Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
The transition into October involves a decrease in the average high-temperature, falling from a moderate 15.2°C (59.4°F) in September to a chilly 7.4°C (45.3°F). Riihimäki sustains a near constant temperature throughout October, with nighttime averages of 2.5°C (36.5°F).Humidity
In October, the average relative humidity in Riihimäki, Finland, is 87%.Rainfall
In Riihimäki, in October, during 11.5 rainfall days, 36mm (1.42") of precipitation is typically accumulated. In Riihimäki, during the entire year, the rain falls for 117.8 days and collects up to 373mm (14.69") of precipitation.Snowfall
January through May, October through December are months with snowfall. October is the first month it typically snows in Riihimäki. Throughout October, in the average 3.2 snowfall days, it receives 27mm (1.06") of snow. Throughout the year, there are 102.9 snowfall days, and 1059mm (41.69") of snow is accumulated.Daylight
The average length of the day in October in Riihimäki is 10h and 4min.On the first day of October in Riihimäki, sunrise is at 07:28 and sunset at 18:52 EEST. On the last day of the month, sunrise is at 07:45 and sunset at 16:23 EET.
Note: On Sunday, 27. October 2024, at 04:00, Daylight Saving Time ends, and the time zone changes from EEST to EET. Daylight Saving Time starts again on Sunday, 30. March 2025, at 03:00; consequently, the time zone reverts from EET to EEST.
Sunshine
The average sunshine in October is 3.7h.UV index
In October, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 2 in October transforms into this advice:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Riihimäki in October?
What is the average humidity in October in Riihimäki?
How many days does it rain in October in Riihimäki?
When does it start to snow in Riihimäki?
What is the average length of the day in October in Riihimäki?
When is the sunrise / sunset in October in Riihimäki?
When does Daylight Saving Time (DST) end in October in Riihimäki?
How many hours of sunshine does Riihimäki have in October?
What is the UV index intensity in October in Riihimäki?
Average temperature in October
Riihimäki, Finland
- Average high temperature in October: 7.4°C
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).
- Average low temperature in October: 2.5°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 in October
Riihimäki, Finland
- Average pressure in October: 1014.1mbar
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 in October
Riihimäki, Finland
- Average wind speed in October: 10.3km/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 in October
Riihimäki, Finland
- Average humidity in October: 87%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (67%).
Average rainfall in October
Riihimäki, Finland
- Average rainfall in October: 36mm
The wettest month (with the highest rainfall) is December (44mm).
The driest month (with the least rainfall) is August (18mm).
Average rainfall days in October
Riihimäki, Finland
- Average rainfall days in October: 11.5 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 in October
Riihimäki, Finland
- Average snowfall in October: 27mm
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 in October
Riihimäki, Finland
- Average snowfall days in October: 3.2 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 in October /
Average sunshine in October
Riihimäki, Finland
- Average daylight in October: 10h and 1min
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 October: 3h and 4min
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 in October
Riihimäki, Finland
- Average sunshine days in October: 16.1 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 in October
Riihimäki, Finland
- Average UV index in October: 2
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 in October
Riihimäki, Finland
- Average cloud cover in October: 62
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 in October
Riihimäki, Finland
- Average visibility in October: 8km
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January and February (5km).
Riihimäki, Finland
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