Climate and monthly weather forecastRiihimäki, Finland
Climate and monthly weather forecast
The climate of Riihimäki
Riihimäki, located in the southern part of Finland, experiences a Humid Continental climate, characterized by large temperature variations throughout the year, with warm summers and cold winters. This climate type is identified as Dfb under Köppen climate classification.Examining the weather data, the highest observed temperature falls between 22.2°C (72°F) in July and a low of -8.3°C (17.1°F) in January. Despite this range, the mercury rarely breaches 22.2°C (72°F) or drops below -8.3°C (17.1°F), keeping the climate relatively consistent. The prevalence of snow becomes evident in the colder months, with snowfall reaching as high as 227mm (8.94") in January and 210mm (8.27") in December. By contrast, the hot summer months, from June to August, witness no snowfall.
Rainfall in Riihimäki varies marginally across the year, ranging from 18mm (0.71") in August to 44mm (1.73") in December. Although December sees the most significant precipitation, there is no specific dry period in the year. Contrastingly, the lowest amount of rainfall is seen in August, though it is slightly higher than the national average. Relative humidity remains highest at 95% in February and drops to the year's low at 67% in May, painting a picture of relatively humid conditions throughout the year.
The consistency of the wind speed is found to be in the range of 9.1km/h (5.7mph) in August to 11.4km/h (7.1mph) in December, exhibiting mild to moderate wind conditions. Furthermore, the cloud cover varies from 42% in August and September to a peak of 78% in January and February.
The best time to visit Riihimäki
Considering the climate data, the optimal time for visiting Riihimäki would be between June to August. The average temperature during these months varies from 19.4°C (66.9°F) to 22.2°C (72°F), providing pleasant and warm conditions. The hours of sunshine range from 9.4h to 11.7h per day, offering sufficient daylight for tourists to enjoy outdoor activities.The worst time to visit Riihimäki
The least favorable time to visit Riihimäki would be in the colder months between December and February. These months report the lowest temperatures, dropping to -8.3°C (17.1°F) in January. Additionally, the presence of considerable snowfall, totalling 227mm (8.94") in January and 210mm (8.27") in December, can hinder travel and outdoor activities.Spring weather in Riihimäki
March signals the onset of Spring with temperatures rising from -2.8°C (27°F) to 7.8°C (46°F) by May. The increase in temperature is accompanied by a decrease in snowfall, from 202mm (7.95") in March to no snow by May. Rainfall remains relatively low during spring, ranging from 26mm (1.02") to 35mm (1.38").Summer weather in Riihimäki
In Riihimäki, summer warmth endures between June and August. The average temperatures during these months oscillate from 19.4°C (66.9°F) to 22.2°C (72°F). Rainfall doesn't intrude much into summer, peaking at just 29mm (1.14") in June and July and declining to 18mm (0.71") in August, the lowest rainfall month.Autumn weather in Riihimäki
Autumn in Riihimäki settles between September and November, with temperatures dropping from 15.2°C (59.4°F) in September to 2.9°C (37.2°F) in November. Rainfall manifests during autumn, marking 36mm (1.42") in October and 40mm (1.57") in November. The cloud cover is notably increasing in autumn, reaching a peak of 75% by November.Winter weather in Riihimäki
The arrival of December signals the start of winter and brings along a significant drop in temperature, plunging to -0.8°C (30.6°F) in December and reaching the year's low at -8.3°C (17.1°F) in January. Snowfall is predominant during these months, with substantial amounts of 210mm (8.27") in December and peaking at 227mm (8.94") in January. Despite the heavy snowfall, the rainfall doesn't decrease considerably, maintaining an average of 44mm (1.73") in December.Weather in January
Riihimäki welcomes the new year with the chill of winter. Snow dominates the landscape with an average snowfall of 227mm (8.94") and with the mercury dipping to as low as -8.3°C (17.1°F). The daylight hours are short and the sun only emerges for a brief 1.8 hours a day. Weather in January »Weather in February
The wintry conditions persist in February with minimal changes from January's weather. It holds on to the winter reputation with an average high temperature hovering around -2.8°C (27°F). The city experiences a slight increase in daylight hours, offering a bit of respite for the residents. Weather in February »Weather in March
March marks the transition between winter and spring with temperature highs slightly crossing the freezing point to reach 0.7°C (33.3°F) on average. The snowfall decreases significantly from the preceding month, paving the way for longer daylight hours. Weather in March »Weather in April
In April, Riihimäki begins to welcome warmer days, and the landscape begins to transform. This is evident as the average temperature jumps from 0.7°C (33.3°F) in March to a noticeable 7.8°C (46°F). It’s a time of change, as flora and fauna start to revive after the long winter. Weather in April »Weather in May
As the middle of the year approaches, May brings in full-fledged spring with its warming temperatures. Sunshine hours take a leap to hit an average of 9.5 hours per day. This month sees a significant reduction in the winter wear, being replaced by lightweight jackets. Weather in May »Weather in June
June is the prelude to summer, and it provides a glimpse of what to expect. It brings the highest level of daylight, accounting for about 19 hours per day. The average high temperature reaches 19.4°C (66.9°F), setting the ground for summer. Weather in June »Weather in July
July is the warmest month in Riihimäki with the temperature hitting a peak at 22.2°C (72°F). It pulses with the summer rhythm as the city lights up. Heading outdoors becomes more pleasurable with the warm wind gently blowing through. Weather in July »Weather in August
The peak of summer is experienced in August. With the highest temperature hitting 20.8°C (69.4°F), it's the perfect time for sunbathing. Riihimäki gleams brighter as the sun rays paint the cityscape with a golden hue. There’s an element of fervor in the air as the daylight hours remain considerable. Weather in August »Weather in September
September ushers in the fall season, and there are signs of weather transition. The monthly temperature drops to an average high of 15.2°C (59.4°F). A transformation begins as the city starts to reveal its fall colors. The wind picks up a gentle rhythm, hinting at the approaching winter. Weather in September »Weather in October
As October steps in, Riihimäki prepares for the return of winter. The average low temperatures drop to 2.5°C (36.5°F) indicating a significant change. Visitors and residents should pack appropriately to meet the weather's changing demands. Weather in October »Weather in November
November weather exhibits a more visible change from fall to winter. The first signs of winter are evident as the city receives an average snowfall of 74mm (2.91"). The daylight hours reduce considerably, giving way to longer nights. Weather in November »Weather in December
Riihimäki dives deep into winter in December with average temperature lows dropping to -4.3°C (24.3°F). Snowfall intensifies and blankets the city, bringing in the festive spirit. Despite the harsh cold, the city showcases an enchanting winter wonderland vibe. 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 proves to be the coldest month, recording an average maximum temperature of -3.8°C (25.2°F) and a minimum temperature of -8.3°C (17.1°F).
In Riihimäki, during the entire year, the rain falls for 117.8 days and collects up to 373mm (14.69") of precipitation.
Months with snowfall in Riihimäki are January through May, October through December.
In Riihimäki, during the entire year, snow falls for 102.9 days and aggregates up to 1059mm (41.69") of snow.
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index.
February is the most humid month, with an average relative humidity of 95%.
February is the month with the most snowfall in Riihimäki. Snow falls for 21.5 days and accumulates 229mm (9.02") of snow.
May is the least humid month in Riihimäki, Finland, with an average relative humidity of 67%.
June through September are months without snowfall.
June has the longest days of the year, with an average of 19h and 0min of daylight.
The month with the most sunshine in Riihimäki, Finland, is June, with an average of 11.7h of sunshine.
June and July, with an average maximum UV index of 5, are months with the highest UV index in Riihimäki, Finland.
The warmest period in Riihimäki is July, when temperatures fluctuate between an average high of 22.2°C (72°F) and a low of 12.4°C (54.3°F).
August is the month with the least rainfall in Riihimäki. Rain falls for 11 days and accumulates 18mm (0.71") of precipitation.
On Sunday, 27. October 2024, at 04:00, Daylight Saving Time ends in Riihimäki, 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.
The month with the most rainfall is December, when the rain falls for 9.5 days and typically aggregates up to 44mm (1.73") of precipitation.
With an average of 5h and 48min of daylight, December has the shortest days of the year in Riihimäki.
The month with the least sunshine in Riihimäki, Finland, is December, with an average of 1.5h of sunshine.
Average temperature
Riihimäki, Finland
The warmest month (with the highest average high temperature) is July (22.2°C).
The month with the lowest average high temperature is January (-3.8°C).
The month with the highest average low temperature is July (12.4°C).
The coldest month (with the lowest average low temperature) is January (-8.3°C).
Average pressure
Riihimäki, Finland
- Average pressure in January:
1011.7mbar - Average pressure in February:
1012.4mbar - Average pressure in March:
1011.1mbar - Average pressure in April:
1013.4mbar - Average pressure in May:
1014.9mbar - Average pressure in June:
1012.1mbar
- Average pressure in July:
1011.1mbar - Average pressure in August:
1013.3mbar - Average pressure in September:
1013.2mbar - Average pressure in October:
1014.1mbar - Average pressure in November:
1012mbar - Average pressure in December:
1008.3mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.3mbar).
Average wind speed
Riihimäki, Finland
- Average wind speed in January:
10.8km/h - Average wind speed in February:
10.3km/h - Average wind speed in March:
10.7km/h - Average wind speed in April:
9.9km/h - Average wind speed in May:
10km/h - Average wind speed in June:
10.1km/h
- Average wind speed in July:
9.4km/h - Average wind speed in August:
9.1km/h - Average wind speed in September:
10km/h - Average wind speed in October:
10.3km/h - Average wind speed in November:
10.5km/h - Average wind speed in December:
11.4km/h
The windiest month (with the highest average wind speed) is December (11.4km/h).
The calmest month (with the lowest average wind speed) is August (9.1km/h).
Average humidity
Riihimäki, Finland
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (67%).
Average rainfall
Riihimäki, Finland
The wettest month (with the highest rainfall) is December (44mm).
The driest month (with the least rainfall) is August (18mm).
Average rainfall days
Riihimäki, Finland
- Average rainfall days in January:
5.8 days - Average rainfall days in February:
4.2 days - Average rainfall days in March:
8.5 days - Average rainfall days in April:
12.9 days - Average rainfall days in May:
10.8 days - Average rainfall days in June:
8.8 days
- Average rainfall days in July:
11 days - Average rainfall days in August:
11 days - Average rainfall days in September:
10.3 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
13.5 days - Average rainfall days in December:
9.5 days
The month with the highest number of rainy days is November (13.5 days).
The month with the least rainy days is February (4.2 days).
Average snowfall
Riihimäki, Finland
- Average snowfall in January:
227mm - Average snowfall in February:
229mm - Average snowfall in March:
202mm - Average snowfall in April:
63mm - Average snowfall in May:
27mm - Average snowfall in June:
0mm
The month with the highest snowfall is February (229mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Riihimäki, Finland
- Average snowfall days in January:
22.2 days - Average snowfall days in February:
21.5 days - Average snowfall days in March:
20.1 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:
0.1 days - Average snowfall days in October:
3.2 days - Average snowfall days in November:
8.8 days - Average snowfall days in December:
19.8 days
The month with the highest number of snowfall days is January (22.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Riihimäki, Finland
- Average daylight in January:
6h and 42min - Average daylight in February:
9h and 6min - Average daylight in March:
11h and 48min - Average daylight in April:
14h and 42min - Average daylight in May:
17h and 24min - Average daylight in June:
19h and 0min
- Average daylight in July:
18h and 12min - Average daylight in August:
15h and 42min - Average daylight in September:
12h and 54min - Average daylight in October:
10h and 6min - Average daylight in November:
7h and 24min - Average daylight in December:
5h and 48min
The month with the longest days is June (Average daylight: 19h and 0min).
The month with the shortest days is December (Average daylight: 5h and 48min).
- Average sunshine in January:
1h and 48min - Average sunshine in February:
2h and 12min - Average sunshine in March:
3h and 36min - Average sunshine in April:
6h and 18min - Average sunshine in May:
9h and 30min - Average sunshine in June:
11h and 42min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
9h and 24min - Average sunshine in September:
6h and 54min - Average sunshine in October:
3h and 42min - Average sunshine in November:
2h and 30min - Average sunshine in December:
1h and 30min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 30min).
Average sunshine days
Riihimäki, Finland
- Average sunshine days in January:
8.1 days - Average sunshine days in February:
6.5 days - Average sunshine days in March:
7.5 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
18.5 days - Average sunshine days in June:
20.8 days
- Average sunshine days in July:
19.1 days - Average sunshine days in August:
19 days - Average sunshine days in September:
17.8 days - Average sunshine days in October:
16.1 days - Average sunshine days in November:
7.9 days - Average sunshine days in December:
6.6 days
The month with the most sunshine days is June (20.8 days).
The month with the least sunshine days is February (6.5 days).
Average UV index
Riihimäki, 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
Riihimäki, Finland
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 42).
Average visibility
Riihimäki, Finland
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January and February (5km).
