in Isojoki, Finland, with an average temperature varying between -5°C (23°F) and -1.5°C (29.3°F). Isojoki's December weather shows a modest shift in high-temperatures, falling from November's cold 2.5°C (36.5°F) to a subzero cold -1.5°C (29.3°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
January, having an average high-temperature of -4.3°C (24.3°F) and an average low-temperature of -8.3°C (17.1°F), is the coldest month in Isojoki.
January and February, with an average relative humidity of 94%, are most humid months in Isojoki, Finland.
In Isojoki, Finland, during the entire year, the rain falls for 144.9 days and collects up to 493mm (19.41") of precipitation.
Months with snowfall in Isojoki are January through May, October through December.
Throughout the year, in Isojoki, there are 102.4 snowfall days, and 1049mm (41.3") of snow is accumulated.
January and December, with an average of 1.8h of sunshine, are months with the least sunshine in Isojoki.
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Isojoki, Finland.
April and September are months with the least rain in Isojoki when the rain falls for 13.4 days and typically aggregates up to 34mm (1.34") of rain.
May is the least humid month in Isojoki, Finland, with an average relative humidity of 67%.
June through September are months without snowfall.
With an average of 19h and 36min of daylight, June has the longest days of the year in Isojoki, Finland.
The month with the most sunshine is June, with an average of 11.7h of sunshine.
The months with the highest UV index in Isojoki, Finland, are June and July, with an average maximum UV index of 5.
In Isojoki, July is the warmest month, with temperatures averaging a high of 21.3°C (70.3°F) and a low of 12°C (53.6°F).
July is the month with the most rainfall in Isojoki, Finland. Rain falls for 17.7 days and accumulates 54mm (2.13") of precipitation.
On Sunday, 27. October 2024, at 04:00, Daylight Saving Time ends in Isojoki, 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.
The month with the most snowfall is December, when snow falls for 20.3 days and typically aggregates up to 234mm (9.21") of snow.
The month with the shortest days in Isojoki is December, with an average of 5h and 18min of daylight.
Average temperature
Isojoki, Finland
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (-4.3°C).
The month with the highest average low temperature is July (12°C).
The coldest month (with the lowest average low temperature) is January (-8.3°C).
Average pressure
Isojoki, Finland
- Average pressure in January:
1010.5mbar - Average pressure in February:
1011.1mbar - Average pressure in March:
1010.3mbar - Average pressure in April:
1013mbar - Average pressure in May:
1014.6mbar - Average pressure in June:
1011.9mbar
- Average pressure in July:
1010.8mbar - Average pressure in August:
1012.4mbar - Average pressure in September:
1012.6mbar - Average pressure in October:
1013.2mbar - Average pressure in November:
1010.7mbar - Average pressure in December:
1006.8mbar
The month with the highest atmospheric pressure is May (1014.6mbar).
The month with the lowest atmospheric pressure is December (1006.8mbar).
Average wind speed
Isojoki, Finland
- Average wind speed in January:
12.8km/h - Average wind speed in February:
12.7km/h - Average wind speed in March:
12.6km/h - Average wind speed in April:
11.8km/h - Average wind speed in May:
11.8km/h - Average wind speed in June:
11.2km/h
- Average wind speed in July:
10.6km/h - Average wind speed in August:
10.6km/h - Average wind speed in September:
11.3km/h - Average wind speed in October:
11.7km/h - Average wind speed in November:
12.3km/h - Average wind speed in December:
13.1km/h
The windiest month (with the highest average wind speed) is December (13.1km/h).
The calmest months (with the lowest average wind speed) are July and August (10.6km/h).
Average humidity
Isojoki, Finland
The months with the highest relative humidity are January and February (94%).
The month with the lowest relative humidity is May (67%).
Average rainfall
Isojoki, Finland
The wettest month (with the highest rainfall) is July (54mm).
The driest months (with the least rainfall) are April and September (34mm).
Average rainfall days
Isojoki, Finland
- Average rainfall days in January:
5.5 days - Average rainfall days in February:
4.7 days - Average rainfall days in March:
8.2 days - Average rainfall days in April:
13.4 days - Average rainfall days in May:
14.6 days - Average rainfall days in June:
14.3 days
- Average rainfall days in July:
17.7 days - Average rainfall days in August:
15.8 days - Average rainfall days in September:
15.3 days - Average rainfall days in October:
13.9 days - Average rainfall days in November:
13.5 days - Average rainfall days in December:
8 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (4.7 days).
Average snowfall
Isojoki, Finland
- Average snowfall in January:
208mm - Average snowfall in February:
208mm - Average snowfall in March:
202mm - Average snowfall in April:
101mm - Average snowfall in May:
12mm - Average snowfall in June:
0mm
The month with the highest snowfall is December (234mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Isojoki, Finland
- Average snowfall days in January:
20.8 days - Average snowfall days in February:
19.7 days - Average snowfall days in March:
19.8 days - Average snowfall days in April:
7.5 days - Average snowfall days in May:
1.3 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:
3.7 days - Average snowfall days in November:
9.3 days - Average snowfall days in December:
20.3 days
The month with the highest number of snowfall days is January (20.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Isojoki, Finland
- Average daylight in January:
6h and 18min - Average daylight in February:
8h and 54min - Average daylight in March:
11h and 48min - Average daylight in April:
14h and 54min - Average daylight in May:
17h and 48min - Average daylight in June:
19h and 36min
- Average daylight in July:
18h and 42min - Average daylight in August:
15h and 54min - Average daylight in September:
12h and 54min - Average daylight in October:
9h and 54min - Average daylight in November:
7h and 6min - Average daylight in December:
5h and 18min
The month with the longest days is June (Average daylight: 19h and 36min).
The month with the shortest days is December (Average daylight: 5h and 18min).
- Average sunshine in January:
1h and 48min - Average sunshine in February:
2h and 30min - Average sunshine in March:
3h and 54min - Average sunshine in April:
6h and 30min - Average sunshine in May:
9h and 36min - Average sunshine in June:
11h and 42min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
9h and 30min - Average sunshine in September:
6h and 42min - Average sunshine in October:
4h and 0min - Average sunshine in November:
2h and 24min - Average sunshine in December:
1h and 48min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 1h and 48min).
Average sunshine days
Isojoki, Finland
- Average sunshine days in January:
9 days - Average sunshine days in February:
7.1 days - Average sunshine days in March:
8.3 days - Average sunshine days in April:
10.6 days - Average sunshine days in May:
14.4 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
11 days - Average sunshine days in August:
12.8 days - Average sunshine days in September:
12.1 days - Average sunshine days in October:
13.6 days - Average sunshine days in November:
10.2 days - Average sunshine days in December:
7.5 days
The month with the most sunshine days is May (14.4 days).
The month with the least sunshine days is February (7.1 days).
Average UV index
Isojoki, Finland
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
Isojoki, Finland
The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are June and July (Cloud cover 44).
Average visibility
Isojoki, Finland
The months with the highest visibility are May, June, July and August (9km).
The months with the lowest visibility are January and February (6km).
