Climate and monthly weather forecastHarjavalta, Finland
Climate and monthly weather forecast
Weather in January
January, the same as December, in Harjavalta, Finland, is a freezing cold winter month, with an average temperature fluctuating between -6°C (21.2°F) and -2.3°C (27.9°F). Harjavalta's coldest month, January, registers temperatures that range from a high of -2.3°C (27.9°F) to a low of -6°C (21.2°F). Weather in January »Weather in February
The last month of the winter, February, is another freezing cold month in Harjavalta, Finland, with an average temperature varying between -5.9°C (21.4°F) and -1.8°C (28.8°F). The beginning of February records an average high-temperature of a still subzero cold -1.8°C (28.8°F), almost echoing the conditions of the previous month. Weather in February »Weather in March
March, the first month of the spring in Harjavalta, is a wintry month, with an average temperature varying between 0.9°C (33.6°F) and -3.7°C (25.3°F). Harjavalta experiences an average high-temperature of an icy 0.9°C (33.6°F) in March, marking an insignificant shift from -1.8°C (28.8°F) in February. Weather in March »Weather in April
April is a chilly spring month in Harjavalta, Finland, with an average temperature ranging between max 6.3°C (43.3°F) and min 0.9°C (33.6°F). The shift from March to April is marked by an increase in the average high-temperature, moving from an icy 0.9°C (33.6°F) to a chilly 6.3°C (43.3°F). Weather in April »Weather in May
The last month of the spring, May, is a moderate month in Harjavalta, Finland, with temperature in the range of an average low of 6.1°C (43°F) and an average high of 13.1°C (55.6°F). The shift from April to May brings an increase in the average high-temperature, moving from a frosty 6.3°C (43.3°F) to a moderate 13.1°C (55.6°F). Weather in May »Weather in June
June, the first month of the summer in Harjavalta, is a refreshing month, with an average temperature ranging between min 9.9°C (49.8°F) and max 17°C (62.6°F). With the onset of June, the average high-temperature subtly transitions from a moderate 13.1°C (55.6°F) in May to a comfortable 17°C (62.6°F). Weather in June »Weather in July
July in Harjavalta, Finland, is a pleasant summer month, with an average temperature fluctuating between 20.7°C (69.3°F) and 13.4°C (56.1°F). Harjavalta's warmest temperatures are experienced in July, with average high temperatures of 20.7°C (69.3°F) and lows of 13.4°C (56.1°F). Weather in July »Weather in August
The last month of the summer, August, is another refreshing month in Harjavalta, Finland, with temperature in the range of an average high of 19.8°C (67.6°F) and an average low of 12.8°C (55°F). August's weather displays an average high-temperature of an enjoyable 19.8°C (67.6°F), slightly varied from July's 20.7°C (69.3°F). Weather in August »Weather in September
The first month of the autumn, September, is still a refreshing month in Harjavalta, Finland, with an average temperature ranging between max 14.9°C (58.8°F) and min 9.7°C (49.5°F). The start of September signals a gentle decrease in the average high-temperature, transitioning from a refreshing 19.8°C (67.6°F) in August to a mild 14.9°C (58.8°F). Weather in September »Weather in October
October, the same as September, in Harjavalta, Finland, is a frosty autumn month, with an average temperature varying between 4.1°C (39.4°F) and 8°C (46.4°F). October's arrival correlates with a reduction in the average high-temperature, down from a moderate 14.9°C (58.8°F) in September to a chilly 8°C (46.4°F). Weather in October »Weather in November
November, the last month of the autumn in Harjavalta, is also a wintry month, with an average temperature ranging between max 3.8°C (38.8°F) and min 1.4°C (34.5°F). November's arrival subtly correlates with a reduction in the average high-temperature, down from a chilly 8°C (46.4°F) in October to a cold 3.8°C (38.8°F). Weather in November »Weather in December
December, the first month of the winter in Harjavalta, is also an icy month, with an average temperature fluctuating between 0.3°C (32.5°F) and -2.5°C (27.5°F). December indicates a minor shift in the average high-temperature, from November's icy 3.8°C (38.8°F) to a still cold 0.3°C (32.5°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
Harjavalta notes the coldest temperatures in January, with a average high of -2.3°C (27.9°F) and a low of -6°C (21.2°F).
Throughout the year, in Harjavalta, Finland, there are 154.3 rainfall days, and 508mm (20") of precipitation is accumulated.
Months with snowfall are January through May, October through December.
Throughout the year, in Harjavalta, there are 82.2 snowfall days, and 699mm (27.52") of snow is accumulated.
January through March and December, with an average maximum UV index of 1, are months with the lowest UV index.
The most humid month in Harjavalta is February, with an average relative humidity of 92%.
The month with the most snowfall in Harjavalta, Finland, is February, when snow falls for 16.9 days and typically aggregates up to 163mm (6.42") of snow.
The months with the least rainfall are March and April Rain falls for 9.9 days and accumulates 31mm (1.22") of rain.
May is the least humid month, with an average relative humidity of 69%.
June through September are months without snowfall.
June has the longest days of the year in Harjavalta, Finland, with an average of 19h and 12min of daylight.
June has the most sunshine of the year, with an average of 12.2h of sunshine.
June and July, with an average maximum UV index of 5, are months with the highest UV index.
July is the warmest month in Harjavalta, with an average high-temperature of 20.7°C (69.3°F) and an average low-temperature of 13.4°C (56.1°F).
The month with the most rainfall in Harjavalta is July, when the rain falls for 17.6 days and typically aggregates up to 63mm (2.48") of precipitation.
On Sunday, 27. October 2024, at 04:00, Daylight Saving Time ends in Harjavalta, 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 shortest days in Harjavalta is December, with an average of 5h and 36min of daylight.
The month with the least sunshine in Harjavalta is December, with an average of 2h of sunshine.
Average temperature
Harjavalta, Finland
The warmest month (with the highest average high temperature) is July (20.7°C).
The month with the lowest average high temperature is January (-2.3°C).
The month with the highest average low temperature is July (13.4°C).
The coldest month (with the lowest average low temperature) is January (-6°C).
Average pressure
Harjavalta, Finland
- Average pressure in January:
1010.5mbar - Average pressure in February:
1011.1mbar - Average pressure in March:
1010.5mbar - Average pressure in April:
1013.2mbar - Average pressure in May:
1014.7mbar - Average pressure in June:
1012.1mbar
- Average pressure in July:
1010.9mbar - Average pressure in August:
1012.4mbar - Average pressure in September:
1012.6mbar - Average pressure in October:
1013.3mbar - Average pressure in November:
1010.7mbar - Average pressure in December:
1006.8mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1006.8mbar).
Average wind speed
Harjavalta, Finland
- Average wind speed in January:
15.8km/h - Average wind speed in February:
14.7km/h - Average wind speed in March:
14.6km/h - Average wind speed in April:
13.3km/h - Average wind speed in May:
12.9km/h - Average wind speed in June:
12.8km/h
- Average wind speed in July:
12.6km/h - Average wind speed in August:
13km/h - Average wind speed in September:
14.2km/h - Average wind speed in October:
14.8km/h - Average wind speed in November:
15.4km/h - Average wind speed in December:
16.6km/h
The windiest month (with the highest average wind speed) is December (16.6km/h).
The calmest month (with the lowest average wind speed) is July (12.6km/h).
Average humidity
Harjavalta, Finland
The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is May (69%).
Average rainfall
Harjavalta, Finland
The wettest month (with the highest rainfall) is July (63mm).
The driest months (with the least rainfall) are March and April (31mm).
Average rainfall days
Harjavalta, Finland
- Average rainfall days in January:
7.2 days - Average rainfall days in February:
5.8 days - Average rainfall days in March:
9.9 days - Average rainfall days in April:
12.5 days - Average rainfall days in May:
13.9 days - Average rainfall days in June:
13.5 days
- Average rainfall days in July:
17.6 days - Average rainfall days in August:
16.9 days - Average rainfall days in September:
15.9 days - Average rainfall days in October:
14.9 days - Average rainfall days in November:
14.7 days - Average rainfall days in December:
11.5 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (5.8 days).
Average snowfall
Harjavalta, Finland
The month with the highest snowfall is February (163mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Harjavalta, Finland
- Average snowfall days in January:
17.8 days - Average snowfall days in February:
16.9 days - Average snowfall days in March:
16.8 days - Average snowfall days in April:
5.4 days - Average snowfall days in May:
0.8 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:
2.5 days - Average snowfall days in November:
6.1 days - Average snowfall days in December:
15.9 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Harjavalta, Finland
- Average daylight in January:
6h and 30min - Average daylight in February:
9h and 0min - Average daylight in March:
11h and 48min - Average daylight in April:
14h and 48min - Average daylight in May:
17h and 30min - Average daylight in June:
19h and 12min
- Average daylight in July:
18h and 24min - Average daylight in August:
15h and 48min - Average daylight in September:
12h and 54min - Average daylight in October:
10h and 0min - Average daylight in November:
7h and 18min - Average daylight in December:
5h and 36min
The month with the longest days is June (Average daylight: 19h and 12min).
The month with the shortest days is December (Average daylight: 5h and 36min).
- Average sunshine in January:
2h and 6min - Average sunshine in February:
2h and 54min - Average sunshine in March:
4h and 36min - Average sunshine in April:
7h and 18min - Average sunshine in May:
10h and 12min - Average sunshine in June:
12h and 12min
- Average sunshine in July:
11h and 24min - Average sunshine in August:
9h and 54min - Average sunshine in September:
7h and 24min - Average sunshine in October:
4h and 12min - Average sunshine in November:
2h and 54min - Average sunshine in December:
2h and 0min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 2h and 0min).
Average sunshine days
Harjavalta, Finland
- Average sunshine days in January:
9.4 days - Average sunshine days in February:
8.6 days - Average sunshine days in March:
9.3 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
14.2 days - Average sunshine days in June:
14.1 days
- Average sunshine days in July:
11 days - Average sunshine days in August:
10.8 days - Average sunshine days in September:
10.5 days - Average sunshine days in October:
11.9 days - Average sunshine days in November:
8.5 days - Average sunshine days in December:
8.7 days
The month with the most sunshine days is May (14.2 days).
The month with the least sunshine days is November (8.5 days).
Average UV index
Harjavalta, 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 and December (UV index 1).
Average cloud cover
Harjavalta, Finland
The months with the most cloud cover are January, February and December (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility
Harjavalta, Finland
The month with the highest visibility is June (10km).
The month with the lowest visibility is February (7km).
