Riihimäki weather in October

In October, Riihimäki sees average daytime highs of 8°C and overnight lows near 2°C, with 54 mm of precipitation across 10.4 wet days and about 9.7 hours of daylight. It is the 7th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 11°C in the first days to 5°C by the end. The sky is clear or mostly clear about 13% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 06 min at the start of October to 8 h 18 min by month's end. Set against the rest of the year, October is Riihimäki's 8th-clearest and 6th-windiest month. For the whole year in context, see Riihimäki's year-round climate.

Daytime high
7th warmest
Overnight low
7th coldest
Precipitation
54 mm
10.4 wet days
Daylight
9 h 42 min
7:15 AM – 4:56 PM
Cloud cover
77%
8th clearest
Wind
12 km/h
6th windiest
Solar energy
1.01 kWh/m²
Travel score
1.2
out of 10

Riihimäki is city center.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 11°C in the first days to 5°C by the end.

A typical October day in Riihimäki reaches about 8°C in the afternoon and slips back to 2°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 3°C and 12°C. Set against its neighbours, October runs about 7°C cooler than September and about 5°C warmer than November.

-10°10°20°151015202531
Avg high (°C)Avg low (°C)
1115
2115
3115
4114
5104
6104
7104
8104
994
1093
1193
1283
1383
1483
1582
1672
1772
1872
1972
2071
2161
2261
2361
2461
2561
2651
2751
2851
2951
3051
3150

How October really feels in Riihimäki

Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 21 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
21
wind chill below the day's low

The story in October is cold — wind chill drags the overnight "feels like" below the raw low.

Riihimäki weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-3° / -8°421010.16.20.0
Feb-3° / -9°348.38.58.50.0
Mar / -6°348.17.611.30.0
Apr / -0°3593.114.21.6
May15° / 4810.10.216.94.6
Jun19° / 10°7312.4018.65.6
Jul21° / 12°7512.4017.96.1
Aug20° / 11°6812015.55.9
Sep15° / 519.9012.64.2
Oct / 5410.41.39.71.2
Nov / -1°4910.65.470.0
Dec-1° / -5°481195.40.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 11% of October, with mostly cloudy or overcast conditions the remaining 76%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22674
32674
42674
52773
62674
72674
82674
92575
102674
112674
122674
132575
142575
152575
162575
172476
182377
192377
202377
212377
222278
232278
242179
252179
262080
272080
282080
291981
301981
311882

Chance of precipitation in October

Any precipitationSnow

Riihimäki gets around 54 mm of rain and snow over 10.4 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 33% and peaks near 35% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1341
2341
3341
4351
5351
6352
7342
8342
9343
10333
11333
12323
13324
14314
15314
16314
17314
18315
19325
20325
21326
22336
23336
24337
25347
26347
27348
28359
29359
303510
313510

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1991
2991
3991
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in October

Winds average 12 km/h in October.

Across October, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 06 min at the start of October to 8 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 168 minutes over October. Sunrise moves from 6:37 AM to 7:56 AM, and sunset from 5:43 PM to 4:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.16:375:43
211.06:395:40
310.96:425:37
410.86:445:34
510.76:475:31
610.66:495:27
710.56:525:24
810.46:555:21
910.36:575:18
1010.37:005:15
1110.27:025:12
1210.17:055:09
1310.07:085:06
149.97:105:02
159.87:134:59
169.77:154:56
179.67:184:53
189.57:214:50
199.47:234:47
209.37:264:44
219.27:294:41
229.17:314:39
239.07:344:36
248.97:374:33
258.87:404:30
268.77:424:27
278.77:454:24
288.67:484:21
298.57:504:19
308.47:534:16
318.37:564:13

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 1.01 kWh/m².

For context, solar energy here swings from a low near 0.13 kWh/m² to a high of 5.37 kWh/m² in June across the year — October's 1.01 kWh/m² falls in the middle.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.6Dim
21.5Dim
31.5Dim
41.4Dim
51.4Dim
61.4Dim
71.3Dim
81.3Dim
91.2Dim
101.2Dim
111.2Dim
121.1Dim
131.1Dim
141.1Dim
151.0Dim
161.0Dim
171.0Dim
180.9Dim
190.9Dim
200.9Dim
210.8Dim
220.8Dim
230.8Dim
240.8Dim
250.7Dim
260.7Dim
270.7Dim
280.7Dim
290.6Dim
300.6Dim
310.6Dim
Planning a trip in October

Is October a good time to visit Riihimäki?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

1.2
Sightseeing
7th-best month of the year
0.0
Beach & pool
6th-best month of the year

October is a weaker month for outdoor sightseeing in Riihimäki.

What to pack for Riihimäki in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, Riihimäki sees daytime highs around 8°C and nights near 2°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Riihimäki in October

The nearest coast averages about 10°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 68 km away) is warmest in August at about 17°C and coldest in March near 1°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan2Bracing
Feb1Bracing
Mar1Bracing
Apr2Bracing
May6Bracing
Jun11Bracing
Jul16Cool
Aug17Cool
Sep14Bracing
Oct10Bracing
Nov7Bracing
Dec4Bracing

UV index in Riihimäki in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Riihimäki peaks around June 18 at about 5 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 4 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateModerateLowJun 18UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5High
Jul5Moderate
Aug4Moderate
Sep2Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Riihimäki?

Riihimäki sits at 60.7°N, 24.8°E, 106 m above sea level, in Finland. The nearest listed city is Hyvinge, 13 km away.

Topography around Riihimäki

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Riihimäki.

Within 3 km, the terrain around Riihimäki has only modest variations in elevation — a maximum elevation change of 68 m around an average of 102 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 98 m; within 80 km, only modest variations in elevation — a maximum elevation change of 226 m.

The land around Riihimäki is covered by trees (63%) and artificial surfaces (23%) within 3 km, trees (65%) and cropland (24%) within 16 km, and trees (68%) within 80 km.

3 km
68 m
16 km
98 m
80 km
226 m
treesgrasslandcroplandartificial surfaceswaterwetland
October weather nearby: Hyvinge 13 km · Janakkala 20 km · Nurmijärvi 30 km · Mäntsälä 32 km · Hämeenlinna 33 km · Järvenpää 34 km · Klaukkala 40 km · Tuusula 40 km

Finland travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 85% of US
price level, 2025
GDP per capita
$56,149
2025
Happiness
7.8 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1
per 100k, 2023
Road deaths
3.9
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 603
Religion
Lutheran 67%none 31%other 2%Greek Orthodox 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Riihimäki (60.7377°, 24.7773°, elevation 106 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).